CN110424259B

CN110424259B - Bridge damping expansion joint device capable of being automatically closed

Info

Publication number: CN110424259B
Application number: CN201910718063.3A
Authority: CN
Inventors: 王文霞; 陈柯; 贾伟卿
Original assignee: Luoyang Traffic Engineering Quality Supervision Station
Current assignee: Luoyang Traffic Engineering Quality Supervision Station
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-12-22
Anticipated expiration: 2039-08-05
Also published as: CN110424259A

Abstract

The invention belongs to the technical field of bridge structures, and particularly relates to a bridge damping expansion joint device capable of being automatically closed, which comprises a bridge body, a fixed connector and a damping assembly, wherein the bridge body and the fixed connector are fixedly wrapped at the end part of the bridge body, the damping assembly comprises a transverse connecting plate, a bent angle plate, a longitudinal connecting plate, a damping spring, damping rubber and a damping connecting rod, the fixed connector is fixedly wrapped at the end part of the bridge body, two groups of the fixed connector and the damping assembly are symmetrically distributed between two adjacent bridge bodies and are attached together, top elastic rubber is arranged between the two damping rubbers, and bottom corners of the two fixed connectors are connected through bottom elastic rubber. The bridge vibration expansion joint device provided by the invention comprises a damping structure device capable of bearing pressure in an inclined direction, and can be used for complying with the pressure in the inclined direction generated by a bridge expansion joint in the running process of heavy objects such as vehicles.

Description

Bridge damping expansion joint device capable of being automatically closed

Technical Field

The invention belongs to the technical field of bridge structures, and particularly relates to a bridge damping expansion joint device capable of being automatically closed.

Background

The bridge expansion joint is an expansion joint structure designed for meeting the requirement of bridge deck deformation, is used for enabling vehicles to smoothly pass through, and can adapt to certain stress variation. Common bridge expansion joints are located at the end parts of two sections of bridge bodies, and in order to ensure the damping effect between the two sections of bridge bodies, most of the prior art adopts a longitudinal damping structure capable of bearing longitudinal pressure or a transverse damping structure capable of bearing transverse extrusion force. For example, chinese patent CN 208266680U discloses a shock-absorbing expansion joint device for railroad bridges, which uses longitudinally arranged longitudinal shock-absorbing springs and transversely arranged shock-absorbing rubber strips to bear the transverse pressure and the longitudinal pressure applied to the bridge. For example, in chinese patent CN108487053A, the transverse deformation of the elastic shock absorber is used to bear the transverse pressure, the longitudinal deformation of the expansion plate is used to bear the longitudinal pressure, and the rubber water stop pad and the automatic closing mechanism are used to ensure the waterproof effect and reduce the vibration.

Although the expansion joint structure in the prior art can achieve certain shock absorption and stress resistance effects, the device for bearing pressure is a longitudinal shock absorption structure or a transverse shock absorption structure. In the actual process of running heavy objects such as vehicles, the directions of pressure and friction force generated by the rotation of the wheel hubs are changed, and the pressure and the friction force are not only downward directly, and particularly for slope or arched bridges, the pressure generated by the running process of the heavy objects such as vehicles on bridge expansion joints is often inclined. It is therefore necessary to develop a new bridge expansion joint installation which incorporates a shock absorbing structural arrangement capable of withstanding pressure in an oblique direction.

Disclosure of Invention

The invention aims to provide a bridge shock absorption expansion joint device capable of automatically closing, which comprises a shock absorption structure device capable of bearing pressure in an inclined direction and can conform to the pressure in the inclined direction generated by a vehicle and other heavy objects in the process of running on the bridge expansion joint.

The invention provides an automatic-closing bridge damping expansion joint device which comprises a bridge body, a fixed connector and a damping assembly, wherein the bridge body, the fixed connector and the damping assembly are installed in a one-to-one combination mode, and the number of the fixed connector, the fixed connector and the damping assembly is two; every group the bridge body fixed connector with damper unit's connected mode as follows: the fixed connector is fixedly wrapped at the end part of the bridge body, the damping assembly comprises a transverse connecting plate, a corner plate, a longitudinal connecting plate, a damping spring, damping rubber and a damping connecting rod, the transverse connecting plate, the corner plate and the longitudinal connecting plate are sequentially connected to form a damping plate capable of wrapping the vertex angle of the fixed connector, the damping connecting rods are arranged between the transverse connecting plate and the fixed connector and between the longitudinal connecting plate and the fixed connector, the damping spring is arranged between the corner plate and the fixed connector, and the damping rubber is fixedly connected to the outer wall of the corner plate;

two sets of fixed connector with damper assembly symmetric distribution is between two adjacent bridge bodies, and two can partially the laminating be in the same place between the yielding rubber, still be provided with top elastic rubber between two yielding rubber, top elastic rubber's upper surface bridge body upper surface and transverse connection plate's upper surface flush, two connect through bottom elastic rubber between fixed connector's the base angle.

Preferably, the number of the damping springs of the bridge damping expansion joint device capable of being automatically closed is at least three, and at least one damping spring is distributed in the longitudinal direction, the inclined direction and the transverse direction.

Preferably, the automatically-closed bridge damping expansion joint device further comprises a top trapezoidal stress guide plate, a top stress bearing plate and top auxiliary elastic rubber, wherein the top trapezoidal stress guide plate is obliquely arranged and is installed at one end, far away from the top angle, of the top of the fixed connecting head; surface mounting is gone up to the bridge body fixed connection head department has seted up sunken mouthful, the degree of depth of sunken mouthful equals top trapezoidal stress deflector top arrives the distance of sunken mouthful bottom, top stress accepts the board and connects transverse connection board is close to the one end of top trapezoidal stress deflector, the inclined plane of top trapezoidal stress deflector with stress accepts and connects through the supplementary elastic rubber in top between the board.

Preferably, in the above-mentioned bridge damping expansion joint device capable of automatically closing, the top stress receiving plate is parallel to the inclined plane of the top trapezoidal stress guide plate.

Preferably, in the above device for damping an expansion joint of a bridge, which can be automatically closed, a distance of 1-5mm is left between the bottom end of the top trapezoidal stress guide plate and the top of the fixed connector.

Preferably, but above-mentioned automatic closed bridge shock attenuation expansion joint device, damper still includes the trapezoidal stress deflector in bottom, bottom stress accept board and the supplementary elastic rubber in bottom, the trapezoidal stress deflector in bottom is located the below of longitudinal tie plate, and with fixed connector fixed connection, the bottom stress accepts the board and connects the bottom of longitudinal tie plate, the inclined plane of the trapezoidal stress deflector in bottom with connect through the supplementary elastic rubber in bottom between the longitudinal tie plate.

Preferably, in the above device for damping an expansion joint of a bridge capable of being automatically closed, the trapezoidal stress guide plate at the bottom is parallel to the inclined plane of the stress bearing plate at the bottom.

Preferably, but above-mentioned automatic closed bridge shock attenuation expansion joint device, fixed connection head is for the parcel is in the U-shaped fixed plate of this end of body of bridge, just the U-shaped fixed plate has and is located the first diaphragm of bridge body upper surface, be located the second diaphragm of bridge body lower surface and the vertical board of connecting first diaphragm and second diaphragm, vertical board fixed mounting be in on the terminal surface of this end of body of bridge.

Compared with the prior art, the bridge damping expansion joint device capable of being automatically closed provided by the invention at least has the following beneficial effects:

the end part of the bridge body is fastened through the fixed connector, so that the phenomena of structural looseness, cracks or scattered particle impurities caused by long-term abrasion of concrete, steel and the like at the end part of the bridge body are prevented; the fixed connector is used for providing a base for the arrangement of the damping assembly, and when the damping assembly deforms under pressure, the fixed connector is made of high-strength materials such as steel plates and the like, so that the pressure can be effectively borne, and a buffering effect is provided between the bridge body and the damping assembly; the vibration absorption assembly is used for bearing the transverse, longitudinal, bending and inclined pressures generated on the expansion joint when heavy objects such as automobiles and the like pass through the bridge, so that the multi-direction buffer effect is achieved, and the strain capacity of the expansion joint is improved.

Drawings

Fig. 1 is a schematic structural view of an automatically closable bridge damping expansion joint device according to embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 3 is a schematic structural view of an automatically closable bridge damping expansion joint device according to embodiment 2 of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention.

Detailed Description

The present invention will be described in detail with reference to specific embodiments, but it should be understood that the scope of the present invention is not limited by the specific embodiments.

Example 1

A kind of bridge damping expansion joint apparatus that can close automatically, as shown in figure 1, including the bridge body 1, fixed joint 2 and damping assembly, because the bridge expansion joint is established between two beam ends, between beam end and abutment or between the hinged position of the bridge, so the bridge body 1 of this embodiment is the bridge beam end or abutment.

The fixed connectors 2 and the shock absorption assemblies are installed in a one-to-one combined mode, the number of the fixed connectors 2 and the number of the shock absorption assemblies are two, one group of the fixed connectors 2 and the shock absorption assemblies are located at the end part of the bridge body 1 on the left side, and the other group of the fixed connectors 2 and the shock absorption assemblies are located at the end part of the bridge body 1; two sets of fixed connector 2 and damper assembly are used for connecting two bridge body 1, constitute the expansion joint structure that has automatic closing function and shock-absorbing function. Every bridge body 1, fixed connector 2 and damper of group's connected mode as follows: the fixed connector 2 is a U-shaped fixed plate wrapped at the end part of the bridge body 1, the U-shaped fixed plate is provided with a first transverse plate positioned on the upper surface of the bridge body 1, a second transverse plate positioned on the lower surface of the bridge body 1 and a longitudinal plate for connecting the first transverse plate and the second transverse plate, the longitudinal plate is fixedly arranged on the end surface of the end part of the bridge body 1, and the fixed connector 2 is made of a steel plate and is fixed on the bridge body 1 by adopting screws, bolts or glue; the damping component comprises a transverse connecting plate 3, a bent angle plate 4, a longitudinal connecting plate 5, a damping spring 6, damping rubber 7 and a damping connecting rod 8, the transverse connecting plate 3, the bent angle plate 4 and the longitudinal connecting plate 5 are sequentially connected to form the damping plate capable of wrapping a vertex angle of the fixed connector 2, the vertex angle refers to one corner of the end part and the top part of the bridge body 1 after the fixed connector 2 wraps the bridge body 1, so the damping connecting rod 8 is arranged between the transverse connecting plate 3 and a first transverse plate of the fixed connector 2 and between the longitudinal connecting plate 5 and a longitudinal plate of the fixed connector 2, one end of the damping connecting rod 8 is fixedly connected with the transverse connecting plate 3 or the longitudinal connecting plate 5, the other end of the damping connecting rod is fixedly connected with the longitudinal plate or the first transverse plate of the fixed connector 2, the damping connecting rod 8 can adopt damping rods in the prior art, and the damping spring 6, the end parts of the two ends of the damping spring 6 are respectively fixedly connected with the inner wall of the bent plate 4 and the fixed connector 2, and the damping rubber 7 is bonded or fixedly connected on the outer wall of the bent plate 4 through screws; the number of the damping springs 6 is at least three, and at least one damping spring is distributed in the longitudinal direction, the inclined direction and the transverse direction; the transverse connecting plate 3, the corner plate 4 and the longitudinal connecting plate 5 are all made of elastic steel plates; the two groups of fixed connectors 2 and the damping assemblies are symmetrically distributed between two adjacent bridge bodies 1, and when the bridge bodies 1 are in a natural state of equal weight pressure of an automobile, the two damping rubbers 7 can be partially attached together; after the two damping rubbers 7 are naturally attached, the area between the two damping rubbers 7 is filled by using the top elastic rubber 9, the top elastic rubber 9 and the two damping rubbers 7 are fixedly connected, a fixed connector 2 is installed on the upper surface of the end part of the bridge body 1, and a damping assembly is provided with a sunken opening, wherein the depth of the sunken opening is equal to the sum of the thickness of the transverse connecting plate 3 and the length of the damping connecting rod 8; the upper surface of the top elastic rubber 9 and the upper surface of the bridge body 1 are flush with the upper surface of the transverse connecting plate 3; the bottom corners of the two fixed connectors 2 are connected by bottom elastic rubber 91.

In the device of the embodiment 1, one function of the fixed connector 2 is used for fastening the end part of the bridge body 1 and preventing the phenomena of structural collapse, cracks or scattering particle impurities caused by long-term abrasion of concrete, steel and the like at the end part of the bridge body 1, the embodiment 1 adopts a U-shaped fixed plate structure, the wrapping area is large, the bottom and the top of the bridge body 1 can be protected, and the protection effect is better compared with that of a common right-angle structure; the other effect of fixed connector 2 is that the installation provides the base for damper, receives pressure and when producing deformation when damper, and fixed connector 2 adopts the big material of intensity such as steel sheet can effectively bear this kind of pressure, provides cushioning effect for between bridge body 1 and the damper. The main effect of damper assembly is the pressure that produces the expansion joint when being used for bearing heavy objects such as car and passing through the bridge, plays the cushioning effect, improves the strain capacity at expansion joint.

The working principle of the damping assembly is shown in fig. 2, when heavy objects such as automobiles pass through the bridge damping expansion joint device from left to right, the damping connecting rod 8 and the damping spring 6 move downwards or obliquely downwards under the action of gravity, and as the compression deformation capacity of the damping connecting rod 8 is smaller than that of the damping spring 6, the corner plate 4 makes a damping deformation trend of a circumferential track around the top angle of the fixed connector 2; when heavy objects such as automobiles travel to between two bent angle plates 4, the damping deformation of the circumference track is simultaneously made downwards by the two bent angle plates 4 and the two damping rubbers 7, meanwhile, the two damping rubbers 7 are both in a bent shape, and the two damping rubbers generate extrusion in the deformation process, the damping rubbers 7 not only have a buffering effect, but also can keep the closed state of an expansion joint, the waterproof effect is ensured, the top elastic rubber 9 is used for maintaining the tops of the two damping rubbers 7 to be relative planes, and the smooth passing of the heavy objects such as automobiles is facilitated.

Example 2

A bridge damping expansion joint device capable of being automatically closed is shown in figure 3 and comprises a bridge body 1, a fixed connector 2 and a damping component, wherein the structures and the connection modes of the bridge body 1 and the fixed connector 2 are the same as those of the embodiment 1. In embodiment 2, the damper assembly includes not only the transverse connecting plate 3, the corner plate 4, the longitudinal connecting plate 5, the damper spring 6, the damper rubber 7, and the damper link 8, but also the transverse connecting plate 3, the corner plate 4, the longitudinal connecting plate 5, the damper spring 6, the damper rubber 7, the damper link 8, and their connections with the fixed connector 2 are the same as in embodiment 1. In embodiment 2, the shock-absorbing assembly further includes a top trapezoidal stress guide plate 31, a top stress receiving plate 32 and a top auxiliary elastic rubber 33 on the basis of the structure of embodiment 1, the top trapezoidal stress guide plate 31 is installed at one end of the first transverse plate far from the second transverse plate, the top surface and the bottom surface of the top trapezoidal stress guide plate 31 are parallel, and an angle formed by the inclined surface of the top trapezoidal stress guide plate 31 and the first transverse plate is 30-120 degrees; the depth of a sunken opening formed in the position, where the fixed connector 2 is installed on the upper surface of the bridge body 1 is equal to the distance from the top of the top trapezoidal stress guide plate 31 to the bottom of the sunken opening; the top stress bearing plate 32 is connected to the end portion of the transverse connection plate 3 close to one end of the top trapezoidal stress guide plate 31 and parallel to the inclined plane of the top trapezoidal stress guide plate 31, the inclined plane of the top trapezoidal stress guide plate 31 is connected with the transverse connection plate 3 through the top auxiliary elastic rubber 33, and two surfaces of the top auxiliary elastic rubber 33 are respectively bonded with the inclined plane of the top trapezoidal stress guide plate 31 and the stress bearing plate 32 or fixedly connected through bolts.

In embodiment 2, in order to prolong the service life of the transverse connecting plate 3 and enhance the damping effect of the damping component, a top trapezoidal stress guide plate 31, a top stress receiving plate 32 and a top auxiliary elastic rubber 33 are provided, one end of the top trapezoidal stress guide plate 31 is connected with the recess of the bridge body 1 and is kept flush with the upper surface of the bridge body 1, the other end of the top trapezoidal stress guide plate 31 is connected with the stress receiving plate 32 through the top auxiliary elastic rubber 33, the stress receiving plate 32 can guide part of the pressure from the transverse connecting plate 3 to the top auxiliary elastic rubber 33, and then the pressure is buffered through the top auxiliary elastic rubber 33. The bottom end of the top trapezoidal stress guide plate 31 is preferably spaced 1-5mm from the first cross plate of the fixed connector 2, so that when the damping connecting rod 8 is compressed and deformed by pressure and drives the transverse connecting plate 3 to deform slightly downward, the distance of 1-5mm is enough to allow enough space for the stress receiving plate 32 to move downward.

Preferably, in embodiment 2, in order to further improve the damping effect and the stress resistance effect of the bridge vibration expansion joint device of the present invention, a bottom trapezoidal stress guide plate 34, a bottom stress receiving plate 35, and a bottom auxiliary elastic rubber 36 are further provided, the bottom trapezoidal stress guide plate 34 and the top trapezoidal stress guide plate 31 have the same structure, the bottom trapezoidal stress guide plate 34 is located below the longitudinal connecting plate 5, an inclined plane of the bottom trapezoidal stress guide plate 34 is disposed close to the longitudinal connecting plate 5, and two parallel surfaces are located on the side of the inclined plane; the bottom trapezoidal stress guide plate 34 is fixedly connected with the longitudinal plate of the fixed connector 2; the bottom stress bearing plate 35 is connected to the bottom end of the longitudinal connecting plate 5 and is parallel to the inclined plane of the bottom trapezoidal stress guide plate 34, the inclined plane of the bottom trapezoidal stress guide plate 34 is connected with the bottom stress bearing plate 35 through the bottom auxiliary elastic rubber 36, and two surfaces of the bottom auxiliary elastic rubber 36 are respectively bonded with the inclined plane of the bottom trapezoidal stress guide plate 34 and the longitudinal connecting plate 5 or fixedly connected through bolts.

The working principle among the bottom trapezoidal stress guide plate 34, the bottom stress bearing plate 35 and the bottom auxiliary elastic rubber 36 is similar to that among the top trapezoidal stress guide plate 31, the top stress bearing plate 32 and the top auxiliary elastic rubber 33, and the pressure borne by the longitudinal connecting plate 5 is buffered sequentially through the bottom stress bearing plate 35, the bottom auxiliary elastic rubber 36 and the bottom trapezoidal stress guide plate 34.

It should be noted that, in the present invention, the "up, down, top, bottom" orientation refers to the orientation directly shown in fig. 1; in the same set of fixed connector 2 and damper assembly, the inner side of the angled plate 4 refers to the side facing the fixed connector 2 and the outer side refers to the side of the fixed connector 2.

It should be noted that, when the present invention relates to a numerical range, it should be understood that two endpoints of each numerical range and any value between the two endpoints can be selected, and since the steps and methods adopted are the same as those in the embodiment, in order to prevent redundancy, the present invention describes a preferred embodiment. While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The bridge damping expansion joint device capable of being automatically closed comprises a bridge body (1), and is characterized by further comprising a fixed connector (2) and damping components, wherein the bridge body (1), the fixed connector (2) and the damping components are installed in a one-to-one combination mode, and the number of the fixed connector, the fixed connector and the damping components is two; every group bridge body (1) fixed connector (2) with damper unit's connected mode as follows: the fixed connector (2) is fixedly wrapped at the end part of the bridge body (1), the damping component comprises a transverse connecting plate (3), a bent angle plate (4), a longitudinal connecting plate (5), a damping spring (6), damping rubber (7) and a damping connecting rod (8), the transverse connecting plate (3), the bent angle plate (4) and the longitudinal connecting plate (5) are sequentially connected to form a damping plate which can wrap the vertex angle of the fixed connector (2), the damping connecting rods (8) are arranged between the transverse connecting plate (3) and the fixed connector (2) and between the longitudinal connecting plate (5) and the fixed connector (2), the damping spring (6) is arranged between the bent angle plate (4) and the fixed connector (2), the damping rubber (7) is fixedly connected to the outer wall of the corner plate (4);

two sets of fixed connector (2) with damper symmetric distribution is between two adjacent bridge bodies (1), and two damping rubber (7) can be partly laminating together, still is provided with top elastic rubber (9) between two damping rubber (7), the upper surface of top elastic rubber (9) the upper surface of bridge body (1) upper surface and transverse connection board (3) flushes, two connect through bottom elastic rubber (91) between the base angle of fixed connector (2).

2. The automatically closable bridge damping expansion joint device according to claim 1, characterized in that the number of the damping springs (6) is at least three, and at least one damping spring is distributed in the longitudinal direction, the oblique direction and the transverse direction.

3. The bridge damping expansion joint device capable of being automatically closed as claimed in claim 2, wherein the damping component further comprises a top trapezoidal stress guide plate (31), a top stress bearing plate (32) and a top auxiliary elastic rubber (33), wherein the top trapezoidal stress guide plate (31) is obliquely arranged and is installed at one end of the top of the fixed connector (2) far away from the top corner; bridge body (1) surface mounting fixed connector (2) department has seted up the cave mouth, the degree of depth of cave mouth equals top trapezoidal stress deflector (31) top arrives the distance of cave mouth bottom, top stress accepts board (32) to be connected transverse connection board (3) are close to the one end of top trapezoidal stress deflector (31), the inclined plane of top trapezoidal stress deflector (31) with stress accepts and connects through the supplementary elastic rubber in top (33) between board (32).

4. The automatically closable bridge damping expansion joint device according to claim 3, wherein the top stress receiving plate (32) is parallel to the inclined plane of the top trapezoidal stress guide plate (31).

5. The apparatus for damping expansion joint of bridge as claimed in claim 3, wherein a distance of 1-5mm is left between the bottom of the top trapezoidal stress guide plate (31) and the top of the fixed connector (2).

6. The bridge damping expansion joint device capable of being automatically closed according to claim 3, wherein the damping assembly further comprises the bottom trapezoidal stress guide plate (34), a bottom stress receiving plate (35) and bottom auxiliary elastic rubber (36), the bottom trapezoidal stress guide plate (34) is located below the longitudinal connecting plate (5) and is fixedly connected with the fixed connecting head (2), the bottom stress receiving plate (35) is connected to the bottom end of the longitudinal connecting plate (5), and an inclined surface of the bottom trapezoidal stress guide plate (34) is connected with the bottom stress receiving plate (35) through the bottom auxiliary elastic rubber (36).

7. The apparatus for damping expansion joints of bridges in accordance with claim 6, wherein the bottom trapezoidal stress guide plate (34) is parallel to the inclined plane of the bottom stress receiving plate (35).

8. The bridge damping expansion joint device capable of being automatically closed according to any one of claims 1 to 7, wherein the fixed connector (2) is a U-shaped fixed plate wrapped at the end of the bridge body (1), and the U-shaped fixed plate is provided with a first transverse plate located on the upper surface of the bridge body (1), a second transverse plate located on the lower surface of the bridge body (1), and a longitudinal plate connecting the first transverse plate and the second transverse plate, and the longitudinal plate is fixedly mounted on the end surface of the end of the bridge body (1).