某大跨度斜拉桥钢箱梁第二体系应力合理计算模型的确定  

Determination of Reasonable Calculation Model for Second System Stress of Steel Box Beam of a Long- span Cable- stayed Bridge

作　　者：余振[1] 

机构地区：[1]安徽省交通规划设计研究总院股份有限公司,安徽合肥230088

出　　处：《城市道桥与防洪》2015年第10期27-32,12,共6页Urban Roads Bridges & Flood Control

摘　　要：钢箱梁第二体系应力计算包括两大类方法:简化解析法和数值解析法。三维有限元法作为数值解析法的一种,随着计算机的发展和有限元法的成熟愈来愈受到关注。为了能较准确、有效地模拟实际结构需要确定合理的计算模型,通过研究纵向加载范围、计算模型长度、边界约束条件等第二体系应力的影响因素,探讨合理计算模型的取法。The second system stress calculation of steel box beam has two methods of simplified analysis method and numerical analysis method. The 3- D finite element method is one of numerical analysis method,which is more and more paid attention with the development of computer and the maturity of finite element method. In order to correctly and effectively simulate the reasonable calculation model necessarily ensured for the actual structure, and according to the study on the influence factors of the second system stress of longitudinal loading range, calculation model length and edge- restrict condition, the article discusses the selection of reasonable computation model.

关 键 词：第二体系 解析法 有限元法 合理计算模型 

分 类 号：U442.3[建筑科学—桥梁与隧道工程]