大跨斜拉桥合理成桥状态非线性分析

Nonlinear analysis of reasonably completed state of long-span cable-stayed bridges

分析了斜拉桥几何非线性效应和材料非线性效应对成桥状态内力、变形和位移的影响。分析结果表明,在大跨斜拉桥的受力状态中,主要是材料非线性对桥梁主塔和主梁弯矩、位移的影响,而几何非线性因素的影响则并不明显。

This paper analyzes the influence of geometrical nonlinearity and material nonlinearity on response of large span cable-stayed bridge in reasonably completed state. The result displays that the material nonlinearity has a dominant influence on the moment and displacement of main beam and tower of the bridge and the influence of geometrical nonlinearity is unobvious.