Simple seamless expansion joint structure of bridge

Abstract

The invention relates to a bridge simple type seamless expansion joint structure which comprises two adjacent concrete bridge deck slabs, a beam end gap is formed between the two adjacent concrete bridge deck slabs, and bridge deck pavement layers are paved on the top surfaces of the two adjacent concrete bridge deck slabs. A filling groove communicated with the beam end gap is formed between the two bridge deck pavement layers, a transition steel plate covering the beam end gap is fixed to the bottom of the filling groove, an arch-shaped steel plate is fixed to the upper portion of the transition steel plate, and a stress plate is fixed to the top face of the arch-shaped steel plate. The upper portion of the arch-shaped steel plate is filled with high-elasticity sealing joint sealing materials flush with the top face of the bridge deck pavement layer. The arch-shaped steel plate and the stress plate are arranged, when an automobile rolls the expansion joint, the stress area of the high-elasticity sealing joint sealing material is reduced through stress of the stress plate, the pressure intensity is reduced, and the possibility that the high-elasticity sealing joint sealing material is stressed and cracks are formed on the vertical interface of the bridge deck pavement layer is reduced.

Description

technical field [0001] The invention relates to the technical field of bridge seamless expansion joints, in particular to a simple bridge seamless expansion joint structure. Background technique [0002] In order to ensure that the bridge structure can be freely deformed under the influence of vehicle live load, concrete shrinkage and creep, temperature changes and other factors, it is necessary to set transverse deformation joints between the beam end and the back wall of the abutment or between the beam ends of the two-span bridge. , This is the bridge expansion joint. There are many types of bridge expansion joints, and the structure is complex and simple. The expansion devices are divided into: modular expansion devices, comb-tooth plate expansion devices, and seamless expansion devices according to their structure. Both the device and the comb-tooth plate telescopic device are composed of special-shaped steel and rubber materials. These two types of expansion devices ar...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a simple bridge seamless expansion joint structure, which has the advantages of anti-cracking and long service life, and solves the problem that the current traditional seamless bridge expansion joints are exposed on the surface of the bridge deck and directly bear the vehicle The effect of load, if things go on like this, the joint filler in contact with the upper edge of the steel plate and the joint filler in contact with the vertical interface of the bridge deck pavement will crack under the action of temperature and load

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