Bridge foundation pile reinforcing equipment and reinforcing method for bridge maintenance

Abstract

The invention relates to the technical field of bridge construction equipment, in particular to bridge foundation pile reinforcing equipment and a reinforcing method for bridge maintaining.The bridge foundation pile reinforcing equipment comprises a self-adaptive protection part installed on the outer side of a prefabricated pier, the self-adaptive protection part comprises a plurality of splicing protection covers and a self-adaptive shielding mechanism, and the splicing protection covers are spliced with one another; a heat preservation layer is arranged in the wall thickness of the assembly protection cover, a temperature adjusting heating device and a temperature sensor are further installed on the inner wall of the assembly protection cover, and the self-adaptive shielding mechanism comprises a multi-section telescopic shaft, a heat preservation shielding layer, a sealing mechanism and a stable binding mechanism. The application range can be widened, and meanwhile the mounting quality of the bridge pier is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction equipment, and in particular to a bridge foundation pile reinforcement device, and in particular to a reinforcement method for bridge maintenance using the bridge foundation pile reinforcement device. Background Art

[0002] With the development of engineering technology, some parts of the bridge are prefabricated and assembled to shorten the construction period. After the pile foundation is poured, the prefabricated piers and the connecting steel bars on the pedestal are spliced ​​and poured into one piece, or slot-type connections, grouted metal bellows connections, etc. are used to complete the splicing between the two. However, in actual construction, the above connection methods all require pouring at the connecting part. During winter construction, freezing and thawing are prone to occur, affecting the molding quality of the concrete.

[0003] Chinese patent CN115467355B discloses a bridge pile foundation anti-freezing and thawing reinforcement device and method, including: a bracket, a plurality of inclined placement tracks are provided on the top of the bracket, and the bracket is connected to four preset hole positions of the pedestal around the bracket; an adjusting arm, a plurality of the adjusting arms are adjusted along the placement track to form a limit channel for the pier to pass; an alignment device, a plurality of the alignment devices are distributed in the middle of the bracket around the bracket, and are in contact with the surface of the pier, and are used to align the pier and assist in fixing; a protective member, the protective member is spliced ​​in pairs to complete the covering of the pier, and is connected to the bracket; a bridge pile foundation anti-freezing and thawing reinforcement device and method are provided, which can improve the efficiency of the correction of the pier, keep the pier stable after the correction, and reduce the requirements for the natural environment. At the same time, the design of the protective member effectively avoids the occurrence of freezing and thawing, ensures winter construction work, and effectively improves the existing construction environment.

[0004] The protective parts of the above-mentioned device prevent low temperatures through a multi-layer structure (protective layer, insulation layer, support layer, heating layer) to shield and protect the connection between the prefabricated pier and the abutment. However, the fixed size design of the protective parts is difficult to adapt to prefabricated piers of different diameters or shapes, which limits its flexibility in wide application. In bridge engineering, the specifications of piers often vary according to design requirements, which requires that the reinforcement device must be highly adjustable and adaptable. At the same time, the outer wall of the prefabricated pier often has uneven areas due to construction errors or material characteristics. The fixed structure and materials of existing protective parts are often difficult to fit these irregular surfaces tightly, resulting in poor sealing of the connection. In rainy weather, moisture can easily penetrate into the connection, providing conditions for the occurrence of freeze-thaw phenomena. Summary of the invention

[0005] In view of the above problems, a bridge foundation pile reinforcement device and a reinforcement method for bridge maintenance are provided. The application range can be broadened by using an adaptive shielding mechanism and an assembled protective cover, while improving the installation quality of the bridge piers.

[0006] In order to solve the problems of the prior art, the present invention provides a bridge foundation pile reinforcement device, including an adaptive protective part installed on the outside of a prefabricated pier, the adaptive protective part including an assembled protective cover and an adaptive shielding mechanism, the assembled protective cover is provided with multiple and spliced ​​with each other, an insulation layer is provided in the wall thickness of the assembled protective cover, the inner wall of the assembled protective cover is also installed with a temperature control heating device and a temperature sensor, the adaptive shielding mechanism includes a multi-section telescopic shaft, an insulation shielding layer, a sealing mechanism and a stable bundling mechanism, the multi-section telescopic shaft is provided with multiple distributions on the top of the assembled protective cover, the insulation shielding layer is installed at the telescopic end of the multi-section telescopic shaft, the insulation shielding layer is used to shield the outer wall of the prefabricated pier, the sealing mechanism is installed on the outer wall of the assembled protective cover, the sealing mechanism is used to block the splicing of the insulation shielding layer, the stable bundling mechanism is installed at the extension end of the multi-section telescopic shaft, and the stable bundling mechanism is used to bind and fix the insulation shielding layer.

[0007] Preferably, the thermal insulation shielding layer is provided with guide folding marks, a plurality of interlaced rings are installed on the extended end of the thermal insulation shielding layer, and a Velcro sub-surface is provided on the outer splicing area of ​​the thermal insulation shielding layer.

[0008] Preferably, the sealing mechanism comprises a winding rail installed on the side wall of the assembled protective cover, a first winding roller is installed inside the winding rail, and a sealing roll is provided on the first winding roller.

[0009] Preferably, the stable bundling mechanism includes a locking winding box installed on a multi-section telescopic shaft, a material storage chamber and an interlaced rail are provided inside the locking winding box, a second winding roller is provided inside the material storage chamber, a locking belt is installed on the second winding roller, and a positioning locking wheel is installed inside the interlaced rail.

[0010] Preferably, the positioning locking wheel includes an anti-rotation limit shaft installed inside the interlaced rail, a limit gear is installed on the outside of the anti-rotation limit shaft, the inside of the limit gear is covered with first limit grooves, and the outside of the limit gear is covered with limit teeth.

[0011] Preferably, the outer wall of the anti-rotation limit shaft is provided with a plurality of limit slide rails, the interior of the limit slide rails is provided with limit blocks, a pressing adjustment shaft is installed inside the anti-rotation limit shaft, a connecting rod is installed between the pressing adjustment shaft and the limit blocks, and a reset spring is installed between the pressing adjustment shaft and the anti-rotation limit shaft.

[0012] Preferably, a flexible metal strip is provided inside the locking belt, an elastic buffer layer is provided outside the locking belt, and a second limiting groove is provided on the inner wall of the elastic buffer layer.

[0013] Preferably, the stable binding mechanism also includes a pushing mechanism for pushing the locking belt, the pushing mechanism includes a movable bracket installed on the outside of the locking winding box, a threaded adjustment shaft is installed between the movable bracket and the locking winding box, and a pressing roller is installed at the contact end of the movable bracket.

[0014] Preferably, the temperature-adjusting and heating device comprises an annular heating tube installed inside the assembled protective cover, a spiral ventilation rail is provided on the outer side of the annular heating tube, the spiral ventilation rail is covered with inclined flow grooves, and a blower is also installed on the spiral ventilation rail.

[0015] A reinforcement method for bridge maintenance using a bridge foundation pile reinforcement device comprises the following steps:

[0016] S1. After the flood, first conduct a comprehensive assessment of the bridges affected by the flood, pay special attention to the damage to the connection between the piers and the pile foundations, and after confirming the piers that need to be repaired, prepare special reinforcement equipment and materials, including adjusted assembly protective covers.

[0017] S2. Before the maintenance work, use temporary support structures to stabilize the bridge piers to prevent instability caused by reinforcement work. Subsequently, build an assembled protective cover around the connection between the bridge piers and the pile foundation. The assembled protective cover has stronger structural strength and waterproof performance to cope with possible secondary water flow impact. At the same time, ensure that there is enough space inside the assembled protective cover to facilitate subsequent construction operations.

[0018] S3. Precisely assemble multiple special protective covers around the connection between the pier and the pile foundation to ensure full coverage and tight fit. Use a butt sealing layer to strengthen the sealing of the connection to prevent moisture and impurities from entering, creating a dry and stable construction environment for subsequent repair work.

[0019] S4. When assembling the protective cover, the damaged concrete is first cleaned to expose the steel bars and other structures. Then, a repair plan is formulated according to the damage, such as adding steel mesh, using high-strength concrete for pouring, etc. The multi-section telescopic shaft and thermal insulation shielding layer of the adaptive shielding mechanism are used to closely fit and cover the reinforced area, and the stable binding mechanism and sealing mechanism are used to ensure the reinforcement effect and the sealing of the overall structure.

[0020] S5. During the reinforcement process, the intelligent temperature control system in the protective cover is started to adjust the internal environment according to actual needs to ensure that the concrete pouring and curing process is carried out within an appropriate temperature range. At the same time, the temperature sensor is continuously used to monitor the internal temperature and the data is fed back to the control system so that the temperature control and heating device can be adjusted in time to ensure construction quality.

[0021] S6. After the reinforcement work is completed, continue to regularly monitor the connection between the pier and the pile foundation, evaluate the repair effect and record the data. According to the monitoring results, adjust the maintenance strategy in time to ensure the long-term stability and safety of the bridge structure.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The device significantly improves its adaptability to prefabricated bridge piers of different diameters, shapes and irregular surfaces through the design of adaptive shielding mechanism and assembled protective cover. The combination of multi-section telescopic shaft and thermal insulation shielding layer enables the device to be flexibly adjusted to fit closely to the outer wall of the bridge pier, and can achieve effective shielding and protection regardless of smooth or concave and convex areas, greatly broadening the scope of application.

[0024] 2. The built-in insulation layer of the assembled protective cover effectively isolates the low temperature environment outside and ensures the temperature inside the pier is stable. At the same time, the built-in temperature control and heating device works in conjunction with the temperature sensor to achieve intelligent control of the internal environment, ensuring that the pier is always in the most suitable temperature conditions, effectively preventing structural damage or casting quality problems caused by low temperature.

[0025] 3. The device is equipped with docking sealing layers and sealing mechanisms at many key locations, including the splicing area of ​​the assembled protective cover, the bottom, and the splicing of the thermal insulation shielding layer. These designs ensure the tightness of the overall structure, effectively prevent the penetration of external factors such as rainwater and air, reduce the risk of freeze-thaw phenomena, and ensure the long-term safety and stability of the bridge piers. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the installation status of the bridge foundation pile reinforcement equipment.

[0027] Figure 2 A three-dimensional diagram of a bridge pile reinforcement device Figure 1 .

[0028] Figure 3 A three-dimensional diagram of a bridge pile reinforcement device Figure 2 .

[0029] Figure 4 It is a three-dimensional schematic diagram of a partial structure of a bridge foundation pile reinforcement equipment.

[0030] Figure 5 It is a three-dimensional schematic diagram of a thermal insulation shielding layer in a bridge foundation pile reinforcement device.

[0031] Figure 6 It is a three-dimensional schematic diagram of a sealing mechanism in a bridge foundation pile reinforcement device.

[0032] Figure 7 It is a three-dimensional schematic diagram of a stable bundling mechanism in a bridge pile reinforcement device.

[0033] Figure 8 It is an exploded view of a stabilizing binding mechanism in a bridge pile reinforcement device.

[0034] Fig. 9 It is a three-dimensional schematic diagram of a positioning locking wheel in a bridge pile reinforcement device.

[0035] Fig.10 It is a plan cross-sectional view of an anti-rotation limit shaft in a bridge foundation pile reinforcement device.

[0036] Fig.11 It is a three-dimensional schematic diagram of a locking belt in a bridge pile reinforcement device.

[0037] The numbers in the figure are:

[0038] 1. Adaptive shielding mechanism; 11. Multi-section telescopic shaft; 12. Insulation shielding layer; 121. Guide folding mark; 122. Interlaced ring; 123. Velcro sub-surface; 124. Rubber sealing layer; 13. Sealing mechanism; 131. Sealing roll; 1311. Velcro mother surface; 132. Winding rail; 133. First winding roller; 14. Stable bundling mechanism; 141. Locking winding box; 1411. Storage chamber; 1412. Interlaced rail; 142. Second winding roller; 1421. Rotary drive; 143. Positioning locking wheel; 1431. Anti-rotation limit shaft; 1432. Limit slide rail; 1433. Limit block; 143 4. Press the adjustment shaft; 1435. Connecting rod; 1436. Return spring; 1437. Limit gear; 1438. First limit slot; 1439. Limit tooth; 144. Locking belt; 1441. Flexible metal strip; 1442. Elastic buffer layer; 1443. Second limit slot; 145. Push mechanism; 1451. Moveable bracket; 1452. Pressing roller; 1453. Threaded adjustment shaft; 2. Assembled protection cover; 21. Butt sealing layer; 22. Temperature control and heating device; 221. Annular heating pipe; 222. Spiral ventilation rail; 2221. Inclined circulation slot; 223. Air blower; 3. Prefabricated pier; 4. Abutment. DETAILED DESCRIPTION

[0039] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] See also Figures 1 to 11As shown, a bridge foundation pile reinforcement device includes an adaptive protective member installed on the outside of a prefabricated bridge pier 3, the adaptive protective member includes an assembled protective cover 2 and an adaptive shielding mechanism 1, the assembled protective cover 2 is provided with multiple and spliced ​​with each other, a thermal insulation layer is provided in the wall thickness of the assembled protective cover 2, and a temperature regulating heating device 22 and a temperature sensor are also installed on the inner wall of the assembled protective cover 2, the adaptive shielding mechanism 1 includes a multi-section telescopic shaft 11, a thermal insulation shielding layer 12, a sealing mechanism 13 and a stable bundling mechanism 14, the multi-section telescopic shaft 11 is provided with multiple distributions on the top of the assembled protective cover 2, the thermal insulation shielding layer 12 is installed at the telescopic end of the multi-section telescopic shaft 11, the thermal insulation shielding layer 12 is used to shield the outer wall of the prefabricated bridge pier 3, the sealing mechanism 13 is installed on the outer wall of the assembled protective cover 2, the sealing mechanism 13 is used to block the splicing of the thermal insulation shielding layer 12, the stable bundling mechanism 14 is installed at the extension end of the multi-section telescopic shaft 11, and the stable bundling mechanism 14 is used to bind and fix the thermal insulation shielding layer 12.

[0041] The construction personnel first use the auxiliary guiding equipment to accurately install the prefabricated bridge pier 3 to the designated position of the pedestal 4. After completing the foundation connection between the prefabricated bridge pier 3 and the pedestal 4, the pouring operation at the connection is carried out. Considering the impact of cold climate or rainy season on the pouring quality caused by the outside temperature being lower than the allowable construction temperature, the subsequent protection steps need to be carried out quickly and effectively. After the pouring operation is completed, the construction personnel quickly move the two assembled protective covers 2 to the two sides of the prefabricated bridge pier 3 and accurately align them around their axial positions. The design of the assembled protective cover 2 allows them to be spliced ​​together to form a preliminary wrapping of the prefabricated bridge pier 3. The internal insulation layer effectively isolates the low temperature of the outside world. The splicing area and the bottom of the assembled protective cover 2 are both provided with a butt sealing layer 21. The butt sealing layer 21 in the splicing area is mainly used to fill the tiny gaps between the assembled blocks to prevent external factors such as moisture and air from penetrating into the interior and affecting the protective effect of the pier. This layer of sealing is the basis for ensuring the overall integrity and sealing of the assembled protective cover 2. The addition of a docking sealing layer 21 at the bottom of the assembled protective cover 2 is to deal with the bottom water seepage problem that may be caused by uneven ground, soil movement or water level changes. The bottom sealing layer can effectively isolate the erosion of the base of the pier by groundwater or rainwater, and protect the foundation of the pier from damage. The inner wall of the assembled protective cover 2 is also integrated with a thermostatic heating device 22 and a temperature sensor. These intelligent systems can automatically adjust the internal temperature according to the external temperature to ensure that the pier is in a suitable environmental condition. The adaptive shielding mechanism 1 is the core of this design. Its multi-section telescopic shaft 11 is pre-installed on the top of the assembled protective cover 2 in an inclined state to adapt to prefabricated piers 3 of different diameters and shapes. The construction personnel guide the thermal insulation shielding layer 12 to gradually extend toward the outer wall of the prefabricated pier 3 by operating the multi-section telescopic shaft 11. Due to the flexibility of the telescopic shaft and the plasticity of the thermal insulation shielding layer 12, even in the face of the uneven outer wall of the pier, a tight fit can be achieved. When the thermal insulation shielding layer 12 is completely in contact with the outer wall of the pier and reaches the ideal tilted state, the construction workers further arrange the contact surface. Subsequently, the thermal insulation shielding layer 12 is firmly tied and fixed to the prefabricated pier 3 using the stable bundling mechanism 14. This step not only strengthens the stability of the thermal insulation shielding layer 12, but also further improves its sealing with the outer wall of the pier. At the same time, the sealing mechanism 13 is used to seal the joints of the thermal insulation shielding layer 12 to effectively prevent rainwater penetration and freeze-thaw phenomena. After the entire reinforcement equipment is deployed, the temperature sensor will continuously monitor the internal temperature and transmit the data to the control system. If the temperature deviates from the set range, the temperature control heating device 22 will automatically start or adjust the power to maintain suitable environmental conditions. Regularly check the integrity of the assembled protective cover 2, the thermal insulation shielding layer 12 and the stable bundling mechanism 14 to ensure long-term protection. The device realizes efficient and flexible protection of prefabricated piers 3 of different specifications.The close cooperation between the assembled protective cover 2 and the adaptive shielding mechanism 1 not only improves the protection effect, but also ensures good sealing and stability, providing a strong guarantee for the smooth construction and long-term use of bridge projects in cold climates.

[0042] See also Figures 2 to 5 As shown, the thermal insulation shielding layer 12 is provided with a guide folding mark 121, a plurality of interlaced rings 122 are installed on the extended end of the thermal insulation shielding layer 12, and a Velcro surface 123 is provided on the outer splicing area of ​​the thermal insulation shielding layer 12.

[0043] An insulation layer is provided at the thick part of the wall of the insulation shielding layer 12 , a waterproof layer is provided on the outside of the insulation shielding layer 12 , and a rubber sealing layer 124 is provided in the area where the insulation shielding layer 12 and the outer wall of the prefabricated bridge pier 3 are in contact.

[0044] The guide folding marks 121 provided on the thermal insulation shielding layer 12 provide clear folding direction guidance for construction workers during operation. These folds are processed through special processes, so that the thermal insulation shielding layer 12 can be smoothly folded or unfolded along a predetermined trajectory, so that it is easier to fit with the outer wall of the prefabricated pier 3. Under the action of the telescopic shaft, the thermal insulation shielding layer 12 can be gradually unfolded along the folds, covering the outer wall of the pier to achieve a tight wrap. The multiple interlaced rings 122 installed on the extended end of the thermal insulation shielding layer 12 provide a convenient interface for subsequent fixing work. These interlaced rings 122 cooperate with the ropes or belts of the stable binding mechanism 14, and the thermal insulation shielding layer 12 is firmly bound to the prefabricated pier 3 by interlacing, knotting or locking. The design of the interlaced rings 122 makes the binding process faster and easier, and not easy to loosen. The outer splicing area of ​​the thermal insulation shielding layer 12 is provided with a Velcro sub-surface 123, and this design greatly improves the sealing performance of the splicing of the thermal insulation shielding layer 12. When two sections of the thermal insulation shielding layer 12 need to be spliced, it is only necessary to relatively fit the sealing mechanism 13 with the Velcro sub-surface 123 to achieve fast and tight splicing. The adhesive force of the Velcro ensures that the splicing is not easy to seep water or leak air, thereby maintaining the sealing effect of the entire thermal insulation shielding layer 12. A thermal insulation layer is provided at the wall thickness of the thermal insulation shielding layer 12, and the thermal insulation layer is made of high-efficiency thermal insulation material and has excellent thermal insulation performance. It can effectively block the invasion of low temperature outside and keep the temperature of the environment around the bridge pier stable. At the same time, the thermal insulation layer can also reduce the heat exchange between the bridge pier and the external environment, reduce energy consumption, and improve energy utilization efficiency. A waterproof layer is provided on the outside of the thermal insulation shielding layer 12, and the waterproof layer is made of a material with strong weather resistance and good waterproof effect. It can effectively isolate the penetration of external water sources such as rainwater and snow water, and protect the insulation layer and bridge piers from water erosion. The presence of the waterproof layer enables the thermal insulation shielding layer 12 to maintain a good working condition in severe rainy and snowy weather, ensuring the safety and stability of the bridge piers. A rubber sealing layer 124 is also provided in the area where the thermal insulation shielding layer 12 fits the outer wall of the prefabricated bridge pier 3. The rubber sealing layer 124 has good elasticity and sealing properties, and can fit tightly to various uneven places on the outer wall of the pier to form an effective sealing barrier. It can effectively prevent external factors such as moisture and air from penetrating through tiny gaps. The thermal insulation shielding layer 12 has good sealing, thermal insulation and stability in cold climates, providing a strong guarantee for the safe construction and long-term use of bridge projects.

[0045] See also Figures 2 to 6 As shown, the sealing mechanism 13 includes a winding rail 132 installed on the side wall of the assembled protection cover 2, a first winding roller 133 is installed inside the winding rail 132, and a sealing roll 131 is provided on the first winding roller 133.

[0046] The outer wall of the sealing roll 131 is provided with a waterproof layer, and the inner wall of the sealing roll 131 is provided with a Velcro female surface 1311 .

[0047] The winding rail 132 is used to support and fix the winding roller. The position and angle of the winding rail 132 are precisely calculated to ensure that the sealing roll 131 can be smoothly unfolded and cover the area that needs to be sealed. The first winding roller 133 is installed inside the winding rail 132, which is the main storage and unfolding device of the sealing roll 131. The first winding roller 133 can rotate smoothly to control the retraction and release of the sealing roll 131. When sealing is required, the first winding roller 133 rotates counterclockwise for unfolding and use, and when the sealing roll 131 needs to be rolled up, it rotates clockwise. The outer wall of the sealing roll 131 is provided with a waterproof layer, which is made of high-performance waterproof material and can effectively isolate the penetration of external water sources such as moisture, rainwater and snow water. The presence of the waterproof layer ensures the waterproof performance of the sealing roll 131 under severe weather conditions and ensures the dryness and stability of the interior of the assembled protective cover 2. The inner wall of the sealing roll 131 is provided with a Velcro mother surface 1311, which is a material with strong adhesion and can be tightly fitted with the Velcro sub-surface 123 on the outer side of the thermal insulation shielding layer 12. Through the cooperation of the Velcro mother-and-sub-surface, the sealing roll 131 can be quickly and firmly attached to the splicing of the thermal insulation shielding layer 12 or the assembled protective cover 2 to achieve seamless sealing.

[0048] When it is necessary to seal the gap between the assembled protective cover 2 and the thermal insulation shielding layer 12, the construction personnel first operate the first winding roller 133 to rotate it counterclockwise to release the sealing roll 131. The sealing roll 131 is gradually unfolded along the winding rail 132 to cover the area that needs to be sealed. During the unfolding process of the sealing roll 131, the construction personnel fit the Velcro mother surface 1311 on the inner wall of the sealing roll 131 relatively with the Velcro sub-surface 123 on the assembled protective cover 2. By pressing gently, ensure that the two are tightly adhered together to form an effective sealing barrier. After the sealing is completed, the construction personnel need to carefully check whether the sealing roll 131 completely covers the gap and confirm whether the adhesion is firm. If necessary, appropriate adjustments can be made to ensure that the sealing effect is optimal. The sealing performance of the equipment is improved, and the sealing operation process is simplified, providing reliable guarantee for the safe construction and long-term use of bridge projects.

[0049] See also Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the stable bundling mechanism 14 includes a locking winding box 141 installed on the multi-section telescopic shaft 11, the interior of the locking winding box 141 is provided with a storage chamber 1411 and an interlaced rail 1412, the interior of the storage chamber 1411 is provided with a second winding roller 142, the second winding roller 142 is installed with a locking belt 144, and the interior of the interlaced rail 1412 is installed with a positioning locking wheel 143.

[0050] The stable binding mechanism 14 further includes a rotary driver 1421 for driving the second winding drum 142 to rotate and wind.

[0051] First, the core component of the stable bundling mechanism 14 includes a locking winding box 141 installed on a multi-section telescopic shaft 11, so that the bundling mechanism can be flexibly adjusted according to the specific size and shape of the bridge piles, and adapt to different reinforcement requirements through the extension and contraction of the telescopic shaft. Inside the locking winding box 141, two key areas are provided, namely a storage chamber 1411 and an interlaced rail 1412. The storage chamber 1411 is the main space for storing the locking belt 144, which is an important material for tightening and stabilizing the piles during the reinforcement process. A second winding drum 142 is installed in the storage chamber 1411, and the locking belt 144 is wound around it for orderly retraction and release. When pile reinforcement is required, the rotary driver 1421 starts to work and drives the second winding drum 142 to rotate. The rotary driver 1421 serves as a power source, providing the necessary torque to rotate the second winding drum 142 in a preset direction, thereby driving the locking belt 144 to be drawn out or recovered from the storage chamber 1411. This retracting and releasing mechanism ensures that the locking belt 144 can accurately and quickly reach the position that needs to be reinforced. At the same time, a positioning locking wheel 143 is installed inside the interlaced rail 1412. The function of the positioning locking wheel 143 is to position and lock the locking belt 144 through its structural characteristics after the locking belt 144 is drawn out and bypasses the foundation pile, so as to ensure that the locking belt 144 can be firmly fixed on the foundation pile to achieve the purpose of reinforcement.

[0052] When the thermal insulation shielding layer 12 needs to be installed, the operator will start the rotary drive 1421 to rotate the second winding drum 142 and release the locking belt 144. The locking belt 144 is guided through multiple interlaced rings 122 until the other end reaches the other side of the thermal insulation shielding layer 12. In this process, the locking belt 144 may need to be manually or automatically passed through each interlaced ring 122 until the entire path is completed. Once the locking belt 144 passes through all the interlaced rings 122 and reaches the other end of the thermal insulation shielding layer 12, the operator will further tighten the locking belt 144 to ensure that it forms a tight fit between the prefabricated bridge pier 3 and the thermal insulation shielding layer 12. At this time, the positioning locking wheel 143 in the interlaced rail 1412 can play a role in fixing the locking belt 144 in the correct position to prevent it from loosening or falling off. After the locking belt 144 is fully tightened and fixed, the thermal insulation shielding layer 12 is firmly connected to the prefabricated bridge pier 3. At this time, the entire reinforced structure not only provides additional support and stability, but the tightly fitting thermal insulation shielding layer 12 effectively protects the foundation piles from the influence of the external environment.

[0053] See also Figure 7 and Figure 8As shown, the positioning locking wheel 143 includes an anti-rotation limit shaft 1431 installed inside the interlaced rail 1412, and a limit gear 1437 is installed on the outer side of the anti-rotation limit shaft 1431. The interior of the limit gear 1437 is covered with first limit grooves 1438, and the outer side of the limit gear 1437 is covered with limit teeth 1439.

[0054] The anti-rotation limit shaft 1431 is engaged with the first limit slot 1438 , and the anti-rotation limit shaft 1431 is used to limit the rotation direction of the limit gear 1437 so that the limit gear 1437 can only rotate in one direction.

[0055] The anti-rotation limit shaft 1431 is not only the installation base of the limit gear 1437, but also limits the rotation direction of the limit gear 1437 through its special design. Specifically, the anti-rotation limit shaft 1431 forms a snap-fit ​​relationship with the first limit slot 1438 inside the limit gear 1437. This snap-fit ​​relationship enables the limit gear 1437 to rotate only in a single direction when subjected to external force, thereby achieving precise control of the rotation direction. Due to the limiting effect of the anti-rotation limit shaft 1431, the limit gear 1437 can only rotate in a predetermined direction when receiving the pulling force or thrust from the locking belt 144. This one-way rotation mechanism ensures the stability and reliability of the locking process, and avoids locking failure or loosening due to accidental rotation of the limit gear 1437. When the locking belt 144 is guided through the interlaced ring 122 and tightened, the locking belt 144 will enter the interlaced rail 1412. When the locking belt 144 enters the interlaced rail 1412, it will contact the limiting tooth 1439 of the limiting gear 1437, causing the limiting gear 1437 to rotate in one direction. At the same time, since the limiting gear 1437 can only rotate in one direction, once the locking belt 144 enters the interlaced rail 1412 and is locked, it is not easy to loosen or fall off due to external force. The positioning locking wheel 143 realizes the precise locking and positioning of the locking belt 144 through the clamping relationship between the anti-rotation limiting shaft 1431 and the limiting gear 1437 and the unidirectional rotation mechanism of the limiting gear 1437, thereby ensuring the stability and reliability of the bridge foundation pile reinforcement equipment.

[0056] See also Figure 8 , Fig. 9 and Fig.10 As shown, the outer wall of the anti-rotation limit shaft 1431 is provided with a plurality of limit slide rails 1432, the interior of the limit slide rails 1432 is provided with a limit block 1433, the interior of the anti-rotation limit shaft 1431 is installed with a press-adjustment shaft 1434, a connecting rod 1435 is installed between the press-adjustment shaft 1434 and the limit block 1433, and a return spring 1436 is installed between the press-adjustment shaft 1434 and the anti-rotation limit shaft 1431.

[0057] In the normal locking state, the plurality of limiting slide rails 1432 outside the anti-rotation limiting shaft 1431 are provided with limiting blocks 1433 inside, and these limiting blocks 1433 are connected to the pressing adjustment shaft 1434 through the connecting rod 1435, and are kept in an outwardly expanded state by the reset spring 1436. When the limiting gear 1437 is installed on the anti-rotation limiting shaft 1431, the limiting blocks 1433 will accurately snap into the first limiting slot 1438 inside the limiting gear 1437. This snap-fit ​​relationship ensures that the limiting gear 1437 can only rotate in the counterclockwise direction, but cannot rotate clockwise. When the locking belt 144 is guided through the interlaced rail 1412 and tightened, it will contact the limiting teeth 1439 of the limiting gear 1437, pushing the limiting gear 1437 to rotate counterclockwise. Since the limiting gear 1437 is limited to one-way rotation by the limiting block 1433 , the locking belt 144 can be firmly fixed in the insertion rail 1412 and is not easily loosened or dropped off due to external force.

[0058] When the locking belt 144 needs to be released, the operator presses down the adjustment shaft 1434. This action drives the limit block 1433 to shrink inward synchronously through the connecting rod 1435, and the reset spring 1436 is compressed to store energy. As the limit block 1433 shrinks, the engagement relationship between them and the first limit slot 1438 of the limit gear 1437 is released, so that the limit gear 1437 loses the restriction of counterclockwise rotation. Once the limit block 1433 is disengaged from the first limit slot 1438, the limit gear 1437 can rotate clockwise. At this time, the operator can easily pull the locking belt 144 out of the interlaced rail 1412 to achieve the release of the locking belt 144. After the locking belt 144 is released, the operator releases the pressing adjustment shaft 1434, and the reset spring 1436 releases the stored energy, pushing the pressing adjustment shaft 1434 and the limit block 1433 back to the initial position, ready for the next locking operation. The locking belt 144 is precisely controlled and quickly unlocked, which not only improves the efficiency of the reinforcement operation, but also ensures the stability and reliability of the reinforcement structure.

[0059] See also Figure 7 and Fig.11 As shown, a flexible metal strip 1441 is provided inside the locking belt 144 , an elastic buffer layer 1442 is provided outside the locking belt 144 , and a second limiting groove 1443 is provided on the inner wall of the elastic buffer layer 1442 .

[0060] The flexible metal strip 1441 embedded inside the locking band 144 provides it with strong structural support. The flexible metal strip 1441 has high tensile strength and bending stiffness, and can effectively resist external stress and deformation during the locking process, ensuring the stability and reliability of the locking band 144. Although the flexible metal strip 1441 provides strong support, its "flexible" characteristics also allow it to adapt to the irregular shape or slight deformation of the surface of the pile to a certain extent, thereby ensuring that the locking band 144 can fit tightly to the surface of the pile to achieve a better reinforcement effect. The elastic buffer layer 1442 wrapped around the outside of the locking band 144 is mainly made of elastic material. The elastic buffer layer 1442 can fit tightly to the surface of the pile, fill the tiny bumps or gaps on the surface of the pile, and thus enhance the locking effect. The shape and size of the second limit slot 1443 match the limit tooth 1439 on the outside of the limit gear 1437. When the locking belt 144 is inserted into the inside of the card rail, the second limit slot 1443 will be engaged with the limit tooth 1439 of the limit gear 1437. The second limit slot 1443 and the limit tooth 1439 cooperate to prevent loosening.

[0061] See also Figure 7 and Figure 8 As shown, the stable binding mechanism 14 also includes a pushing mechanism 145 for pushing the locking belt 144. The pushing mechanism 145 includes a movable bracket 1451 installed on the outside of the locking winding box 141. A threaded adjustment shaft 1453 is installed between the movable bracket 1451 and the locking winding box 141. A pressure roller 1452 is installed at the contact end of the movable bracket 1451.

[0062] The pressing roller 1452 is used to push and contact the locking belt 144. After the locking belt 144 is tied and positioned, the pressing roller 1452 can effectively push the locking belt 144 to fit the prefabricated bridge pier 3. Ensure the bundling effect. The threaded adjustment shaft 1453 is connected between the mobile bracket 1451 and the locking reel 141. By rotating the threaded adjustment shaft 1453, the linear movement distance of the mobile bracket 1451 can be accurately controlled. This design not only improves the accuracy of adjustment, but also makes the operation process more convenient. The pressing roller 1452 is installed at the contact end of the mobile bracket 1451 and is a key component of the pushing mechanism 145. The pressing roller 1452 adopts a rolling design to reduce the friction with the locking belt 144, while ensuring that the force can be evenly applied during the pushing process.

[0063] When the locking belt 144 is tied and initially positioned on the prefabricated bridge pier 3 through the locking reel 141 and other mechanisms, the operator drives the mobile bracket 1451 to move linearly along the predetermined direction by rotating the threaded adjustment shaft 1453. As the mobile bracket 1451 moves, the pressing roller 1452 installed at its contact end gradually approaches the locking belt 144. When the pressing roller 1452 contacts the locking belt 144, continuing to rotate the threaded adjustment shaft 1453 will push the pressing roller 1452 to roll along the direction of the locking belt 144, thereby effectively pushing the locking belt 144 to fit the prefabricated bridge pier 3. Since the pressing roller 1452 adopts a rolling design, the pushing process is smooth and uniform, avoiding local deformation or damage of the locking belt 144 due to uneven force.

[0064] By continuously adjusting the threaded adjustment shaft 1453, the pushing force and position of the pressing roller 1452 can be accurately controlled to ensure that the locking belt 144 can fit tightly to various parts of the prefabricated pier 3, thereby achieving the best reinforcement effect.

[0065] See also Figures 2 to 4 As shown, the temperature control heating device 22 includes an annular heating tube 221 installed inside the assembled protective cover 2, and a spiral ventilation rail 222 is provided on the outer side of the annular heating tube 221. The spiral ventilation rail 222 is covered with inclined flow grooves 2221, and a blower 223 is also installed on the spiral ventilation rail 222.

[0066] The assembled protective cover 2 serves as the outer shell of the entire temperature control heating device 22. It can not only protect the internal heating and ventilation components from the influence of the external environment, but also ensure the sealing and safety of the heating process, so that the heat can be concentrated in the reinforcement area. The annular heating pipe 221 is installed in the inner center of the assembled protective cover 2 and is the core component for generating heat. The annular design allows heat to be radiated evenly along the annular path, reducing the temperature gradient and improving the uniformity of heating. The spiral ventilation track 222 is arranged on the outer side of the annular heating tube 221. Its spiral shape not only increases the path length of air circulation, but also allows the air to continuously change direction during the flow process, promoting the effective transfer and distribution of heat. Inclined circulation groove 2221: The spiral ventilation track 222 is covered with inclined circulation grooves, which can guide the air to flow in a specific direction, while increasing the contact area between the air and the wall of the spiral ventilation track 222, and improving the heat exchange efficiency. Installed at the appropriate position of the spiral ventilation track 222, it is responsible for driving the air to circulate in the spiral ventilation track 222. The airflow generated by the blower 223 is accelerated and guided through the inclined flow slots 2221 to form an effective air circulation system.

[0067] When the bridge foundation piles need to be heated and reinforced, the air blower 223 is started first. The airflow generated by the air blower 223 is guided into the spiral ventilation track 222 and flows along the spiral path. At the same time, the annular heating tube 221 starts to work and generates heat. This heat is transferred to the air in the spiral ventilation track 222 through the wall surface of the annular heating tube 221, so that the air temperature gradually increases. The high-temperature air circulates continuously in the spiral ventilation track 222, and is accelerated and guided by the inclined circulation groove 2221, forming a strong convection heat exchange effect. This convection heat exchange enables the heat to be evenly transferred to every corner of the assembled protective cover 2, thereby achieving comprehensive heating of the reinforcement area. During the heating process, the operator can adjust the wind speed of the air blower 223 and the power of the annular heating tube 221 as needed to control the heating temperature and speed to ensure that the reinforcement effect is optimal.

[0068] A reinforcement method for bridge maintenance using a bridge foundation pile reinforcement device comprises the following steps:

[0069] S1. After the flood, first conduct a comprehensive assessment of the bridges affected by the flood, paying special attention to the damage to the connection between the piers and the pile foundations. After confirming the piers that need to be repaired, prepare special reinforcement equipment and materials, including the adjusted assembly protective cover 2.

[0070] S2. Before the maintenance work, use a temporary support structure to stabilize the bridge piers to prevent instability caused by the reinforcement work. Subsequently, build assembled protective covers 2 around the connection between the bridge piers and the pile foundations. These assembled protective covers 2 have stronger structural strength and waterproof performance to cope with possible secondary water flow impacts. At the same time, ensure that the internal space of the assembled protective covers 2 is sufficient to facilitate subsequent construction operations.

[0071] S3. Precisely assemble multiple specially made protective covers 2 around the connection between the pier and the pile foundation to ensure full coverage and tight fit. Use the butt sealing layer 21 to strengthen the sealing of the connection to prevent moisture and impurities from entering, creating a dry and stable construction environment for subsequent repair work.

[0072] S4. Inside the assembled protective cover 2, the damaged concrete is first cleaned to expose the steel bars and other structures. Then, a repair plan is formulated according to the damage, such as adding a steel mesh, using high-strength concrete for pouring, etc. The multi-section telescopic shaft 11 and the thermal insulation shielding layer 12 of the adaptive shielding mechanism 1 are used to tightly fit and cover the reinforced area. At the same time, the stable binding mechanism 14 and the sealing mechanism 13 are used to ensure the reinforcement effect and the sealing of the overall structure.

[0073] S5. During the reinforcement process, the intelligent temperature control system in the assembled protective cover 2 is started to adjust the internal environment according to actual needs to ensure that the concrete pouring and curing process is carried out within an appropriate temperature range. At the same time, the temperature sensor is continuously used to monitor the internal temperature and the data is fed back to the control system so as to adjust the temperature control heating device 22 in time to ensure the construction quality.

[0074] S6. After the reinforcement work is completed, continue to regularly monitor the connection between the pier and the pile foundation, evaluate the repair effect and record the data. According to the monitoring results, adjust the maintenance strategy in time to ensure the long-term stability and safety of the bridge structure.

[0075] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A bridge pile reinforcement device, comprising an adaptive protective member installed on the outside of a prefabricated bridge pier (3), characterized in that: The adaptive protective element comprises an assembled protective cover (2) and an adaptive shielding mechanism (1); A plurality of assembled protective covers (2) are provided and are spliced ​​together, a heat-insulating layer is provided in the wall thickness of the assembled protective cover (2), and a temperature-regulating heating device (22) and a temperature sensor are also installed on the inner wall of the assembled protective cover (2); The adaptive shielding mechanism (1) comprises a multi-section telescopic shaft (11), a heat-insulating shielding layer (12), a sealing mechanism (13) and a stable binding mechanism (14); A plurality of multi-section telescopic shafts (11) are provided and distributed on the top of the assembled protective cover (2); The heat-insulating shielding layer (12) is installed at the telescopic end of the multi-section telescopic shaft (11), and the heat-insulating shielding layer (12) is used to shield the outer wall of the prefabricated bridge pier (3); The sealing mechanism (13) is installed on the outer wall of the assembled protection cover (2), and the sealing mechanism (13) is used to seal the joint of the thermal insulation shielding layer (12); The stable binding mechanism (14) is installed at the extended end of the multi-section telescopic shaft (11), and the stable binding mechanism (14) is used to bind and fix the thermal insulation shielding layer (12).

2. A bridge foundation pile reinforcement device according to claim 1, characterized in that: A guide folding mark (121) is provided on the thermal insulation shielding layer (12), a plurality of interlaced rings (122) are also installed on the extended end of the thermal insulation shielding layer (12), and a Velcro sub-surface (123) is provided on the outer splicing area of ​​the thermal insulation shielding layer (12).

3. A bridge foundation pile reinforcement device according to claim 2, characterized in that: The sealing mechanism (13) comprises a winding rail (132) installed on the side wall of the assembled protection cover (2), a first winding roller (133) is installed inside the winding rail (132), and a sealing roll (131) is provided on the first winding roller (133).

4. The bridge foundation pile reinforcement device according to claim 1, characterized in that: The stable binding mechanism (14) comprises a locking winding box (141) mounted on a multi-section telescopic shaft (11); a material storage chamber (1411) and an interlaced rail (1412) are provided inside the locking winding box (141); a second winding roller (142) is provided inside the material storage chamber (1411); a locking belt (144) is mounted on the second winding roller (142); and a positioning locking wheel (143) is mounted inside the interlaced rail (1412).

5. The bridge foundation pile reinforcement device according to claim 4, characterized in that: The positioning locking wheel (143) comprises an anti-rotation limit shaft (1431) installed inside the interlaced rail (1412), a limit gear (1437) is installed on the outer side of the anti-rotation limit shaft (1431), the interior of the limit gear (1437) is covered with first limit slots (1438), and the outer side of the limit gear (1437) is covered with limit teeth (1439).

6. The bridge foundation pile reinforcement device according to claim 5, characterized in that: The outer wall of the anti-rotation limit shaft (1431) is provided with a plurality of limit slide rails (1432), the interior of the limit slide rails (1432) is provided with limit clamping blocks (1433), the interior of the anti-rotation limit shaft (1431) is provided with a pressing adjustment shaft (1434), a connecting rod (1435) is provided between the pressing adjustment shaft (1434) and the limit clamping blocks (1433), and a return spring (1436) is provided between the pressing adjustment shaft (1434) and the anti-rotation limit shaft (1431).

7. The bridge foundation pile reinforcement device according to claim 4, characterized in that: A flexible metal strip (1441) is provided inside the locking belt (144), an elastic buffer layer (1442) is provided outside the locking belt (144), and a second limiting slot (1443) is provided on the inner wall of the elastic buffer layer (1442).

8. The bridge foundation pile reinforcement device according to claim 7, characterized in that: The stable binding mechanism (14) also includes a pushing mechanism (145) for pushing the locking belt (144), the pushing mechanism (145) includes a movable bracket (1451) installed on the outside of the locking winding box (141), a threaded adjustment shaft (1453) is installed between the movable bracket (1451) and the locking winding box (141), and a pressing roller (1452) is installed at the contact end of the movable bracket (1451).

9. The bridge foundation pile reinforcement device according to claim 1, characterized in that: The temperature regulating heating device (22) comprises an annular heating tube (221) installed inside the assembled protective cover (2); a spiral ventilation track (222) is provided on the outer side of the annular heating tube (221); the spiral ventilation track (222) is covered with inclined flow grooves (2221); and a blower (223) is also installed on the spiral ventilation track (222).

10. A method for reinforcing a bridge foundation pile using a bridge foundation pile reinforcement device for bridge maintenance, using the bridge foundation pile reinforcement device according to any one of claims 1 to 9, characterized in that: The steps include: S1. After the flood, first conduct a comprehensive assessment of the bridge affected by the flood, paying special attention to the damage at the connection between the pier and the pile foundation. After confirming the piers that need to be repaired, prepare special reinforcement equipment and materials, including the adjusted assembly protective cover (2); S2. Before the maintenance work, a temporary support structure is used to stabilize the bridge pier to prevent instability caused by the reinforcement work. Subsequently, an assembled protective cover (2) is built around the connection between the bridge pier and the pile foundation. The assembled protective cover (2) has stronger structural strength and waterproof performance to cope with possible secondary water flow impact. At the same time, it is ensured that the internal space of the assembled protective cover (2) is sufficient to facilitate subsequent construction operations; S3. Precisely assemble a plurality of specially made protective assembling covers (2) around the connection between the pier and the pile foundation to ensure full coverage and tight fit, and use a butt sealing layer (21) to strengthen the sealing of the connection to prevent moisture and impurities from entering, thereby creating a dry and stable construction environment for subsequent repair work; S4. Inside the assembled protective cover (2), the damaged concrete is first cleaned to expose the steel bars and other structures. Then, a repair plan is formulated according to the damage, such as adding a steel mesh, using high-strength concrete for pouring, etc. The multi-section telescopic shaft (11) and the heat-insulating shielding layer (12) of the adaptive shielding mechanism (1) are used to closely fit and cover the reinforced area. At the same time, the stable binding mechanism (14) and the sealing mechanism (13) are used to ensure the reinforcement effect and the sealing of the overall structure; S5. During the reinforcement process, the intelligent temperature control system in the assembled protective cover is started to adjust the internal environment according to actual needs to ensure that the concrete pouring and curing process is carried out within a suitable temperature range. At the same time, the internal temperature is continuously monitored using a temperature sensor and the data is fed back to the control system so as to adjust the temperature control heating device (22) in time to ensure the construction quality; S6. After the reinforcement work is completed, continue to regularly monitor the connection between the pier and the pile foundation, evaluate the repair effect and record the data. According to the monitoring results, adjust the maintenance strategy in time to ensure the long-term stability and safety of the bridge structure.

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