A Method of Restraining Expansion Joint Diseases of Cable-supported Bridges

Abstract

The invention discloses a device and method capable of restraining the expansion joint disease of a cable-supported bridge. The device comprises longitudinal damping equipment and vertical damping equipment, the longitudinal damping equipment is arranged perpendicular to the traveling direction of vehicles, and the longitudinal damping equipment is parallel to an expansion joint and arranged under the expansion joint. One end of the longitudinal damping equipment is fixedly connected with the lower surfaces of two adjacent beam bodies beside the expansion joint together, and the other end of the longitudinal damping equipment is fixedly connected with the upper surface of a bridge pier located on the lower portion of the longitudinal damping equipment. The vertical damping equipment is perpendicularly arranged at the ends, close to the expansion joint, of the beam bodies, the upper portion of the vertical damping equipment is fixedly connected with the lower surfaces of the beam bodies, and the point of junction of the upper portion of the vertical damping equipment and the lower surfaces of the beam bodies is located on the outer side, relative to expansion joint equipment, of the longitudinal damping equipment. The expansion joint equipment is arranged in the traveling direction of the vehicles. The lower portion of the vertical damping equipment is fixedly connected with the upper surface of the bridge pier. At present, a vertical damper is arranged between the beam bodies and the bridge pier, hence, the vertical damping effect is improved, rotation of the expansion joint is restrained, and the durability of the expansion joint is improved.

Description

technical field [0001] The invention relates to the field of civil structures, in particular to a device and method for suppressing expansion joint diseases of cable-supported bridges. Background technique [0002] In the design of bridge structures, expansion joints are usually set between the ends of the two girders of the bridge, and between the end of the girder and the abutment. Its function is to adjust the displacement and connection between the superstructure caused by the characteristics of the vehicle load environment and the physical properties of the bridge construction materials. [0003] Such as figure 1 As shown, the expansion joint device 01 is directly fixed in the pre-opened groove at the end of the beam 02, without any damping equipment between the two, and there is no damping equipment between the beams. With the increase of traffic volume and vehicle load As the weight increases, the expansion joints of the bridge deck are set at the weak part of the b...

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Problems solved by technology

[0003] like figure 1 As shown, the expansion joint device 01 is directly fixed in the pre-opened groove at the end of the beam 02, without any damping equipment between the two, and there is no damping equipment between the beams. With the increase of traffic volume and vehicle load As the weight increases, the expansion joints of the bridge deck are set at the weak part of the beam end structure, directly bear the repeated impact of the wheel load, and are exposed to nature for a long time, and the environment is relatively harsh. Due to the wear and fatigue of the material, and the concrete Insufficient bond strength of panels or beams, easily damaged and difficult to repair

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