Jointless bridge based on arc structure arranged behind bridge abutment and construction method thereof

Abstract

The invention relates to a jointless bridge based on an arc structure arranged behind a bridge abutment and a construction method thereof. The jointless bridge comprises a bridge span structure and a bridge abutment, wherein an arc structure is arranged behind the bridge abutment along the bridge direction, the arc springing at one end of the arc structure is connected to the end wall of a girder or the body of the bridge abutment while the arc springing at the other end is arranged on an independent foundation, and displacement transferred by the bridge span structure is absorbed by deformation of the arc structure. The method comprises the following steps of: 1, independently constructing foundations of the lower part structure of the bridge and the arc structure behind the bridge abutment far away from the bridge end; 2, constructing the upper part structure of the bridge; 3, constructing the arc structure behind the bridge abutment; 4, constructing a waterproof layer at the upper part of the arc structure; 5, constructing soffit packing; 6, paving a bridge deck and a road behind the bridge abutment. The jointless bridge is clear in stress, simple in structure and easy to construct, and can effectively avoid transferring the problem, that the joints at bridge ends are easy to damage, into the rod pavement structure when the bridge is jointless.

Description

technical field [0001] The invention relates to a bridge structure without expansion joints based on an arched structure arranged behind a platform and a construction method thereof. Background technique [0002] In the traditional bridge structure, in order to meet the requirements of the deformation of the bridge structure, expansion joints must be set between the ends of the two girders, between the end of the girder and the abutment, and a board must be set behind the abutment. However, the bridge expansion joint device and the back plate are often damaged, and vehicles passing through the damaged expansion joint device and the plate will further aggravate the situation, which has become a common problem in the actual operation of bridges at home and abroad. Tricky question. Jumping at the bridge head not only has a great impact on the bridge and the road surface, but also reduces the driving comfort of the driver and passengers. In addition, with the increasing traffi...

AI Technical Summary

Problems solved by technology

[0006] Based on the above problems, the conventional seamless bridge only transfers the fragile problem of the expansion joints of the slotted bridge to the approach part of the bridge head, and does not fundamentally solve the problem of the longitudinal bridge expansion joints of the bridge. The above problems undoubtedly become the needs of the seamless bridge development process. Key Technical Issues Solved

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