摘要
以都江堰至汶川高速公路上的庙子坪岷江大桥引桥部分的一跨简支梁为例来研究简支梁桥主梁与横向挡块在地震作用下的非线性碰撞效应,采用大型有限元软件进行数值模拟分析,主要研究了主梁与挡块之间的间隙和阻尼系数对非线性碰撞效应的影响。通过分析得出:主梁与挡块之间的间隙(gap)对碰撞效应的影响是个不确定因素;考虑阻尼能有效地减小碰撞效应,且阻尼对减小挡块与主梁之间的间隙是有利的。
In this paper, the purpose is to use a simply supported beam bridge of Minjiang River Bridge at the Miaoziping along the Dujiang＇yan to Wenchuan highway as an example to study nonlinear collision effect between the simply supported beam and block under earthquake, which has used large - scale finite element software to carry on the numerical simulation analysis. And this paper has studied the factors of the nonlinear collision effect, including the gap between the simply supported beam and block and damping coefficient. It is obtained by analysis： the gap between the simply supported beam and block to the collision effect is uncertain factors; and considering damping effect can reduce the collision effect, and the damping is beneficial to reduce the gap between the simple beam and block.
出处
《广东公路交通》
2010年第3期37-41,共5页
Guangdong Highway Communications
关键词
桥梁
高墩
地震
非线性碰撞效应
bridge
high - pier
earthquake
nonlinear collision effect
