Analysis of Seismic Resistance Capacity of Cable-stayed Bridge with Three Pylons Based on Plastic Hinge Model
Wang Long-fei1, Wang Xian-zhi2
1.Hubei Key Laboratory of Roadway Bridge & Structure, Wuhan University of Technology, Wuhan 430070, China; 2.Guangdong Technical College of Water Resources and Electric Engineering, Guangzhou 510635, China
Abstract：Abstract: Considering the concrete crakes, reinforcement yielding and hysteretic effect of components of structure by adopting nonlinear plastic hinges, and using the language of APDL to write a bisection method program in order to make a computer can analyze a structure automatically and reduce much times of loop calculation, a method of analyzing seismic resistance capacity of cable-stayed bridge is established through increasing the seismic action step by step. Applying this method, this paper studies the seismic resistance capacity and responses of a composite girder cable-stayed bridge with three pylons under construction. The results show that the force responses in bottom of the middle pylon are much more than those in side pylons, but the deflection responses in top of the pylons causing by the seismic action are close and small, so increasing capacity of the middle pylon to resist earthquake can improve seismic resistance capacity of the whole bridge, the seismic resistance capacity in the model with plastic hinges is higher than that with no plastic hinges, and the bisection method program for loop calculation can reduce trivial manual operation work and times of loop calculation, so this method is convenient to analyze the seismic resistance capacity of large structures.
王龙飞;王仙芝. 基于塑性铰模型的三塔斜拉桥抗震能力时程分析[J]. , 2012, 31(15): 165-170.
Wang Long-fei;Wang Xian-zhi. Analysis of Seismic Resistance Capacity of Cable-stayed Bridge with Three Pylons Based on Plastic Hinge Model. , 2012, 31(15): 165-170.
2012, Vol. 31 
