A detachable ring hoop device for reinforcing a bridge pier

Abstract

The utility model relates to the field of bridge pier reinforcing, especially to a detachable hoop device for bridge pier reinforcing, which comprises four groups of workpieces, each group of workpieces comprising a left arc plate, a right arc plate and a middle arc plate, the four groups of workpieces being connected by locking screws to form a hoop, which is detachably mounted on a bridge pier body; the middle arc plate is assembled on one side of the left arc plate and the right arc plate close to the bridge pier body through an adjusting assembly, a fixing strip is mounted on the adjusting assembly, the fixing strip abuts against the surfaces of the left arc plate and the right arc plate to enhance the connection stability, the left arc plate and the right arc plate are connected through the tensioning assemblies arranged on their surfaces, and the left arc plate and the right arc plate of adjacent workpieces are connected by locking screws, the utility model has a simple structure, can be quickly installed and non-destructively disassembled through the locking screws and the adjusting assembly, shortens the installation time, is suitable for bridge piers of various shapes, can be detachable, has strong adaptability and bears force uniformly, and can improve construction efficiency and reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of bridge pier reinforcement, and in particular to a detachable circumferential clamp device for bridge pier reinforcement. Background Technology

[0002] With the acceleration of urbanization and the widespread construction of transportation infrastructure, the structural safety and durability of bridges, as important transportation hubs, have received increasing attention. Bridge piers, as the main load-bearing components of bridges, bear the loads of vehicles, wind, earthquakes, and environmental corrosion over long periods, making them prone to cracking, deformation, or localized damage. To ensure the safe operation of bridges, pier reinforcement technology has become an important research direction in the engineering field.

[0003] Existing methods for reinforcing bridge piers mainly include reinforced concrete encasement, carbon fiber cloth bonding, and steel clamp installation. Among these, reinforced concrete encasement has a long construction period, high cost, and causes significant damage to the original structure; while carbon fiber cloth reinforcement is lightweight, its impact resistance and durability are limited, making it difficult to cope with long-term use in complex environments; traditional steel clamps mostly use welding or fixed connections, which have problems such as complex installation, non-removability, and poor adaptability. Especially when dealing with bridge piers of different diameters or irregular shapes, the construction difficulty increases, and the maintenance and replacement costs are high. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a detachable circumferential clamp device for bridge pier reinforcement. It has a simple structure and is easy to install. Combined with adjustment components, anti-slip pads and tensioning components, it is detachable, highly adaptable and has uniform force distribution, which improves construction efficiency and reduces maintenance costs, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a detachable circumferential clamp device for reinforcing bridge piers, comprising four sets of workpieces, each set of workpieces including a left arc plate, a right arc plate and a middle arc plate, the four sets of workpieces being connected by locking screws to form a circumferential clamp, the circumferential clamp being detachably installed on the bridge pier body;

[0006] The middle arc plate is assembled on the side of the left and right arc plates near the pier body by means of an adjustment assembly. The adjustment assembly is equipped with a fixing strip, which abuts against the surface of the left and right arc plates to enhance the connection stability. The left and right arc plates are connected by a tensioning assembly set on their surface. The left and right arc plates of adjacent workpieces are connected by a locking screw assembly.

[0007] Preferably, anti-slip pads are provided between the left arc plate, right arc plate, and middle arc plate and the pier body. The anti-slip pads are made of rubber or equivalent elastic material and are fixed to the inner side of the middle arc plate to increase the friction between the device and the pier body.

[0008] Preferably, the adjustment assembly includes an adjustment groove and an adjustment screw assembly. The adjustment groove is formed on the left and right arc plates, and the adjustment screw assembly is fixedly set on the middle arc plate and located in the adjustment groove. The adjustment screw assembly passes through the through hole formed on the fixing strip and fixes the fixing strip against the surface of the left and right arc plates, and can adjust the relative position of the middle arc plate with the left and right arc plates.

[0009] Preferably, the fixing strip is provided with at least one limiting block, and multiple limiting holes are evenly opened on the surfaces of the left and right arc plates along the direction of the adjustment groove. The limiting block is inserted into the limiting hole to increase the limiting effect of the fixing strip.

[0010] Preferably, the tensioning assembly includes two symmetrically arranged tensioning hooks, a double-ended bolt, two correspondingly arranged fixing blocks, and a tensioning groove. The fixing blocks are respectively arranged on the surfaces of the left and right arc plates and are provided with tensioning grooves. The tensioning hooks are threaded to both ends of the double-ended bolts and hook into the tensioning grooves to adjust the connection tightness between the left and right arc plates.

[0011] Preferably, the double-ended bolt is a high-strength alloy steel bolt with positive and negative threads at both ends, and a hexagonal prism structure in the middle, which facilitates twisting with tools.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] High efficiency, easy disassembly and strong adaptability: Quick installation and non-destructive disassembly are achieved through locking screws and adjustment components. The adjustment groove and limiting structure are adapted to piers of different diameters, shortening installation time, reducing maintenance costs, and suitable for piers of various shapes.

[0014] Uniform stress distribution and high durability: The circumferential clamp, combined with the tensioning assembly and anti-slip pad, evenly distributes the compressive force and prevents crack propagation. Components such as the arc plate, fixing strip, and screw assembly can be made of high-strength alloy steel, which enhances the environmental adaptability of the device.

[0015] Easy to operate and economical: The double-ended bolt hexagonal prism design facilitates tool operation, the modular structure reduces production and construction costs, and non-professionals can quickly complete the installation, making it suitable for large-scale promotion and emergency reinforcement projects. Attached Figure Description

[0016] Figure 1 This is an assembly diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the tensioning component of this utility model;

[0019] Figure 4This is a schematic diagram of the fixing strip of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Pier body; 2. Anti-slip pad; 3. Right arc plate; 4. Left arc plate; 5. Tensioning assembly; 501. Tensioning hook; 502. Double-ended bolt; 503. Fixing block; 504. Tensioning groove; 6. Fixing strip; 7. Locking screw assembly; 8. Middle arc plate; 9. Limiting hole; 10. Adjusting assembly; 1001. Adjusting groove; 1002. Adjusting screw assembly; 11. Limiting block; 12. Through hole. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, they are based on the appendix. Figure 2 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a detachable circumferential clamp device for reinforcing bridge piers, comprising four sets of workpieces, each set of workpieces including a left arc plate 4, a right arc plate 3 and a middle arc plate 8, the four sets of workpieces being connected by a locking screw set 7 to form a circumferential clamp, the circumferential clamp being detachably installed on the bridge pier body 1;

[0024] The circumferential clamping structure, through the tightening of the locking screw group 7, achieves a uniform compressive force distribution on the pier body 1, thereby enhancing the structural stability of the pier and preventing local deformation or cracking caused by external loads or environmental factors.

[0025] The left arc plate 4, right arc plate 3 and middle arc plate 8 of each workpiece are connected by the adjustment component 10 and the tensioning component 5 to form an arc-shaped unit. The ends of the four arc-shaped units are connected one by one to form a complete ring through the locking screw group 7. After the circumferential clamp wraps the pier body 1, it can be detached and installed by adjusting the tightness of the locking screw group 7.

[0026] Four sets of workpieces are arranged around the pier body 1, and then the locking bolts 7 are tightened one by one until the clamps are tightly attached to the pier surface; when disassembling, the bolts can be loosened in the reverse direction to separate them.

[0027] The functions of the left arc plate 4, right arc plate 3, and middle arc plate 8 are to provide left-side arc support, right-side arc support, and middle arc filling, respectively, to achieve continuous coverage of the circumference of the bridge pier. Their arc design and uniform thickness distribution ensure even force transmission. The advantages of this design are its simple structure, convenient installation, and ease of rapid on-site reinforcement. Furthermore, the detachable design reduces maintenance costs and avoids the irreversibility of traditional welded clamps.

[0028] The left arc plate 4, right arc plate 3, and middle arc plate 8 can be made of Q235 carbon steel or stainless steel 304 to ensure corrosion resistance and high strength.

[0029] The middle arc plate 8 is assembled on the side of the left arc plate 4 and the right arc plate 3 near the pier body 1 by means of the adjusting component 10. The adjusting component 10 is equipped with a fixing strip 6, which abuts against the surface of the left arc plate 4 and the right arc plate 3 to enhance the connection stability. The left arc plate 4 and the right arc plate 3 are connected by the tensioning component 5 provided on their surface. The left arc plate 4 and the right arc plate 3 of adjacent workpieces are connected by the locking screw group 7.

[0030] The synergistic effect of the tensioning component 5, through threaded adjustment, enables fine-tuning and tightening of the left arc plate 4 and the right arc plate 3, ensuring the fit of the clamp on the irregular surface of the pier, improving the overall uniformity of force distribution, and the adjustment component 10 ensures that the device is suitable for pier bodies 1 of different diameters.

[0031] The middle arc plate 8 is connected to the fixing strip 6 via the adjusting screw assembly 1002. The end of the fixing strip 6 abuts against the surfaces of the left arc plate 4 and the right arc plate 3 to form a stable structure. The tensioning assembly 5 connects the left arc plate 4 and the right arc plate 3 on both sides. The tensioning hook 501 engages with the thread of the double-headed bolt 502 to tighten the fixing block 503, thereby achieving lateral fastening. The connection of adjacent workpieces relies on the locking screw assembly 7 passing through the preset hole to fix the right arc plate 3 of one group to the left arc plate 4 of the next group end to end.

[0032] During installation, first loosen the adjusting screw assembly 1002 to adjust the position of the middle arc plate 8 so that it fits the curve of the pier. Then tighten the adjusting screw assembly 1002 so that the fixing strip 6 abuts against the surface of the left arc plate 4 and the right arc plate 3. Finally, tighten the clamps section by section through the tensioning assembly 5 and the locking screw assembly 7 until the entire circumferential clamp is closed.

[0033] The fixing strip 6 is fixed to the screw assembly through the through hole 12 to enhance the shear resistance. The adjusting component 10 allows the relative displacement of the left arc plate 4 and the right arc plate 3. The tensioning component 5 provides adjustable fastening force to the left arc plate 4 and the right arc plate 3 through bidirectional adjustment of the positive and negative threads, which improves the adaptability of the device and can cope with the problem of uneven surface or dimensional deviation of the pier. At the same time, it enhances the overall rigidity and reduces the risk of loosening under vibration.

[0034] Furthermore, anti-slip pads 2 are provided between the left arc plate 4, the right arc plate 3, and the middle arc plate 8 and the pier body 1. The anti-slip pads 2 are made of rubber or equivalent elastic material and are fixed to the inner side of the middle arc plate 8 to increase the friction between the device and the pier body 1. The elastic deformation of the anti-slip pads 2 generates microscopic convex-concave contact, increases the static friction coefficient, and prevents the clamp from sliding under load. The anti-slip pads 2 are embedded or bonded to the inner side of the middle arc plate 8 and are in direct contact with the surface of the pier body 1. When the clamp is tightened, the anti-slip pads 2 are compressed and deformed to fill the gap, ensuring uniform force transmission.

[0035] Furthermore, the adjustment assembly 10 includes an adjustment groove 1001 and an adjustment screw assembly 1002. The adjustment groove 1001 is formed on the left arc plate 4 and the right arc plate 3. The adjustment screw assembly 1002 is fixedly set on the middle arc plate 8 and located in the adjustment groove 1001. The adjustment screw assembly 1002 passes through the through hole 12 formed on the fixing strip 6, fixing the fixing strip 6 against the surface of the left arc plate 4 and the right arc plate 3, and can adjust the relative position of the middle arc plate 8 with the left arc plate 4 and the right arc plate 3.

[0036] The movement of the left arc plate 4 and the right arc plate 3 can drive the adjusting screw assembly 1002 to move within the adjusting groove 1001, making it easy to adapt to pier bodies 1 of different diameters. The fixing strip 6 can increase the fixing strength of the left arc plate 4 and the right arc plate 3 after adjustment, prevent the left arc plate 4 and the right arc plate 3 from slipping, and ensure that the clamp tightly wraps around the pier.

[0037] One end of the adjusting screw assembly 1002 is fixed to the middle arc plate 8, and the other end passes through the through hole 12 of the fixing strip 6 and through the adjusting groove 1001. After the nut is tightened, the end of the fixing strip 6 presses against the surface of the left arc plate 4 and the right arc plate 3 to form a lock.

[0038] During use, first loosen the nut to allow the screw assembly to slide and adjust its position within the groove, then tighten the nut to lock the fixing strip 6, thus enabling the movement of the left arc plate 4 and the right arc plate 3; disassembly is performed in reverse order. It is easy to operate, has a wide adjustment range, and is readily adaptable to bridge piers of different diameters on-site, improving installation efficiency and accuracy.

[0039] Furthermore, the fixing strip 6 is provided with at least one limiting block 11, and multiple limiting holes 9 are evenly opened on the surfaces of the left arc plate 4 and the right arc plate 3 along the direction of the adjusting groove 1001. The limiting block 11 is inserted into the limiting hole 9 to increase the limiting effect of the fixing strip 6.

[0040] The engagement of the limiting block 11 and the limiting hole 9 generates mechanical resistance, preventing the fixing strip 6 from sliding along the groove direction under vibration or load, thus improving the fatigue resistance of the connection. When the fixing strip 6 abuts, the limiting block 11 is inserted into the corresponding hole, forming a vertical lock, which enhances the reliability of the structure and reduces the risk of loosening during long-term use, especially under dynamic load conditions.

[0041] Furthermore, the tensioning assembly 5 includes two symmetrically arranged tensioning hooks 501, double-ended bolts 502, two correspondingly arranged fixing blocks 503, and a tensioning groove 504. The fixing blocks 503 are respectively arranged on the surfaces of the left arc plate 4 and the right arc plate 3 and are provided with tensioning grooves 504. The tensioning hooks 501 are threaded to both ends of the double-ended bolts 502 and hooked into the tensioning grooves 504 to adjust the connection tightness between the left arc plate 4 and the right arc plate 3.

[0042] The tensioning assembly 5 is based on the principle of bidirectional thread tension. The rotation of the positive and negative threads causes the tensioning hooks 501 to tighten towards the center, generating a uniform tension. The tensioning hooks 501 are threaded onto both ends of the double-ended bolt 502, and the hook ends are inserted into the tensioning groove 504. When the double-ended bolt 502 is rotated, the two tensioning hooks 501 simultaneously pull closer to the fixing block 503, thereby achieving relative tensioning of the left arc plate 4 and the right arc plate 3.

[0043] During the initial connection, first hook the tensioning hook 501 into the groove, then use a tool to rotate the double-headed bolt 502 in the middle to tighten it until the torque is appropriate, thus completing the relative tightening of the left arc plate 4 and the right arc plate 3.

[0044] The tightening force is controllable and the operation is symmetrical, avoiding deformation caused by unilateral force, improving the overall uniformity of the clamp, and making it easy for non-professionals to use.

[0045] Furthermore, the double-ended bolt 502 is a high-strength alloy steel bolt with positive and negative threads at both ends, and a hexagonal prism structure in the middle, which makes it easy to twist with tools.

[0046] Based on the differential effect of the reverse threads, the threads at both ends move relative to each other when the middle is rotated, so as to achieve synchronous tightening of the tension hook 501, while the hexagonal prism provides a torque transmission surface to ensure efficient operation.

[0047] A torque wrench is used to hold the hexagonal prism in place, allowing for overall rotation. Clockwise rotation tightens the screw, while counterclockwise rotation loosens it. Regularly check for thread wear after installation. The 502 double-ended bolt offers bidirectional adjustment. This improves operational convenience and tightening accuracy, reduces tool changeover time, and is suitable for work at heights or in confined spaces.

[0048] The working principle and usage method of this utility model are as follows:

[0049] The overall working principle of the device is to achieve radial constraint and axial stability of the pier body 1 by wrapping and fastening the circumferential clamps at multiple points. Combined with the friction enhancement of the anti-slip pad 2 and the adaptability of the adjustment component 10, the external load is evenly distributed to prevent the expansion of cracks in the pier.

[0050] The specific usage method is as follows:

[0051] Preparation phase: Measure the diameter of the bridge piers, select the appropriate size of the arc plate, and check the integrity of all bolt assemblies and bedding layers;

[0052] Assembly stage: The middle arc plate 8 is assembled onto the left arc plate 4 and the right arc plate 3 via the adjusting component 10;

[0053] Enclosure stage: The four sets of workpieces are sequentially enclosed on the bridge pier, and the adjacent ends are connected and fastened by locking screw group 7;

[0054] Tightening stage: After installing the anti-slip pad 2, adjust the tightness step by step using the tensioning assembly 5 and the adjusting screw assembly 1002 until there is no gap in the clamp;

[0055] Verification phase: Apply test loads to check stability, and calibrate with a torque wrench if necessary;

[0056] Disassembly stage: Loosen the screw assembly in reverse order and separate the workpiece for storage.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A detachable circumferential clamp device for reinforcing bridge piers, comprising four sets of workpieces, each set including a left arc plate (4), a right arc plate (3), and a middle arc plate (8), the four sets of workpieces being connected by locking screws (7) to form a circumferential clamp, the circumferential clamp being detachably installed on the bridge pier body (1), characterized in that: The middle arc plate (8) is assembled on the side of the left arc plate (4) and the right arc plate (3) near the pier body (1) by means of the adjustment component (10). The adjustment component (10) is equipped with a fixing strip (6), which abuts against the surface of the left arc plate (4) and the right arc plate (3) to enhance the connection stability. The left arc plate (4) and the right arc plate (3) are connected by the tensioning component (5) provided on their surface. The left arc plate (4) and the right arc plate (3) of adjacent workpieces are connected by the locking screw assembly (7).

2. The detachable circumferential clamp device for reinforcing bridge piers according to claim 1, characterized in that: Anti-slip pads (2) are provided between the left arc plate (4), right arc plate (3) and middle arc plate (8) and the pier body (1). The anti-slip pads (2) are made of rubber or equivalent elastic material and are fixed to the inner side of the middle arc plate (8) to increase the friction between the device and the pier body (1).

3. The detachable circumferential clamp device for reinforcing bridge piers according to claim 1, characterized in that: The adjustment assembly (10) includes an adjustment groove (1001) and an adjustment screw assembly (1002). The adjustment groove (1001) is opened on the left arc plate (4) and the right arc plate (3). The adjustment screw assembly (1002) is fixedly set on the middle arc plate (8) and located in the adjustment groove (1001). The adjustment screw assembly (1002) passes through the through hole (12) opened on the fixing strip (6) to fix the fixing strip (6) against the surface of the left arc plate (4) and the right arc plate (3), and can adjust the relative position of the middle arc plate (8) with the left arc plate (4) and the right arc plate (3).

4. The detachable circumferential clamp device for reinforcing bridge piers according to claim 3, characterized in that: The fixing strip (6) is provided with at least one limiting block (11). Multiple limiting holes (9) are evenly opened on the surfaces of the left arc plate (4) and the right arc plate (3) along the direction of the adjustment groove (1001). The limiting block (11) is inserted into the limiting hole (9) to increase the limiting effect of the fixing strip (6).

5. A detachable circumferential clamp device for reinforcing bridge piers according to claim 1, characterized in that: The tensioning assembly (5) includes two symmetrically arranged tensioning hooks (501), a double-ended bolt (502), two correspondingly arranged fixing blocks (503) and a tensioning groove (504). The fixing blocks (503) are respectively arranged on the surface of the left arc plate (4) and the right arc plate (3) and are provided with tensioning grooves (504). The tensioning hooks (501) are threaded to both ends of the double-ended bolts (502) and hooked in the tensioning grooves (504) to adjust the connection tightness between the left arc plate (4) and the right arc plate (3).

6. A detachable circumferential clamp device for reinforcing bridge piers according to claim 5, characterized in that: The double-ended bolt (502) is a high-strength alloy steel bolt with positive and negative threads at both ends, and a hexagonal prism structure in the middle, which makes it easy to twist with tools.

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