Seismic energy dissipation structure of multi-column bridge piers

Abstract

The invention provides an earthquake energy dissipation structure of a multi-pillar pier. The earthquake energy dissipation structure of the multi-pillar pier aims to improve the vibration reducing performance of a bridge so that the bridge keeps the structural integrity after an earthquake. The earthquake energy dissipation structure of the multi-pillar pier comprises a left side pier pillar (11) and a right side pier pillar (12) which are adjacent to each other, wherein an energy dissipation cross tie beam (20) is arranged between the left side pier pillar (11) and the right side pier pillar (12) or a plurality of energy dissipation cross tie beams (20) are longitudinally arranged at intervals between the left side pier pillar (11) and the right side pier pillar (12); the energy dissipation cross tie beam (20) comprises a steel structure cross beam (22), and soft steel energy dissipation members which are fixedly arranged at the two longitudinal ends of the steel structure cross beam (22); the soft steel energy dissipation members are connected with the left side pier pillar (11) and the right side pier pillar (12).

Description

Technical field [0001] The invention relates to a bridge damping structure, in particular to a multi-pillar bridge pier seismic energy dissipation structure. Background technique [0002] Summarizing the development history of structural anti-seismic technology, it can be divided into three methods: "resistance", "elimination" and "isolation". The so-called "resistance" refers to the development of high-performance structural materials and high-performance structural components, such as high-strength concrete, high-strength steel bars, high-strength steel, steel section concrete structures, and concrete-filled steel tube structures, starting from improving the seismic performance of the structure itself. The so-called "dissipation" refers to the use of structural anti-seismic control ideas, adding energy dissipation elements to the structure to help the structure consume seismic energy. Energy dissipation elements such as metal dampers, friction dampers, viscoelastic dampers, vis...

AI Technical Summary

Problems solved by technology

However, the cost of lead core bearings is high, and it has not been widely used since its inception. Although the ductile design method can avoid bridge collapse, the permanent deformation of the plastic hinges will cause serious damage to the bridge piers, making it difficult to repair immediately after the earthquake, thus losing the post-disaster bridge. much-needed transport function

[0003] Following the idea of ​​ductility design, the method of using the connecting beam device for shock absorption is also applied, but the connection between the two thin-walled piers will fail after the connecting beam enters the plasticity, and the stability of the bridge pier cannot be guaranteed. more severely damaged, even collapsed

At the same time, the damaged coupling beams are difficult to repair, even if they can be repaired, the economic cost and time cost are very high

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