CN-224227639-U - Bridge expansion joint structure

CN224227639UCN 224227639 UCN224227639 UCN 224227639UCN-224227639-U

Abstract

The utility model relates to the technical field of road and bridge equipment, and particularly discloses a bridge expansion joint structure which comprises a permanent protection structure and a support assembly, wherein the permanent protection structure is precast in a concrete structure of bridge bodies at two sides of an expansion joint, and the support assembly is arranged at an opening position of the expansion joint through the permanent protection structure and comprises bearing steel, waterproof adhesive tapes and top steel. When this bridge expansion joint structure needs to change the waterproof adhesive tape in the expansion joint, through temporary protection subassembly's setting, be convenient for utilize temporary protection adhesive tape to form the protection to waterproof adhesive tape upside, avoided the foreign matter to fall to the bridge end, cause the problem of injury to the personnel under the bridge. Through the setting of anticreep reinforcement steel sheet, anticreep stirrup, bearing steel and waterproof adhesive tape, formed a bridge expansion joint structure that can dismantle and assemble, the scene assembly and installation of being convenient for when using. Solves the problem that the waterproof adhesive tape is inconvenient to replace when the adhesive tape in the traditional expansion joint structure is aged or damaged.

Inventors

DONG HAO
HUANG QINGQING
MAO ZHAOMING
ZHU JIN
MA BIANBIAN
HOU JIANZHAO
WANG YONGLE
YANG XIAOQI
HUANG KE

Assignees

西安市南郊市政设施养护管理有限公司

Dates

Publication Date: 20260512
Application Date: 20250427

Claims (9)

1. The bridge expansion joint structure is arranged between two adjacent bridge bodies (1), and is characterized by comprising: the permanent protection structure is precast in the concrete structure of the bridge body (1) at the two sides of the expansion joint; The support assembly is arranged at the opening position of the expansion joint through a permanent protection structure and comprises a bearing steel (4), a waterproof adhesive tape (5) and a top steel (9), wherein the bearing steel (4) is arranged on an extension bearing platform of the anti-falling reinforced steel plate (2), the top steel (9) is detachably arranged on the bearing steel (4), and the waterproof adhesive tape (5) is arranged between the bearing steel (4) and the top steel (9); the permanent protection structure comprises an anti-falling reinforced steel plate (2), is embedded in the bridge body (1) through an anti-falling stirrup (3), and extends to the outer side of one side of the expansion joint.
2. A bridge expansion joint structure according to claim 1, wherein the waterproof rubber strip (5) spans across the opening of the expansion joint.
3. A bridge expansion joint structure according to claim 1, wherein the bearing steel (4) is provided with a bolt hole (11), the upper part of the top steel (9) is provided with a reaming hole (7) and a threaded hole, a locking bolt (6) is inserted into the threaded hole, and the locking bolt (6) is in threaded connection with the bolt hole (11).
4. A bridge expansion joint structure according to claim 1, characterized in that the bearing steel (4) is provided with a positioning plugboard (15), and the positioning plugboard (15) is matched with a positioning slot (16) arranged on the top steel (9).
5. The bridge expansion joint structure according to claim 1, wherein the contact surfaces of the bearing steel (4) and the top steel (9) are special-shaped surfaces, and the bearing steel (4) and the top steel (9) are connected to form special-shaped locking grooves on the connection surfaces to be matched with the waterproof adhesive tapes (5).
6. A bridge expansion joint structure according to claim 1, wherein the supporting assembly further comprises a protective steel plate (12), and the protective steel plate (12) is arranged between two adjacent top steels (9) at two sides of the expansion joint through positioning bolts (13).
7. A bridge expansion joint structure according to claim 6, wherein a chute (14) is further arranged on one side of the protective steel plate, and the chute (14) is matched with the positioning bolt (13).
8. A bridge expansion joint structure according to claim 1, further comprising a temporary protection assembly, wherein the temporary protection assembly comprises a temporary protection rubber strip (10), and the temporary protection rubber strip (10) is arranged between two top steels (9) on two sides of the expansion joint and is matched with a clamping groove (8) formed in the top steels (9).
9. The bridge expansion joint structure according to claim 8, wherein the upper part of the inner cavity of the clamping groove (8) is provided with an arc protruding part which is matched with a groove on the end part of the temporary protection rubber strip (10).

Description

Bridge expansion joint structure Technical Field The utility model belongs to the technical field of road and bridge engineering, and particularly relates to a bridge expansion joint structure. Background Bridge expansion joints refer to expansion joints which are usually arranged between two beam ends, between a beam end and a bridge abutment or at the hinge position of a bridge in order to meet the requirement of bridge deck deformation. The change of the ambient temperature can lead to the shrinkage or expansion of the bridge material, so that gaps or damages to the bridge structure are easily caused, and therefore, an expansion joint is reserved on the bridge to prevent the bridge structure from being damaged due to the temperature change. However, in a humid environment, moisture easily permeates into the bridge along the expansion joint, so that welding points in the bridge are welded and corrosion is caused to the steel bar structure in the bridge. The most type is butt joint type expansion joint applied to the bridge at present, the butt joint type expansion joint is built in by utilizing steel members with different shapes, then rubber strips with different types are embedded, the rubber strips or rubber strips are deformed by pulling and pressing, but two ends of the rubber strips are embedded into steel pieces on two sides, after long-time use, the rubber strips are dug out when the rubber strips are required to be replaced under the condition of aging or damage, so that the time is very wasted, and in the construction process, due to the fact that the waterproof rubber strips are damaged, garbage dirt generated by construction and even particles fall onto the waterproof rubber strips with the damage until the particles fall under the bridge to easily cause safety accidents, and therefore a temporary protection rubber strip is required to be used in the process of repairing the expansion joint to achieve the protection measure. Based on the above, the utility model provides a bridge expansion joint structure to solve the problems existing in the prior art. Disclosure of utility model Therefore, the main purpose of the utility model is to provide a bridge expansion joint structure, so as to solve the problem that the waterproof adhesive tape is inconvenient to replace when the adhesive tape of the traditional expansion joint structure is aged or damaged. In order to achieve the above purpose, the technical scheme of the utility model is realized as follows: A bridge expansion joint structure installed between two adjacent bridge bodies, comprising: permanent protective structures are precast in the concrete structures of the bridge bodies at the two sides of the expansion joint; The support assembly is arranged at the opening position of the expansion joint through the permanent protection structure and comprises bearing steel, waterproof rubber strips and top steel, wherein the bearing steel is arranged on an extension bearing platform of the anti-falling reinforced steel plate, the top steel is detachably arranged on the bearing steel, and the waterproof rubber strips are arranged between the bearing steel and the top steel. In a preferred embodiment, the permanent protection structure comprises an anti-falling reinforced steel plate, is pre-buried in the bridge body through an anti-falling stirrup and extends to the outer side of one side of the expansion joint. In a preferred embodiment, the waterproof strip spans the opening of the expansion joint. In a preferred embodiment, the bearing steel is provided with a bolt hole, the upper part of the top steel is provided with a reaming hole and a threaded hole, and a locking bolt is inserted into the threaded hole and is in threaded connection with the bolt hole. In a preferred embodiment, the support steel is provided with a locating insert plate which is matched with a locating slot provided in the top steel. In a preferred embodiment, the contact surfaces of the bearing steel and the top steel are special-shaped surfaces, and special-shaped locking grooves are formed on the connecting surfaces after the bearing steel is connected with the top steel and are matched with the waterproof rubber strips. In a preferred embodiment, the support assembly further comprises a protective steel plate disposed between two adjacent roof steels at both sides of the expansion joint by means of a locating pin. In a preferred embodiment, a sliding groove is further arranged on one side of the protective steel plate, and the sliding groove is matched with the positioning bolt. In a preferred embodiment, the bridge expansion joint structure further comprises a temporary protection assembly, wherein the temporary protection assembly comprises a temporary protection rubber strip, and the temporary protection rubber strip is arranged between two top steels on two sides of the expansion joint and is matched with a clamping groove formed in the top steel. In a preferred