动力弹塑性分析在桥梁工程中的应用

依据我国《建筑抗震设计规范》(GB50011-2001)和《公路桥梁抗震设计细则》(JTG/T B02-01-2008),以及弹性阶段承载力设计和弹塑性阶段变形验算的两阶段设计理论,使用MIDAS Civil 2006通用有限元程序进行某大桥动力弹塑性抗震分析,并对罕遇地震作用下的结构响应进行了综合评定并概括介绍了塑性铰区域纤维模型的建立方法和桩基础的模拟过程.

The Application Study of Dynamic Elastic-plastic Analysis in Bridge Engineering Practice

According to the Seismic Design Code （GB50011-2001） and Highway and Bridge Seismic Destgn Rutes （JTG/T B02-01-2008）, as well as the two-stage design theory of bearing capacity design in flexible stage and deformation checking computations in elastic-plastic stage, the dynamic elastic-plastic seismic analysis model of some bridge is established by using of ＂MIDAS Civil 2006 general finite element program＂, and the structural response under the rare earthquake is comprehensively assessed. The plastic hinge region fiber model and its using method, and simulation process of pile-soil-structure interaction are also generally introduced.