新型双薄壁墩抗震体系研究

Research on Anti-Seismic System of New Double Thin-Wall Pier

基于多跨刚构桥横向抗震不利的问题,提出一种新型双薄壁墩抗震体系。结合实际工程,对比连续梁延性体系和传统双薄壁墩体系,对新型抗震体系的抗震性能等进行综合评判。通过对墩高参数的敏感性分析,得到新型抗震体系的合理适用范围,及在合理适用范围内具有较高的推广应用价值。

Based on the unfavorable lateral seismic resistance of multi-span rigid frame bridge,a new type of seismic system with double thinwallpiers is proposed. Combined with the actualproject, the seismic performance of the newseismic system is comprehensively evaluated bycomparing the continuous beam ductility systemwith the traditional double thin-wall pier system.Through the sensitivity analysis of pier heightparameters, the reasonable scope of applicationof the new aseismic system is obtained, and it hashigh application value.