Multi-angle adjusting comb plate type bridge expansion device

Abstract

The utility model relates to the technical field of bridge expansion devices, in particular to a multi-angle adjusting comb plate type bridge expansion device, which comprises two oppositely arranged beam body end parts, a comb plate expansion device and a multi-angle deformation adjusting device, reserved grooves are formed in the opposite sides of the ends of the two beam bodies, a bridge expansion joint is formed between the two reserved grooves, comb plate expansion devices are arranged in the two reserved grooves, the two comb plate expansion devices are symmetrically arranged on the two sides of the bridge expansion joint, and a multi-angle deformation adjusting device is arranged under the bridge expansion joint. The multi-angle deformation adjusting device is respectively connected with the end parts of the beam body on two sides; through the comb plate expansion and contraction device, the stretching and compression free deformation and the expansion and contraction free change of the ends of the two beam bodies caused by factors such as temperature change and concrete shrinkage are allowed, so that the stress concentration phenomenon between the ends of the two beam bodies is effectively released and resolved; the multi-angle deformation adjusting device can ensure multi-direction and multi-angle stress release of the bridge body.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge expansion joint technology field especially relates to a multi -angle adjustment comb tooth board formula bridge expansion joint. BACKGROUND

[0002] In order to adapt to the need of bridge structure deformation, expansion joint needs to be arranged at the end of superstructure bridge or abutment, so that vehicles can pass through bridge expansion joint smoothly, safely and comfortably, and the needs of avoiding stress concentration of bridge superstructure, satisfying free expansion of beam end and corner deformation are met, and expansion joint device should be arranged at the position of expansion joint; Expansion joint device is an important auxiliary facility of bridge, and should be made of durable, anti-seepage, anti-skid and other good performance materials and structure forms, and easy to clean, maintain and replace according to the length and structure form of bridge. The factors causing the expansion and contraction of bridge expansion joint device include: expansion and contraction caused by temperature change (temperature rise and fall, temperature difference of different parts of beam body), beam body shortening caused by concrete shrinkage, beam body shortening caused by concrete creep, expansion and contraction caused by shear deformation of plate type rubber support caused by automobile braking force, and expansion and contraction caused by earthquake action, wind load and deflection of beam, and expansion joint device should adapt to the longitudinal, transverse and vertical deformation requirements of bridge.

[0003] The expansion joint device of fixed production mainly includes modulus type expansion joint (MA, MB), comb tooth plate expansion joint (SC, SSA, SSB), seamless expansion joint (W), which can effectively release the stress concentration of beam end, make the deformation of beam end free expansion, and meet the small deformation misplacement performance under the condition of meeting horizontal friction resistance and uniform deformation. When the bridge deformation causes significant transverse misplacement, longitudinal misplacement and vertical misplacement of expansion joint device, the expansion joint device produces larger plane corner, sector displacement angle and vertical corner, and the performance of the expansion joint device of fixed production needs to be further improved and studied, and deformation performance detection should be carried out.

[0004] The utility model discloses a bridge expansion unit component and bridge expansion joint device, bridge expansion unit component, through the deformation of displacement column main body, can complete horizontal rotation, vertical rotation and torsion action, fully meet the displacement of bridge superstructure under external force, and meet the shock attenuation requirement. However, the expansion joint device can only realize free expansion in the use process, and cannot realize angle deviation deformation free adjustment when the beam body occurs local bearing or misplacement deformation, so that the beam body stress caused by angle deviation cannot be effectively released, and the quality of bridge body is affected. In addition, the overall structure strength is low and not easy to assemble, the protection performance is poor, and the use effect is not ideal. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of multi-angle adjusting comb plate type bridge expansion joint to solve the technical problems existing in prior art.

[0006] In order to achieve the above object, the utility model provides a kind of multi-angle adjusting comb plate type bridge expansion joint, comprising: two beam body ends of relative arrangement, comb plate expansion joint and multi-angle deformation adjusting device;Two relative sides of the beam body end are equipped with reserved slot, and the bridge expansion joint is formed between the two reserved slots, the comb plate expansion joint is equipped in the two reserved slots, and the two comb plate expansion joints are symmetrically arranged on the two sides of the bridge expansion joint, and the multi-angle deformation adjusting device is arranged below the bridge expansion joint, and the multi-angle deformation adjusting device is connected with the beam body end on its two sides respectively, and the steel fiber reinforced concrete is arranged at the joint of the comb plate expansion joint and the beam body end, and the surface of the steel fiber reinforced concrete is flush with the surface of the beam body end.Two comb plate expansion joints are symmetrically arranged, so that the two beam body ends can be freely deformed under the influence of temperature change, concrete shrinkage, creep, vehicle load and other factors, and the expansion amount can be freely changed, so that the stress concentration between the two beam body ends can be effectively released and resolved, the tensile stress of the full prestressed concrete member is avoided, the tensile stress of the A-type prestressed concrete member is greater than the design value of the axial tensile strength, and the maximum crack width of the reinforced concrete member and the B-type prestressed concrete member is greater than the maximum crack width limit value;In addition, since the surface of the steel fiber reinforced concrete is flush with the surface of the beam body end, the bridge can be passed smoothly, comfortably and safely, and the overall structure of the expansion joint is stable, reliable and safe.In addition, the multi-angle deformation adjusting device is arranged below the bridge expansion joint, and the multi-angle deformation adjusting device is connected with the beam body end on its two sides.Two beam body ends can meet the expansion needs of multi-angle deformation free adjustment caused by local bearing, torsional deformation, misplacement deformation, load angle, beam body longitudinal slope and other factors through the multi-angle deformation adjusting device, can guarantee the stress release of bridge body in multiple directions and multiple angles, and the overall structure is stable and easy to assemble.

[0007] As an optional embodiment, in the multi-angle adjusting comb plate type bridge expansion joint provided by the utility model, the comb plate expansion joint comprises an expansion body, a plurality of comb plates are arranged on the expansion body at intervals, an elastic member is arranged on the expansion body, a plurality of U-shaped embedded bars are arranged on the outer side of the expansion body away from the comb plates, and the expansion body is fixed in the reserved slot through the U-shaped embedded bars, so as to facilitate the fixation of the expansion body.

[0008] As an optional embodiment, in the multi-angle adjusting comb plate type bridge expansion joint provided by the utility model, the side of the expansion main body close to the reserved groove is provided with a corner cutout, one end of the U-shaped embedded bar is anchored outside the expansion main body, and the other end is anchored in the corner cutout. In order to ensure that the expansion main body is stably placed on the reserved groove, the comb plate expansion joint is provided with a corner cutout close to the beam end bottom surface; after the expansion main body is stably installed on the reserved groove, the pressing strip is arranged in the corner cutout of the expansion main body, so that the stable fixation of the expansion main body is ensured, one end of the U-shaped embedded bar is fixed outside the expansion main body, and the other end is fixed in the corner cutout, so as to enhance the overall stability.

[0009] As an optional embodiment, in the multi-angle adjusting comb plate type bridge expansion joint provided by the utility model, the comb plates of the two expansion main bodies opposite to each other are arranged in a staggered manner, and a gap is left between the two adjacent comb plates. Since the comb plate is arranged on each side of the expansion joint, and the comb plate extends towards the other expansion main body, the expansion joint spacing between the two beam end portions is compressed, and the comb plate is displaced horizontally. The same is true when the two beam bodies are separated from each other, so that the beam end portion can be freely expanded and deformed.

[0010] As an optional embodiment, in the multi-angle adjusting comb plate type bridge expansion joint provided by the utility model, a plurality of inverted U-shaped embedded anchoring bars and horizontal connecting support bars are arranged in the reserved groove, the inverted U-shaped embedded anchoring bars are embedded in the reserved groove, the top ends of the U-shaped embedded bars and the inverted U-shaped embedded anchoring bars are aligned and spaced apart, the horizontal connecting support bars penetrate all the inverted U-shaped embedded anchoring bars and the U-shaped embedded bars, and the U-shaped embedded bars of the expansion main body are welded and connected with the inverted U-shaped embedded anchoring bars through the horizontal connecting support bars. In order to fix the comb plate expansion joint in the reserved groove to achieve the fixing effect.

[0011] As an optional embodiment, in the multi-angle adjusting comb plate type bridge expansion joint provided by the utility model, the multi-angle deformation adjusting device comprises two angle deformation displacement bins arranged opposite to each other and a displacement slide rail, the two angle deformation displacement bins are connected through the displacement slide rail, the two angle deformation displacement bins are respectively connected with the beam end bottom portions on both sides, and the displacement slide rail can be freely rotated and moved in multiple angles and multiple directions. The two ends of the displacement slide rail are always not separated from the angle deformation displacement bin, and when the beam end portions of the two beam bodies are expanded and contracted, the displacement slide rail will also be displaced.

[0012] As an optional embodiment, in the multi-angle adjusting comb tooth plate type bridge expansion joint provided by the utility model, the both sides of the displacement slide rail are respectively provided with fixed side plates for limiting, damping springs are arranged between the two fixed side plates on the same side, and the angle of the end part of the displacement slide rail can be changed in the angle deformation displacement bin, so that the displacement deformation of the end parts of the two beam bodies can be effectively adapted to the larger plane rotation angle, the fan-shaped displacement angle and the vertical rotation angle.

[0013] As an optional embodiment, in the multi-angle adjusting comb tooth plate type bridge expansion joint provided by the utility model, the both sides of the displacement slide rail are respectively provided with fixed side plates for limiting, damping springs are arranged between the two fixed side plates on the same side, and the angle of the end part of the displacement slide rail can be changed in the angle deformation displacement bin, so that the displacement deformation of the end parts of the two beam bodies can be effectively adapted to the larger plane rotation angle, the fan-shaped displacement angle and the vertical rotation angle.

[0014] As an optional embodiment, in the multi-angle adjusting comb tooth plate type bridge expansion joint provided by the utility model, the both sides of the displacement slide rail are respectively provided with fixed side plates for limiting, damping springs are arranged between the two fixed side plates on the same side, and the angle of the end part of the displacement slide rail can be changed in the angle deformation displacement bin, so that the displacement deformation of the end parts of the two beam bodies can be effectively adapted to the larger plane rotation angle, the fan-shaped displacement angle and the vertical rotation angle.

[0015] As an optional embodiment, in the multi-angle adjusting comb tooth plate type bridge expansion joint provided by the utility model, the both sides of the displacement slide rail are respectively provided with fixed side plates for limiting, damping springs are arranged between the two fixed side plates on the same side, and the angle of the end part of the displacement slide rail can be changed in the angle deformation displacement bin, so that the displacement deformation of the end parts of the two beam bodies can be effectively adapted to the larger plane rotation angle, the fan-shaped displacement angle and the vertical rotation angle.

[0016] Compared with the prior art, the utility model technical scheme has the beneficial effects of:

[0017] I. The multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model consists of two beam ends arranged opposite each other, a comb-plate expansion joint, and a multi-angle deformation adjustment device. Each of the two beam ends has a pre-reserved groove on its opposite side, forming a bridge expansion joint between the two pre-reserved grooves. The comb-plate expansion joint is installed in each of the two pre-reserved grooves, and the two comb-plate expansion joints are symmetrically arranged on both sides of the bridge expansion joint. Through the two symmetrically arranged comb-plate expansion joints, the two beam ends can freely deform under tension and compression caused by factors such as temperature changes, concrete shrinkage, creep, and vehicle loads, allowing for free variation in the amount of expansion and contraction. The stress concentration phenomenon between the ends of the two beams can be effectively released and resolved, avoiding tensile stress in the fully prestressed concrete members, preventing the tensile stress of Class A prestressed concrete members from exceeding the design value of axial tensile strength, and preventing the calculated maximum crack width of reinforced concrete members and Class B prestressed concrete members from exceeding the maximum crack width limit. The comb plate expansion joint is provided with steel fiber reinforced concrete at the connection between the expansion joint and the beam end. The surface of the steel fiber reinforced concrete is flush with the surface of the beam end. Because the surface of the steel fiber reinforced concrete is flush with the surface of the beam end, it can ensure that vehicles pass smoothly, comfortably and safely on the bridge deck. The overall structure of the expansion joint is stable, reliable and safe.

[0018] II. The multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model, by setting up an angle deformation adjustment device, is located directly below the bridge expansion joint, and the multi-angle deformation adjustment device is connected to the beam ends on both sides respectively. The two beam ends, through the multi-angle deformation adjustment device, can meet the expansion and contraction needs of the beam caused by factors such as local load, torsional deformation, misalignment deformation, load rotation angle, and longitudinal slope of the beam, which can ensure stress release in multiple directions and angles of the bridge body, and the overall structure is stable and easy to assemble.

[0019] Thirdly, a fully installed telescopic water-guiding sealing strip is installed between the reserved slots. This is a water-guiding device that can provide shielding and protection. In addition, the telescopic water-guiding sealing strip can also prevent rainwater, debris, dust or gravel from eroding and abrading the ends of the beam, thereby improving the service life and durability of the beam. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1A schematic diagram of a multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model;

[0022] Figure 2 A schematic diagram of the longitudinal side structure of a multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model;

[0023] Figure 3 A schematic diagram of the longitudinal cross-sectional structure of a multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model;

[0024] Figure 4 A schematic diagram of the structure of a comb-plate type bridge expansion joint device with multi-angle adjustable comb-plate provided by this utility model;

[0025] Figure 5 A schematic diagram of the beam end and reserved groove of a multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model;

[0026] Figure 6 A bottom view of the installation of a multi-angle deformation adjustment device for a multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model;

[0027] Figure 7 A schematic diagram of the structure of a multi-angle deformation adjustment device for a multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model;

[0028] Figure 8 A schematic diagram of the components of a multi-angle deformation adjustment device for a multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model;

[0029] Figure 9 This utility model provides a schematic diagram of the installation structure of the telescopic water-guiding sealing strip of a multi-angle adjustable comb-plate type bridge expansion joint.

[0030] [Explanation of Labels in the Attached Image]

[0031] 1. Beam end; 11. Reserved groove; 111. Inverted U-shaped embedded anchor bar; 112. Transverse connection support bar; 12. Bridge expansion joint;

[0032] 2. Comb plate telescopic device; 21. Telescopic body; 22. Comb plate; 23. Elastic element; 24. U-shaped embedded rib; 25. Corner cut;

[0033] 3. Multi-angle deformation adjustment device; 31. Angle deformation displacement chamber; 311. Sliding block; 312. Lateral guide rail; 313. Displacement slot; 32. Displacement slide rail; 321. Directional ball; 322. Ball hole chamber; 33. Fixed side plate; 34. Damping spring;

[0034] 4. Telescopic water-guiding sealing strip; 41. Pressure strip; 42. Bolt;

[0035] 5. Steel fiber reinforced concrete. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that all directional indications in this utility model embodiment, such as first, second, up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0038] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] This utility model provides a multi-angle adjustable comb-plate type bridge expansion joint, such as... Figures 1-9 As shown, it includes: two beam ends 1 arranged opposite to each other, a comb-plate expansion joint 2, and a multi-angle deformation adjustment device 3; each of the two beam ends 1 has a reserved groove 11 on its opposite side, forming a bridge expansion joint 12 between the two reserved grooves 11, and the comb-plate expansion joint 2 is installed in each of the two reserved grooves 11. The two comb-plate expansion joints 2 are symmetrically arranged on both sides of the bridge expansion joint 12, and the multi-angle deformation adjustment device 3 is located directly below the bridge expansion joint 12. The multi-angle deformation adjustment device 3 is connected to the beam ends 1 on both sides respectively, and steel fiber reinforced concrete is provided at the connection between the comb-plate expansion joint 2 and the beam ends 1, with the surface of the steel fiber reinforced concrete flush with the surface of the beam ends 1. Figure 1 and Figure 2As shown, the two symmetrically arranged comb-plate expansion joints 2 allow for free tensile and compressive deformation of the two beam ends 1 caused by factors such as temperature changes, concrete shrinkage, creep, and vehicle loads. This allows for free variation in the amount of expansion and contraction, effectively releasing and mitigating stress concentration between the two beam ends 1. This prevents tensile stress in fully prestressed concrete members, avoids tensile stress in Class A prestressed concrete members exceeding the design value of axial tensile strength, and prevents the calculated maximum crack width of reinforced concrete members and Class B prestressed concrete members from exceeding the maximum crack width limit. Furthermore, as... Figure 6 As shown, by setting up an angle deformation adjustment device, the multi-angle deformation adjustment device 3 is located directly below the bridge expansion joint 12, and the multi-angle deformation adjustment device 3 is connected to the beam ends 1 on both sides respectively. The two beam ends 1, through the multi-angle deformation adjustment device 3, can meet the expansion and contraction needs of the beam caused by factors such as local load-bearing, torsional deformation, misalignment deformation, load rotation angle, and beam longitudinal slope, ensuring multi-directional and multi-angle stress release of the bridge body, and maintaining overall structural stability and ease of assembly. Figure 3 As shown, the comb plate telescopic device 2 is provided with steel fiber reinforced concrete 5 at the connection between it and the beam end 1. The surface of the steel fiber reinforced concrete 5 is flush with the surface of the beam end 1. Since the surface of the steel fiber reinforced concrete 5 is flush with the surface of the beam end 1, it can ensure that vehicles on the bridge pass smoothly, comfortably and safely. The overall structure of the telescopic device is stable, reliable and safe.

[0040] Furthermore, such as Figure 1 and Figure 4As shown, in the multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model, the comb-plate expansion joint 2 includes an expansion body 21, on which a plurality of spaced comb plates 22 are provided, and on which an elastic element 23 is provided. On the outer side of the expansion body 21 away from the comb plates 22, a plurality of U-shaped pre-embedded ribs 24 are provided. The expansion body 21 is fixed in the reserved groove 11 by the U-shaped pre-embedded ribs 24. By setting the expansion body 21 and setting a plurality of comb plates 22 on the expansion body 21, it is easy to use in conjunction. By setting the comb plates 22 on the expansion body 21, and when the comb plates 22 extend towards another expansion body 21, the expansion joint spacing between the two beam ends 1 is compressed, the comb teeth intersect and approach each other, and the evenly spaced comb plates 22 also undergo lateral displacement, so as to realize the free expansion and contraction deformation of the beam ends 1. The telescopic body 21 is equipped with an elastic element 23, which is an elastic rubber element. The elastic element 23 can be made of neoprene rubber, natural rubber, or EPDM rubber, which are capable of elastic deformation. The telescopic body 21 is a telescopic steel structure. The steel used for this telescopic steel structure should preferably be Q235 grade steel or Q345 grade steel. When the bridge structure is in a chloride environment, the telescopic device should preferably use Q335NHD, Q235NHE grade steel or Q355NHD, Q355NHE grade steel.

[0041] Furthermore, such as Figure 4 As shown, in the multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model, the expansion body 21 has a corner cutout 25 on the side near the reserved groove 11. One end of the U-shaped embedded rib 24 is anchored to the outside of the expansion body 21, and the other end is anchored in the corner cutout 25. In order to ensure that the expansion body 21 is placed stably on the reserved groove 11, the comb-plate expansion joint 21 has a corner cutout 25 near the bottom surface of the beam end. After the expansion body 21 is stably installed on the reserved groove 11, the pressure strip 41 is set in the corner cutout 25 of the expansion body 21, thereby ensuring the stable fixation of the expansion body 21. One end of the U-shaped embedded rib 24 is fixed to the outside of the expansion body 21, and the other end is fixed in the corner cutout 25 to enhance the overall stability.

[0042] Furthermore, in the multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model, the comb plates 22 of the two opposing expansion bodies 21 are staggered, and there is a gap between adjacent comb plates 22. Since each expansion body 21 at the expansion joint is provided with a comb plate 22, and when the comb plate 22 extends towards the other expansion body 21, the expansion joint distance between the two beam ends 1 is compressed, causing them to move closer to each other. The comb plates 22, which are set at intervals, also undergo lateral displacement. Similarly, the same applies when the two beams are separated, thereby realizing the free expansion and contraction deformation of the beam ends 1.

[0043] likeFigure 1 , Figure 2 and Figure 5 As shown, in the multi-angle adjustable comb-plate bridge expansion joint provided by this utility model, the reserved groove 11 is provided with a plurality of inverted U-shaped pre-embedded anchor bars 111 and transverse connecting support bars 112. The inverted U-shaped pre-embedded anchor bars 111 are pre-embedded in the reserved groove 11. The top ends of the U-shaped pre-embedded bars 24 are aligned with the top ends of the inverted U-shaped pre-embedded anchor bars 111 and are spaced apart. The transverse connecting support bars 112 penetrate all the inverted U-shaped pre-embedded anchor bars 111 and the U-shaped pre-embedded bars 24. The U-shaped pre-embedded bars 24 of the expansion body 21 are welded to the inverted U-shaped pre-embedded anchor bars 111 through the transverse connecting support bars 112. This facilitates fixing the comb-plate expansion joint 2 in the reserved groove 11 to achieve a fixing effect.

[0044] After the comb plate expansion joint 2 is fixed in the reserved groove 11 by the inverted U-shaped pre-embedded anchor bar 111 and the transverse connecting support bar 112, steel fiber reinforced concrete 5 is poured at the connection between the comb plate expansion joint 2 and the beam end 1. The standard value of the flexural tensile strength of the steel fiber reinforced concrete 5 should be selected according to the traffic load level: not less than 5MPa for light traffic, not less than 5.5MPa for medium traffic, and not less than 6MPa for extra-heavy and heavy traffic. The steel fiber reinforced concrete 5 should be mixed with a mixer to ensure that the steel fibers are evenly dispersed in the mixture and do not agglomerate, so that the comb plate expansion joint 2 and the beam end 1 form an integral whole, ensuring the overall structural strength and rigidity of the expansion joint. During construction, first verify the dimensions of the reserved groove 11 and check the specifications, quantity, and position of the inverted U-shaped embedded anchor bars 111. Then, roughen and clean the concrete inside the reserved groove 11. Next, hoist the two expansion joint bodies 21, ensuring that the center lines of the two expansion joint bodies 21 coincide with the center line of the expansion joint. After hoisting, each U-shaped embedded bar 24 is placed between two adjacent inverted U-shaped embedded anchor bars 111. At this time, the transverse connecting support bar 112 passes through all the U-shaped embedded bars 24 and the inverted U-shaped anchor bars 111. The pre-embedded anchor bar 111 is then welded together with the transverse connecting support bar 112, the U-shaped pre-embedded bar 24 and the inverted U-shaped pre-embedded anchor bar 111. The weld should be gas shielded welding of grade II. The weld should not have defects such as cracks, slag inclusions, lack of fusion, incomplete arc crater filling, misalignment and burns. This makes the beam end 1, the inverted U-shaped pre-embedded anchor bar 111 and the transverse connecting support bar 112 and the expansion body 21 form an integral whole, which can greatly improve the overall strength, stiffness and stability of the bridge superstructure.

[0045] In the multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model, such as Figure 6 and Figure 7As shown, the multi-angle deformation adjustment device 3 includes two angle deformation displacement chambers 31 and a displacement slide rail 32 arranged opposite to each other. The two angle deformation displacement chambers 31 are connected by the displacement slide rail 32, and the two angle deformation displacement chambers 31 are respectively connected to the bottom of the beam ends 1 on both sides. The displacement slide rail 32 can rotate and move freely in multiple angles and directions. The two ends of the displacement slide rail 32 never detach from the angle deformation displacement chambers 31. When the two beam ends 1 extend or retract, the displacement slide rail 32 will also move accordingly.

[0046] Specifically, in the multi-angle adjustable comb plate type bridge expansion joint provided by this utility model, fixed side plates 33 for limiting are respectively provided on both sides of the displacement slide rail 32, and a damping spring 34 is provided between the two fixed side plates 33 on the same side. The angle of the end of the displacement slide rail 32 can change within the angle deformation displacement chamber 31, which can effectively adapt to the large planar rotation angle, fan-shaped displacement angle and vertical rotation angle generated by the misalignment deformation of the ends 1 of the beams on both sides.

[0047] Furthermore, such as Figure 8 As shown, in the multi-angle adjustable comb-plate type bridge expansion joint provided by this utility model, the angle deformation displacement chamber 31 is provided with a sliding block 311, and the sliding block 311 is symmetrically provided with lateral guide rails 312 on both sides of the middle. The inner wall of the angle deformation displacement chamber 31 is provided with a displacement groove 313 that matches the lateral guide rail 312. The sliding block 311 can freely extend and retract within the angle deformation displacement chamber 31 through the lateral guide rail 312 and the displacement groove 313. The end of the displacement slide rail 32 is provided with a directional ball 321, and the side of the sliding block 311 near the directional ball 321 is provided with a ball hole chamber 322. The angle of the displacement slide rail 32 is freely adjustable within the sliding block 311 through the directional ball 321. The inner wall of the ball hole chamber 322 is provided with an elastic rubber layer, which is made of neoprene rubber, natural rubber and EPDM rubber. The two beam ends 1, through the angle deformation displacement chamber 31, can meet the expansion and contraction needs of the beam caused by factors such as local load, torsional deformation, misalignment deformation, load rotation angle, and longitudinal slope of the beam, and can ensure the release of stress in multiple directions and angles of the bridge body.

[0048] In use, for example, if one of the beam ends 1 is subjected to a vehicle load, the beam end 1 will slightly sink and deform downwards. At this time, the pressure end of the displacement slide rail 32 will move downwards, and the other unpressured end will change angle through the direction ball 321. Similarly, when the two beam ends 1 expand and contract, the displacement slide rail 32 moves in the angle deformation displacement chamber 31 through the sliding block 311, the lateral guide rail 312 and the displacement groove 313. The damping spring 34 releases the stress, thereby meeting the expansion and contraction needs of the beam caused by local load, torsional deformation, misalignment deformation, load rotation angle, beam longitudinal slope and other factors, ensuring the release of stress in multiple directions and angles of the bridge body.

[0049] Furthermore, such as Figure 9 As shown, in the multi-angle adjustable comb-plate type bridge expansion joint device provided by this utility model, an expansion joint 12 is provided with an expansion water-guiding sealing strip 4 perpendicular to the bridge centerline. The two sides of the expansion water-guiding sealing strip 4 are respectively fixed to the surface of the reserved groove 11. The expansion water-guiding sealing strip 4 is an expansion rubber sealing strip, mainly made of neoprene rubber, natural rubber and EPDM rubber. When the expansion joint of the adjacent beam end 1 expands and contracts freely, the expansion water-guiding sealing strip 4 also deforms accordingly. It is a water-guiding device that can play a role in shielding and protecting. In addition, the expansion water-guiding sealing strip 4 can also prevent rainwater, debris, dust or gravel from eroding and abrading the beam end 1, thereby improving the service life and durability of the beam.

[0050] The surface of the reserved groove 11 is provided with a pressure strip 41, which is used to fix the telescopic water-guiding sealing strip 4 by bolts 42. Specifically, the two sides of the telescopic water-guiding sealing strip 4 are fixed to the surface of the reserved groove 11 by stainless steel pressure strips 41 and high-strength bolts 42. The pressure strips 41 are matched with the corner cutouts 25 to ensure the stable fixation of the telescopic body 21.

[0051] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A multi-angle adjustment comb plate bridge expansion joint, characterized in that, The utility model relates to a bridge expansion joint structure, including opposite two beam body ends (1), comb plate telescopic device (2) and multi -angle deformation adjusting device (3), the opposite side of two beam body ends (1) is equipped with reservation groove (11), and the reservation groove (11) between two forms bridge expansion joint (12), two reservation grooves (11) are equipped with comb plate telescopic device (2) in, two comb plate telescopic devices (2) are symmetrically set up in the two sides of bridge expansion joint (12), the just below of bridge expansion joint (12) is equipped with multi -angle deformation adjusting device (3), and multi -angle deformation adjusting device (3) is connected with the beam body end (1) of its two sides respectively, and the steel fiber reinforced concrete (5) is equipped with in the junction of comb plate telescopic device (2) and beam body end (1), and the surface of steel fiber reinforced concrete (5) is flush with the surface of beam body end (1).

2. The multi-angle adjustment comb finger slab post bridge expansion joint of claim 1, wherein, The comb plate telescopic device (2) includes a telescopic body (21), a plurality of spaced comb plates (22) are provided on the telescopic body (21), an elastic member (23) is provided on the telescopic body (21), a plurality of U-shaped embedded bars (24) are provided on the outer side of the telescopic body (21) away from the comb plates (22), and the telescopic body (21) is fixed in the reservation groove (11) through the U-shaped embedded bars (24).

3. The multi-angle adjustment comb finger slab post bridge expansion joint of claim 2, wherein, The side of the telescopic body (21) close to the reservation groove (11) is provided with a corner cutout (25), one end of the U-shaped embedded bar (24) is anchored on the outer side of the telescopic body (21), and the other end is anchored in the corner cutout (25).

4. The multi-angle adjustment comb plate expansion joint for bridges of claim 2, wherein, The comb plates (22) of the opposite two telescopic bodies (21) are staggered with each other, and a gap is left between the two adjacent comb plates (22).

5. The multi-angle adjustment comb plate expansion joint for bridges of claim 2, wherein, A plurality of inverted U-shaped embedded anchoring bars (111) and horizontal connecting support bars (112) are provided in the reservation groove (11), the inverted U-shaped embedded anchoring bars (111) are embedded in the reservation groove (11), the top ends of the U-shaped embedded bars (24) and the inverted U-shaped embedded anchoring bars (111) are aligned and spaced apart, the horizontal connecting support bars (112) penetrate all the inverted U-shaped embedded anchoring bars (111) and the U-shaped embedded bars (24), and the U-shaped embedded bars (24) of the telescopic body (21) are welded and connected with the inverted U-shaped embedded anchoring bars (111) through the horizontal connecting support bars (112).

6. The multi-angle adjustment comb plate expansion joint for bridges of claim 1, wherein, The multi-angle deformation adjusting device (3) includes two oppositely arranged angle deformation displacement bins (31) and a displacement slide rail (32), the two angle deformation displacement bins (31) are connected through the displacement slide rail (32), the two angle deformation displacement bins (31) are respectively connected with the bottom of the beam body ends (1) on both sides, and the displacement slide rail (32) can be freely rotated and moved in multiple angles and multiple directions.

7. The multi-angle adjustment comb plate expansion joint for bridges of claim 6, wherein, The two sides of the displacement slide rail (32) are respectively provided with fixed side plates (33) for limiting, damping springs (34) are provided between the two fixed side plates (33) on the same side, and the angle of the end part of the displacement slide rail (32) can be changed in the angle deformation displacement bin (31).

8. The multi-angle adjustment comb plate expansion joint for bridges of claim 6, wherein, The angle deformation displacement bin (31) is internally provided with a sliding block (311), the middle part of the two sides of the sliding block (311) is symmetrically provided with a lateral guide rail (312), the middle part of the inner wall of the angle deformation displacement bin (31) is provided with a displacement clamping groove (313) matched with the lateral guide rail (312), the sliding block (311) can freely stretch and contract and move in the angle deformation displacement bin (31) through the lateral guide rail (312) and the displacement clamping groove (313), the end of the displacement sliding rail (32) is provided with a direction sphere (321), the side of the sliding block (311) close to the direction sphere (321) is provided with a ball hole bin (322), the angle of the displacement sliding rail (32) is freely adjusted in the sliding block (311) through the direction sphere (321), and the inner wall of the ball hole bin (322) is provided with an elastic rubber layer.

9. The multi-angle adjustment comb plate expansion joint for bridges of claim 1, wherein, The bridge expansion joint (12) is internally provided with an expansion water guide sealing band (4) in the vertical direction along the bridge center line, and the two sides of the expansion water guide sealing band (4) are respectively fixed on the surface of the reserved groove (11).

10. The multi-angle adjustment comb plate expansion joint for bridges of claim 9, wherein, The surface of the reserved groove (11) is provided with a pressing strip (41), and the pressing strip (41) is fixed with the expansion water guide sealing band (4) through bolts (42).

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