A machine room column foundation integrated intelligent high-speed expansion gantry system

Abstract

The application discloses a machine room stand column foundation integrated intelligent high-speed expansion type portal system, and belongs to the field of traffic engineering and its auxiliary facilities. The system comprises: a monolithic reinforced concrete foundation unit which integrally connects a stand column load-bearing area and a machine room supporting area; a multifunctional integrated stand column unit which is vertically fixed to the foundation unit, and is internally provided with a strong current transmission channel, a weak current signal channel and a vertical ventilation pipeline, and is provided with an electromagnetic shielding structure between the strong and weak current channels; an embedded environment control machine room unit which is arranged in the machine room supporting area of the foundation unit, and has a side wall which is co-constructed with a lower pipe wall of the stand column; and a modular expansion type cross beam unit which is formed by axially splicing a main beam section and an expansion beam section, and horizontally spans above a road surface. Through the three-in-one co-constructed design, the road side space utilization rate and the structural stability are improved, and the system has flexible expansion capability and intelligent operation and maintenance functions.

Description

Technical Field

[0001] This invention belongs to the field of traffic engineering and its ancillary facilities, and specifically relates to a smart high-speed expandable gantry system with integrated computer room column foundation. Background Technology

[0002] In the construction of intelligent transportation systems, the digital and intelligent transformation of highway infrastructure is a key guarantee for achieving vehicle-road collaboration and efficient operation. As the core physical carrier of sensing equipment, communication facilities, and edge computing units, the intelligent highway gantry system plays an irreplaceable role in applications such as real-time traffic monitoring, non-stop toll collection, overload control, and traffic flow information exchange. Its overall efficiency and deployment flexibility directly determine the collaborative capabilities and digital service level of highway roadside infrastructure.

[0003] Among them, the extended gantry system, which integrates equipment room facilities and column foundation structure, has become an important direction in the evolution of smart highway infrastructure. This type of system aims to optimize the physical configuration of the gantry and coordinate the deployment of the originally scattered power distribution system, network transmission unit and environmental monitoring module, thereby improving the utilization rate of roadside space and providing stronger structural support and stable energy and communication guarantee capabilities for the increasing hardware mounting requirements of smart highways.

[0004] However, existing highway gantry systems typically employ a split design, leading to numerous bottlenecks in practical engineering applications. Specifically, the equipment room and gantry columns are usually located and constructed independently, significantly increasing the land area required for construction and prolonging the civil engineering construction period. Furthermore, long-distance low-voltage cabling between the two can easily cause signal attenuation and weaken anti-interference capabilities. Traditional split foundation structures often experience uneven settlement under complex geological conditions, affecting the overall structural stability of the gantry, and lack coordinated stress design for the equipment room environment and column loads. In addition, existing gantry systems have limited expansion space and insufficient structural strength redundancy, making it difficult to adapt to the ever-evolving and diverse sensing equipment mounting requirements of smart highways. This often necessitates large-scale structural modifications or re-establishment of stations during system upgrades, severely restricting the sustainable development and operational efficiency of smart highways. Summary of the Invention

[0005] The purpose of this invention is to provide a smart high-speed expandable gantry system that integrates the computer room column foundation, in order to solve the problems mentioned in the background art, such as large space occupation, long construction period, high signal transmission loss, poor geological adaptability, and insufficient expansion redundancy caused by the independent construction of the computer room and gantry columns.

[0006] The technical solution of this invention is a smart high-speed expandable gantry system with integrated computer room column foundation, comprising: The monolithic reinforced concrete foundation unit is used to provide unified stress support and settlement control for the entire system. The monolithic reinforced concrete foundation unit consists of a column load-bearing area and a machine room support area. The column load-bearing area and the machine room support area form an integrated whole connection structure through the internally continuously arranged longitudinal stress reinforcement and transverse distribution reinforcement. The multi-functional integrated column unit is vertically fixed to the column load-bearing area of ​​the integral reinforced concrete foundation unit. The multi-functional integrated column unit adopts a hollow cavity structure, which is equipped with a high-voltage transmission channel, a low-voltage signal channel and a vertical ventilation duct. The bottom outer wall of the multi-functional integrated column unit is rigidly connected to the computer room structure. The embedded environmental control room unit is located in the room support area of ​​the integral reinforced concrete foundation unit. One side wall of the embedded environmental control room unit is co-constructed with the lower pipe wall of the multi-functional integrated column unit to form a cabinet storage space, power distribution management space and heat exchange space. Modular extended beam units span horizontally over the highway surface and are connected to the top of the multifunctional integrated column units via high-strength flange assemblies; The intelligent operation and maintenance unit is integrated into the embedded environmental control room unit and extends to the modular extended beam unit. It is used to monitor the structural health status, environmental parameters, and the operating status of sensing equipment in real time.

[0007] Furthermore, the planar projection length and width of the monolithic reinforced concrete foundation unit are dynamically determined through a nonlinear mapping calculation model. The model is calculated based on the characteristic value of the foundation bearing capacity, the depth of the groundwater level, and the internal friction angle of the soil in the road section, so as to control the cumulative settlement of the foundation to within 5 mm.

[0008] Furthermore, inside the multifunctional integrated column unit, a cold-rolled silicon steel sheet electromagnetic shielding partition is installed between the high-voltage transmission channel and the low-voltage signal channel. The electromagnetic shielding partition is fixed to the inner wall of the column through a continuous full welding process to provide a shielding efficiency of no less than 80 dB in an electromagnetic environment of 30 MHz to 1000 MHz.

[0009] Furthermore, the vertical ventilation ducts of the multi-functional integrated column unit are connected to the heat exchange space of the embedded environmental control room unit, forming a heat dissipation channel; the system's intelligent operation and maintenance unit is configured as follows: Obtain the temperature value within the embedded environmental control room unit; When the temperature value is higher than the first start-up threshold, the air volume regulating valve at the bottom of the vertical ventilation duct is opened, and the valve opening is linearly adjusted based on the difference between the temperature value and the first start-up threshold. When the temperature value is higher than the second start-up threshold, the controlled fan at the top of the vertical ventilation duct is started, and the fan speed is linearly adjusted based on the difference between the temperature value and the first start-up threshold.

[0010] Furthermore, the modular extended beam unit consists of a main beam segment and at least one extended beam segment. The main beam segment and the extended beam segment are axially spliced ​​together by an inner sleeve connection structure and a high-strength bolt group. The fit tolerance of the inner sleeve connection structure is controlled within 0.5 mm, and it is circumferentially fastened by no less than 24 grade 10.9 friction type high-strength bolts. Anti-slip safety chains are also set at the splicing position, forming two safety protection systems.

[0011] Furthermore, the intelligent operation and maintenance unit of the system includes a structural state perception subsystem, an environmental monitoring subsystem, and an edge computing center; The structural state sensing subsystem includes accelerometers distributed at the root of the multifunctional integrated column unit, static strain gauges in the middle of the modular extended beam unit, and tilt sensors at the flange connection. The environmental monitoring subsystem includes temperature and humidity sensors, smoke detectors, water immersion sensors, and a miniature weather station on top of a multi-functional integrated column unit within the embedded environmental control room unit. The edge computing center adopts a dual-machine hot standby architecture, interconnects with various subsystems via fiber optic links, and supports 5G mobile communication protocols.

[0012] Furthermore, the system's intelligent operation and maintenance unit is also configured to execute a structural damage identification algorithm, which includes: Obtain the dynamic response time history curves of the gantry system under random environmental excitation; The dynamic response time history curve is transformed into the frequency domain power spectral density by fast Fourier transform, and the first three natural frequencies are extracted. The real-time extracted inherent frequency is compared with the reference frequency at the initial system installation, and the frequency change rate is calculated. If the frequency change rate exceeds 5%, it is judged as a Level 1 structural health warning. If the frequency change rate exceeds 10% and the absolute value of the deflection angle fed back by the tilt sensor exceeds 0.5 degrees, a Level 2 warning will be triggered. If the frequency change rate exceeds 15% and the measured stress value of the static strain gauge exceeds the elastic limit threshold, it is determined to be a critical state of structural damage and a level 3 warning is triggered.

[0013] Furthermore, the outer wall of the embedded environmental control room unit is made of double-layer composite metal sandwich panels, with the middle layer filled with fireproof rock wool material; the interior of the room is raised by an anti-static raised floor, with the space below serving as a precision wiring layer; the door of the room is equipped with a three-point anti-theft alarm lock and a dual authentication access control system with facial recognition and contactless radio frequency identification cards.

[0014] Furthermore, the bottom perimeter of the multifunctional integrated column unit is provided with a drainage slope, which is formed by on-site casting of concrete and slopes outward; the contact surface between the multifunctional integrated column unit and the integral reinforced concrete foundation unit is coated with an anti-corrosion coating, which includes an epoxy zinc-rich paint as the base layer and an aliphatic polyurethane paint as the top layer.

[0015] Furthermore, the upper surface of the modular extended beam unit is pre-installed with a standardized slide rail mounting interface, which supports stepless adjustment along the beam axis. The modular extended beam unit has a pre-installed distributed power distribution unit and optical cable splice box, which supports plug-and-play of mounted equipment and remote controlled power failure restart.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. This invention integrates the computer room, columns, and foundation into a single design, which not only eliminates the gap between the computer room and columns in the traditional split structure, saving construction land area, but also utilizes the column cavity as a cable channel and heat dissipation duct, greatly improving the efficiency of intensive use of roadside space.

[0017] 2. This invention employs an integral reinforced concrete foundation unit, combining two originally independent foundations into one, fundamentally solving the structural misalignment problem caused by uneven settlement. Through the rigid connection between the column load-bearing area and the machine room support area, and the overall arrangement of the reinforcing steel bars, a large base plate support system is constructed, enabling the gantry system to better adapt to soft soil, sandy soil, or complex and variable geological conditions, thereby improving the long-term operational reliability of the system.

[0018] 3. This invention supports the overall casting of the foundation and the modular assembly of the superstructure, avoiding the cumbersome process of multiple civil constructions and secondary wiring in traditional solutions. Factory-prefabricated columns and beams can be quickly assembled on-site, improving construction efficiency by more than 50% and reducing the probability of malfunctions caused by exposed wiring or loose interfaces during later maintenance.

[0019] 4. The modular expandable beam unit of this invention, combined with high-strength bolt splicing technology, allows the gantry span to be rapidly expanded according to the increase in the number of lanes without dismantling the original main structure. Simultaneously, the intelligent operation and maintenance unit provides comprehensive monitoring and edge computing capabilities, offering ample computing resources and a stable physical environment for the equipment upgrades of smart highways. This supports the continuous upgrading of sensing equipment as the level of roadside digitization improves, demonstrating strong sustainable development value. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall technical solution architecture of the intelligent high-speed expandable gantry system with integrated computer room column foundation proposed in this invention. Figure 2 This is a schematic diagram of the core principle framework of the integrated coupling structure of the computer room, columns and foundation in this invention; Figure 3 This is a flowchart illustrating the axial splicing and span expansion logic of the modular extended beam unit in this invention. Figure 4 This is a schematic diagram of the multi-level interaction relationship and data flow of the intelligent operation and maintenance unit of the system in this invention; Figure 5 This is a schematic diagram of the core principle framework of the coordinated heat dissipation between the environmental control room and the column cavity in this invention; Detailed Implementation Please refer to the appendix. Figure 1 To be continued Figure 5 This invention provides a detailed description of the specific structure, working principle, and implementation details of an intelligent high-speed expandable gantry system integrating a computer room column foundation.

[0021] As a core component of this invention, the integral reinforced concrete foundation unit undertakes the crucial tasks of providing stable physical support, balanced load distribution, and controlling uneven settlement for the entire extended gantry system.

[0022] For the intelligent high-speed expandable gantry system with integrated column foundation for the computer room, it includes: an integral reinforced concrete foundation unit, which provides unified stress support and settlement control for the entire system. The integral reinforced concrete foundation unit consists of a column load-bearing area and a computer room support area. The column load-bearing area and the computer room support area form an integrated connection structure through the internally continuously arranged longitudinal reinforcing bars and transversely distributed reinforcing bars. The multi-functional integrated column unit is vertically fixed to the column load-bearing area of ​​the integral reinforced concrete foundation unit. The multi-functional integrated column unit adopts a hollow cavity structure, which is equipped with a high-voltage transmission channel, a low-voltage signal channel and a vertical ventilation duct. The bottom outer wall of the multi-functional integrated column unit is rigidly connected to the computer room structure. The embedded environmental control room unit is located in the room support area of ​​the integral reinforced concrete foundation unit. One side wall of the embedded environmental control room unit is co-constructed with the lower pipe wall of the multi-functional integrated column unit to form a cabinet storage space, power distribution management space and heat exchange space. The modular extended beam unit spans horizontally above the highway surface and is connected to the top of the multifunctional integrated column unit via a high-strength flange assembly. The modular extended beam unit consists of a main beam segment and at least one extended beam segment. The main beam segment and the extended beam segment are axially spliced ​​together by an inner sleeve connection structure and a high-strength bolt group. The intelligent operation and maintenance unit is integrated into the embedded environmental control room unit and extends to the modular extended beam unit. It is used to monitor the structural health status, environmental parameters, and the operating status of sensing equipment in real time.

[0023] Please refer to the attached document. Figure 1 With appendix Figure 2 In terms of the specific implementation of the integral reinforced concrete foundation unit, this invention adopts a highly integrated continuous structural design. This foundation unit combines the traditional gantry column foundation and the roadside machine room foundation into one unified load-bearing unit. The thickness of the foundation unit is not a fixed value, but is selected between 1.5 meters and 2.5 meters according to the complexity of the geological conditions of the road section. This thickness range can effectively resist the vibration waves generated by high-speed vehicles and the overturning moment caused by lateral wind forces.

[0024] The planar projection length and width of the basic unit are not statically set during the design phase, but are dynamically determined through a nonlinear mapping calculation model. The specific form of this model is as follows: in: The length of the base plane projection is in meters. The width of the base plane projection is in meters. This represents the characteristic value of the foundation bearing capacity of the road section, expressed in kilopascals (kPa). This refers to the depth of the groundwater level, in meters. The internal friction angle of the soil is expressed in degrees. For reference, the characteristic value of foundation bearing capacity is taken as 100 kPa; The baseline coefficients for the basic length and width are 12.0 and 8.0 respectively, in meters; The groundwater level influence coefficients are taken as 0.15 and 0.12 respectively, with units per meter; It is the passive earth pressure coefficient, used to characterize the influence of the soil internal friction angle on the foundation dimensions.

[0025] This model allows for the dynamic determination of the foundation's planar dimensions by combining the geological bearing capacity characteristics, groundwater depth, and soil internal friction angle of the road section, ensuring that the cumulative settlement of the foundation is controlled within the allowable engineering range of less than 5 millimeters during long-term operation.

[0026] At the internal structural level, the monolithic reinforced concrete foundation unit consists of two functional zones: the column load-bearing zone and the machine room support zone. These two zones are arranged continuously in space and form a rigid monolithic structure through an internal crisscrossing steel mesh.

[0027] The load-bearing area of ​​the column is densely equipped with a load-bearing cage frame. This frame is made of HRB400 grade threaded steel with a diameter of 28 mm and its torsional and shear resistance is enhanced by multiple layers of reinforced stirrups. The top of the load-bearing cage frame is reliably connected to the superstructure through 16 to 24 pre-embedded 8.8 or 10.9 grade high-strength anchor bolts.

[0028] To optimize stress transfer, the foundation thickness of the computer room support area is designed to be slightly less than that of the column load-bearing area. A rigid transition slope with an inclination angle of 45 degrees is installed at the junction of the two areas. This transition slope is used to eliminate stress concentration that may occur due to abrupt changes in cross-section, thereby effectively protecting the precision equipment inside the computer room from structural deformation in the event of geological disturbance.

[0029] In the concrete pouring process, high-performance concrete with a strength grade of no less than C35 is used, and the slump is strictly controlled between 160 mm and 200 mm. Through a one-time integral pouring process, the foundation unit is ensured to have good homogeneity and integrity.

[0030] In summary, this monolithic reinforced concrete foundation unit, through continuous structural design, zoned stress optimization, dynamic determination of key parameters, and integral casting, fundamentally solves the structural misalignment problem caused by uneven settlement in traditional split foundation structures, providing a reliable physical support foundation for the stable installation of subsequent multifunctional integrated column units and embedded environmental control room units.

[0031] Closely connected to the monolithic reinforced concrete foundation unit is the multifunctional integrated column unit, which is vertically fixed to the column's load-bearing area. Please refer to the appendix. Figure 2 The column unit uses Q355B grade high-strength structural steel plate as the main material. It is rolled into shape by a large-tonnage plate rolling machine and then automatically arc welded. The cross-sectional shape is preferably octagonal or circular to ensure the most uniform stress distribution, and the wall thickness is strictly controlled to be above 16 mm. This structural design not only improves the bending modulus but also provides ample internal cavity space.

[0032] The core feature of the multi-functional integrated column unit lies in its multi-dimensional functional integration. Its interior is meticulously divided into high-voltage transmission channels, low-voltage signal channels, and vertical ventilation ducts. To prevent electromagnetic radiation from high-current power transmission from interfering with weak, high-speed signals, a 5mm thick cold-rolled silicon steel sheet electromagnetic shielding partition is installed between the high-voltage transmission channels and the low-voltage signal channels. This partition is fixed to the inner wall of the column using a continuous full-welding process. Testing showed that in an electromagnetic environment with a frequency range of 30 MHz to 1000 MHz, the shielding effectiveness of this structure is no less than 80 dB. The testing method was performed in accordance with the relevant requirements of GB / T 12190-2021, "Measurement Method for Shielding Effectiveness of Electromagnetic Shielding Rooms".

[0033] Regarding the construction of the column base, its outer wall is rigidly connected to the computer room structure at the physical level. This co-construction design makes the column not only a load-bearing component but also serve as the structural skeleton of the computer room. A high-precision triaxial accelerometer is installed at the base of the column as the underlying sensing element of the system's intelligent operation and maintenance unit, used to capture the dynamic response characteristics of the column under wind load and traffic flow vibration in real time.

[0034] The vertical ventilation ducts inside the columns utilize the chimney effect to achieve natural convection cooling. Please refer to the attached document. Figure 5 The column has an electrically adjustable airflow regulating valve at its base and an exhaust cap and controlled fan at its top. When heat accumulates inside the embedded environmental control unit, the system automatically opens the regulating valve according to preset temperature control logic.

[0035] The specific execution method of this temperature control logic is as follows: A temperature sensor is installed inside the computer room to collect the temperature value in real time. The system is set with a start-up temperature threshold and a hysteresis temperature value, where the start-up temperature threshold is set to 35 degrees Celsius and the hysteresis temperature value is set to 3 degrees Celsius. When the temperature inside the computer room remains above 35 degrees Celsius for more than 30 seconds, the system determines that a heat accumulation state has occurred and automatically opens the airflow regulating valve at the bottom of the column. The valve opening is linearly adjusted according to the difference between the temperature inside the computer room and the start-up threshold, with the opening range controlled between 0% and 100%, and the opening increases as the temperature rises. At this time, the hot air inside the computer room rises through the vertical ventilation duct and is exhausted from the top exhaust cap under the chimney effect. If the exhaust volume formed by natural convection is insufficient to suppress the temperature rise, when the temperature inside the computer room further rises to above 40 degrees Celsius, the system automatically starts the controlled fan at the top for forced exhaust. The fan speed is linearly adjusted between 500 and 2000 revolutions per minute according to the temperature difference. The temperature difference is calculated as the difference between the current computer room temperature and the 35-degree Celsius start-up threshold. When the temperature reaches 40 degrees Celsius, the difference is 5 degrees Celsius, corresponding to a fan speed of 2000 revolutions per minute. When the temperature is between 35 and 40 degrees Celsius, the fan remains in standby mode and does not start. When the temperature in the computer room drops below 32 degrees Celsius and remains below that for 30 seconds, the system gradually shuts down the airflow regulating valve and the controlled fan, returning to standby mode.

[0036] Through the above temperature control logic, the pressure difference generated by the temperature difference drives the hot air to be discharged upward along the column cavity, thereby significantly reducing the energy consumption of the air conditioning system in the computer room.

[0037] In summary, the multifunctional integrated column unit ensures structural load-bearing capacity through high-strength materials and optimized cross-sectional design, achieves safe isolation between strong and weak currents through internal channel division and electromagnetic shielding, realizes structural coordination and status awareness through rigid bottom connections and sensor configuration, and constructs an efficient passive heat dissipation system through vertical ventilation ducts and refined temperature control logic. This column unit achieves a high degree of integration in structure, function, and operation and maintenance, providing a stable structural platform and physical channel for the reliable connection of subsequent modular expandable beam units and data acquisition by the system's intelligent operation and maintenance unit.

[0038] The embedded environmental control room unit is located in the support area of ​​the integrated reinforced concrete foundation unit. The design of this room abandons the traditional containerized or simple rack-style layout, instead adopting an embedded structure deeply integrated with the columns. One side wall of the room directly utilizes the lower pipe wall of the multi-functional integrated column unit to form a natural structural support, and this interface divides the space for rack storage, power distribution management, and heat exchange.

[0039] The exterior walls of the server room are constructed with double-layer composite metal sandwich panels, with a 100mm thick layer of fire-resistant rock wool filling the middle layer. This material has a fire resistance rating of no less than 2 hours and also provides excellent thermal insulation and noise reduction. Inside the server room, the floor is raised 300mm via an anti-static raised floor. The space below serves as a precision cabling layer, where various power cables and optical fibers are arranged in an orderly manner without crossing each other.

[0040] To ensure the operation of core computing equipment within the data center, the data center is equipped with a precision air conditioning system and an emergency ventilation system. Please refer to the attached document. Figure 5 The condenser assembly of the precision air conditioning system is integrated and installed in the leeward shaded area of ​​the multi-functional integrated column unit, using the column itself as a sunshade to improve heat exchange efficiency. The refrigerant circulation pipe passes through the column wall and connects to the evaporator in the machine room.

[0041] The emergency ventilation system shares the same channel with the vertical ventilation ducts inside the column. It consists of an electrically adjustable airflow regulating valve at the bottom of the column, an exhaust cap and a controlled fan at the top of the column, and a backup power supply independent of the precision air conditioner. When the precision air conditioner fails or the mains power is interrupted, the system automatically switches to emergency ventilation mode. The airflow regulating valve opens to its maximum opening, and the controlled fan starts powered by the backup power supply, forcibly expelling hot air from the computer room to ensure that the core equipment still has basic heat dissipation capabilities in an emergency.

[0042] The computer room is equipped with an automatic cooling mode switching control system, the switching logic of which is as follows: Temperature sensors are installed both inside the computer room and outside the columns to collect the indoor temperature and outdoor ambient temperature, respectively. The system is set with a high-temperature forced cooling threshold and a natural cooling activation temperature range.

[0043] When the outdoor ambient temperature exceeds 35 degrees Celsius, the system identifies this as an extreme high-temperature condition and forcibly activates the precision air conditioning system for active cooling, while closing the airflow regulating valves and controlled fans in the column ventilation ducts. When the outdoor ambient temperature remains below 25 degrees Celsius for more than 5 minutes, the system prioritizes switching to natural convection cooling mode. In this case, the precision air conditioning system is shut down, and the airflow regulating valves at the bottom of the columns are opened, utilizing the chimney effect to expel heat from the computer room through the vertical ventilation ducts.

[0044] If the temperature inside the computer room remains above 30 degrees Celsius, the controlled fans at the top of the columns will be activated for auxiliary ventilation. The fan speed will be linearly adjusted between 500 and 2000 revolutions per minute based on the difference between the temperature inside the computer room and 30 degrees Celsius. When the outdoor ambient temperature is between 25 and 35 degrees Celsius, the system will dynamically select the heat dissipation method based on the actual temperature inside the computer room.

[0045] If the temperature inside the server room is below 28 degrees Celsius, natural convection cooling will be prioritized; if the temperature inside the server room reaches 28 degrees Celsius or higher and continues to rise, the air conditioning system will be activated for supplemental cooling. All temperature sampling periods will not exceed 30 seconds, and control commands will be uniformly issued by the edge computing center within the system's intelligent operation and maintenance unit.

[0046] The computer room door is equipped with a three-point anti-theft alarm lock and a dual-authentication access control system using facial recognition and contactless RFID cards to ensure operational security. Additionally, monocrystalline silicon solar photovoltaic modules are installed on the ceiling of the computer room. The generated electricity is stored in a battery bank via an intelligent charge / discharge controller, serving as auxiliary backup power for the monitoring system.

[0047] In summary, the embedded environmental control room unit achieves highly efficient space utilization through its co-construction design with the multi-functional integrated column unit; it ensures a basic operating environment for the room through composite walls and anti-static flooring; it constructs a temperature control system adaptable to different environmental conditions through integrated installation of the condenser on the leeward side and automatic switching control of the heat dissipation mode; it enhances the system's disaster recovery capability and operational reliability through emergency ventilation system and auxiliary power supply configuration; and it ensures operational safety through multiple access control and security systems. This room unit provides a stable and controllable physical operating environment for the system's intelligent operation and maintenance unit and mounted sensing equipment, and is a crucial support for the long-term unattended and stable operation of the entire system.

[0048] Modular extended crossbeam units are arranged across the highway surface. Please refer to the appendix. Figure 1 and attached Figure 3 The top of the beam unit is connected to the multi-functional integrated column unit via a multi-directional adjustable high-strength flange assembly, and a flexible sealing gasket is provided between the flange faces to prevent rainwater from seeping into the column cavity.

[0049] The crossbeam unit consists of one main beam segment and at least one extension beam segment. This modular design allows the gantry to be flexibly extended or retracted to meet lane widening requirements. The main beam segment is typically between 12 and 18 meters in length, covering standard 3 or 4 lanes, while the extension beam segments are available in 3-meter or 6-meter increments.

[0050] The splicing between the main beam segment and the extended beam segment adopts a high-precision inner sleeve connection structure, with tolerances strictly controlled within 0.5 mm, and is circumferentially fastened with no less than 24 grade 10.9 friction-type high-strength bolts. An additional anti-slip safety chain is also installed at the splicing location, with both ends of the safety chain reliably connected to the beam body via welded reinforcing ribs, forming a double safety protection system.

[0051] The upper surface of the beam unit is pre-installed with a standardized sliding rail mounting interface, which supports stepless adjustment along the beam axis, allowing maintenance personnel to quickly adjust the installation positions of RFID antennas, high-definition surveillance cameras, LiDAR, and millimeter-wave radar without altering the main structure. The internal space of the beam serves not only as a cable channel but also includes a distributed power distribution unit and fiber optic splice box, supporting plug-and-play functionality and remote controlled power-off restart of mounted equipment.

[0052] To address the deflection problem caused by large spans, this invention employs a nonlinear finite element analysis method for full-condition verification. The specific verification process is as follows: A finite element model of the beam element was established. The main beam segment and the extended beam segment were simulated using beam elements. The inner sleeve connection position was set as a rigid connection area, and the high-strength bolt connection was simplified to spring constraint. Its stiffness was determined based on the preload and friction coefficient of the 10.9 grade friction-type high-strength bolt. The load case combination was determined according to the "Code for Wind-Resistant Design of Highway Bridges" JTG / T3360-01 and the "Load Code for Building Structures" GB 50009, including the structural self-weight, permanent load, variable load, and wind load. The wind load was taken as a super strong gust of level 12 or above, the basic wind speed was calculated as 42 m / s, the wind pressure height variation coefficient was taken as the ground roughness class B, and the wind load shape coefficient was taken as 1.3 for rectangular sections. The load combination method was 1.2 times the self-weight and permanent load plus 1.4 times the wind load, combined according to the most unfavorable working condition.

[0053] In the finite element analysis, after applying the above load combination, the vertical displacement values ​​of the mid-span nodes of the beam and the horizontal displacement values ​​of the column tops are extracted. The verification target is: under the action of super gusts of wind above level 12, the vertical deflection of the mid-span of the beam does not exceed 1 / 200 of the span, and the horizontal displacement of the column tops does not exceed 1 / 100 of the total height of the column. If the displacement index exceeds the limit under a certain working condition, optimization is carried out by adjusting the cross-sectional dimensions and wall thickness of the main beam segment and the extended beam segment, or by adding stiffening ribs, until all working conditions meet the above deformation limit requirements.

[0054] The above-mentioned nonlinear finite element analysis method is used to perform full-condition verification to ensure the structural safety and reliability of the beam unit under extreme wind load conditions.

[0055] In summary, the modular extended beam unit achieves a reliable interface connection with the multifunctional integrated column unit via a flange connection at the top; the modular splicing design of the main beam segment and the extended beam segment enables flexible adaptation to changes in the number of lanes; a multi-layered safety protection system is constructed through inner sleeve connections, high-strength bolts, and anti-slip safety chains; flexible deployment and convenient operation and maintenance of sensing equipment are achieved through a sliding rail mounting interface and internally reserved power distribution and communication units; and the safety performance of the large-span structure under extreme environments is ensured through nonlinear finite element full-condition verification. This beam unit provides a stable, scalable, and easy-to-maintain aerial mounting platform for various sensing devices on smart highways.

[0056] As the system's central nervous system, the intelligent operation and maintenance unit is responsible for full-cycle state perception and decision-making control. Please refer to the appendix. Figure 4 This unit includes a structural state perception subsystem, an environmental monitoring subsystem, and an edge computing center.

[0057] The structural state sensing subsystem constructs a complete database of structural dynamic parameters through accelerometers distributed at the base of the columns, static strain gauges in the span of the beams, and tilt sensors at the flange connections. The accelerometers are used to collect the vibration response of the columns under wind loads and traffic flow vibrations, the static strain gauges are used to monitor the strain changes of the beams under loads, and the tilt sensors are used to detect the relative rotation angle at the flange connections.

[0058] The environmental monitoring subsystem monitors external conditions such as temperature, air pressure, rainfall, and visibility in real time through temperature and humidity sensors, smoke detectors, water immersion sensors, and a miniature weather station on the top of the column in the computer room, providing data support for switching heat dissipation modes and assessing the equipment operating environment.

[0059] The edge computing center adopts a dual-machine hot standby architecture, interconnects with various subsystems through a 10-gigabit high-speed fiber optic link, and supports the 5G mobile communication protocol to achieve low-latency interaction with the cloud management platform and traffic participants.

[0060] In this embodiment, the structural damage identification algorithm used by the system's intelligent operation and maintenance unit has extremely high sensitivity. Its execution logic is as follows: First, the system acquires the dynamic response time history curves of the gantry under random environmental excitation through channels with a sampling frequency of not less than 100 Hz. Random environmental excitation includes natural wind load, vibration caused by vehicle traffic, and structural response caused by temperature changes, without the need for additional excitation sources.

[0061] Subsequently, the acquired time-domain data was converted into frequency-domain power spectral density using a Fast Fourier Transform, from which the first three natural frequencies of the system were accurately extracted. In the initial stage before the system was installed and put into operation, steady-state environmental excitation data was continuously collected for no less than 10 minutes, and the initial natural frequency value was calculated using the above method. This value was stored as the reference frequency f0 in the non-volatile memory of the edge computing center and marked as the initial installation reference of the system.

[0062] Next, the algorithm compares the real-time frequency with the reference frequency at the time of initial system installation and calculates the rate of frequency change: in: The rate of change of frequency is expressed as a percentage. The dominant frequency value among the first three natural frequencies extracted at the current moment, in Hz; This is the reference frequency at the initial system installation, in Hz.

[0063] If the frequency change rate exceeds 5%, the system automatically issues a Level 1 structural health warning, indicating a possible loose connection. If the change rate exceeds 10% and the absolute value of the deflection angle reported by the tilt sensor exceeds 0.5 degrees, a Level 2 warning is triggered, and the system automatically notifies the nearest maintenance team via wireless module to conduct an on-site inspection. If the change rate exceeds 15% and the strain count value exceeds the material's elastic limit threshold, the system determines it to be in a critical state of structural damage, triggering a Level 3 warning and linking with the traffic management system to close the affected lanes.

[0064] The elastic limit threshold is determined based on the material properties of Q355B grade steel used in the beams and columns. Its standard yield strength is 355 MPa, and the elastic limit threshold is taken as 90% of the yield strength, i.e., 320 MPa. The measured strain value from the static strain gauge is multiplied by the steel's elastic modulus of 206 GPa to convert it into a stress value, which is then compared with this threshold.

[0065] Through the aforementioned graded early warning mechanism, the system's intelligent operation and maintenance unit has achieved real-time monitoring and graded response to the health status of the gantry structure, providing technical support for the safe operation and proactive maintenance of the intelligent high-speed gantry system.

[0066] In summary, the intelligent operation and maintenance unit of the system constructs a complete structural and environmental perception network through the deployment of multiple types of sensors; achieves highly reliable data processing and low-latency communication through a dual-machine hot-standby edge computing center; and establishes a quantitative assessment and proactive response mechanism for structural health status through a damage identification algorithm based on inherent frequency changes and hierarchical early warning logic. This unit enables the gantry system to possess self-sensing, proactive early warning, and remote interaction capabilities, and is a key technological link supporting unmanned operation and maintenance and full lifecycle management of intelligent highways.

[0067] In addition, this embodiment adopts a standardized isolation layout for the wiring process of high-voltage transmission channels and low-voltage signal channels.

[0068] After the high-voltage cables emerge from the pre-buried conduits at the bottom of the foundation, they rise orderly along the pre-installed support brackets on the inner wall of the column. These support brackets, made of hot-dip galvanized steel, are installed every 800 mm to ensure even stress distribution on the cables during vertical laying and to prevent direct friction with the inner wall of the column. Once the cables enter the power distribution management space of the equipment room, they are branched in a dedicated distribution cabinet, and overvoltage protection devices, including surge protectors and overcurrent circuit breakers, are configured for each circuit to ensure the safe operation of the power system.

[0069] The low-voltage fiber optic cable is introduced directly into the edge computing center from a separate channel on the other side of the pillar. This channel is completely isolated from the high-voltage channel by an electromagnetic shielding partition, ensuring that signal transmission is not subject to electromagnetic interference. After entering the computer room, the fiber optic cable is directly connected to the fiber optic distribution frame in the edge computing center, and after fusion splicing, it is connected to the core switch.

[0070] All cables are rigidly secured inside the support column using stainless steel self-locking cable ties at 500mm intervals. Rubber pads are installed at the cable tie fixing points to prevent direct contact and abrasion between the ties and the cable sheath. This rigid securing method effectively eliminates the risk of cable fatigue breakage caused by wind vibration.

[0071] For corrosion protection, the contact surfaces between the columns and the foundation are coated with an anti-corrosion coating with a total thickness of no less than 250 micrometers. The base layer is epoxy zinc-rich paint with a dry film thickness of no less than 80 micrometers, providing cathodic protection; the top layer is aliphatic polyurethane paint with a dry film thickness of no less than 170 micrometers, exhibiting excellent weather resistance and chemical corrosion resistance. Before coating application, the contact surfaces are sandblasted to remove rust, achieving the Sa2.5 standard to ensure coating adhesion.

[0072] A 1-meter-wide drainage slope, constructed from C20 plain concrete and cast on-site, is installed around the base of the columns. The slope inclines outwards at a 5% gradient to ensure rainwater drains quickly away from the column base, preventing water accumulation and erosion at the connection between the foundation and the columns. The joint between the drainage slope and the columns is sealed with polyurethane sealant to further enhance seepage prevention.

[0073] Through the above-mentioned isolation cabling technology and anti-corrosion structural design, this invention effectively solves common reliability problems in long-term operation and maintenance of traditional gantry systems, such as mutual interference between strong and weak power lines, cable fatigue fracture, and corrosion of basic nodes, providing an important guarantee for the long-term stable operation of gantry systems.

[0074] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects.

[0075] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart high-speed expandable gantry system integrating computer room column foundation, characterized in that, include: The monolithic reinforced concrete foundation unit is used to provide unified stress support and settlement control for the entire system. The monolithic reinforced concrete foundation unit consists of a column load-bearing area and a machine room support area. The column load-bearing area and the machine room support area form an integrated whole connection structure through the internally continuously arranged longitudinal stress reinforcement and transverse distribution reinforcement. The multi-functional integrated column unit is vertically fixed to the column load-bearing area of ​​the integral reinforced concrete foundation unit. The multi-functional integrated column unit adopts a hollow cavity structure, which is equipped with a high-voltage transmission channel, a low-voltage signal channel and a vertical ventilation duct. The bottom outer wall of the multi-functional integrated column unit is rigidly connected to the computer room structure. The embedded environmental control room unit is located in the room support area of ​​the integral reinforced concrete foundation unit. One side wall of the embedded environmental control room unit is co-constructed with the lower pipe wall of the multi-functional integrated column unit to form a cabinet storage space, power distribution management space and heat exchange space. Modular extended beam units span horizontally over the highway surface and are connected to the top of the multifunctional integrated column units via high-strength flange assemblies; The intelligent operation and maintenance unit is integrated into the embedded environmental control room unit and extends to the modular extended beam unit. It is used to monitor the structural health status, environmental parameters, and the operating status of sensing equipment in real time.

2. The system according to claim 1, characterized in that, The planar projection length and width of the monolithic reinforced concrete foundation unit are dynamically determined by a nonlinear mapping calculation model. The model is calculated based on the characteristic value of the foundation bearing capacity, the depth of the groundwater level, and the internal friction angle of the soil in the road section, so as to control the cumulative settlement of the foundation to within 5 mm.

3. The system according to claim 1, characterized in that, Inside the multi-functional integrated column unit, a cold-rolled silicon steel sheet electromagnetic shielding partition is installed between the high-voltage transmission channel and the low-voltage signal channel. The electromagnetic shielding partition is fixed to the inner wall of the column through a continuous full welding process to provide a shielding efficiency of no less than 80 dB in an electromagnetic environment of 30 MHz to 1000 MHz.

4. The system according to claim 1, characterized in that, The vertical ventilation ducts of the multi-functional integrated column unit are connected to the heat exchange space of the embedded environmental control room unit, forming a heat dissipation channel; the intelligent operation and maintenance unit of the system is configured as follows: Obtain the temperature value within the embedded environmental control room unit; When the temperature value is higher than the first start-up threshold, the air volume regulating valve at the bottom of the vertical ventilation duct is opened, and the valve opening is linearly adjusted based on the difference between the temperature value and the first start-up threshold. When the temperature value is higher than the second start-up threshold, the controlled fan at the top of the vertical ventilation duct is started, and the fan speed is linearly adjusted based on the difference between the temperature value and the first start-up threshold.

5. The system according to claim 1, characterized in that, The modular extended beam unit consists of a main beam segment and at least one extended beam segment. The main beam segment and the extended beam segment are axially spliced ​​together by an inner sleeve connection structure and a high-strength bolt group. The fit tolerance of the inner sleeve connection structure is controlled within 0.5 mm, and it is circumferentially fastened by no less than 24 grade 10.9 friction type high-strength bolts. Anti-slip safety chains are also set at the splicing position, forming two safety protection systems.

6. The system according to claim 1, characterized in that, The intelligent operation and maintenance unit of the system includes a structural status perception subsystem, an environmental monitoring subsystem, and an edge computing center; The structural state sensing subsystem includes accelerometers distributed at the root of the multifunctional integrated column unit, static strain gauges in the middle of the modular extended beam unit, and tilt sensors at the flange connection. The environmental monitoring subsystem includes temperature and humidity sensors, smoke detectors, water immersion sensors, and a miniature weather station on top of a multi-functional integrated column unit within the embedded environmental control room unit. The edge computing center adopts a dual-machine hot standby architecture, interconnects with various subsystems via fiber optic links, and supports 5G mobile communication protocols.

7. The system according to claim 6, characterized in that, The system's intelligent operation and maintenance unit is also configured to execute structural damage identification algorithms, including: Obtain the dynamic response time history curves of the gantry system under random environmental excitation; The dynamic response time history curve is transformed into the frequency domain power spectral density by fast Fourier transform, and the first three natural frequencies are extracted. The real-time extracted inherent frequency is compared with the reference frequency at the initial system installation, and the frequency change rate is calculated. If the frequency change rate exceeds 5%, it is judged as a Level 1 structural health warning. If the frequency change rate exceeds 10% and the absolute value of the deflection angle fed back by the tilt sensor exceeds 0.5 degrees, a Level 2 warning will be triggered. If the frequency change rate exceeds 15% and the measured stress value of the static strain gauge exceeds the elastic limit threshold, it is determined to be a critical state of structural damage and a level 3 warning is triggered.

8. The system according to claim 1, characterized in that, The exterior walls of the embedded environmental control room unit are made of double-layer composite metal sandwich panels, with the middle layer filled with fireproof rock wool material; the interior of the room is raised by an anti-static raised floor, with the space below serving as a precision wiring layer; the door of the room is equipped with a three-point anti-theft alarm lock and a dual authentication access control system with facial recognition and contactless RFID cards.

9. The system according to claim 1, characterized in that, The bottom perimeter of the multifunctional integrated column unit is equipped with a drainage slope, which is formed by on-site casting of concrete and slopes outward. The contact surface between the multifunctional integrated column unit and the integral reinforced concrete foundation unit is coated with an anti-corrosion coating, which includes an epoxy zinc-rich paint as the base layer and an aliphatic polyurethane paint as the top layer.

10. The system according to claim 1, characterized in that, The upper surface of the modular expandable beam unit is pre-installed with a standardized slide rail mounting interface, which supports stepless adjustment along the beam axis. The modular expandable beam unit has a pre-installed distributed power distribution unit and optical cable splice box, which supports plug-and-play of mounted equipment and remote controlled power failure restart.

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