干接缝节段拼装桥墩抗震分析的纤维模型模拟方法  

Seismic performance analysis of segmental bridge columns with match-cast dry joints using fiber beam-column element method

作　　者：葛继平[1] 王志强[2] 魏红一[2] 

机构地区：[1]上海应用技术学院,上海200235 [2]同济大学,上海200092

出　　处：《振动与冲击》2010年第3期52-57,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50508032);上海市优秀青年科研专项基金(YYY09007)

摘　　要：针对节段拼装桥墩的构造特点,对节段拼装桥墩涉及到的接缝,有粘结预应力钢筋,无粘结预应力钢筋,耗能钢筋等特殊问题进行了仔细的分析比较,在此基础上给出了适宜的模拟方法,然后分别对拟静力试件和振动台试件进行了非线性有限元分析,比较了纤维模型分析结果与试验结果的异同。与试验结果的比较表明:纤维模型分析方法是分析节段拼装桥墩抗震性能的有效近似分析方法。Considering the construction peculiarties of precast segmental bridge columns,the special problems with regard to the joints,the bonded prestressing tendons,the unbonded prestressing tendons and the energy-dissipating device,were studied.On this basis,the fitted analysing method,the fiber beam-column element method,was provided,with which the specimens were analyzed under cyclic loading and nonlinear dynamic time history loading.Comparing with the experimental results,the method proposed is reasonable and effective for precast segmental bridge columns.

关 键 词：节段拼装 干接缝 振动台试验 耗能钢筋 抗震性能 

分 类 号：TU375[建筑科学—结构工程]