Height-adjustable bridge expansion joint connection and anchoring structure

Abstract

The present invention provides a height-adjustable bridge expansion joint connection and anchoring structure, which includes a beam body, a beam end seal, an expansion joint device, a steel mesh, at least two embedded channel steels and at least two connection components. Embedded anchor bars are provided in both the beam body and the beam end seal. The expansion joint device includes special-shaped steel and at least two expansion joint circular bars. An installation groove is formed between the two expansion joint circular bars, and the installation groove communicates vertically. The two embedded channel steels are respectively embedded in the beam body and the beam end seal. The bottom of the embedded channel steel is connected to the embedded anchor bar, and a connection groove is provided at the upper part of the embedded channel steel. Both connection grooves are located below the installation groove, and the installation groove communicates with the two connection grooves respectively. The connection components are connected between the installation groove and the connection groove. In the vertical direction, the height of the connection position of the expansion joint circular bar on the connection component is adjustable, and the steel mesh is connected to the expansion joint circular bar. The present invention can adaptively adjust the position height of the expansion joint device according to the actual on-site environment.

Description

Technical Field

[0001] The present invention relates to the field of bridge expansion joint devices, and particularly to a bridge expansion joint connection and anchoring structure with adjustable height. Background Art

[0002] In highway engineering, the general method for connecting and anchoring a bridge expansion joint device to a beam body is as follows: Reinforcing bars are pre-embedded in the beam body, and the pre-embedded reinforcing bars protrude from the beam surface. When installing the expansion joint device, the circular bars of the expansion joint device are welded and anchored to the pre-embedded reinforcing bars. After installation, concrete is poured on the beam surface and on one side of the expansion joint device. During the actual construction process, due to the following reasons, it is very difficult for the circular bars and the pre-embedded reinforcing bars to correspond one by one, which has a great impact on the anchoring operation and quality. Reason 1: When the precast beam is produced, the beam body and the end sealing need to be poured in two times. Due to construction errors, the pre-embedded reinforcing bars are prone to deviation. Reason 2: In the widened section of the beam surface in the interchange area, the width of the wet joint changes accordingly, and the pre-embedded reinforcing bars cannot be accurately set. In addition, after the precast beam is erected, during the construction process of the paving layer, construction vehicles need to pass frequently, and the pre-embedded reinforcing bars protruding from the beam surface are extremely vulnerable to damage and bending deformation, and cannot maintain their original state. The performance of the reinforcing bars after being bent and straightened will decline, affecting the structural performance of the highway. Generally, the installation height position of the expansion joint device is prone to deviation up and down due to the influence of concrete pouring construction. The existing anchoring structure does not have a height adjustment function, and it is very difficult to ensure the accuracy of the height position of the expansion joint device. Summary of the Invention

[0003] The purpose of the present invention is to provide a bridge expansion joint connection and anchoring structure with a height adjustment function.

[0004] To achieve the above purpose, the bridge expansion joint connection and anchoring structure with adjustable height provided by the present invention includes a beam body, a beam end sealing, and an expansion joint device. Pre-embedded anchor bars are provided in both the beam body and the beam end sealing. The expansion joint device is arranged on the beam end sealing. Concrete is poured on both the beam body and the beam end sealing. The expansion joint device includes a profiled steel and at least two expansion joint circular bars. The two expansion joint circular bars are arranged along the extending direction of the profiled steel. An installation groove is formed between the two expansion joint circular bars, and the installation groove communicates up and down. The bridge expansion joint connection and anchoring structure further includes a steel mesh, at least two pre-embedded channel steels, and at least two connection components. The two pre-embedded channel steels are respectively pre-embedded in the beam body and the beam end sealing. The bottom of the pre-embedded channel steel is connected to the pre-embedded anchor bar. A connection groove is provided at the upper part of the pre-embedded channel steel. Both connection grooves are located below the installation groove, and the installation groove communicates with the two connection grooves respectively. The connection components are connected between the installation groove and the connection groove. In the vertical direction, the height of the connection position of the expansion joint circular bar on the connection component is adjustable, and the steel mesh is connected to the expansion joint circular bar.

[0005] As can be seen from the above solution, by setting up the connecting component to connect the embedded channel steel with the expansion joint circular reinforcement, and by setting the height of the connection position of the expansion joint circular reinforcement on the connecting component to be adjustable, it is convenient to adjust the height position of the expansion joint device in the vertical direction according to the actual needs on site, so as to ensure the installation accuracy of the expansion joint device.

[0006] A further solution is that the top surfaces of the embedded channel steels are flush with the top surface of the beam body and the top surface of the beam end closure respectively.

[0007] As can be seen from the above solution, by setting the embedded channel steel to be flush with the beam surface, it is not only convenient for construction vehicles to pass, but also can protect the embedded anchor bars and the embedded channel steel from bending and deforming.

[0008] A further solution is that the number of the embedded channel steels is equal to the number of the connecting components, and the embedded channel steels and the connecting components are arranged in one-to-one correspondence.

[0009] A further solution is that the connecting component includes a bolt, a first nut, a second nut and a third nut. The head of the bolt is embedded in the connecting groove, and the head of the bolt and the connecting groove are fixedly connected by the first nut. The screw of the bolt is embedded in the installation groove, and the screw of the bolt and the installation groove are fixedly connected by the second nut and the third nut. The second nut and the third nut are respectively arranged on the upper and lower sides of the expansion joint circular reinforcement.

[0010] A further solution is that in the vertical direction, the height positions of the second nut and the third nut are adjustable.

[0011] As can be seen from the above solution, by adjusting the height positions of the second nut and the third nut on the bolt, the height position of the expansion joint device is adjustable, which has the advantages of simple structure and convenient operation.

[0012] A further solution is that the connecting component further includes a plurality of gaskets, and the gaskets are respectively arranged corresponding to the first nut, the second nut and the third nut. The width of the gasket is greater than the respective widths of the connecting groove and the installation groove.

[0013] A further solution is that in the horizontal projection plane, the extending direction of the installation groove is perpendicular to the extending direction of the special-shaped steel, the extending direction of the connecting groove is parallel to the extending direction of the special-shaped steel, and the extending length of the connecting groove is greater than the groove width of the installation groove.

[0014] As can be seen from the above solution, by setting the extending length of the connecting groove to be greater than the groove width of the installation groove, in the extending direction of the connecting groove, the connecting component can adjust to a suitable position in the extending direction of the connecting groove, so that the expansion joint circular reinforcement can be fixedly connected to the embedded channel steel through the connecting component, that is, the connecting groove has a large tolerance for position deviation and can ensure that the expansion joint circular reinforcement can surely be fixedly connected to the connecting groove.

[0015] A further solution is that the expansion joint circular reinforcement includes an upper circular section, a middle circular section, and a lower circular section. The middle circular section is located above the beam body, and the profiled steel is located above the end seal of the beam body. Both the upper circular section and the lower circular section are connected between the middle circular section and the profiled steel.

[0016] A further solution is that at least one first longitudinal reinforcement is arranged on one side of the expansion joint device. The first longitudinal reinforcement extends along the extension direction of the profiled steel, and the upper circular section is fixedly connected to the first longitudinal reinforcement.

[0017] A further solution is that the steel mesh includes a plurality of first transverse reinforcements and a plurality of second longitudinal reinforcements. The first transverse reinforcements and the second longitudinal reinforcements are arranged vertically and horizontally in a crisscross manner, and the steel mesh is fixedly connected to the expansion joint circular reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural diagram of an embodiment of the present invention.

[0019] Figure 2 is a top view of an embodiment of the present invention.

[0020] Figure 3 is a structural diagram of the expansion joint device in an embodiment of the present invention.

[0021] The present invention will be further described below in conjunction with the drawings and embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] See Figures 1 to 3 , the bridge expansion joint connection and anchoring structure provided in this embodiment is arranged on both sides of the expansion joint 5. The bridge expansion joint connection and anchoring structure includes a beam body 1, an end seal of the beam body, an expansion joint device 3, a steel mesh 4, at least two embedded channel steels, and at least two connection components 6. The end seal of the beam body is located on one side of the beam body 1, and the expansion joint 5 is formed between two adjacent end seals of the beam body. After installing the expansion joint device 3, it is necessary to pour concrete on the beam body 1 and the end seal of the beam body, so that the steel mesh 4, the embedded channel steels, the connection components 6, and the expansion joint circular reinforcement 32 of the expansion joint device 3 are all buried in the concrete.

[0023] Both the beam body 1 and the beam end capping are formed by casting concrete in two times. Before casting the concrete, a first embedded anchor bar 12 and a first embedded channel steel 11 are pre - installed in the beam body 1. The first embedded channel steel 11 is located above the first embedded anchor bar 12, and the bottom of the first embedded channel steel 11 is fixedly connected to the first embedded anchor bar 12. The first embedded channel steel 11 is provided with a first connection groove 111, the notch of the first connection groove 111 is arranged upward, and the top surface of the first embedded channel steel 11 is flush with the top surface of the beam body 1. Before casting the concrete, a second embedded anchor bar 22 and a second embedded channel steel 21 are pre - installed in the beam end capping. The second embedded channel steel 21 is located above the second embedded anchor bar 22, and the bottom of the second embedded channel steel 21 is fixedly connected to the second embedded anchor bar 22. The second embedded channel steel 21 is provided with a second connection groove 211, the notch of the second connection groove 211 is arranged upward, and the top surface of the second embedded channel steel 21 is flush with the top surface of the beam end capping. The extending directions of both the first connection groove 111 and the second connection groove 211 are parallel to the extending direction of the expansion joint 5. Both the first connection groove 111 and the second connection groove 211 are "T" - shaped grooves, and there is a preset distance between the first connection groove 111 and the second connection groove 211.

[0024] In this embodiment, anchor bars and channel steels are respectively embedded in the beam body 1 and the beam end capping. During casting, it is only necessary to ensure that the first embedded anchor bar 12 and the first embedded channel steel 11 in the beam body 1 are fixedly connected, and the second embedded anchor bar 22 and the second embedded channel steel 21 in the beam end capping are fixedly connected. There is no need to connect between the first embedded channel steel 11 and the second embedded channel steel 21, so that the first embedded channel steel 11 and the second embedded channel steel 21 can be free from the influence of secondary casting, which is convenient for construction operation. When casting the beam body 1 and the beam end capping, in order to prevent the concrete from entering the connection groove, foam can be filled in the connection groove and taken out when installing the expansion joint device 3 later.

[0025] On both sides in the width direction of the expansion joint 5, expansion joint devices 3 are respectively arranged, and the two expansion joint devices 3 are symmetrically arranged with respect to the midline of the expansion joint 5. The expansion joint device 3 includes special-shaped steel 31 and a plurality of expansion joint circular ribs 32. The special-shaped steel 31 is arranged on one side of the expansion joint 5 along the extension direction of the expansion joint 5, and the plurality of expansion joint circular ribs 32 are arranged along the extension direction of the special-shaped steel 31. In this embodiment, the number of the expansion joint circular ribs 32 is set to an even number, and the expansion joint circular ribs 32 are arranged in pairs, and the intervals between the groups are evenly arranged. An installation groove 33 is formed between two expansion joint circular ribs 32 in the same group. The extension direction of the installation groove 33 is perpendicular to the extension direction of the special-shaped steel 31, and in the vertical direction, the installation groove 33 is communicated up and down. The installation groove 33 is located above the first connection groove 111 and the second connection groove 211, and in the extension direction of the installation groove 33, the installation groove 33 straddles the first connection groove 111 and the second connection groove 211, so that the installation groove 33 is respectively communicated with the first connection groove 111 and the second connection groove 211 up and down, and the extension length of the first connection groove 111 is equal to the extension length of the second connection groove 211. On the horizontal projection plane, the respective extension lengths of the first connection groove 111 and the second connection groove 211 are more than twice the groove width of the installation groove 33, so that even if there is a slight deviation in the position of the expansion joint circular rib 32 in the extension direction of the connection groove due to construction error, the installation groove 33 can still be vertically aligned with the first connection groove 111 and the second connection groove 211. In this embodiment, the extension lengths of both the first connection groove 111 and the second connection groove 211 are 100 cm, and the groove width of the installation groove 33 is 24 cm.

[0026] The expansion joint circular rib 32 includes an upper circular segment 321, a middle circular segment 322, and a lower circular segment 323. The middle circular segment 322 is located above the beam body 1, and the special-shaped steel 31 is located above the beam end seal. The upper circular segment 321 and the lower circular segment 323 respectively extend from above the beam end seal towards the middle circular segment 322, and the upper circular segment 321 and the lower circular segment 323 are connected between the middle circular segment 322 and the special-shaped steel 31 in a parallel up-and-down manner.

[0027] The number of the connection components 6 is equal to the number of the embedded channel steels, and the embedded channel steels and the connection components 6 are arranged in one-to-one correspondence. The connection component 6 is connected between the installation groove 33 and the connection groove, and is used for fixedly connecting the expansion joint device 3 and the embedded channel steel. In the vertical direction, the height of the connection position of the expansion joint circular rib 32 on the connection component 6 is adjustable, that is, the expansion joint circular rib 32 can finely adjust its height position in the vertical direction through the connection component 6.

[0028] The connecting component 6 includes a bolt 61, a first nut 62, a first gasket 63, a second nut 64, a second gasket 65, a third nut 66 and a third gasket 67. The bolt 61 includes a head and a screw rod. The head is arranged in the connecting groove and can move along the extending direction of the connecting groove. The screw rod passes through the notch of the connecting groove and extends vertically upward. Both the first gasket 63 and the first nut 62 are sleeved on the lower part of the screw rod. The width of the first gasket 63 is greater than the width of the notch of the connecting groove. The first nut 62 is fixed at the notch of the connecting groove through the first gasket 63 to limit the up-and-down movement of the screw rod in the vertical direction. The screw rod is arranged in the installation groove 33 and can move horizontally along the extending direction of the installation groove 33. The second gasket 65 and the second nut 64 are sleeved on the middle part of the screw rod and are located below the lower annular section 323. The width of the second gasket 65 is greater than the width of the installation groove 33. The second nut 64 is connected to the lower annular section 323 through the second gasket 65 to limit the downward movement of the expansion joint annular rib 32 in the vertical direction. The third gasket 67 and the third nut 66 are sleeved on the upper part of the screw rod and are located above the upper annular section 321. The width of the third gasket 67 is greater than the width of the installation groove 33. The third nut 66 is connected to the upper annular section 321 through the third gasket 67 to limit the upward movement of the expansion joint annular rib 32 in the vertical direction. In the vertical direction, the respective height positions of the second nut 64 and the third nut 66 on the screw rod are adjustable, so as to realize the adjustable height position of the expansion joint annular rib 32, that is, to realize the adjustable height position of the expansion joint device 3.

[0029] On one side of the expansion joint device 3, there are two first longitudinal steel bars 7. The first longitudinal steel bars 7 extend along the extending direction of the profiled steel 31. The first longitudinal steel bars 7 are fixedly connected to the upper annular section 321. The first longitudinal steel bars 7 can be located below the upper annular section 321 or above the upper annular section 321. In this embodiment, the former is preferably selected.

[0030] The steel mesh 4 includes a plurality of first transverse steel bars 41 and a plurality of second longitudinal steel bars 42. The first transverse steel bars 41 and the second longitudinal steel bars 42 are arranged vertically and horizontally, and the first transverse steel bars 41 are perpendicular to the extending direction of the profiled steel 31. The first end of the first transverse steel bar 41 extends to the lower part of the profiled steel 31, and the second end of the first transverse steel bar 41 extends upward above the middle of the beam body 1 and exceeds the position where the middle annular section 322 is located. The second longitudinal steel bars 42 are parallel to the extending direction of the profiled steel 31. The steel mesh 4 is fixedly connected to the lower annular section 323.

[0031] In Figure 2Among them, each group of expansion joint circular reinforcement bars 32 respectively correspond to the first embedded channel steel 11, the second embedded channel steel 21 and the two connecting components 6. In the width direction of the expansion joint 5, the connecting component 6 can move along the extension direction of the installation groove 33 to adaptively adjust the position of the expansion joint device 3 in this direction. In the extension direction of the expansion joint 5, the connecting component 6 can move along the extension direction of the connecting groove to adaptively adjust the position of the expansion joint device 3 in this direction, so that the expansion joint circular reinforcement bar 32 can be accurately and fixedly connected to the embedded channel steel through the connecting component 6. The anchoring structure of this embodiment has a large error tolerance, which is not only convenient for operation and construction, but also can reduce the adverse effects caused by position errors during the operation and construction process, and improve the anchoring efficiency and quality.

[0032] In summary, it can be seen that the present invention connects the embedded channel steel and the expansion joint circular reinforcement bar by setting a connecting component, and by setting the height of the connection position of the expansion joint circular reinforcement bar on the connecting component to be adjustable, it is convenient to adjust the height position of the expansion joint device in the vertical direction according to the actual needs on site to ensure the installation accuracy of the expansion joint device.

[0033] Finally, it should be emphasized that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A height-adjustable connection and anchoring structure for bridge expansion joints, comprising a beam body, a beam end seal, and an expansion joint device. Embedded anchor bars are provided in both the beam body and the beam end seal. The expansion joint device is arranged on the beam end seal, and concrete is poured on both the beam body and the beam end seal. It is characterized in that: The expansion joint device includes profiled steel and at least two expansion joint circular bars. The two expansion joint circular bars are arranged along the extension direction of the profiled steel, and an installation groove is formed between the two expansion joint circular bars, and the installation groove communicates vertically up and down; The connection and anchoring structure for bridge expansion joints further includes a steel mesh, at least two embedded channel steels, and at least two connection components. The two embedded channel steels are respectively embedded in the beam body and the beam end seal. The bottom of the embedded channel steel is connected to the embedded anchor bar. A connection groove is provided at the upper part of the embedded channel steel. Both of the two connection grooves are located below the installation groove, and the installation groove communicates with the two connection grooves respectively. The connection component is connected between the installation groove and the connection groove. In the vertical direction, the height of the connection position of the expansion joint circular bar on the connection component is adjustable, and the steel mesh is connected to the expansion joint circular bar; The connection component includes a bolt, a first nut, a second nut, and a third nut. The head of the bolt is embedded in the connection groove, and the head of the bolt and the connection groove are fixedly connected by the first nut. The screw of the bolt is embedded in the installation groove, and the screw of the bolt and the installation groove are fixedly connected by the second nut and the third nut. The second nut and the third nut are respectively arranged on the upper and lower sides of the expansion joint circular bar; In the vertical direction, the height positions of the second nut and the third nut are adjustable.

2. The connection and anchoring structure for bridge expansion joints according to claim 1, characterized in that: The top surfaces of the embedded channel steels are flush with the top surface of the beam body and the top surface of the beam end seal respectively.

3. The connection and anchoring structure for bridge expansion joints according to claim 1, characterized in that: The number of the embedded channel steels is equal to the number of the connection components, and the embedded channel steels and the connection components are arranged in one-to-one correspondence.

4. The connection and anchoring structure for bridge expansion joints according to claim 1, characterized in that: The connection component further includes a plurality of gaskets. The gaskets are respectively arranged corresponding to the first nut, the second nut, and the third nut, and the width of the gasket is greater than the respective widths of the connection groove and the installation groove.

5. The connection and anchoring structure for bridge expansion joints according to claim 1, characterized in that: In the horizontal projection plane, the extension direction of the installation groove is perpendicular to the extension direction of the profiled steel, the extension direction of the connection groove is parallel to the extension direction of the profiled steel, and the extension length of the connection groove is greater than the groove width of the installation groove.

6. The connection and anchoring structure for bridge expansion joints according to claim 1, characterized in that: The expansion joint annular reinforcement includes an upper annular section, a middle annular section and a lower annular section. The middle annular section is located above the beam body, the profiled steel is located above the end sealing of the beam body, and both the upper annular section and the lower annular section are connected between the middle annular section and the profiled steel.

7. The bridge expansion joint connection and anchoring structure according to claim 6, wherein: At least one first longitudinal reinforcement is arranged on one side of the expansion joint device. The first longitudinal reinforcement extends along the extension direction of the profiled steel, and the upper annular section is fixedly connected to the first longitudinal reinforcement.

8. The bridge expansion joint connection and anchoring structure according to claim 1, wherein: The steel mesh includes a plurality of first transverse reinforcements and a plurality of second longitudinal reinforcements. The first transverse reinforcements and the second longitudinal reinforcements are arranged vertically and horizontally, and the steel mesh is fixedly connected to the expansion joint annular reinforcement.

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