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减隔震技术应用在桥梁结构中,可以减轻结构遭遇强震时的破坏程度,显著提高其安全性。特别对于矮墩特大跨径连续梁桥,由于其上部结构质量和下部结构刚度均较大,导致地震水平力巨大,正常桥墩尺寸和配筋很难满足受力要求。本文以109 m+168 m+109 m PC连续箱梁桥为研究对象,提出在特大跨径连续梁桥中使用减隔震技术的必要性和有效性,介绍减隔震支座设计过程中应考虑的问题和解决方法。
The seismic isolation technology is applied in the bridge structure, which can reduce the damage degree of the structure in case of strong earthquakes and improve the safety remarkably. Especially for the short pier with large span continuous girder bridge, due to its superstructure quality and lower structural rigidity are large, resulting in huge horizontal seismic force, the normal pier size and reinforcement is difficult to meet the force requirements. The paper takes the 109m + 168m + 109m PC continuous box girder bridge as the research object, and puts forward the necessity and effectiveness of using the seismic isolation technology in the super long span continuous girder bridge. In this paper, Considerations and solutions.