Shock insulation structure suitable for abutment rigid frame bridge and construction method

Abstract

The invention relates to a shock insulation structure suitable for an abutment rigid frame bridge and a construction method. The shock insulation structure comprises a thin-wall flexible main abutmentand a thin-wall flexible secondary abutment which are arranged at intervals, wherein the secondary abutment is mounted on the ground; a bearing platform is arranged at the lower end of the thin-wallflexible main abutment; the bearing platform is arranged at the upper end of the pile foundation; a notch for accommodating the lower end of the thin-wall flexible main abutment is formed in the bearing platform; a shock insulation support for supporting the thin-wall flexible main abutment is arranged at the bottom of the notch; a water-resisting layer is arranged between each peripheral side wall of the notch and the periphery of the lower end of the thin-wall flexible main abutment; and the upper part of an area defined by the thin-wall flexible main abutment and the secondary abutment is sealed by a guide beam. According to the design, the structure is simple; the design is reasonable; the construction is convenient; the replacement is easy; the manufacturing cost of the shock insulation support is low; the shock resistance and the deformation capacity of the seamless bridge are improved; the seamless bridge is suitable for a strong earthquake area; the earthquake response and thedamage to the bridge are reduced; and meanwhile, the requirement of large deformation is also met.

Description

technical field [0001] The invention relates to a shock-isolation structure and a construction method suitable for an abutment rigid frame bridge. Background technique [0002] Bridges play a very important role and are very important social public infrastructure. It is characterized by huge investment, strong publicity, and difficult maintenance and management. Bridges are not only the authority structure for transporting and transporting people and materials in national economic activities, but also play a very important role in rescue, assistance and earthquake recovery after earthquake damage. The bridge is known as a lifeline project, and it is very important to ensure or substantially guarantee the function of the bridge when it encounters an earthquake. Due to the severe damage and collapse of the bridge structure in the earthquake, the adverse effects often exceed the funds and manpower required for the reconstruction or maintenance of the bridge. Therefore, it is i...

AI Technical Summary

Problems solved by technology

However, the expansion device installed at the expansion joint is exposed to the outside for a long time, which is easy to cause early damage. It is not only the most vulnerable and difficult to repair part of the bridge structure, but also may cause a large impact load of the vehicle and deteriorate the driving quality. condition, reducing the service life of the bridge

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