重复荷载下高速铁路预应力混凝土箱梁模型的三维非线性有限元分析  

Three-dimensional Nonlinear Finite Element(FE) Analysis of High-speed Railway Prestressed Concrete Box Girder under Repeated Loading

作　　者：葛继平[1] 严平 张旭[3] 邹文宝 

机构地区：[1]上海应用技术学院城市建设与安全工程学院,上海201418 [2]中建国际(深圳)设计顾问有限公司,上海200233 [3]上海理工大学环境与建筑学院,上海200093

出　　处：《上海应用技术学院学报（自然科学版）》2012年第3期191-195,共5页Journal of Shanghai Institute of Technology: Natural Science

基　　金：铁道部科技研究开发计划项目(2010G007-J)

摘　　要：采用实体有限元方法分析预应力混凝土箱梁模型在重复荷载作用下的非线性力学反应。介绍了实体有限元方法分析预应力混凝土箱梁的关键技术。在裂缝分布、荷载位移滞回曲线、应变分布特征三个方面进行了有限元分析结果和试验结果的比较。结果表明:有限元计算得到的变形和破坏形态与试验结果基本一致,荷载位移滞回曲线也与试验结果吻合良好。The nonlinear mechanical response of prestressed concrete box girder model under repeated loading based on three-dimensional finite element method was analyzed. The key problems of three-di- mensional finite element method analysis of prestressed concrete box girder were introduced. The results of finite element analysis were put into comparison with those of experiments from three aspects including the crack distribution, load displacement hysteretic curves, and strain distribution character- istics. The results showed that deformation and failure patterns calculated from the finite element were basically consistent with that from experiment. And the calculated load displacement hysteretic curves were basically in good agreement with the test results.

关 键 词：重复荷载 预应力混凝土箱梁 非线性有限元 三维实体 

分 类 号：TU378.2[建筑科学—结构工程]