连续刚构桥弹塑性时程反应分析

Analysis of the Elastic-plastic Time History Response in Continuous Rigid Frame Bridge

本文以松花江特大桥为工程背景，根据现有的抗震非线性理论研究，弯矩-曲率滞回特性曲线可采用Takeda（武田）三线性模型，并给出了8度区罕遇地震下的弹塑性时程的反应分析，对罕遇地震下的抗震能力进行了评估。

This article takes the Songhua river bridge as the engineering background. Bases on the existing seismic non-linear theory, the author study that the bending moment-curv-ature hysteretic characteristic curve can use the Takeda （Tak-eda） three linear models and gives the elastic-plastic time history response analysis under the 8 degrees area under severe earthquake, and evaluates the aseismic ability under severe earthquake.