钢桁腹式混凝土组合箱梁桥的空间梁格模型  

Spatial Grillage Model for Steel Truss-Web and Concrete Composite Box-girder Bridge

作　　者：黄华琪[1] 张建东[2] 刘钊[1] 

机构地区：[1]东南大学土木工程学院,江苏南京210096 [2]江苏省交通科学研究院股份有限公司,江苏南京211112

出　　处：《现代交通技术》2011年第6期27-30,43,共5页Modern Transportation Technology

基　　金：江苏省自然科学基金项目(项目编号:BK2009028)

摘　　要：为更加合理地开展钢桁腹式混凝土组合箱梁桥的设计,通过对比已有分析模型的优缺点,提出了钢桁腹式混凝土组合箱梁桥的空间梁格模型。介绍了空间梁格模型的建模思路,并参考Hambly关于梁格建模的基本原则,提出了适用于空间梁格模型的建模方法。通过应用示例,展示了基本空间梁格和精细化空间梁格的建模方法,并与实体有限元模型进行对比。结果表明:对于结构整体分析,基本空间梁格就能满足要求;而对于横向分析,则需采用更为精细化的空间梁格模型。In order to find a more, rational design method for the steel truss-web and concrete composite box-girder bridges,a spatial grillage model is presented as a result of comparing the advantages and shortcomings with current models. The modeling strategy and method are proposed following the Hambly＇s basic principles of grillage model. Furthermore,the modeling procedures of basic spatial grillage model and fine spatial grillage model are illustrated with examples. By comparing with the results of finite element model, it is found that basic spatial grillage mode can meet the requirements of longitudinal analysis whereas fine spatial grillage mode is good for a better transversal analysis.

关 键 词：组合箱梁桥 钢桁腹式结构 空间梁格模型 设计 

分 类 号：U448.216[建筑科学—桥梁与隧道工程]