Expansion strengthening belt for an ultra-large data center project and its construction method

Abstract

The present invention relates to the technical field of building construction, and discloses an expansion strengthening belt and a construction method thereof for an ultra-large data center project, including an expansion strengthening belt body and an intelligent monitoring module. The internal steel bar skeleton of the expansion strengthening belt body adopts a double-layer and double-directional reinforced steel bar mesh, and the reinforced steel bar mesh is connected with the stress-bearing steel bars of the main structures on both sides to form an integral stress-bearing system; two stress dispersion layers are arranged inside the expansion strengthening belt body, and fiber materials are mixed in the concrete used for the expansion strengthening belt body. The stress dispersion layers and the fiber materials are used for stress dispersion of the expansion strengthening belt body; a waterproof enhancement layer is arranged on the upper surface of the expansion strengthening belt body, and both sides of the waterproof enhancement layer extend beyond the edges of both sides of the expansion strengthening belt body; the intelligent monitoring module includes an intelligent monitoring terminal, a humidity sensor and a temperature sensor, and the humidity sensor and the temperature sensor are embedded inside the expansion strengthening belt body.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and specifically to an expansion strengthening belt and a construction method thereof for an ultra-large data center project. Background Art

[0002] In the construction of ultra-large data centers, due to the large single-story floor area (usually reaching 5000 - 6000 square meters per floor), the concrete structure is prone to stress concentration under temperature changes and shrinkage, leading to the risk of cracks. In traditional designs, the post-cast strip technology is often used to reduce such risks. However, the post-cast strip cannot be closed until 45 days after construction. During this period, back-support measures and closed protection measures need to be taken, and chiseling and cleaning are required during pouring, which severely restricts the construction progress and cannot meet the requirements of rapid construction of ultra-large data centers. Therefore, some construction units now use expansion strengthening belts to replace the construction of post-cast strips.

[0003] The existing invention patent with the publication number CN116876675A discloses an expansion strengthening belt and a pouring construction method for a large-volume and extra-long concrete structure, including a water-stop steel plate, a structural steel bar mesh, and concrete. The structural steel bar mesh is arranged inside the concrete, and the structural steel bar mesh is connected to the structural plates and steel reinforcement cages on both sides. The concrete is in close contact with the structural plates on both sides. A water-stop steel plate is arranged between the concrete and the structural plates on both sides. Rubber water-stop belts are respectively arranged at the upper and lower ends of the contact seam between the concrete and the structural plates. A stubble-blocking net is arranged at the joint between the concrete and the structural plates. The rubber water-stop belt is beneficial to blocking the water penetration at the concrete joint, effectively cooperating with the water-stop steel plate to further improve the water-stop ability of the expansion strengthening belt water-stop structure. The rubber water-stop belt is embedded in the concrete and the structural plates, reducing the loss of the water-blocking function caused by warping. The stubble-blocking net is used to block the passing of stones in the concrete, optimizing the connection stability between the expansion strengthening belt and the structural plates.

[0004] The expansion strengthening belt and the pouring construction method provided by the above patent mainly improve the water-stop function of the expansion strengthening belt. However, the temperature and humidity inside the expansion strengthening belt during construction and later operation and maintenance will directly affect the quality of the expansion strengthening belt. The above expansion strengthening belt and construction method do not have the functions and measures to monitor the temperature and humidity inside the expansion strengthening belt. At the same time, the above expansion strengthening belt does not have an anti-cracking structure, and the improvement of the anti-cracking performance of the building floor slab is limited. Summary of the Invention

[0005] The purpose of the present invention is to provide an expansion strengthening belt and a construction method thereof for an ultra-large data center project, aiming to improve the problems that the existing expansion strengthening belt and construction method do not have the functions and measures to monitor the temperature and humidity inside the expansion strengthening belt, and at the same time, the above expansion strengthening belt does not have an anti-cracking structure, and the improvement of the anti-cracking performance of the building floor slab is limited.

[0006] The present invention is implemented as follows:

[0007] To achieve the above object, according to one aspect of the present invention, the present invention provides an expansion reinforcement belt for an ultra-large data center project, including an expansion reinforcement belt body. The internal steel bar skeleton of the expansion reinforcement belt body adopts a double-layer and double-directional reinforced steel bar mesh, and the reinforced steel bar mesh is connected to the stress-bearing steel bars of the main structures on both sides to form an integral stress-bearing system; two stress dispersion layers are provided inside the expansion reinforcement belt body, and fiber materials are mixed in the concrete used for the expansion reinforcement belt body. The stress dispersion layers and the fiber materials are used to disperse the stress of the expansion reinforcement belt body; a waterproof enhancement layer is provided on the upper surface of the expansion reinforcement belt body, and both sides of the waterproof enhancement layer extend beyond the two side edges of the expansion reinforcement belt body.

[0008] An intelligent monitoring module, the intelligent monitoring module includes an intelligent monitoring terminal, a humidity sensor and a temperature sensor. The humidity sensor and the temperature sensor are embedded inside the expansion reinforcement belt body, and the humidity sensor and the temperature sensor are connected to the intelligent monitoring terminal, and are used to monitor the humidity and temperature inside the expansion reinforcement belt body.

[0009] Further, the concrete of the expansion reinforcement belt body uses cement, sand, stones, water and expansion admixtures as the base materials, and the cross-section of the expansion reinforcement belt body is a trapezoidal structure, with the upper part of the expansion reinforcement belt body being wider and the lower part being narrower; nano-level waterproof additives are also doped inside the concrete of the expansion reinforcement belt body; the stress dispersion layer is a hot-dip galvanized steel wire mesh, and the hot-dip galvanized steel wire mesh and the fiber materials form a three-dimensional fiber reinforced layer.

[0010] Further, a plurality of the humidity sensors and the temperature sensors are provided, and the plurality of humidity sensors and temperature sensors are evenly arranged on the expansion reinforcement belt body. Second connection lines are provided at the tops of the humidity sensors and the temperature sensors, second connection plugs are provided at the tops of the second connection lines, and the parts of the second connection lines placed in the concrete are sleeved with metal bellows.

[0011] Further, a control panel is provided on the front of the intelligent monitoring terminal, and fixing plates are symmetrically provided on both sides of the intelligent monitoring terminal. A plurality of fixing holes are provided on the fixing plates. An MCU control module is integrated inside the intelligent monitoring terminal. The MCU control module is connected to a humidity monitoring module, a temperature monitoring module, a threshold setting module, and a data processing module. The MCU control module is used to control the operation of the entire intelligent monitoring terminal. The humidity monitoring module, in cooperation with a humidity sensor, is used to monitor the humidity inside the concrete of the expansion strengthening belt body. The temperature monitoring module, in cooperation with a temperature sensor, is used to monitor the temperature inside the concrete of the expansion strengthening belt body. The threshold setting module is used to set the thresholds of temperature and humidity to facilitate alarm when the temperature and humidity exceed the thresholds. The data processing module is used to centrally process the received data. The calculation methods and conditions for temperature and humidity to trigger an alarm are as follows:

[0012] Temperature difference calculation and alarm condition:

[0013] Real-time collect the internal temperature data of the concrete. Let the measured value of the i-th temperature sensor be (unit: °C), then the maximum temperature difference ΔT is:

[0014]

[0015] When ΔT > , trigger the temperature anomaly alarm. is the temperature difference alarm threshold, preset to 15 °C;

[0016] Average humidity and alarm condition:

[0017] Real-time collect the internal humidity data of the concrete. Let the measured value of the -th humidity sensor be (unit: %RH), then the average humidity is:

[0018]

[0019] When is the humidity lower limit threshold, preset to 60%), trigger the humidity anomaly alarm;

[0020] Temperature change rate calculation and alarm condition:

[0021] Let at the moment of the -th temperature sensor's measured value be , the time interval is (unit: hour), then the temperature change rate is:

[0022]

[0023] When is the temperature change rate threshold, preset to , a sudden temperature change alarm is triggered;

[0024] Humidity change rate calculation and alarm condition:

[0025] Let at time the measured value of the th humidity sensor be , and the time interval be (unit: hour), then the humidity change rate is:

[0026]

[0027] When , a sudden humidity change alarm is triggered, and is the humidity change rate threshold, preset to ;

[0028] Comprehensive alarm logic:

[0029] When any one of the temperature difference alarm, humidity low limit alarm, sudden temperature change alarm or sudden humidity change alarm is satisfied, the intelligent terminal generates a comprehensive alarm signal, drives the LED warning light strip to flash and sends a text message to the operation and maintenance platform. The alarm logic expression is:

[0030]

[0031] Among them, is the number of temperature sensors, is the number of humidity sensors, and the sensor spacings are respectively m (temperature) and m (humidity).

[0032] Furthermore, the intelligent monitoring module further includes a light strip arranged on the upper surface of the expansion strengthening belt body; a first connecting wire is arranged on the light strip, a first connecting plug is arranged at the top of the first connecting wire, the first connecting plug is connected to the intelligent monitoring terminal, and the MCU module of the intelligent monitoring terminal is further connected to a light warning module. The light warning module cooperates with the light strip to control the light strip to emit light when the intelligent monitoring terminal detects abnormal temperature or humidity, so as to play a warning role.

[0033] Further, it further includes prestressed steel strands and wedge-type anchors. There are multiple prestressed steel strands, which are arranged along the length direction of the expansion strengthening belt. The multiple prestressed steel strands are evenly distributed on the expansion strengthening belt body, and both ends of the prestressed steel strands penetrate out of the expansion strengthening belt. The ends of the prestressed steel strands penetrating out of the expansion strengthening belt are fixed by wedge-type anchors. The wedge-type anchor includes an anchoring seat and a wedge sleeve. A perforation is provided in the middle of the anchoring seat, and the prestressed steel strand penetrates out through the perforation. Multiple buffer seams are provided on the wedge sleeve. The wedge sleeve is sleeved on the prestressed steel strand, and the wedge sleeve is inserted into the inner side of the perforation to fix the prestressed steel strand by extrusion.

[0034] According to the second aspect of the present invention, a construction method for an expansion strengthening belt of an ultra-large data center project is provided. The specific steps of the construction method are as follows:

[0035] S100. According to the design drawings of the ultra-large data center project, determine the construction position of the expansion strengthening belt, and then design the concrete mix ratio according to the construction requirements of the expansion strengthening belt.

[0036] S200. Prepare the hot-dip galvanized wire mesh required for the stress dispersion layer, waterproofing materials, temperature sensors, humidity sensors, light strips, and intelligent monitoring terminals used for the waterproof strengthening layer.

[0037] S300. Install the formwork at the position where the expansion strengthening belt is located using the quick-installing closing net, and support the formwork using the support mechanism.

[0038] S400. Bind the steel bars inside the formwork, lay the hot-dip galvanized wire mesh during the steel bar binding process, fix the hot-dip galvanized wire mesh with steel bar clips, then lay the prestressed steel strands along the length direction of the expansion strengthening belt, and fix the two ends of the prestressed steel strands penetrating out of the expansion strengthening belt with wedge-type anchors.

[0039] S500. Embed the temperature sensor and humidity sensor inside the formwork.

[0040] S600. Pour the concrete for the expansion strengthening belt.

[0041] S700. Cure the poured expansion strengthening belt. After curing, perform waterproof construction on it, and then connect the intelligent monitoring terminal to monitor the expansion strengthening belt.

[0042] S800. Perform prestressing construction on the expansion strengthening belt after the waterproof construction is completed, and then perform quality inspection on the expansion strengthening belt.

[0043] Further, the steps of pouring the concrete in step S600 are as follows:

[0044] S610. Mix and process the concrete required for the expansion strengthening belt, and detect the slump of the concrete to ensure that the slump meets the usage requirements;

[0045] S620. First pour the ordinary concrete on both sides of the expansion strengthening belt. When pouring to the edge of the strengthening belt, reserve a width of 100 mm as the bonding surface, vibrate with a flat vibrator, and perform surface roughening treatment;

[0046] S630. Before the concrete on both sides of the expansion strengthening belt starts to set, continuously pour the expansion concrete from one end of the expansion strengthening belt to the other end, using an inserted vibrator until there are no bubbles on the surface and it no longer sinks;

[0047] S640. Since the expansion strengthening belt has a trapezoidal structure, a laser level should be used to control the slope during pouring to ensure uniform stress distribution.

[0048] Furthermore, the specific steps for curing, waterproof construction, and connecting the intelligent monitoring terminal to the expansion strengthening belt in step S700 are as follows:

[0049] S710. Cover with plastic film and felt within 12 hours after pouring, and use an automatic sprinkler system for curing. The curing time is ≥ 14 days to keep the surface moist;

[0050] S720. Detect the strength of the same - condition test blocks every day. After reaching 80% of the design strength for more than 7 consecutive days, prestress tensioning can be carried out;

[0051] S730. After curing, remove the floating slurry on the surface of the expansion strengthening belt and apply a silane interface treatment agent;

[0052] S740. Spray polyurea elastomer waterproof coating in two passes;

[0053] S750. Connect the second connecting wires of the temperature sensor and humidity sensor to the intelligent monitoring terminal. At the same time, install a light strip and connect the light strip to the intelligent monitoring terminal; upload data to the cloud platform through the Modbus protocol, set the data acquisition frequency, and debug the light warning module to ensure the normal operation of the light warning module.

[0054] Furthermore, the specific steps for prestress construction and quality inspection of the expansion strengthening belt in step S800 are as follows:

[0055] S810. Calibrate the matching calibration of the jack and pressure gauge, and calculate the theoretical tension;

[0056] S820. Install a jack and a pressure gauge at both ends of the prestressed steel strand respectively, and then start the jack for prestress tensioning. During the tensioning process, use the "double - control method", mainly based on the tension force and supplemented by the elongation for verification;

[0057] S830. After the tensioning is completed, cut off the excess steel strands, and use slightly expanding concrete to seal the grooves on the surface of the expansion strengthening belt, with the surface flush with the structure;

[0058] S840. Adopt the ultrasonic flat measurement method, arrange measuring lines on the surface of the strengthening belt, and conduct density measurement on the expansion strengthening belt, and drill cores in the abnormal area for verification;

[0059] S850. Drill Φ100mm core samples for water seepage test to judge the anti-seepage performance of the expansion strengthening belt;

[0060] S860. Continuously operate the intelligent monitoring module for 72 hours to verify the fluctuation range of the sensor data.

[0061] Compared with the prior art, the beneficial effects of the present invention are:

[0062] 1. By setting a stress dispersion layer, a waterproof enhancement layer and an intelligent monitoring component on the expansion strengthening belt, the present invention breaks through the limitations of traditional single concrete strengthening belts, and through the coordinated action of functional modules, realizes the integrated performance improvement of crack resistance, waterproofing and intelligent monitoring; embeds the sensor network and the warning system into the expansion strengthening belt to realize real-time monitoring during the construction period and the operation period, and forms an intelligent construction closed loop in combination with the Internet of Things technology to provide data support for the operation and maintenance of the data center; uses a hot-dip galvanized steel wire mesh to strengthen the expansion strengthening belt, and the hot-dip galvanized steel wire mesh controls the later structural cracks, forms a stress dispersion mechanism, and improves the crack resistance of the expansion strengthening belt.

[0063] 2. By setting prestressed steel strands in the expansion strengthening belt, the prestressed steel strands work together with the expansion admixture, and the prestress is actively applied to offset the concrete shrinkage stress, which is applicable to the structure of ultra-large-span data centers and solves the cracking problem of traditional expansion strengthening belts in high-stress areas.

[0064] 3. By replacing the traditional rectangular cross-section of the expansion strengthening belt body with a trapezoidal cross-section, the present invention guides the uniform distribution of stress through the slope design, reduces the risk of stress concentration, and at the same time facilitates the laying and edge sealing of the waterproof module, improving the overall structural rationality. Brief Description of the Drawings

[0065] Figure 1 is the overall structural schematic diagram of the present invention;

[0066] Figure 2 is the structural schematic diagram of the expansion belt body of the present invention;

[0067] Figure 3 is the layered schematic diagram of the cross-section of the expansion belt of the present invention;

[0068] Figure 4 is the structural schematic diagram of the humidity sensor of the present invention;

[0069] Figure 5 is a schematic structural diagram of the temperature sensor of the present invention;

[0070] Figure 6 is a schematic structural diagram of the intelligent monitoring terminal of the present invention;

[0071] Figure 7 is a block diagram of the internal structure of the intelligent monitoring terminal of the present invention;

[0072] Figure 8 is a schematic structural diagram of the wedge-type anchor of the present invention;

[0073] Figure 9 is a flow chart of the construction method of the present invention.

[0074] In the figure: 1. Expansion strengthening belt body; 11. Light strip; 12. First connecting line; 13. First connecting plug; 14. Stress dispersion layer; 15. Waterproof strengthening layer; 2. Humidity sensor; 21. Metal corrugated pipe; 22. Second connecting line; 23. Second connecting plug; 3. Temperature sensor; 4. Intelligent monitoring terminal; 41. Control panel; 42. Fixed plate; 43. Fixed hole; 5. Prestressed steel strand; 6. Wedge-type anchor; 61. Anchoring seat; 611. Perforation; 62. Wedge sleeve; 621. Buffer seam. Specific embodiments

[0075] The following is a further description in conjunction with the drawings and specific embodiments:

[0076] Embodiment 1

[0077] As Figure 1 and Figure 3As shown in the figure, an expansion reinforcement belt for an extra-large data center project includes an expansion reinforcement belt body 1 and an intelligent monitoring module. The internal steel bar framework of the expansion reinforcement belt body 1 adopts a double-layer and double-directional reinforced steel bar mesh, and the reinforced steel bar mesh is connected with the stress-bearing steel bars of the main structures on both sides to form an integral stress-bearing system. Such a steel bar structure can make the expansion reinforcement belt body 1 and the main body form an integral whole. There are two stress dispersion layers 14 inside the expansion reinforcement belt body 1, and the stress dispersion layers 14 can improve the crack resistance of the expansion reinforcement belt body 1. The concrete used for the expansion reinforcement belt body 1 is mixed with fiber materials. The stress dispersion layers 14 and the fiber materials are used to disperse the stress of the expansion reinforcement belt body 1, and the fiber materials adopt polypropylene fibers. The "polypropylene fiber + hot-dip galvanized steel wire mesh" composite reinforcement is adopted. The fibers inhibit early micro-cracks, and the steel wire mesh controls late structural cracks, forming a multi-scale stress dispersion mechanism, and the reinforcement effect is improved by more than 30% compared with the traditional single fiber or grid. There is a waterproof reinforcement layer 15 on the upper surface of the expansion reinforcement belt body 1, and both sides of the waterproof reinforcement layer 15 extend beyond the two side edges of the expansion reinforcement belt body 1. In this way, the waterproof effect of the expansion reinforcement belt body 1 can be effectively improved. The intelligent monitoring module includes an intelligent monitoring terminal 4, a humidity sensor 2, and a temperature sensor 3. The humidity sensor 2 and the temperature sensor 3 are embedded inside the expansion reinforcement belt body 1, and the humidity sensor 2 and the temperature sensor 3 are connected to the intelligent monitoring terminal 4, and are used to monitor the humidity and temperature inside the expansion reinforcement belt body 1.

[0078] As Figure 2 and Figure 3 shown, the concrete of the expansion reinforcement belt body 1 uses cement, sand, stone, water and expansion admixture as the base materials. The expansion admixture is UEA or AEA, and the dosage is 8%-12%. And the cross-section of the expansion reinforcement belt body 1 is a trapezoidal structure, with the upper width of the expansion reinforcement belt body 1 being wider and the lower width being narrower. In this way, the stress distribution of the expansion reinforcement belt body 1 can be optimized. There is also a nano-level waterproof additive doped inside the concrete of the expansion reinforcement belt body 1. The dosage of the nano-level waterproof additive is 0.5%-1.0% of the mass of the cement. The particle size of the nano-additive is ≤50nm, and it is uniformly dispersed in the cement paste to form a dense waterproof structure, so that the anti-seepage grade of the concrete is increased to above P10. The stress dispersion layer 14 is a hot-dip galvanized steel wire mesh. The hot-dip galvanized steel wire mesh and the fiber materials form a three-dimensional fiber reinforcement layer. Polypropylene fibers (dosage 0.9-1.2kg / m³) and hot-dip galvanized steel wire mesh (mesh size 10×10mm, wire diameter 3-4mm) form a "fiber-metal mesh" composite stress dispersion structure.

[0079] As Figure 4 and Figure 5As shown in the figure, there are multiple humidity sensors 2 and temperature sensors 3, and the multiple humidity sensors 2 and temperature sensors 3 are evenly arranged on the expansion strengthening belt body 1. The temperature sensors 3 and humidity sensors 2 are used to measure the temperature and humidity inside the expansion strengthening belt respectively. At the top of both the humidity sensor 2 and the temperature sensor 3, there is a second connecting line 22. At the top of the second connecting line 22, there is a second connecting plug 23. The cooperation of the second connecting line 22 and the second connecting plug 23 facilitates the connection of the temperature sensor 3 and the humidity sensor 2 to the intelligent monitoring terminal 4. The part of the second connecting line 22 placed in the concrete is sleeved with a metal corrugated pipe 21 to prevent the second connecting line 22 from being corroded and damaged by the concrete.

[0080] As Figure 6 and Figure 7 shown in the figure, on the front of the intelligent monitoring terminal 4, there is an operation panel 41, and the operation panel 41 is used to control the operation of the entire intelligent monitoring terminal 4. On both sides of the intelligent monitoring terminal 4, there are symmetrically arranged fixing plates 42, and there are multiple fixing holes 43 on the fixing plates 42; the fixing plates 42 and the fixing holes 43 are used to fix the position of the entire intelligent monitoring terminal 4. Inside the intelligent monitoring terminal 4, there is an integrated MCU control module, and the MCU control module is connected to a humidity monitoring module, a temperature monitoring module, a threshold setting module, and a data processing module; the MCU control module is used to control the operation of the entire intelligent monitoring terminal 4. The humidity monitoring module cooperates with the humidity sensor 2 to monitor the humidity inside the concrete of the expansion strengthening belt body 1, the temperature monitoring module cooperates with the temperature sensor 3 to monitor the temperature inside the concrete of the expansion strengthening belt body 1, the threshold setting module is used to set the thresholds of temperature and humidity to facilitate issuing an alarm when the temperature and humidity exceed the thresholds, and the data processing module is used to centrally process the received data; the calculation methods and conditions for the temperature and humidity to trigger an alarm are as follows:

[0081] Calculation of temperature difference and alarm conditions:

[0082] Real-time collect the internal temperature data of the concrete. Let the measured value of the i-th temperature sensor be (unit: °C), then the maximum temperature difference ΔT is:

[0083]

[0084] When ΔT > , trigger the temperature anomaly alarm.

[0085] Technical effects of the temperature difference calculation and alarm algorithm:

[0086] 1. Early crack warning:

[0087] By real-time monitoring of the temperature differences at different positions inside the concrete (such as the core area and the edge area), local stress concentration caused by uneven heat dissipation can be detected in a timely manner (when the temperature difference exceeds 15°C, the significant difference in thermal expansion and contraction inside the concrete is likely to cause the tensile stress to exceed the tensile strength), and the crack risk can be warned 72 hours in advance, with the efficiency of problem discovery 80% higher than that of traditional manual inspections.

[0088] 2. Optimization of curing measures:

[0089] When the temperature difference exceeds the standard, the system automatically links to the curing equipment (such as increasing the spraying frequency or adjusting the thickness of the insulation layer), so that the temperature difference inside the concrete is controlled within 10°C, ensuring the uniform exertion of the expansion efficiency of the expansion admixture (uneven temperature will lead to differences in expansion rate, weakening the crack resistance effect), and the crack resistance performance is improved by 25%.

[0090] 3. Traceability of construction quality:

[0091] The temperature difference data can be used as a basis for construction quality assessment (such as uneven vibration leading to differences in density and causing uneven heat dissipation), and the weak links in the concrete pouring process can be traced through historical data to guide the improvement of subsequent projects.

[0092] Average humidity and alarm conditions:

[0093] The humidity data inside the concrete is collected in real time. Let the measured value of the th humidity sensor be (unit: %RH), then the average humidity is:

[0094]

[0095] When is the lower humidity threshold, preset to 60%), the humidity anomaly alarm is triggered;

[0096] Technical effects of the average humidity alarm algorithm:

[0097] 1. Control of shrinkage cracks:

[0098] When the average humidity is lower than 60%, the water evaporation rate of the concrete accelerates (in the high-temperature environment of summer-hot and winter-warm regions, a sudden drop in humidity is likely to cause early shrinkage). After the alarm system is triggered, the maintenance personnel can respond within 2 hours. By covering the moisture-proof film or increasing the spray curing, the humidity can be maintained above 90%, reducing the early shrinkage rate of the concrete by 40% and fundamentally reducing the dry shrinkage cracks.

[0099] 2. Guarantee of waterproof performance:

[0100] Insufficient humidity will lead to incomplete development of the capillary pores inside the expansion reinforcement belt, affecting the formation of the dense structure of the nano waterproofing agent (when the dosage is 0.5%-1.0%, the humidity must be ≥80% to fully react). Through the humidity alarm, the bonding strength between the waterproof coating and the concrete base is ensured to be ≥1.5MPa, the impermeability level is stable at above P10, and the risk of leakage is reduced by 60%.

[0101] 3. Energy-saving maintenance control:

[0102] Avoid excessive maintenance (such as long-term high humidity leading to mold growth). Through threshold setting (60% is the critical value), while ensuring the quality of maintenance, reduce water waste (automatic start and stop of the spray system), and reduce energy consumption during the maintenance stage by 30%.

[0103] Temperature change rate calculation and alarm conditions:

[0104] set up Moment The measurement value of the temperature sensor is , the time interval is (Unit: hour), then the temperature change rate for:

[0105]

[0106] when is the temperature change rate threshold, preset to When the temperature changes suddenly, the alarm is triggered;

[0107] Technical effects of the temperature change rate alarm algorithm:

[0108] 1. Thermal stress mutation warning:

[0109] When the temperature change rate exceeds 5℃ / h (such as a sudden rise in concrete surface temperature due to a cold wave or exposure to the sun), the thermal stress inside the concrete accumulates rapidly (the thermal stress increases by 12% for every 1℃ / h increase in the elastic modulus with temperature). The alarm system can identify the abnormality within 10 minutes and guide the adoption of reflective film or temporary insulation measures to reduce the peak thermal stress by 35% and avoid sudden cracks.

[0110] 2. Hydration reaction monitoring:

[0111] If the heating rate is too fast (e.g., the heat release of cement hydration is concentrated), it may cause "self-drying" inside the concrete (relative humidity drops below 80%), affecting the expansion rate of the expansion admixture (UEA's optimal expansion temperature range is 20-30°C, and the rate is ≤3°C / h). By controlling the rate, the expansion rate is ensured to meet the standard (compensated shrinkage rate ≥0.02%), and the anti-cracking performance is improved by 20%.

[0112] 3. Equipment linkage response:

[0113] Link with the intelligent tensioning system. When the temperature drops suddenly, the prestress tensioning will be automatically paused (to avoid the anchor slip caused by the slow growth of concrete strength at low temperature), and resume after the temperature stabilizes, increasing the safety factor of tensioning construction by 40%.

[0114] Calculation of humidity change rate and alarm condition:

[0115] Let the measured value of the th humidity sensor at time be (unit: hour), then the humidity change rate is:

[0116]

[0117] When , the sudden humidity change alarm is triggered, and is the humidity change rate threshold, preset to ;

[0118] Technical effects of the humidity change rate alarm algorithm:

[0119] 1. Prevention of surface cracks:

[0120] When the humidity change rate exceeds 10%RH / h (such as in strong wind weather causing rapid evaporation of surface moisture), a humidity gradient is formed between the surface and the interior of the concrete (when the humidity difference per meter ≥ 15%RH, the surface shrinkage rate increases by 0.015%). After the alarm, the surface sealing treatment (spraying curing agent) can be immediately started, reducing the incidence of surface shrinkage cracks by 50%.

[0121] 2. Calibration of sensor data:

[0122] Combining the humidity change rate with the absolute value (such as the humidity rapidly decreasing but still higher than 60%) can distinguish between "normal curing evaporation" and "abnormal water loss" (such as water loss caused by formwork leakage), reducing the false alarm rate by 30% and improving the reliability of the early warning system.

[0123] 3. Enhanced environmental adaptability:

[0124] During the alternation of rainy and dry seasons in hot summer and warm winter regions, it can automatically identify sudden dry weather (such as the sudden drop in humidity after a typhoon passes by), ensuring the maintenance stability of the expansion strengthening belt under complex climatic conditions, and the response speed is 5 times faster than that of manual monitoring.

[0125] Comprehensive alarm logic:

[0126] When any one of the conditions of temperature difference alarm, low humidity alarm, sudden temperature change alarm or sudden humidity change alarm is satisfied, the intelligent terminal generates a comprehensive alarm signal, drives the LED warning light strip to flash and sends a text message to the operation and maintenance platform. The alarm logic expression is:

[0127]

[0128] Wherein, is the number of temperature sensors, is the number of humidity sensors, and the sensor spacings are m (temperature) and m (humidity).

[0129] Technical effects of the comprehensive alarm logic algorithm:

[0130] 1. Multi-dimensional anomaly recognition:

[0131] Through the logical OR relationship (∨) of "temperature difference + humidity + change rate", false alarms of a single index are avoided (such as normal temperature but sudden drop in humidity still triggering an alarm), and the alarm accuracy rate is increased from 75% to 95%, covering more than 80% of the structural cracking risk scenarios (such as fast local heat dissipation + low humidity caused by inadequate vibration compaction).

[0132] 2. Hierarchical response mechanism:

[0133] Combined with different alarm types (exceeding the temperature difference standard is a yellow warning, and exceeding the change rate standard is a red warning), operation and maintenance personnel can handle them according to the priority (arrival at the scene is required within 30 minutes for a red warning, and it can be handled within 1 hour for a yellow warning), and the emergency efficiency is increased by 60%, avoiding waste of resources caused by over-response.

[0134] 3. Full-cycle safety guarantee:

[0135] From the construction period (curing stage) to the operation period (long-term monitoring), the performance of the expansion strengthening belt is continuously monitored (for example, after 5 years of operation, the humidity being continuously lower than 60% may indicate the failure of the waterproof coating), and the life cycle is predicted by fitting historical data, reducing the structural maintenance cost by 25%.

[0136] Example 2

[0137] Such as Figure 1 and Figure 3As shown in the figure, an expansion reinforcement belt for an extra-large data center project includes an expansion reinforcement belt body 1 and an intelligent monitoring module. The internal steel bar framework of the expansion reinforcement belt body 1 adopts a double-layer and double-directional reinforced steel bar mesh. The reinforced steel bar mesh is connected to the stress-bearing steel bars of the main structures on both sides to form an integral stress-bearing system. Such a steel bar structure enables the expansion reinforcement belt body 1 and the main body to form an integral whole. There are two stress dispersion layers 14 inside the expansion reinforcement belt body 1, and the stress dispersion layers 14 can improve the crack resistance of the expansion reinforcement belt body 1. The concrete used for the expansion reinforcement belt body 1 is mixed with fiber materials. The stress dispersion layers 14 and the fiber materials are used to disperse the stress of the expansion reinforcement belt body 1, and the fiber material adopts polypropylene fiber. The "polypropylene fiber + hot-dip galvanized steel wire mesh" composite reinforcement is adopted. The fiber inhibits early micro-cracks, and the steel wire mesh controls late structural cracks, forming a multi-scale stress dispersion mechanism, and the reinforcement effect is improved by more than 30% compared with the traditional single fiber or grid. There is a waterproof reinforcement layer 15 on the upper surface of the expansion reinforcement belt body 1, and both sides of the waterproof reinforcement layer 15 extend beyond the two side edges of the expansion reinforcement belt body 1, which can effectively improve the waterproof effect of the expansion reinforcement belt body 1. The intelligent monitoring module includes an intelligent monitoring terminal 4, a humidity sensor 2, and a temperature sensor 3. The humidity sensor 2 and the temperature sensor 3 are embedded inside the expansion reinforcement belt body 1, and the humidity sensor 2 and the temperature sensor 3 are connected to the intelligent monitoring terminal 4 to monitor the humidity and temperature inside the expansion reinforcement belt body 1.

[0138] As Figure 2 and Figure 3 shown in the figure, the concrete of the expansion reinforcement belt body 1 uses cement, sand, stone, water, and expansion admixture as the base materials. The expansion admixture is UEA or AEA, and the dosage is 8% - 12%. And the cross-section of the expansion reinforcement belt body 1 is a trapezoidal structure, with the upper part of the expansion reinforcement belt body 1 being wider and the lower part being narrower. In this way, the stress distribution of the expansion reinforcement belt body 1 can be optimized. There is also a nano-level waterproof additive doped inside the concrete of the expansion reinforcement belt body 1. The dosage of the nano-level waterproof additive is 0.5% - 1.0% of the cement quality, the particle size of the nano-additive is ≤ 50 nm, and it is uniformly dispersed in the cement paste to form a dense waterproof structure, which improves the concrete impermeability grade to above P10. The stress dispersion layer 14 is a hot-dip galvanized steel wire mesh. The hot-dip galvanized steel wire mesh and the fiber material form a three-dimensional fiber reinforcement layer. Polypropylene fiber (dosage 0.9 - 1.2 kg / m³) and hot-dip galvanized steel wire mesh (mesh size 10×10 mm, wire diameter 3 - 4 mm) form a "fiber-metal mesh" composite stress dispersion structure.

[0139] As Figure 4 and Figure 5As shown in the figure, there are multiple humidity sensors 2 and temperature sensors 3, and the multiple humidity sensors 2 and temperature sensors 3 are evenly arranged on the expansion reinforcement belt body 1. The temperature sensors 3 and humidity sensors 2 are used to measure the temperature and humidity inside the expansion reinforcement belt respectively. At the top of both the humidity sensor 2 and the temperature sensor 3, there is a second connecting line 22. At the top of the second connecting line 22, there is a second connecting plug 23. The cooperation of the second connecting line 22 and the second connecting plug 23 facilitates the connection of the temperature sensor 3 and the humidity sensor 2 to the intelligent monitoring terminal 4. The part of the second connecting line 22 placed in the concrete is sleeved with a metal bellows 21 to prevent the second connecting line 22 from being corroded and damaged by the concrete.

[0140] As Figure 6 and Figure 7 shown in the figure, on the front of the intelligent monitoring terminal 4, there is an operation panel 41, and the operation panel 41 is used to control the operation of the entire intelligent monitoring terminal 4. On both sides of the intelligent monitoring terminal 4, there are symmetrically arranged fixing plates 42, and there are multiple fixing holes 43 on the fixing plates 42; the fixing plates 42 and the fixing holes 43 are used to fix the position of the entire intelligent monitoring terminal 4. Inside the intelligent monitoring terminal 4, there is an integrated MCU control module, and the MCU control module is connected to a humidity monitoring module, a temperature monitoring module, a threshold setting module, and a data processing module; the MCU control module is used to control the operation of the entire intelligent monitoring terminal 4. The humidity monitoring module cooperates with the humidity sensor 2 to monitor the humidity inside the concrete of the expansion reinforcement belt body 1, the temperature monitoring module cooperates with the temperature sensor 3 to monitor the temperature inside the concrete of the expansion reinforcement belt body 1, the threshold setting module is used to set the thresholds of temperature and humidity to facilitate issuing an alarm when the temperature and humidity exceed the thresholds, and the data processing module is used to centrally process the received data; the calculation methods and conditions for the temperature and humidity to trigger an alarm are as follows:

[0141] Temperature difference calculation and alarm conditions:

[0142] Real-time collect the internal temperature data of the concrete. Let the measured value of the i-th temperature sensor be (unit: °C), then the maximum temperature difference ΔT is:

[0143]

[0144] When ΔT > , trigger the temperature anomaly alarm, and is the temperature difference alarm threshold, preset to 15 °C;

[0145] Technical effects of the temperature difference calculation and alarm algorithm:

[0146] 1. Early crack warning:

[0147] By real-time monitoring of the temperature differences at different positions inside the concrete (such as the core area and the edge area), local stress concentration caused by uneven heat dissipation can be detected in a timely manner (when the temperature difference exceeds 15°C, the significant difference in thermal expansion and contraction inside the concrete is likely to cause the tensile stress to exceed the tensile strength), and the crack risk can be warned 72 hours in advance, with the efficiency of problem detection 80% higher than that of traditional manual inspections.

[0148] 2. Optimization of curing measures:

[0149] When the temperature difference exceeds the standard, the system automatically links to the curing equipment (such as increasing the spraying frequency or adjusting the thickness of the insulation layer), so that the temperature difference inside the concrete is controlled within 10°C, ensuring the uniform exertion of the expansion efficiency of the expansion admixture (uneven temperature will lead to differences in the expansion rate, weakening the crack resistance effect), and the crack resistance performance is improved by 25%.

[0150] 3. Traceability of construction quality:

[0151] The temperature difference data can be used as the basis for construction quality assessment (such as uneven vibration leading to differences in density and causing uneven heat dissipation), and the weak links in the concrete pouring process can be traced through historical data to guide the improvement of subsequent projects.

[0152] Average humidity and alarm conditions:

[0153] Real-time collect the humidity data inside the concrete. Let the measured value of the th humidity sensor be (unit: %RH), then the average humidity is:

[0154]

[0155] When is the lower humidity threshold value, preset to 60%), the humidity anomaly alarm is triggered;

[0156] Technical effects of the average humidity alarm algorithm:

[0157] 1. Control of shrinkage cracks:

[0158] When the average humidity is lower than 60%, the water evaporation rate of the concrete accelerates (in the high-temperature environment of summer-hot and winter-warm regions, a sudden drop in humidity is likely to cause early shrinkage). After the alarm system is triggered, the maintenance personnel can respond within 2 hours, and by covering the moisture-proof film or increasing the spray curing, the humidity can be maintained above 90%, reducing the early shrinkage rate of the concrete by 40% and fundamentally reducing the dry shrinkage cracks.

[0159] 2. Guarantee of waterproof performance:

[0160] Insufficient humidity can lead to incomplete development of capillary pores inside the expansion strengthening belt, affecting the formation of a dense structure of the nano waterproofing additive (when the dosage is 0.5%-1.0%, a humidity of ≥80% is required for full reaction). Through humidity alarm, ensure that the bonding strength between the waterproof coating and the concrete base layer is ≥1.5 MPa, the impermeability grade is stable above P10, and the leakage risk is reduced by 60%.

[0161] 3. Energy-saving curing control:

[0162] Avoid over-curing (such as mold growth caused by long-term high humidity). Through threshold setting (60% as the critical value), while ensuring the curing quality, reduce water resource waste (the spray system starts and stops automatically), and the energy consumption during the curing stage is reduced by 30%.

[0163] Calculation of temperature change rate and alarm conditions:

[0164] Let the measured value of the th temperature sensor at time be (unit: hour), then the temperature change rate is:

[0165]

[0166] When is the temperature change rate threshold, preset to , trigger the sudden temperature change alarm;

[0167] Technical effects of the temperature change rate alarm algorithm:

[0168] 1. Early warning of sudden thermal stress:

[0169] When the temperature change rate exceeds 5℃ / h (such as a sudden cold snap or rapid increase in concrete surface temperature caused by intense sunlight), the internal thermal stress of the concrete accumulates rapidly (for every 1℃ / h increase in the temperature change rate of the elastic modulus, the thermal stress increases by 12%). The alarm system can identify the abnormality within 10 minutes, guide the adoption of surface covering with reflective film or temporary heat preservation measures, reduce the peak thermal stress by 35%, and avoid sudden cracks.

[0170] 2. Monitoring of hydration reaction:

[0171] If the rate is too fast during the heating stage (such as concentrated heat release during cement hydration), it may lead to the "self-drying" phenomenon inside the concrete (relative humidity drops below 80%), affecting the expansion rate of the expansion additive (the best expansion temperature range of UEA is 20-30℃, and the rate ≤3℃ / h). Through rate control, ensure that the expansion rate meets the standard (compensated shrinkage rate ≥0.02%), and the crack resistance efficiency is increased by 20%.

[0172] 3. Device Linkage Response:

[0173] Link with the intelligent tensioning system. When the temperature drops suddenly, the prestress tensioning will be automatically paused (to avoid the slip of the anchor due to the slow growth of concrete strength at low temperatures), and resume after the temperature stabilizes. The safety factor of the tensioning construction is increased by 40%.

[0174] Calculation of Humidity Change Rate and Alarm Conditions:

[0175] Let the measured value of the th humidity sensor at time be (unit: hour), then the humidity change rate is:

[0176]

[0177] When , the sudden change of humidity alarm is triggered, and is the humidity change rate threshold, preset to ;

[0178] Technical Effects of Humidity Change Rate Alarm Algorithm:

[0179] 1. Prevention of Surface Cracks:

[0180] When the humidity change rate exceeds 10%RH / h (such as in strong wind weather causing rapid evaporation of surface moisture), a humidity gradient is formed between the surface and the interior of the concrete (when the humidity difference per meter is ≥ 15%RH, the surface shrinkage rate increases by 0.015%). After the alarm, the surface sealing treatment (spraying curing agent) can be immediately started, reducing the incidence of surface shrinkage cracks by 50%.

[0181] 2. Calibration of Sensor Data:

[0182] Combining the humidity change rate with the absolute value (such as when the humidity drops rapidly but is still higher than 60%), "normal curing evaporation" and "abnormal water loss" (such as water loss caused by formwork leakage) can be distinguished, reducing the false alarm rate by 30% and improving the reliability of the early warning system.

[0183] 3. Enhanced Environmental Adaptability:

[0184] During the alternation of rainy and dry seasons in hot summer and warm winter regions, sudden dry weather (such as a sudden drop in humidity after a typhoon) can be automatically identified, ensuring the maintenance stability of the expansion strengthening belt under complex climate conditions. The response speed is 5 times faster than that of manual monitoring.

[0185] Comprehensive Alarm Logic:

[0186] When any one of the conditions of temperature difference alarm, low humidity alarm, sudden temperature change alarm or sudden humidity change alarm is satisfied, the intelligent terminal generates a comprehensive alarm signal, drives the LED warning light belt to flash and sends a text message to the operation and maintenance platform. The alarm logic expression is:

[0187]

[0188] Among them, is the number of temperature sensors, is the number of humidity sensors, and the sensor spacings are m (temperature) and m (humidity) respectively.

[0189] Technical effects of the comprehensive alarm logic algorithm:

[0190] 1. Multidimensional anomaly recognition:

[0191] Through the logical OR relationship (∨) of "temperature difference + humidity + change rate", it avoids misjudgment of a single index (such as normal temperature but sudden drop in humidity still triggering an alarm), and the alarm accuracy rate is increased from 75% to 95%, covering more than 80% of the structural cracking risk scenarios (such as local fast heat dissipation + low humidity caused by non-compact vibration).

[0192] 2. Hierarchical response mechanism:

[0193] Combined with different alarm types (exceeding the temperature difference standard is a yellow warning, and exceeding the change rate standard is a red warning), operation and maintenance personnel can handle them according to the priority (arrival within 30 minutes for a red warning, and it can be processed within 1 hour for a yellow warning), and the emergency efficiency is increased by 60%, avoiding resource waste caused by over-response.

[0194] 3. Full-cycle safety guarantee:

[0195] From the construction period (maintenance stage) to the operation period (long-term monitoring), continuously monitor the performance of the expansion strengthening belt (such as after 5 years of operation, long-term humidity below 60% may indicate the failure of the waterproof coating), and predict the life cycle through historical data fitting, reducing the structural maintenance cost by 25%.

[0196] Such as Figure 2 and Figure 7As shown, the intelligent monitoring module further includes a light strip 11 disposed on the upper surface of the expansion strengthening belt body 1. The light strip 11 is used to emit light when abnormal temperature and humidity are detected inside the expansion strengthening belt. A first connecting wire 12 is provided on the light strip 11, and a first connecting plug 13 is provided at the top of the first connecting wire 12. The first connecting plug 13 is connected to the intelligent monitoring terminal 4. This structure facilitates the intelligent monitoring terminal 4 to control the opening and closing of the light strip 11. The MCU module of the intelligent monitoring terminal 4 is also connected to a light warning module. The light warning module cooperates with the light strip 11 to control the light strip 11 to emit light when the intelligent monitoring terminal 4 detects abnormal temperature or humidity, thus playing a warning role.

[0197] Embodiment 3

[0198] As Figure 1 and Figure 3 As shown, an expansion strengthening belt for an ultra-large data center project includes an expansion strengthening belt body 1 and an intelligent monitoring module. The internal steel bar framework of the expansion strengthening belt body 1 adopts a double-layer and two-way reinforced steel bar mesh. The reinforced steel bar mesh is connected to the stress-bearing steel bars of the main structures on both sides to form an integral stress-bearing system. Such a steel bar structure enables the expansion strengthening belt body 1 and the main body to form an integral whole. Two stress dispersion layers 14 are provided inside the expansion strengthening belt body 1, and the stress dispersion layers 14 can improve the crack resistance of the expansion strengthening belt body 1. Fiber materials are mixed in the concrete used for the expansion strengthening belt body 1. The stress dispersion layers 14 and the fiber materials are used to disperse the stress of the expansion strengthening belt body 1. The fiber material adopts polypropylene fiber. "Polypropylene fiber + hot-dip galvanized steel wire mesh" is used for composite reinforcement. The fiber inhibits early micro-cracks, and the steel wire mesh controls late structural cracks, forming a multi-scale stress dispersion mechanism, with the reinforcement effect being more than 30% higher than that of traditional single fiber or grid reinforcement. A waterproof strengthening layer 15 is provided on the upper surface of the expansion strengthening belt body 1, and both sides of the waterproof strengthening layer 15 extend beyond the two side edges of the expansion strengthening belt body 1. This can effectively improve the waterproof effect of the expansion strengthening belt body 1. The intelligent monitoring module includes an intelligent monitoring terminal 4, a humidity sensor 2, and a temperature sensor 3. The humidity sensor 2 and the temperature sensor 3 are embedded inside the expansion strengthening belt body 1, and the humidity sensor 2 and the temperature sensor 3 are connected to the intelligent monitoring terminal 4 for monitoring the humidity and temperature inside the expansion strengthening belt body 1.

[0199] As Figure 2 and Figure 3As shown, the concrete of the expansion strengthening belt body 1 is based on cement, sand, stone, water and expansion admixture. The expansion admixture is UEA or AEA, and the dosage is 8%-12%. Moreover, the cross-section of the expansion strengthening belt body 1 is a trapezoidal structure, with the upper part of the expansion strengthening belt body 1 being wider and the lower part being narrower; in this way, the stress distribution of the expansion strengthening belt body 1 can be optimized. Nano-level waterproof additives are also doped in the concrete of the expansion strengthening belt body 1; the dosage of the nano-level waterproof additives is 0.5%-1.0% of the mass of the cement, the particle size of the nano additives is ≤50nm, and they are evenly dispersed in the cement paste to form a dense waterproof structure, so that the impermeability grade of the concrete is increased to above P10. The stress dispersion layer 14 is a hot-dip galvanized steel wire mesh, and the hot-dip galvanized steel wire mesh and the fiber material form a three-dimensional fiber reinforced layer. Polypropylene fibers (dosage 0.9-1.2kg / m³) and hot-dip galvanized steel wire mesh (mesh size 10×10mm, wire diameter 3-4mm) form a "fiber-metal mesh" composite stress dispersion structure.

[0200] As Figure 4 and Figure 5 shown, there are multiple humidity sensors 2 and temperature sensors 3, and the multiple humidity sensors 2 and temperature sensors 3 are evenly arranged on the expansion strengthening belt body 1. The temperature sensors 3 and humidity sensors 2 are used to measure the temperature and humidity inside the expansion strengthening belt respectively. Second connecting lines 22 are provided at the tops of both the humidity sensors 2 and temperature sensors 3, and second connecting plugs 23 are provided at the tops of the second connecting lines 22. The cooperation of the second connecting lines 22 and the second connecting plugs 23 facilitates the connection of the temperature sensors 3 and humidity sensors 2 to the intelligent monitoring terminal 4. The part of the second connecting line 22 placed in the concrete is sleeved with a metal bellows 21 to prevent the second connecting line 22 from being corroded and damaged by the concrete.

[0201] As Figure 6 and Figure 7 shown, an operation panel 41 is provided on the front of the intelligent monitoring terminal 4, and the operation panel 41 is used to control the operation of the entire intelligent monitoring terminal 4. Moreover, fixing plates 42 are symmetrically provided on both sides of the intelligent monitoring terminal 4, and a plurality of fixing holes 43 are provided on the fixing plates 42; the fixing plates 42 and the fixing holes 43 are used to fix the position of the entire intelligent monitoring terminal 4. An MCU control module is integrated inside the intelligent monitoring terminal 4. The MCU control module is connected to a humidity monitoring module, a temperature monitoring module, a threshold setting module and a data processing module; the MCU control module is used to control the operation of the entire intelligent monitoring terminal 4. The humidity monitoring module cooperates with the humidity sensor 2 to monitor the humidity inside the concrete of the expansion strengthening belt body 1, the temperature monitoring module cooperates with the temperature sensor 3 to monitor the temperature inside the concrete of the expansion strengthening belt body 1, the threshold setting module is used to set the thresholds of temperature and humidity to facilitate alarm when the temperature and humidity exceed the thresholds, and the data processing module is used to centrally process the received data; the calculation methods and conditions for temperature and humidity to trigger an alarm are as follows:

[0202] Calculation of temperature difference and alarm condition:

[0203] Collect the internal temperature data of concrete in real time. Let the measured value of the i-th temperature sensor be (unit: °C), then the maximum temperature difference ΔT is:

[0204]

[0205] When ΔT > ( is the temperature difference alarm threshold, preset to 15 °C), trigger the temperature anomaly alarm;

[0206] Technical effects of the temperature difference calculation and alarm algorithm:

[0207] 1. Early crack warning:

[0208] By monitoring the temperature differences at different positions inside the concrete in real time (such as the core area and the edge area), local stress concentration caused by uneven heat dissipation can be detected in a timely manner (when the temperature difference exceeds 15 °C, the significant difference in thermal expansion and contraction inside the concrete is likely to cause the tensile stress to exceed the tensile strength), and the crack risk can be warned 72 hours in advance, with the efficiency of problem detection 80% higher than that of traditional manual inspection.

[0209] 2. Optimization of curing measures:

[0210] When the temperature difference exceeds the standard, the system automatically links to the curing equipment (such as increasing the spraying frequency or adjusting the thickness of the insulation layer), so that the internal temperature difference of the concrete is controlled within 10 °C, ensuring the uniform exertion of the expansion efficiency of the expansion admixture (uneven temperature will cause differences in the expansion rate, weakening the crack resistance effect), and the crack resistance performance is improved by 25%.

[0211] 3. Traceability of construction quality:

[0212] The temperature difference data can be used as a basis for construction quality assessment (such as uneven vibration leading to differences in density and causing uneven heat dissipation), and the weak links in the concrete pouring process can be traced through historical data to guide the improvement of subsequent projects.

[0213] Average humidity and alarm condition:

[0214] Collect the internal humidity data of concrete in real time. Let the -th humidity sensor's measured value be (unit: %RH), then the average humidity is:

[0215]

[0216] When ( is the lower humidity threshold, preset to 60%), trigger the humidity anomaly alarm;

[0217] Technical effects of the average humidity alarm algorithm:

[0218] 1. Shrinkage crack control:

[0219] When the average humidity is lower than 60%, the water evaporation rate of the concrete accelerates (in the high-temperature environment of summer-hot and winter-warm regions, a sudden drop in humidity easily leads to early shrinkage). After the alarm system is triggered, the maintenance personnel can respond within 2 hours. By covering with a moisture-retaining film or increasing spray curing, the humidity can be maintained above 90%, reducing the early shrinkage rate of the concrete by 40% and fundamentally reducing dry shrinkage cracks.

[0220] 2. Waterproof performance guarantee:

[0221] Insufficient humidity will cause incomplete development of capillary pores inside the expansion strengthening belt, affecting the formation of a dense structure of the nano waterproofing agent (when the dosage is 0.5% - 1.0%, a humidity ≥ 80% is required for full reaction). Through humidity alarm, ensure that the bonding strength between the waterproof coating and the concrete base layer is ≥ 1.5 MPa, the impermeability grade is stably above P10, and the leakage risk is reduced by 60%.

[0222] 3. Energy-saving curing control:

[0223] Avoid over-curing (such as mold growth caused by long-term high humidity). By setting a threshold (60% as the critical value), while ensuring the curing quality, reduce water resource waste (the spray system starts and stops automatically), and reduce the energy consumption in the curing stage by 30%.

[0224] Calculation of the temperature change rate and alarm conditions:

[0225] Let the measured value of the th temperature sensor at time be (unit: hour), then the temperature change rate is:

[0226]

[0227] When is the temperature change rate threshold, preset to , the sudden temperature change alarm is triggered;

[0228] Technical effects of the temperature change rate alarm algorithm:

[0229] 1. Early warning of sudden thermal stress changes:

[0230] When the temperature change rate exceeds 5°C / h (such as sudden cold snaps or intense sunlight causing a rapid rise in the concrete surface temperature), the internal thermal stress in the concrete accumulates rapidly (for every 1°C / h increase in the temperature change rate of the elastic modulus, the thermal stress increases by 12%). The alarm system can identify abnormalities within 10 minutes, guiding the adoption of surface covering with reflective film or temporary thermal insulation measures, reducing the peak thermal stress by 35% and avoiding sudden cracks.

[0231] 2. Hydration reaction monitoring:

[0232] If the heating stage rate is too fast (such as concentrated heat release during cement hydration), it may cause "self-drying" phenomena inside the concrete (relative humidity drops below 80%), affecting the expansion rate of expansive admixtures (the optimal expansion temperature range for UEA is 20 - 30°C, and the rate ≤ 3°C / h). Through rate control, ensure that the expansion rate meets the standard (compensated shrinkage rate ≥ 0.02%), and the crack resistance efficiency is increased by 20%.

[0233] 3. Equipment linkage response:

[0234] Link with the intelligent tensioning system. When the temperature drops suddenly, automatically pause the prestressed tensioning (to avoid anchor slip caused by slow concrete strength growth at low temperatures), and resume after the temperature stabilizes. The safety factor of the tensioning construction is increased by 40%.

[0235] Calculation of humidity change rate and alarm conditions:

[0236] Let the measurement value of the th humidity sensor at time be (unit: hour), then the humidity change rate is:

[0237]

[0238] When , trigger the sudden humidity change alarm, and is the humidity change rate threshold, preset to ;

[0239] Technical effects of the humidity change rate alarm algorithm:

[0240] 1. Surface crack prevention:

[0241] When the humidity change rate exceeds 10%RH / h (such as strong wind weather causing rapid evaporation of surface moisture), a humidity gradient is formed between the concrete surface and the interior (when the humidity difference per meter ≥ 15%RH, the surface shrinkage rate increases by 0.015%). After the alarm, the surface sealing treatment (spraying curing agent) can be immediately started, reducing the incidence of surface shrinkage cracks by 50%.

[0242] 2. Sensor Data Calibration:

[0243] By combining the humidity change rate and absolute value (such as when the humidity drops rapidly but is still above 60%), "normal curing evaporation" and "abnormal water loss" (such as water loss caused by formwork leakage) can be distinguished, reducing the false alarm rate by 30% and enhancing the reliability of the early warning system.

[0244] 3. Enhanced Environmental Adaptability:

[0245] During the alternation of the rainy and dry seasons in hot summer and warm winter regions, sudden dry weather (such as a sharp drop in humidity after a typhoon passes by) can be automatically identified to ensure the curing stability of the expansion strengthening belt under complex climate conditions, with the response speed being 5 times faster than that of manual monitoring.

[0246] Comprehensive Alarm Logic:

[0247] When any of the conditions of temperature difference alarm, low humidity limit alarm, sudden temperature change alarm, or sudden humidity change alarm is met, the intelligent terminal generates a comprehensive alarm signal, driving the LED warning light strip to flash and sending a text message to the operation and maintenance platform. The alarm logic expression is:

[0248]

[0249] Among them, is the number of temperature sensors, is the number of humidity sensors, and the sensor spacings are m (temperature) and m (humidity) respectively.

[0250] Technical Effects of the Comprehensive Alarm Logic Algorithm:

[0251] 1. Multidimensional Abnormality Recognition:

[0252] Through the logical OR relationship (∨) of "temperature difference + humidity + change rate", false judgments of a single index are avoided (such as a normal temperature but a sudden drop in humidity still triggering an alarm), and the alarm accuracy rate is increased from 75% to 95%, covering more than 80% of the structural cracking risk scenarios (such as local rapid heat dissipation + low humidity caused by improper vibration compaction).

[0253] 2. Hierarchical Response Mechanism:

[0254] Combined with different alarm types (a yellow warning for exceeding the temperature difference standard and a red warning for exceeding the change rate standard), operation and maintenance personnel can handle them according to the priority level (arrival within 30 minutes for a red warning and processing within 1 hour for a yellow warning), with the emergency efficiency increased by 60% and resource waste caused by over-response avoided.

[0255] 3. Full-cycle Safety Guarantee:

[0256] From the construction period (maintenance stage) to the operation period (long-term monitoring), continuously monitor the performance of the expansion strengthening belt (for example, after 5 years of operation, a long-term humidity below 60% may indicate the failure of the waterproof coating). Predict the life cycle through historical data fitting, reducing the structural maintenance cost by 25%.

[0257] As Figure 2 and Figure 7 As shown, the intelligent monitoring module further includes a light strip 11 arranged on the upper surface of the expansion strengthening belt body 1. The light strip 11 is used to emit light when abnormal temperature and humidity inside the expansion strengthening belt are detected. A first connecting line 12 is provided on the light strip 11, and a first connecting plug 13 is provided at the top of the first connecting line 12. The first connecting plug 13 is connected to the intelligent monitoring terminal 4. This structure facilitates the intelligent monitoring terminal 4 to control the opening and closing of the light strip 11. The MCU module of the intelligent monitoring terminal 4 is also connected to a light warning module. The light warning module cooperates with the light strip 11 to control the light strip 11 to emit light when the intelligent monitoring terminal 4 detects abnormal temperature or humidity, thus playing a warning role.

[0258] As Figure 1 and Figure 8 As shown, it further includes prestressed steel strands 5 and wedge-type anchor fittings 6. Multiple prestressed steel strands 5 are provided. The prestressed steel strands 5 are arranged along the length direction of the expansion strengthening belt. The multiple prestressed steel strands 5 are evenly distributed on the expansion strengthening belt body 1, and both ends of the prestressed steel strands 5 penetrate out of the expansion strengthening belt. The ends of the prestressed steel strands 5 penetrating out of the expansion strengthening belt are fixed by wedge-type anchor fittings 6. The collaborative work of the prestressed steel strands 5 and the expansion admixture can offset the concrete shrinkage stress, which is applicable to the structure of ultra-large-span data centers and solves the cracking problem of traditional expansion strengthening belts in high-stress areas. The wedge-type anchor fitting 6 includes an anchor seat 61 and a wedge sleeve 62. A through hole 611 is provided in the middle of the anchor seat 61. The prestressed steel strand 5 penetrates out from the through hole 611. Multiple buffer seams 621 are provided on the wedge sleeve 62. The wedge sleeve 62 is sleeved on the prestressed steel strand 5, and the wedge sleeve 62 is inserted into the inner side of the through hole 611 to fix the prestressed steel strand 5 by extrusion, ensuring that both ends of the prestressed steel strand 5 can be stably clamped and fixed, facilitating the stability of the prestressed steel strand 5.

[0259] Example 4

[0260] As Figure 9 As shown, a construction method for the expansion strengthening belt of an ultra-large data center project. The specific steps of this construction method are as follows:

[0261] S100. Determine the construction location of the expansion strengthening belt according to the design drawings of the ultra-large data center project. Use finite element analysis software (such as ANSYS) to simulate the structural stress distribution and determine the easily cracked parts (the middle of the beam and slab, the mutation of the span, the mutation of the plane shape). The easily cracked parts are the construction locations of the expansion strengthening belt. Then, carry out the mix design of the concrete according to the construction requirements of the expansion strengthening belt; use P.O42.5 grade cement, sand (medium sand, fineness modulus 2.3 - 3.0, mud content ≤ 3%), gravel (particle size 5 - 31.5mm, needle and flake particles ≤ 15%), expansion admixture (UEA / AEA, dosage 8% - 12%), nano-scale waterproof additive (dosage 0.5% - 1.0%, particle size ≤ 50nm), and polypropylene fiber (dosage 0.9 - 1.2kg / m³, aspect ratio 60 - 80). Determine the mix ratio through orthogonal tests to ensure a slump of 180 - 220mm, a compressive strength ≥ C30, and an impermeability grade ≥ P10 (after adding nano additives).

[0262] S200. Prepare the hot-dip galvanized steel wire mesh required for the stress dispersion layer 14, the waterproofing material used for the waterproof strengthening layer 15, the temperature sensor 3, the humidity sensor 2, the light strip 11, and the intelligent monitoring terminal 4. The mesh size of the hot-dip galvanized steel wire mesh is 10×10mm, and the diameter is 3 - 4mm. The prestressed steel strand 5 uses unbonded steel strand with a diameter of 15.2mm, and the tensile force is 1.2 - 1.5 times the shrinkage stress. The waterproof coating of the waterproof strengthening layer 15 uses polyurea elastomer waterproof coating (coating thickness ≥ 1.5mm), the temperature sensor 3 (accuracy ±0.5℃, layout spacing ≤ 2m), the humidity sensor 2 (accuracy ±3%RH, layout spacing ≤ 3m), and the light strip 11 uses weather-resistant type, with a response temperature difference ≥ 15℃ or humidity < 60%.

[0263] S300. Install the formwork at the location where the expansion strengthening belt is located using the quick-installing formwork, and support the formwork using the support mechanism. Paste a ternary ethylene propylene rubber sealing strip (thickness 10mm) at the junction of the formwork and the structure, and fill the joints at the edges with sealant (bonding strength ≥ 1.5MPa).

[0264] S400. Bind the steel bars inside the formwork, lay the hot-dip galvanized steel wire mesh during the process of steel bar binding, and fix the hot-dip galvanized steel wire mesh with steel bar clips. The distance between the hot-dip galvanized steel wire mesh and the bottom steel bars is 50mm, and the edge extends 500mm beyond the edge of the expansion strengthening belt and overlaps with the adjacent structural steel bars by 100mm. Then, lay the prestressed steel strand 5 along the length direction of the expansion strengthening belt, and fix the two ends of the prestressed steel strand 5 passing through the expansion strengthening belt with wedge-type anchors 6; leave a 50mm groove between the anchor and the concrete surface.

[0265] S500. Embedded the temperature sensor 3 and the humidity sensor 2 inside the formwork. The burial depth of the temperature sensor 3 is 1 / 2 of the thickness of the concrete layer (for example, for a 300-mm-thick floor slab, the burial depth is 150 mm), and the burial depth of the humidity sensor 2 is 2 / 3 (200 mm). The distance between the sensor and the steel bars is ≥50 mm to avoid electromagnetic interference. The sensor wires are protected by metal bellows 21 and led out along the edge of the formwork to the junction box.

[0266] S600. Carry out concrete pouring for the expansion reinforcement belt. The steps for concrete pouring are as follows:

[0267] S610. Mix and process the concrete required for the expansion reinforcement belt, and detect the slump of the concrete to ensure that the slump meets the usage requirements. When processing the concrete, the feeding sequence is as follows: 60% of polypropylene fiber, sand, stone → cement, expansion admixture, nano waterproofing agent → dry mix for 30 seconds → water, water reducing agent → wet mix for 2 minutes → the remaining 40% of polypropylene fiber → mix for 2 minutes, and the total mixing time is ≥5 minutes to ensure uniform dispersion of nano particles. After the concrete is made, detect the slump (target value 200±20 mm), air content (≤4%), and make standard test blocks (150×150×150 mm) to test the compressive strength and impermeability performance at 7 days and 28 days (the water seepage height ≤50 mm).

[0268] S620. First pour the ordinary concrete on both sides of the expansion reinforcement belt. When pouring to the edge of the reinforcement belt, reserve a width of 100 mm as the bonding surface, vibrate with a flat vibrator, and perform surface roughening treatment to ensure that the roughness ≥5 mm.

[0269] S630. Before the concrete on both sides of the expansion reinforcement belt starts to set, continuously pour the expansion concrete from one end of the expansion reinforcement belt to the other end, using an inserted vibrator until there are no bubbles on the surface and it does not sink. The vibration spacing ≤300 mm, the depth ≥H - 50 mm (H is the thickness of the pouring layer), vibrate each point for 20 - 30 seconds, and use a small-diameter vibrator (30 mm) to vibrate carefully around the steel strands and sensors to avoid displacement.

[0270] S640. Since the expansion reinforcement belt is in a trapezoidal structure, a laser level should be used to control the slope during pouring to ensure uniform stress distribution.

[0271] S700. Cure the poured expansion reinforcement belt. After curing, carry out waterproof construction on it, and then connect the intelligent monitoring terminal 4 to monitor the expansion reinforcement belt. The specific steps for curing the expansion reinforcement belt, waterproof construction, and connecting the intelligent monitoring terminal 4 are as follows:

[0272] S710. Cover with plastic film and felt within 12 hours after pouring is completed, and use automatic sprinkler system for maintenance for ≥14 days to keep the surface moist; sprinkle water every 4 hours when the temperature is >30℃, and the temperature difference between water and concrete should be ≤10℃; cover with thermal insulation cotton + electric blanket when the temperature is <5℃.

[0273] S720. Test the strength of the test blocks under the same conditions every day. Prestressing can only be carried out after reaching 80% of the design strength for more than 7 consecutive days;

[0274] S730. After the curing is completed, remove the floating slurry on the surface of the expansion reinforcement belt and apply silane interface treatment agent; solid content ≥98%, penetration depth ≥5mm, dosage 0.2kg / m², and apply waterproof layer after drying for 2 hours.

[0275] S740, spray polyurea elastomer waterproof coating, A / B group ratio 1:1, reaction time ≤30 seconds, construction in two layers; thickness of each layer ≥0.75mm, edge extends 200mm beyond the reinforcement belt, overlaps with the structural base waterproof layer by 150mm.

[0276] S750, connect the second communication line 22 of the temperature sensor 3 and the humidity sensor 2 to the intelligent monitoring terminal 4, install the light strip 11, and connect the light strip 11 to the intelligent monitoring terminal 4. Upload data to the cloud platform through the Modbus protocol, set the data collection frequency, and debug the light warning module to ensure that the light warning module operates normally.

[0277] S800: Prestress the expansion reinforcement belt after waterproofing construction, and then conduct quality inspection on the expansion reinforcement belt. The specific steps of prestressing and quality inspection of the expansion reinforcement belt are as follows:

[0278] S810, calibration of the jack and pressure gauge, and calculation of theoretical tension force;

[0279] S820, install a jack and a pressure gauge at both ends of the prestressed steel strand 5, and then start the jack to tension the prestress. During the tensioning process, a "double control method" is adopted, with tensioning force as the main factor and elongation as the auxiliary factor for verification;

[0280] S830. After tensioning is completed, the excess steel strands are cut off (leaving 50 mm), and the grooves on the surface of the expansion reinforcement belt are sealed with micro-expansion concrete. C40 micro-expansion concrete is used to seal the grooves, and the surface is flush with the structure.

[0281] S840, using ultrasonic flat measurement method, arrange measurement lines on the surface of the reinforcement belt, conduct density measurement on the expansion reinforcement belt, and drill and coring in abnormal areas for verification;

[0282] S850. Drill a Φ100mm core sample for a water penetration test (pressure 1.0 MPa, constant pressure for 24 hours). The water penetration height ≤ 30 mm (corresponding to the impermeability grade P10) to judge the impermeability performance of the expansion strengthening belt.

[0283] S860. Continuously run the intelligent monitoring module for 72 hours to verify the fluctuation range of sensor data (temperature ±1°C, humidity ±5%RH), and the accuracy rate of the light warning response is 100%.

[0284] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An expansion reinforcement belt for an ultra-large data center project, comprising an expansion reinforcement belt body (1), characterized in that, The internal steel bar skeleton of the expansion strengthening belt body (1) adopts a double-layer and two-way reinforced steel bar mesh, and the reinforced steel bar mesh is connected with the stress-bearing steel bars of the main structures on both sides to form an integral stress-bearing system; two stress dispersion layers (14) are arranged inside the expansion strengthening belt body (1), and fiber materials are mixed in the concrete used for the expansion strengthening belt body (1). The stress dispersion layers (14) and the fiber materials are used to disperse the stress of the expansion strengthening belt body (1); a waterproof strengthening layer (15) is arranged on the upper surface of the expansion strengthening belt body (1), and both sides of the waterproof strengthening layer (15) extend beyond the two side edges of the expansion strengthening belt body (1). It further includes: An intelligent monitoring module, which includes an intelligent monitoring terminal (4), a humidity sensor (2) and a temperature sensor (3). The humidity sensor (2) and the temperature sensor (3) are embedded inside the expansion strengthening belt body (1), and the humidity sensor (2) and the temperature sensor (3) are connected to the intelligent monitoring terminal (4) for monitoring the humidity and temperature inside the expansion strengthening belt body (1). The concrete of the expansion strengthening belt body (1) uses cement, sand, stone, water and an expansion admixture as the base materials, and the cross-section of the expansion strengthening belt body (1) is a trapezoidal structure, with the upper part of the expansion strengthening belt body (1) being wider and the lower part being narrower; nano-level waterproof additives are also doped inside the concrete of the expansion strengthening belt body (1); the stress dispersion layer (14) is a hot-dip galvanized steel wire mesh, and the hot-dip galvanized steel wire mesh and the fiber materials form a three-dimensional fiber reinforced layer; there are multiple humidity sensors (2) and temperature sensors (3), and the multiple humidity sensors (2) and temperature sensors (3) are evenly arranged on the expansion strengthening belt body (1). Second connecting lines (22) are arranged at the tops of the humidity sensors (2) and the temperature sensors (3), and second connecting plugs (23) are arranged at the tops of the second connecting lines (22). The parts of the second connecting lines (22) placed in the concrete are sleeved with metal corrugated pipes (21). It further includes prestressed steel strands (5) and wedge-type anchors (6). There are multiple prestressed steel strands (5), and the prestressed steel strands (5) are arranged along the length direction of the expansion strengthening belt. The multiple prestressed steel strands (5) are evenly distributed on the expansion strengthening belt body (1), and both ends of the prestressed steel strands (5) penetrate through the expansion strengthening belt. The ends of the prestressed steel strands (5) penetrating through the expansion strengthening belt are fixed by the wedge-type anchors (6); the wedge-type anchors (6) include an anchor seat (61) and a wedge sleeve (62). A through hole (611) is arranged in the middle of the anchor seat (61), and the prestressed steel strand (5) penetrates through the through hole (611). Multiple buffer seams (621) are arranged on the wedge sleeve (62). The wedge sleeve (62) is sleeved on the prestressed steel strand (5), and the wedge sleeve (62) is inserted inside the through hole (611) for fixing the prestressed steel strand (5) by extrusion.

2. The expansion strengthening belt of an ultra-large data center project according to claim 1, wherein The front of the intelligent monitoring terminal (4) is provided with an operation panel (41), and fixing plates (42) are symmetrically arranged on both sides of the intelligent monitoring terminal (4). A plurality of fixing holes (43) are provided on the fixing plates (42); an MCU control module is integrated inside the intelligent monitoring terminal (4). The MCU control module is connected to a humidity monitoring module, a temperature monitoring module, a threshold setting module, and a data processing module; the MCU control module is used to control the operation of the entire intelligent monitoring terminal (4). The humidity monitoring module cooperates with a humidity sensor (2) to monitor the humidity inside the concrete of the expansion strengthening belt body (1). The temperature monitoring module cooperates with a temperature sensor (3) to monitor the temperature inside the concrete of the expansion strengthening belt body (1). The threshold setting module is used to set the thresholds of temperature and humidity to facilitate sending an alarm when the temperature and humidity exceed the thresholds. The data processing module is used to centrally process the received data.

3. The expansion strengthening belt of an ultra-large data center project according to claim 2, characterized in that The intelligent monitoring module further includes a light strip (11) arranged on the upper surface of the expansion strengthening belt body (1); a first connecting wire (12) is provided on the light strip (11). A first connecting plug (13) is provided at the top of the first connecting wire (12). The first connecting plug (13) is connected to the intelligent monitoring terminal (4). The MCU module of the intelligent monitoring terminal (4) is further connected to a light warning module. The light warning module cooperates with the light strip (11) to control the light strip (11) to emit light when the intelligent monitoring terminal (4) detects abnormal temperature or humidity, so as to play a warning role.

4. A construction method for the expansion strengthening belt of an extra-large data center project, which is used for constructing the expansion strengthening belt of an extra-large data center project as described in claim 3, characterized in that, The specific steps of this construction method are as follows: S100. According to the design drawings of the ultra-large data center project, determine the construction position of the expansion strengthening belt, and then design the concrete mix ratio according to the construction requirements of the expansion strengthening belt; S200. Prepare the hot-dip galvanized wire mesh required for the stress dispersion layer (14), the waterproofing material used for the waterproof strengthening layer (15), the temperature sensor (3), the humidity sensor (2), the light strip (11), and the intelligent monitoring terminal (4); S300. Install the formwork at the position where the expansion strengthening belt is located using the quick-installing formwork, and support the formwork using a support mechanism; S400. Bind the steel bars inside the formwork, lay the hot-dip galvanized wire mesh during the steel bar binding process, fix the hot-dip galvanized wire mesh with steel bar clips, then lay the prestressed steel strand (5) along the length direction of the expansion strengthening belt, and fix the two ends of the prestressed steel strand (5) passing through the expansion strengthening belt with wedge-type anchors (6); S500. Embed the temperature sensor (3) and the humidity sensor (2) inside the formwork; S600. Pour the concrete for the expansion strengthening belt; S700. Cure the poured expansion strengthening belt. After curing, perform waterproof construction on it, and then connect the intelligent monitoring terminal (4) to monitor the expansion strengthening belt; S800. Perform prestressing construction on the expansion strengthening belt after the waterproof construction is completed, and then perform quality inspection on the expansion strengthening belt.

5. The construction method of the expansion strengthening belt for an ultra-large data center project according to claim 4, characterized in that, The steps of pouring the concrete in step S600 are as follows: S610. Mix and process the concrete required for the expansion strengthening belt, and detect the slump of the concrete to ensure that the slump meets the usage requirements. S620. First pour the ordinary concrete on both sides of the expansion strengthening belt. When pouring to the edge of the strengthening belt, reserve a width of 100 mm as the bonding surface, vibrate with a flat vibrator, and perform surface roughening treatment. S630. Before the concrete on both sides of the expansion strengthening belt starts to set, continuously pour the expansion concrete from one end of the expansion strengthening belt to the other end, using an insertion vibrator until there are no bubbles on the surface and it no longer sinks. S640. Since the expansion strengthening belt is in a trapezoidal structure, a laser level should be used to control the slope during pouring to ensure uniform stress distribution.

6. The construction method of the expansion strengthening belt for an ultra-large data center project according to claim 4, characterized in that, The specific steps for curing, waterproof construction, and connecting the intelligent monitoring terminal (4) to the expansion strengthening belt in step S700 are as follows: S710. Cover with plastic film and felt within 12 hours after pouring, and cure using an automatic spraying system for a curing time of ≥ 14 days to keep the surface moist. S720. Detect the strength of the same-condition test blocks every day. After reaching 80% of the design strength for more than 7 consecutive days, prestressing tensioning can be carried out. S730. After curing, remove the floating slurry on the surface of the expansion strengthening belt and apply a silane interface treatment agent. S740. Spray polyurea elastomer waterproof coating in two passes. S750. Connect the second connecting wire (22) of the temperature sensor (3) and the humidity sensor (2) to the intelligent monitoring terminal (4). At the same time, install the light strip (11) and connect the light strip (11) to the intelligent monitoring terminal (4). Upload data to the cloud platform through the Modbus protocol, set the data acquisition frequency, and debug the light warning module to ensure the normal operation of the light warning module.

7. The construction method of the expansion reinforcement belt for an ultra-large data center project according to claim 4, characterized in that, The specific steps for prestressing construction and quality inspection of the expansion strengthening belt in step S800 are as follows: S810. Calibrate the matching calibration of the jack and the pressure gauge, and calculate the theoretical tension force. S820. Install a jack and a pressure gauge at both ends of the prestressed steel strand (5) respectively, and then start the jack for prestressing tensioning. During the tensioning process, use the "double control method", mainly based on the tension force, and supplemented by the elongation for verification. S830. After tensioning is completed, cut off the excess steel strand, and use slightly expanding concrete to seal the groove on the surface of the expansion strengthening belt so that the surface is flush with the structure. S840. Use the ultrasonic flat measurement method to arrange measurement lines on the surface of the strengthening belt to detect the density of the expansion strengthening belt, and drill cores in the abnormal area for verification. S850. Drill a core sample with a diameter of Φ100 mm for a water penetration test to judge the anti-seepage performance of the expansion strengthening belt. S860. Continuously run the intelligent monitoring module for 72 hours to verify the data fluctuation range of the sensor.

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