High performance aseismatic bridge pier structure system with replaceable plastic hinge

Abstract

The invention discloses a high performance aseismatic bridge pier structure system with replaceable plastic hinge and belongs to the field of bridge engineering. The high performance aseismatic bridgepier structure system comprises a bearing platform, a replaceable plastic hinge section, a reinforced concrete bridge pier section and the like. A anchor bar and a connecting sleeve are pre-embeddedin the bearing platform; the replaceable plastic hinge section comprises a PVC pipe, a SMA bar and a high-strength steel bar, a stirrup, a high-ductility concrete, a lower connecting plate, an upper connecting plate and the like; and the reinforced concrete bridge pier section comprise a longitudinal bar, a stirrup, an ordinary concrete, a bottom connecting plate and the like. The bearing platformis connected with the lower connecting plate of the replaceable plastic hinge section through a high-strength bolt, and the upper connecting plate of the replaceable plastic hinge section is connected with the bottom connecting plate of the reinforced concrete bridge pier section through the high-strength bolt. The high performance aseismatic bridge pier structure system with replaceable plastichinge has better bending rigidity, bearing capacity and energy consumption capacity under normal use conditions and earthquake. The replaceable plastic hinge section can be easily replaced and repaired after the earthquake.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a high-performance anti-seismic pier structure system with replaceable plastic hinges. Background technique [0002] my country is an earthquake-prone country, located between the circum-Pacific seismic belt and the Eurasian seismic belt. As an important part of lifeline engineering, once a bridge is damaged by an earthquake, it will cause serious casualties and economic losses, and it will be difficult to repair. In addition, bridge damage will also lead to traffic interruption, affecting the development of disaster relief work after the earthquake, making it impossible for rescuers to arrive in time, and relief supplies cannot be delivered in time, thus aggravating the degree of secondary disasters caused by the earthquake. Therefore, the seismic performance of bridges has received special attention. [0003] At present, in the pier structure based on the ductile aseismic de...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of insufficient seismic capacity of the plastic hinge area of ​​the bridge pier and the difficulty of post-earthquake repair, and to provide a high-performance seismic-resistant bridge pier structure system with replaceable plastic hinges

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