Reinforcing device for overturning resistance of steel box girder bridge

Abstract

The utility model provides an anti-overturning reinforcing device for a steel box girder bridge. The anti-overturning reinforcing device comprises a steel box girder, a pier, an anchor pulling plate assembly, a pier top anchoring seat assembly, an in-box stiffening girder assembly and an in-box anchor cushion block assembly. One end of the anchoring plate assembly is connected with one end face of the pier top anchoring seat assembly, and the other end is connected with one end face of the in-box anchoring cushion block assembly; the other end face of the pier top anchoring base assembly is fixedly installed on the pier through bolts. The other end face of the in-box anchor cushion block assembly is connected with one end face of the in-box stiffening beam assembly. According to the device, through a proper stiffening and force transmission structure, the anti-overturning capacity of the steel box girder bridge is improved, and the safety of a bridge structure is guaranteed; in addition, all the arranged components are small-sized scattered components, and all the components are connected into a whole through high-strength bolts, so that the advantages of convenience in transportation and installation are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-overturning reinforcement of highway and municipal steel box girder bridges, in particular to an anti-overturning reinforcement device for steel box girder bridges. Background Art

[0002] Steel box girder bridges have been increasingly widely used in bridge construction in recent years due to their advantages such as good mechanical performance, light weight, high strength, quick installation, and easy maintenance. However, steel box girder bridges also have disadvantages such as light weight and poor anti-overturning ability. With the increase of heavy-loaded and overloaded vehicles, steel box girder bridge overturning accidents occur from time to time. In order to ensure the safe operation of steel box girder bridges, it is necessary to carry out anti-overturning reinforcement work for steel box girder bridges.

[0003] In order to solve the problem of steel box girder bridges being prone to overturning, reinforcement methods such as adding weighted concrete, adding piers, adding steel hoops and load-bearing supports, and adding anti-pullout devices are currently commonly used. The above reinforcement methods have the disadvantages of large engineering workload, many processes, and unfavorable stress on the structure after reinforcement. In particular, the traditional reinforcement method of adding anti-pullout devices has the disadvantages of low bearing capacity of the connection nodes and cannot meet the stress requirements, making it difficult to ensure structural safety after reinforcement. Summary of the invention

[0004] Technical solution: In order to solve the above-mentioned technical problems, the utility model provides a reinforcement device for steel box girder bridge against overturning, which specifically includes a steel box girder, a bridge pier, an anchor plate assembly, a pier top anchor seat assembly, a box-inner stiffening beam assembly, and a box-inner anchor pad assembly; one end of the anchor plate assembly is connected to one end face of the pier top anchor seat assembly, and the other end is connected to one end face of the box-inner anchor pad assembly; the other end face of the pier top anchor seat assembly is fixedly mounted on the bridge pier by bolts; the other end face of the box-inner anchor pad assembly is connected to one end face of the box-inner stiffening beam assembly.

[0005] As an improvement, it also includes T-shaped stiffening ribs at the bottom of the beam, which are arranged inside the steel box beam; wherein the T-shaped stiffening ribs at the bottom of the beam are spaced T-shaped rib plate structures, each rib plate is independently fixedly installed along the inner side surface of the steel box beam, and the other end face of the stiffening beam assembly inside the box is connected to the T-shaped stiffening ribs at the bottom of the beam inside the steel box beam.

[0006] As an improvement, the pier top anchor seat assembly is a polyhedral fixing seat structure, one side of which is fixedly connected to the bridge pier by implanting a chemical anchor bolt.

[0007] As an improvement, the box-inner stiffening beam assembly and the beam bottom T-shaped stiffening rib are detachably connected via bolts.

[0008] As an improvement, the anchor plate assembly is detachably connected to the anchor pad assembly in the box via bolts.

[0009] Beneficial effects: The reinforcement device proposed by the utility model improves the anti-overturning ability of the steel box girder bridge and ensures the safety of the bridge structure by setting appropriate stiffening and force transmission structures; in addition, since the components set are all small loose components, the components are connected into a whole through high-strength bolts, which is convenient for transportation and installation, and is suitable for the narrow and confined space in the steel box girder. At the same time, it has the advantages of high structural bearing capacity, small number of projects, and convenient on-site construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a part of the reinforcement device of the utility model.

[0011] Figure 2 This is the front view of the reinforcement device of the utility model.

[0012] In the figure: steel box girder 2, bridge pier 1, anchor plate assembly 3, pier top anchor seat assembly 4, box inner stiffening beam assembly 5, box inner anchor pad assembly 6, beam bottom T-shaped stiffening rib 7. DETAILED DESCRIPTION

[0013] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0014] See Figure 1 As shown, the utility model is a reinforcement device for steel box girder bridge against overturning, which specifically includes a steel box girder 2, a bridge pier 1, an anchor plate assembly 3, a pier top anchor seat assembly 4, a box-inner stiffening beam assembly 5, and a box-inner anchor pad assembly 6; one end of the anchor plate assembly 3 is connected to one end face of the pier top anchor seat assembly 4, and the other end is connected to one end face of the box-inner anchor pad assembly 6; the other end face of the pier top anchor seat assembly 4 is fixedly mounted on the bridge pier 2 by bolts; the other end face of the box-inner anchor pad assembly 6 is connected to one end face of the box-inner stiffening beam assembly 5.

[0015] In the present invention, it also includes a beam bottom T-shaped stiffening rib 7, which is arranged inside the steel box beam 2; wherein the beam bottom T-shaped stiffening rib 7 is a spaced T-shaped rib plate structure, each rib plate is independently fixedly installed along the inner side of the steel box beam, and the other end face of the box inner stiffening beam assembly 5 is connected to the beam bottom T-shaped stiffening rib 7 inside the steel box beam 2

[0016] In the present invention, the pier top anchor seat assembly 4 is a polyhedral fixing seat structure, one side of which is fixedly connected to the bridge pier 1 by implanting a chemical anchor bolt.

[0017] In the utility model, the box-inner stiffening beam assembly 5 is detachably connected to the beam bottom T-shaped stiffening rib 7 via bolts; the anchor plate assembly 3 is detachably connected to the box-inner anchor pad assembly 6 via bolts.

[0018] See Figure 2 As shown, the utility model is composed of several parts including a box-inner stiffening beam assembly 5, a box-inner anchor pad assembly 6, an anchor plate assembly 3, and a pier top anchor seat assembly 4. The components are connected into one body to connect the steel box girder and the bridge pier, thereby improving the anti-overturning performance of the steel box girder.

[0019] The anchor plate assembly 3 is a connecting device between the steel box girder 1 and the bridge pier 1, which can limit the vertical displacement of the steel box girder 2, provide vertical tensile force, and prevent the overturning of the steel box girder 2. The anchor plate assembly 3 is connected to the anchor pad assembly 6 in the box by high-strength bolts, and is connected to the pier top anchor seat assembly 4 by a pin shaft.

[0020] The box-internal stiffening beam assembly 5 is connected to the T-shaped stiffening rib 7 of the steel box beam through high-strength bolts to strengthen the local structure of the steel box beam, thereby improving the structural bearing capacity.

[0021] The anchor pad assembly 6 in the box connects the stiffening beam assembly 5 and the anchor plate assembly 3 in the box to ensure the straight transmission of the pulling force. The pier top anchor seat assembly is connected to the bridge pier by implanting chemical anchor bolts.

[0022] The reinforcement device in the utility model is to connect the stiffening ribs of the steel box beam into a whole by arranging a stiffening beam assembly inside the box to bear force together, thereby strengthening the local tensile bearing capacity of the steel box beam and meeting the requirements for the anti-overturning performance of the steel box beam, thus overcoming the shortcomings of the previous reinforcement method that does not pay attention to the setting of the stiffening structure inside the box and has low bearing capacity.

[0023] In addition, all parts are loose components, connected into a whole by high-strength bolts. The components are broken down into parts, and the parts are integrated into a whole. Prefabrication in the factory and installation on site make the construction convenient and fast, and can meet the requirements of the closed and narrow space in the steel box beam.

[0024] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A reinforcement device for steel box girder bridge against overturning, characterized in that: The invention comprises a steel box girder (2), a bridge pier (1), an anchor plate assembly (3), a pier top anchor seat assembly (4), an in-box stiffening beam assembly (5), and an in-box anchor pad assembly (6); one end of the anchor plate assembly (3) is connected to one end face of the pier top anchor seat assembly (4), and the other end is connected to one end face of the in-box anchor pad assembly (6); the other end face of the pier top anchor seat assembly (4) is fixedly mounted on the bridge pier (1) by means of bolts; the other end face of the in-box anchor pad assembly (6) is connected to one end face of the in-box stiffening beam assembly (5).

2. The anti-overturning reinforcement device for steel box girder bridge according to claim 1 is characterized in that: It also includes a T-shaped stiffening rib (7) at the bottom of the beam, which is arranged inside the steel box beam (2); wherein the T-shaped stiffening rib (7) at the bottom of the beam is a spaced T-shaped rib plate structure, each rib plate is independently fixedly installed along the inner side surface of the steel box beam, and the other end surface of the box-inner stiffening beam assembly (5) is connected to the T-shaped stiffening rib (7) at the bottom of the beam inside the steel box beam (2).

3. The anti-overturning reinforcement device for steel box girder bridge according to claim 1 is characterized in that: The pier top anchor seat assembly (4) is a polyhedral fixing seat structure, one side of which is fixedly connected to the bridge pier (1) by implanting a chemical anchor bolt.

4. The anti-overturning reinforcement device for steel box girder bridge according to claim 2 is characterized in that: The box-inside stiffening beam assembly (5) and the beam bottom T-shaped stiffening rib (7) are detachably connected via bolts.

5. The anti-overturning reinforcement device for steel box girder bridge according to claim 1 is characterized in that: The anchor plate assembly (3) is detachably connected to the anchor pad assembly (6) in the box via bolts.

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