期刊论文

Cao, G.(cgfcivil@163.com)

中文

中南大学学报(自然科学版)

1672-7207

2014

45

2

615-621

湖南省高等学校科学研究项目（重点项目）（12A027）；

本校为第一且通讯机构

对悬索吊桥的结构性能进行空间非线性有限元分析,并通过静力荷载试验,将实测变形与数值分析结果进行对比。研究结果表明:结构变形试验结果与仿真结果接近,说明该有限元分析方法可精确地模拟出悬索吊桥成桥后的受力状态,对其受力性能评估具有较高可靠性;各测点变形实测值均小于仿真值,说明柔性悬索吊桥受力性能良好。且得到从主索3L/8和5L/8(L为桥梁主跨)截面向跨中截面趋近时,主索垂度增量与跨中施加荷载和张力的增量基本呈线性关系,几何非线性特性不明显;从主索3L/8和5L/8截面向端部截面趋近时,几何非线性特性更加突出;在主索L/4和3L/4截面附近,增加单位垂度所需跨中荷载量和张力逐渐减少;在主...

The spatial nonlinear analysis of structural performance of the suspension bridge was carried out by using finite element program. Then, through the static loading test, the measured values of displacement were compared with the numerical results. The results show that the measured values are close to the simulation values, thus the finite element analysis method can accurately simulate the stress state, and it has high reliability in evaluating the mechanical properties of the flexible suspension bridge. All measured values are smaller than the simulation values, which indicates that the main...