摘要
已有的计算预应力斜腿刚构桥结点应力都是基于梁理论得到的,忽略了箱梁剪力滞效应的影响。本文采用ANSYS软件,对预应力混凝土斜腿刚构桥结点应力进行有限元分析,重点研究了箱梁与斜腿刚结区域结点应力分布以及荷载工况对结点应力值的影响。研究结果表明,刚结区域箱梁存在剪力滞效应比较明显。
The existing calculation method for joint stress of prestressed slant legged rigid frame bridge was established on the basis of the beam theory, which neg lected the influence of shear lag effect of box girder. In this paper, the finite element analysis software ANSYS was adopted to analyze the prestressed concrete slantlegged rigid frame bridge, the joint stress distribution of box girder and slant leg and the in fluence of load working condition on joint stress value were studied emphatically. The analysis result indicates that the box girder at the joint exists remarkable shear lag effect.
出处
《工程建设》
2013年第3期32-34,40,共4页
Engineering Construction
关键词
斜腿刚构
结点应力
剪力滞
实体单元
slant-legged rigid frame bridge
joint stress
shear lag
solid element
