高烈度区高墩大跨桥梁抗震设计

Seismic Design of High-pier and Long-span Bridge in High Earthquake Intensity Area

以高烈度区一座高墩大跨桥梁为例,采用非线性时程分析法,对其结构动力特性及抗震性能进行分析,得出不同约束情况下的全桥地震响应,从而对该桥提出相对合理的抗震设计理念和思路。同时,探讨了大跨高墩连续刚构桥的延性设计方法。

Taking a high-pier and long-span bridge in high earthquake intensity zones as an example,the non-linear temporal analysis method was used to analyze its structural dynamic characteristics and seismic performance,and the seismic response of the whole bridge under different constraints was obtained,thus putting forward relatively reasonable seismic design concepts and ideas for the bridge. The ductility design method of the long-span high pier and continuous rigid frame bridge was also introduced.