斜交框架地道桥的力学特性  

Mechanic Character of Frame Tunnel Bridge with Skew Angle

作　　者：王丽[1] 季日臣[1] 伊新芳[1] 谢讼诗[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《甘肃科学学报》2009年第1期132-134,共3页Journal of Gansu Sciences

基　　金：兰州交通大学"青蓝"人才工程基金(QL-05-13A)

摘　　要：运用ANSYS有限元分析软件,采用板壳有限元模型进行空间分析.提出了斜交框架地道桥在垂直跨度与垂直宽度不变的情况下顶板钝角处、锐角处负弯矩及桥跨中心线的中点正处弯矩随斜交角度的变化规律;同时还提出了Winkler地基上的斜交框架地道桥在不同地基条件下对顶板及底板内力的影响,所得结论对地道桥的设计思路有一定的参考价值.By using the ANSYS software of finite element analysis a spatial analysis is made to establish a shell finite element model. In the case of the same vertical span and vertical width of the tunnel bridge with skew angle, the rules of transformation at the negative moments at obtuse-angle and acute angle and at the midpoint of the centralline are presented. The tunnel bridge with skew angle on the Winkler foundation can affect the internal force distribution on the ceiling and floor under different ground conditions.

关 键 词：地道桥 框架桥 板壳单元 斜交角 受力分析 

分 类 号：U448.12[建筑科学—桥梁与隧道工程]