基床式大直径薄壁圆筒结构内力计算的弹簧元数值模型  

The Spring-element Numerical Model of Bed-seated Large-diameter Thin-walled Cylindrical Shell Structure's Internal Force Computation

作　　者：钟晓红[1] 周锡礽[1] 钱荣 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]宁波市港口管理局,浙江宁波315041

出　　处：《港工技术》2005年第1期22-25,共4页Port Engineering Technology

基　　金：国家自然科学基金资助项目 ( 5 990 90 0 5 );博士后基金资助项目 ( 2 0 0 2 0 0 5 60 3 0 )

摘　　要：将大直径薄壁圆筒结构基底与基床间的接触边界处理为一种新的数值接触模型——弹簧元模型 ,并运用大型通用有限元软件 ANSYS进行二次开发对薄壁圆筒结构的变形、基底应力与内力进行计算和分析。通过算例的计算与无基床沉降效应的全铰接模型和港工规范中重力式结构的常规计算方法进行了比较分析 。The contact boundary between the large-diameter thin-walled cylindrical shell structure with foundation bed can be treated as a new numerical model-spring-element model, and large-scale common finite element software-ANSYS can be used to compute and anylyse the deformation, internal force and the base stress of thin-walled cylindrical structure through second development. The engineering projecthas been calculated by the model. Compared with the entire-hinge model and the conventional designmethods of gravideional structure in harbour-rule, it is shown that this spring-element model is more rational and effective.

关 键 词：弹簧元模型 地基系数 薄壁圆筒结构 有限元计算 边界条件 内力计算 

分 类 号：TU333[建筑科学—结构工程]