Steel-concrete composite structure pier suitable for high-intensity area and construction method of steel-concrete composite structure pier

Abstract

The invention discloses a steel-concrete composite structure pier suitable for a high-intensity area and a construction method of the steel-concrete composite structure pier, and relates to the field of bridge construction. The structure pier comprises a pier supporting column, a reinforcement cage is arranged in the pier supporting column, the reinforcement cage comprises main reinforcements and stirrups, a cavity surrounded by the reinforcement cage is formed in the pier supporting column, steel plates are fixed to the inner side walls of the cavity, shear keys are fixed to the steel plates, and the shear keys are inserted into concrete and fixedly connected with the reinforcement cage. Through arrangement of the shear keys, the steel plates and the concrete interact, and the bearing capacity of the cross section of the pier is improved; the arrangement of the inner cavity provides space for the arrangement of the steel plates, the dead weight of the pier is reduced, and the structural response of the pier under the seismic load is reduced.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a bridge pier with a steel-concrete composite structure suitable for high-intensity areas and a construction method thereof. Background technique [0002] my country is a country with a high incidence of earthquakes, and there are mainly large seismic belts in the territory: the circum-Pacific seismic belt, the southeast coastal seismic belt, the North China seismic belt, the North-South seismic belt, the Qinghai-Tibet Plateau seismic belt, and the Northwest seismic belt. Especially for Sichuan, Qinghai, Gansu and other areas with steep mountains and ravines, the seismic intensity is high, and highway and railway projects usually have a high bridge-to-tunnel ratio, and high-pier bridges abound. Therefore, how to improve the safety of the bridge substructure in these high-intensity areas has become the key to design. [0003] The design and structure of high piers commonly seen...

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Problems solved by technology

[0003] The design and structure of high piers commonly seen in high-intensity areas are complex, the construction process is complicated, and the construction quality is difficult to guarantee; or the direct use of steel structure piers can ensure the bearing capacity of the piers, but there are problems of large maintenance workload and difficult maintenance

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