CN117306382A - Bridge expansion joint structure capable of adapting to beam deflection - Google Patents

Abstract

The invention discloses a bridge expansion joint structure capable of adapting to beam body deflection, wherein a span joint comb plate and/or a fixed comb plate is/are arranged on a beam body where the span joint comb plate and/or the fixed comb plate are/is in a floating support by means of a floating support device, so that the comb plate has better independence and forms relative adaptability independent of the beam body, thereby being capable of well adapting to the vertical and horizontal deformation of the beam end of the beam body, being capable of well reducing the deformation or displacement of the comb plate of the bridge expansion joint structure relative to the transverse and vertical torsional deformation of the beam end of the beam body, ensuring that the movable comb plate and the fixed comb plate can always have a good connection state, further avoiding the damage of the bridge expansion joint device caused by the deformation of the beam end of the beam body, and ensuring the safe and smooth passing of a vehicle.

Description

Bridge expansion joint structure capable of adapting to beam deflection

Technical Field

The invention relates to the technical field of bridge expansion joints, in particular to a bridge expansion joint structure capable of adapting to beam body deflection.

Background

The bridge expansion joint device is a telescopic device arranged between two beam ends, between a beam end and a bridge abutment or at a hinge position of a bridge in order to meet the requirement of bridge deck deformation, and aims to regulate structural displacement caused by vehicle load and bridge building materials. The expansion joint device is required to be capable of freely expanding and contracting in the longitudinal direction of the bridge, and the vehicle is required to run smoothly without sudden jump and noise. The existing bridge expansion joint device comprises a comb plate expansion joint device and a module expansion joint device, wherein the comb plate expansion joint device is mainly applied to a small-span bridge due to the fact that the expansion range is smaller, and the module expansion joint device is larger in expansion range and mainly applied to a large-span bridge.

The invention is mainly aimed at improving the comb plate type expansion joint device. The conventional comb plate type expansion joint device generally comprises a fixed comb plate and a movable comb plate, wherein the fixed comb plate is arranged on one side beam body, the movable comb plate is arranged on the other side beam body, the comb end of the movable comb plate spans the expansion joint between the two side beam bodies and is lapped on the other side beam body, and the comb teeth of the movable comb plate and the comb teeth of the fixed comb plate are arranged in a mutually spaced and crossed manner.

In the bridge, under the action of vehicle load and air temperature, the beam body can sometimes generate deflection deformation to enable the beam end to generate certain upwarp, and under the condition, the comb teeth and the plate body of the comb plate can also upwarp along with the situation, so that the comb plate type expansion joint device is damaged. In order to solve the problem, a rotationally connected comb plate structure is proposed in the prior art, for example, as disclosed in chinese patent CN2561814Y, the movable comb plate is configured by a movable plate body, a movable connecting plate and comb teeth, which are hinged in sequence, and by means of the hinge connection between the movable connecting plate and the movable plate body, and the hinge connection between the comb teeth and the movable connecting plate, the movable connecting plate and the movable plate body can rotate relatively when the movable plate body is tilted up along with the tilting up of the beam end of the beam body, so that the movable connecting plate and the comb teeth can still be flatly attached to the beam body. On this basis, chinese patent CN1333137C further discloses a connection structure of the whole movable comb plate and the beam body in a running fit, that is, when the beam body generates deflection deformation, and the beam end warps up or sinks, the movable comb plate and the beam body will rotate, so that the movable comb plate maintains a flat posture, the damage caused by the whole expansion joint device is avoided, and smooth passing of the vehicle is ensured.

Although the structure disclosed in the above patent can well solve the problem that the comb plate warps up along with the beam end, the structure cannot well meet the deformation requirement caused by transverse rotation angle or twisting deformation of the horizontal direction of the beam body. Specifically, the bridge is in actual use always, and the beam body can take place horizontal direction's horizontal corner and twist deformation under factors such as air temperature and wind-force to make movable fishback and fixed fishback place beam body place horizontal relative translation easily take place, in this case, fishback formula expansion joint device can be very easy because of the interval intersection setting between movable fishback and fixed fishback's the broach tooth, and the fracture produces.

In order to solve the above-mentioned problems, a bridge expansion joint device capable of simultaneously resisting transverse and vertical displacement is provided in the prior art, for example, as disclosed in chinese patent CN104074133a and chinese patent CN104358209B, a flexible connection is formed between a comb plate and a beam body by an elastically stretchable device, and deformation displacement caused by vertical rotation angle and/or transverse rotation angle of a beam end is adapted by means of shearing deformation of the elastically stretchable device. The elastic telescopic devices disclosed by the elastic telescopic device are all made of rubber materials or other high polymer materials, and the problems are that: is easy to work and fatigue, is easily influenced by the change of temperature or environmental humidity, and can easily generate a relaxation phenomenon under the action of long-time load, thereby causing work failure or failing to ensure the required work requirement. The rubber is mainly based on the difference of molecular structures and processing modes to realize the elasticity required by the working scene, but not based on the mechanical structure, so that under the structure of realizing the connection of the comb plate and the beam body by means of the elastic rubber expansion device, the comb plate and the beam body still keep certain follow-up property based on the connection characteristic of the rubber elastic device, namely, the comb plate still easily generates movement or deformation consistent with the beam body, and the relative adaptive displacement of the comb plate relative to the beam body is not smooth and stable.

Based on the above, it is necessary to relate to a bridge expansion joint installation structure based on a mechanical structure form, which not only has a longer service life and is not easy to fail, but also can enable the comb plate to have relative adaptability independent of a beam body.

Disclosure of Invention

In view of the above, the invention provides a bridge expansion joint structure capable of adapting to displacement of a beam body, which not only has longer service life and is not easy to fail, but also can enable the comb plate to have relative adaptability independent of the beam body, so that the bridge expansion joint structure can well adapt to vertical and transverse deformation of the beam end of the beam body, and can well reduce deformation or displacement of the comb plate relative to transverse and vertical torsional deformation of the beam end of the beam body, thereby ensuring that the movable comb plate and the fixed comb plate can always have good connection states, further avoiding damage to a bridge expansion joint device caused by deformation of the beam end of the beam body, and ensuring smooth and safe passing of vehicles.

The invention discloses a bridge expansion joint structure capable of adapting to beam body deflection, which comprises a fixed comb plate and a seam-crossing comb plate which are respectively arranged on two side beam bodies of the bridge expansion joint, wherein the seam-crossing comb plate forwards crosses the bridge expansion joint from the beam body where the seam-crossing comb plate is positioned and the tail end of the seam-crossing comb plate is positioned on the other opposite side beam body, and comb teeth at the tail end of a movable comb plate and comb teeth of the fixed comb plate are arranged at an intersecting interval; the crossing interval is a structure that the fixed comb plate and the comb teeth of the seam crossing comb plate are in finger-shaped mutual crossing, and the seam crossing comb plate is a movable comb plate relative to the fixed comb plate, namely the seam crossing comb plate can move relative to the fixed comb plate and the beam body where the fixed comb plate is located along with the displacement of the beam body in the longitudinal direction. The invention is characterized in that the invention also comprises a floating support device, and the seam crossing comb plate and/or the fixed comb plate are/is arranged on the beam body where the floating support device is arranged in a floating manner. In one embodiment the slot-crossing comb plate is floatingly supported on the beam body where it is located by means of a floating support means, in another embodiment the stationary comb plate is floatingly supported on the beam body where it is located by means of a floating support means, in a preferred embodiment the slot-crossing comb plate and the stationary comb plate are correspondingly supported on the respective beam body by means of a floating support means, respectively. The floating support device can be a plurality of floating support devices which are arranged along the length direction of the seam crossing comb plate or the fixed comb plate (namely the transverse horizontal direction of the bridge beam body) so that the corresponding comb plate is stably supported and arranged on the corresponding beam body.

The floating support means that the corresponding comb plate floats on the corresponding beam body by means of elastic supporting force, so that relative independence is achieved between the beam body and the corresponding comb plate, vibration energy or movable displacement can be dissipated or counteracted by means of a floating supporting device located between the comb plate and the beam body, transmission of vibration energy to the beam body caused by travelling crane to the comb plate is reduced, the comb plate has good structural independence relative to the beam body, vertical and transverse deformation of the beam end of the beam body can be well adapted, and deformation or displacement of the comb plate can be well reduced relative to transverse and vertical torsional deformation of the beam end of the beam body.

According to the bridge expansion joint structure capable of adapting to beam deflection, the floating support device comprises a base body, a connecting member and a support assembly, wherein the base body is fixedly connected with Liang Tixing, the base body is provided with a middle cavity, and the connecting member comprises a connecting plate for forming connection with a corresponding comb plate and a floating rod extending into the middle cavity from top to bottom; the support assemblies are arranged in at least two groups along the circumferential direction of the base body, a transverse telescopic channel is arranged on the base body corresponding to each support assembly, the support assemblies are transversely arranged in the corresponding transverse telescopic channels along the base body in an elastically telescopic mode, and each support assembly extends towards the middle concave cavity and keeps constant contact with the floating rod piece; in the initial state, the floating rod is supported in the middle cavity in a floating way by means of the transverse elastic supporting force of the supporting component, a transverse movement allowance and a vertical movement allowance which can move relatively are arranged between the floating rod and the base, and when the base and the floating rod move transversely and/or vertically relatively, at least one of the supporting components can be compressed, so that the base and the floating rod can adapt to the relative movement between the base and the floating rod.

In the above structure, the connection plate is used for being connected with the corresponding comb plate, that is, the corresponding comb plate is mounted on the connection plate, the floating rod piece located below the connection plate extends downwards and stretches into the middle cavity of the seat body, the support assemblies are arranged in multiple groups in the circumferential direction of the seat body, each group is arranged in the transverse direction (also called radial direction in the case of a cylindrical structure of the seat body) of the seat body, and the end part close to the middle cavity stretches into the middle cavity. In the invention, each supporting component provides transverse supporting force for the floating rod, and the floating rod is supported in the middle cavity in a floating way by means of the transverse supporting force of the plurality of groups of supporting components.

According to the bridge expansion joint structure capable of adapting to beam deflection, the floating rod is provided with the lower body matched with the supporting component, the lower body of the floating rod is provided with the concave peripheral side surface in the circumferential direction, and the vertical section of the concave peripheral side surface is arc-shaped; the support assembly comprises a support head and a spring piece, the spring piece is arranged at the bottom of the transverse telescopic channel, one end of the support head is propped against the spring piece in the transverse telescopic channel, the other end of the support head extends towards the middle concave cavity direction and stretches out of the transverse telescopic channel, and the stretching end of the support head keeps constant contact with the corresponding position of the inner concave peripheral side surface of the floating rod piece and has friction force; in the initial state, the spring member has a pressing force to the supporting head in a direction toward the middle cavity, so that the floating rod member can be floatingly supported in the middle cavity.

Specifically, in the initial state, the end portion of the support head of the support assembly is supported at an arc-shaped bottom position fitted to the concave cylindrical side surface, that is, at a vertically middle position of the concave circumferential side surface. When the beam end of the beam body generates vertical deformation displacement, the seat body can generate relative movement by means of the cooperation of the supporting head of the supporting component and the concave circumferential side surface of the lower body of the floating rod, wherein the supporting head can move upwards or downwards along the vertical track of the concave circumferential side surface, and the vertical section of the concave circumferential side surface is arc-shaped, so that the supporting head is pressed into the transverse telescopic channel in the process that the supporting head moves upwards or downwards along the vertical track due to the vertical deformation of the beam body, the spring piece is compressed, the supporting head is pressed against the outer side of the lower body of the floating rod under the reaction generated by the pressing of the spring piece, and in the process, the floating rod generates very little vertical displacement relative to the displacement of the beam body or even no vertical displacement, so that the floating rod cannot generate displacement due to the vertical displacement of the beam body, and the flatness of the corresponding comb plate is ensured.

When the beam body generates transverse displacement in the width direction of the bridge beam body, the supporting head of the supporting component is matched and abutted against the concave circumferential side surface of the lower body of the floating rod piece, so that when the seat body generates transverse displacement along with the beam body, the supporting component in the displacement direction is compressed, and the other supporting components which are symmetrically arranged are elongated, thereby providing possibility for the relative movement of the seat body relative to the floating rod piece; in the process, the floating rod piece can not generate deflection due to the deflection of the beam body, so that the flatness of the corresponding comb plate is ensured. Moreover, by means of the cooperation of the concave circumferential side surface of the lower body and the supporting head of the supporting component, even when the beam body is tilted upwards, the seat body and the floating rod piece can relatively move, and the corresponding comb plate is prevented from tilting upwards along with the tilting of the beam body.

In addition, the floating support device can also play a good vibration isolation role, namely, when the comb plate generates vibration energy due to running of a vehicle, the vibration energy can be well dissipated by means of the auxiliary support assembly, specifically, the vibration energy is dissipated by means of the spring piece of the support assembly, and therefore damage to the beam body caused by the fact that vibration is transmitted to the beam body is avoided.

According to the bridge expansion joint structure capable of adapting to beam deflection, the extending end of the supporting head is of a round head structure. By means of the round head structure of the supporting head, the supporting head can be effectively ensured to move up and down along the inner concave peripheral side surface of the lower body of the floating rod piece, or the lower body of the floating rod piece can move up and down relative to the supporting head.

The bridge expansion joint structure capable of adapting to beam deflection further comprises a vertical support piece, wherein the vertical support piece forms vertical elastic support on the floating rod piece from the bottom of the floating rod piece in the middle cavity. The vertical support provides further floating support force for the floating rod member, and can work together with the support assembly when the beam body is vertically displaced to resist the transmission of the beam body vertical displacement to the corresponding comb plate.

According to the bridge expansion joint structure capable of adapting to beam deflection, the vertical support piece is a conical spring. By means of the variable pitch structure of the conical spring, a good vertical floating supporting force is provided for the floating rod piece.

According to the bridge expansion joint structure capable of adapting to the displacement of the beam body, the joint plate and the elastic joint belt are further arranged between the end part of the joint comb plate and the beam body where the joint comb plate is located in the horizontal direction, and the joint plate clamps the elastic joint belt between the joint plate and the end part of the joint comb plate in a mode of having downward pressure on the end part of the joint comb plate. The joint plate and the elastic joint belt provide certain pressure for the end part of the seam crossing comb plate so as to prevent the end part of the seam crossing comb plate from tilting, and the elastic joint belt provides elasticity for movement, so that the end part of the seam crossing comb plate has certain mobility while being pressed.

According to the bridge expansion joint structure capable of adapting to beam deflection, the elastic joint belt comprises the first vertical section and the transverse section which form an L shape, the end part of the joint comb plate is provided with the L-shaped bearing platform for bearing the L-shaped section, the first vertical section is clamped between the horizontal side surface of the joint plate and the vertical side wall of the L-shaped bearing platform, and the transverse section is clamped between the bottom side surface of the joint plate and the bottom side wall of the L-shaped bearing platform.

According to the bridge expansion joint structure capable of adapting to the deflection of the beam body, the beam body is provided with the concrete layer, and the connecting plate is connected to the concrete layer by means of the elastic damping device.

According to the bridge expansion joint structure capable of adapting to the deflection of the beam body, the elastic damping device comprises a shell, a rubber damping body arranged in the shell and a connecting piece, wherein one end of the connecting piece is embedded in the rubber damping body, and the other end of the connecting piece extends out of the shell to be fixedly connected with the connecting plate.

The beneficial effects are that: in the bridge expansion joint structure capable of adapting to beam deflection, the span joint comb plate and/or the fixed comb plate are/is arranged on the beam body where the span joint comb plate and/or the fixed comb plate are arranged in a floating mode by means of the floating supporting device, so that the comb plate has good independence and relative adaptability independent of the beam body, vertical and transverse deformation of the beam end of the beam body can be well adapted, deformation or displacement of the comb plate of the bridge expansion joint structure can be well reduced relative to transverse and vertical torsional deformation of the beam end of the beam body, the movable comb plate and the fixed comb plate can be guaranteed to have good connection states all the time, damage to the bridge expansion joint device caused by deformation of the beam end of the beam body is avoided, and smooth and safe passing of vehicles is guaranteed.

The bridge expansion joint structure capable of adapting to beam deflection of the invention is disclosed in detail below with reference numerals in combination with the embodiments shown in the drawings.

Drawings

Fig. 1 shows a schematic overall structure of the present invention.

Fig. 2 is an enlarged view of fig. 1A.

Reference numerals

1. A beam body; 2. fixing the comb plate; 3. a seam crossing comb plate; 4. comb teeth; 5. a base; 6. a middle concave cavity; 7. a connecting plate; 8. a floating rod member; 9. a transverse telescopic channel; 10. concave peripheral sides; 11. a support head; 12. a spring member; 13. a plug; 14. a vertical support; 15. a splice plate; 16. an elastic engagement belt; 17. a concrete layer; 18. an elastic vibration damper; 19. a lower body; 20. embedding reinforcing steel bars; 21. an upper cover; 22. a horizontal gap; 23. a dustproof water stop; 24. a bolt member; 25 a housing tube.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the embodiments of the present invention, all directional indicators (such as up, down, left, right, front, and rear … …) are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present invention.

FIG. 1 shows a schematic overall junction view of a bridge expansion joint construction of the present invention capable of accommodating beam deflection. Fig. 2 is an enlarged view of fig. 1A. The invention discloses a bridge expansion joint structure capable of adapting to beam body deflection, which is shown in fig. 1 and 2, and comprises a fixed comb plate 2 and a joint-crossing comb plate 3 which are respectively arranged on two side beam bodies 1 of the bridge expansion joint, wherein the joint-crossing comb plate 3 forwards crosses the bridge expansion joint from the beam body 1 where the joint-crossing comb plate is positioned and the tail end of the joint-crossing comb plate is positioned on the other opposite side beam body 1, and comb teeth 4 at the tail end of the joint-crossing comb plate 3 are mutually crossed and arranged with all comb teeth of the fixed comb plate 2 at intervals. Specifically, the fixed comb plate 2 is mounted on one side beam body 1, the movable comb plate is mounted on the other side beam body 1, and the comb teeth end of the movable comb plate spans the expansion joint between the two side beam bodies 1 and is lapped on the other side beam body 1, the seam-spanning comb plate 3 is the movable comb plate relative to the fixed comb plate 2, that is, the seam-spanning comb plate 3 can relatively move relative to the fixed comb plate 2 and the beam body 1 where the fixed comb plate 2 is located along with the displacement of the beam body 1 in the longitudinal direction. In addition, a dustproof water stop belt 23 is arranged at the expansion joint between the two side beam bodies 1.

As shown in connection with fig. 1 and 2, the present invention is characterized by further comprising a floating support means by means of which the cross-slit comb plate 3 is floatingly supported mounted on the beam body 1 where it is located. Of course, it will also be appreciated by those skilled in the art that the fixed comb plate 2 can also be arranged to be floatingly supported by means of a floating support means mounted on the beam 1 where it is located, according to the solution disclosed in the embodiments of the invention. The floating support device can be a plurality of floating support devices which are arranged along the length direction of the seam crossing comb plate (namely the transverse horizontal direction of the bridge beam body) so that the corresponding comb plate is stably supported and arranged on the corresponding beam body.

In the embodiment of the invention, the floating support device comprises a base body 5, a connecting member and a support assembly, wherein the base body 5 is used for forming fixed connection with the beam body 1, the base body 5 is provided with a middle cavity 6, the connecting member comprises a connecting plate 7 used for forming connection with a corresponding comb plate and a floating rod piece 8 extending into the middle cavity 6 from top to bottom; at least two groups of support assemblies are arranged along the circumferential direction of the seat body 5, a transverse telescopic channel 9 is arranged on the seat body 5 corresponding to each support assembly, the support assemblies are transversely arranged in the corresponding transverse telescopic channels 9 along the seat body 5 in a mode of being capable of elastically telescopic, and each support assembly extends towards the middle concave cavity 6 and keeps constant contact with the floating rod piece 8; in the initial state, the floating rod 8 is floatingly supported in the middle cavity 6 by means of the lateral elastic supporting force of the supporting component, a lateral movement allowance and a vertical movement allowance which can relatively move are arranged between the floating rod 8 and the base 5, and when the base 5 and the floating rod 8 generate lateral relative movement and/or vertical relative movement, at least one of the supporting components can be compressed, so that the base 5 and the floating rod 8 can adapt to the relative movement.

When the corresponding comb plate is installed, a concrete layer 17 is poured on the corresponding beam body 1, an outer shell cylinder 25 embedded in the concrete layer 17 and provided with an opening at the upper part is arranged on the concrete layer 17, the floating support assembly is arranged in the outer shell cylinder 25 during installation, and the seat body 5 can form fixed connection with the embedded steel bars 20 embedded on the beam body 1 by means of the bolt pieces 24, so that the seat body 5 of the floating support assembly can be displaced along with the displacement of the cylinder beam body 1.

In the present invention, the connecting plate 7 has a plate-like structure, and is fixedly connected to the across-slit comb plate 3 by bolts. The floating bar 8 is composed of two parts, one part is a rod-shaped section located in the upper body, the other part is a cylindrical section forming the lower body 19, and the upper body passes through and protrudes from the upper cover 21 of the seat 5 and is fixedly connected with the connecting plate 7 by screws. A horizontal gap 22 is formed between the upper body of the floating rod 8 and the through hole of the upper cover 21, and a horizontal gap is also formed between the lower body 19 and the side wall of the middle cavity 6 of the base 5, so that a horizontal movement allowance is formed between the base 5 and the floating rod 8, and similarly, vertical gaps are formed between the upper side surface of the lower body 19 of the floating rod 8 and the upper cover 21, and between the lower bottom surface and the bottom of the middle cavity 6, so that a vertical movement allowance is formed between the base 5 and the floating rod 8.

In the embodiment of the invention, the floating rod 8 is provided with a lower body 19 matched with the supporting component, the lower body 19 of the floating rod 8 is provided with an inner concave peripheral side surface 10 in the circumferential direction, and the vertical section of the inner concave peripheral side surface 10 is arc-shaped; the support assembly comprises a support head 11 and a spring piece 12, the bottom of the transverse telescopic channel 9 is blocked by a plug 13, the spring piece 12 is arranged at the bottom of the transverse telescopic channel 9 and is abutted against the plug 13, one end of the support head 11 is abutted against the spring piece 12 in the transverse telescopic channel 9, the other end extends towards the middle concave cavity 6 and extends out of the transverse telescopic channel 9, and the extending end of the support head 11 is kept in constant contact with the corresponding position of the inner concave peripheral side surface 10 of the floating rod piece 8 and has friction force; in the initial state, the spring member 12 has a pressing force against the support head 11 in a direction toward the middle cavity 6, so that the floating rod member 8 can be floatingly supported in the middle cavity 6.

In the embodiment of the present invention, the protruding end of the supporting head 11 has a rounded structure.

In an embodiment of the invention, it further comprises a vertical support 14, the vertical support 14 forming a vertical elastic support for the floating bar 8 from the bottom of the floating bar 8 within the central cavity 6. The vertical support 14 is a conical spring.

In the embodiment of the invention, a joint plate 15 and an elastic joint belt 16 are further arranged between the end of the seam crossing comb plate 3 and the beam body 1 where the joint plate 15 is positioned in the horizontal direction, and the joint plate 15 clamps the elastic joint belt 16 between the joint plate 15 and the end of the seam crossing comb plate 3 in a manner of having downward pressure on the end of the seam crossing comb plate 3. The joint plate 15 and the elastic joint belt 16 provide a certain pressure for the end part of the seam crossing comb plate 3 so as to prevent the end part of the seam crossing comb plate 3 from tilting, and the elastic joint belt 16 provides elasticity for movement, so that the end part of the seam crossing comb plate 3 has a certain mobility while being pressed.

In the embodiment of the invention, the elastic joint band 16 comprises a first vertical section and a transverse section forming an L shape, an L-shaped bearing platform for bearing the L-shaped section is arranged at the end of the cross-seam comb plate 3, the first vertical section is clamped between the horizontal side surface of the joint plate 15 and the vertical side wall of the L-shaped bearing platform, and the transverse section is clamped between the bottom side surface of the joint plate 15 and the bottom side wall of the L-shaped bearing platform. In this embodiment, the resilient engagement strip 16 is a Z-shaped structure comprising an L-shaped section and a second vertical section connected to the end of the transverse section in the L-shaped section, the second vertical section extending downwardly and ending in a resilient support against the concrete layer 17.

In the embodiment of the invention the adapter plate 15 is attached to the concrete layer 17 by means of elastic damping means 18. The elastic damper 18 includes a housing, a rubber damper body built in the housing, and a connecting member having one end embedded in the rubber damper body and the other end extending out of the housing for fixed connection with the engagement plate 15. The rubber vibration damper is made of the existing rubber material, has certain elasticity and has horizontal shearing force. By means of the elastic vibration damper 18, the joint plate 15 can be well pressed against the end part of the seam crossing comb plate 3, and by means of the elastic vibration damper 18, when the beam body 1 is displaced, the seam crossing joint plate 15 can resist the movement energy brought by displacement of the beam body 1 by means of the shearing force of the rubber vibration damper, so that good pressing against the seam crossing comb plate 3 is ensured, and further the horizontal flatness of the seam crossing comb plate 3 is ensured.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Claims (10)

1. The bridge expansion joint structure capable of adapting to displacement of a beam body comprises a fixed comb plate (2) and a joint-crossing comb plate (3) which are respectively arranged on two side beam bodies (1) of the bridge expansion joint, wherein the joint-crossing comb plate (3) forwards crosses the bridge expansion joint from the beam body (1) where the joint-crossing comb plate is positioned and the tail end of the joint-crossing comb plate is positioned on the other opposite side beam body (1), and comb teeth at the tail end of the joint-crossing comb plate (3) and comb teeth (4) of the fixed comb plate (2) are arranged at an interval in a crossing way;

it is characterized in that the method comprises the steps of,

the device also comprises a floating support device, wherein the seam crossing comb plate (3) and/or the fixed comb plate (2) are/is arranged on the beam body (1) where the seam crossing comb plate is arranged in a floating manner by means of the floating support device.

2. The bridge expansion joint structure which can adapt to the deflection of the beam body according to claim 1, wherein,

the floating support device includes:

the base body (5), the base body (5) is used for forming fixed connection with the beam body (1), and the base body (5) is provided with a middle concave cavity (6);

a connecting member including a connecting plate (7) for forming a connection with the corresponding comb plate and a floating bar (8) extending into the middle cavity (6) from top to bottom;

the support assemblies are arranged along the circumferential direction of the base body (5), each support assembly is provided with a transverse telescopic channel (9) corresponding to each support assembly on the base body (5), each support assembly is transversely arranged in the corresponding transverse telescopic channel (9) along the base body (5) in a mode of being capable of elastically telescopic, and each support assembly extends towards the middle cavity and keeps constant contact with the floating rod piece (8);

in an initial state, the floating rod (8) is floatingly supported in the middle cavity (6) by means of a transverse elastic supporting force of the supporting component, a transverse movement allowance and a vertical movement allowance which can relatively move are arranged between the floating rod (8) and the base (5), and when the base (5) and the floating rod (8) generate transverse relative movement and/or vertical relative movement, at least one of the supporting components can be compressed, so that the base (5) and the floating rod (8) can adapt to the relative movement between the base and the floating rod.

3. The bridge expansion joint structure which can adapt to the deflection of the beam body according to claim 2, wherein,

the lower body (19) of the floating rod piece (8) is provided with an inner concave peripheral side surface (10) in the circumferential direction, and the vertical section of the inner concave peripheral side surface (10) is arc-shaped;

the supporting assembly comprises a supporting head (11) and a supporting head (12), the spring piece (12) is arranged at the bottom of the transverse telescopic channel (9), one end of the supporting head (11) is abutted against the spring piece (12) in the transverse telescopic channel (9), the other end of the supporting head extends towards the middle cavity direction and extends out of the transverse telescopic channel (9), and the extending end of the supporting head (11) is kept in constant contact with the corresponding position of the inner concave peripheral side surface (10) of the floating rod piece (8) and has friction force;

in the initial state, the spring element (12) has a pressing force on the support head (11) in the direction of the central cavity (6), so that the floating rod element (8) can be supported in a floating manner in the central cavity (6).

4. A bridge expansion joint structure capable of adapting to beam deflection according to claim 3, characterized in that the extending end of the supporting head (11) is a round head structure.

5. Bridge expansion joint construction capable of adapting to beam deflection according to any of claims 1-4, further comprising a vertical support (14), said vertical support (14) forming a vertical elastic support for the floating rod (8) from the bottom of the floating rod (8) within the central cavity (6).

6. Bridge expansion joint construction capable of adapting to beam deflection according to claim 5, characterized in that the vertical support (14) is a conical spring.

7. Bridge expansion joint construction capable of adapting to beam deflection according to claim 5, characterized in that in the horizontal direction, a joint plate (15) and an elastic joint band (16) are further provided between the end of the seam crossing comb plate (3) and the beam body (1) where it is located, the joint plate (15) clamping the elastic joint band (16) between the joint plate (15) and the end of the seam crossing comb plate (3) with a downward pressure on the end of the seam crossing comb plate (3).

8. Bridge expansion joint construction capable of adapting to beam deflection according to claim 7, characterized in that the elastic joint strip comprises a first vertical section forming an L-shape and a transverse section, the end of the joint comb plate (3) is provided with an L-shaped abutment receiving the L-shaped section, the first vertical section is clamped between the horizontal side of the joint plate (15) and the vertical side wall of the L-shaped abutment, and the transverse section is clamped between the bottom side of the joint plate (15) and the bottom side wall of the L-shaped abutment.

9. Bridge expansion joint construction capable of adapting to beam deflection according to claim 8, characterized in that the beam body (1) is provided with a concrete layer (17), the adapter plate (15) being connected to the concrete layer (17) by means of elastic damping means (18).

10. Bridge expansion joint construction capable of adapting to beam deflection according to claim 9, characterized in that the elastic damping device (18) comprises a housing, a rubber damping body built in the housing and a connecting piece with one end embedded in the rubber damping body and the other end extending out of the housing for fixed connection with the adapter plate (15).