摘要
分析了大跨径斜拉桥施工控制和结构分析中零杆虚位移的成因及其导致的计算误差,提出了基于无应力状态法理论的误差修正方法。通过算例验证,表明该方法是有效的,对于桥梁的有限元误差分析具有一定参考价值。
The causes of virtual displacement in long-span cable-stayed bridge construction control and structural analysis have been analyzed. The calculation errors which are resulted from the virtual displacement have also been described. The error modification method based on unstressed state theory is proposed. The effectiveness of the modified method has been verified through examples. The proposed method is of reference value for FEM error analysis of bridge.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2010年第1期20-22,62,共4页
Journal of Chongqing Jiaotong University(Natural Science)
基金
重庆市交委重点科研项目(WFKY-003-40117)
关键词
零杆单元
无应力状态法
虚位移
切线安装
误差修正
death element
unstressed state method
virtual displacement
tangent installation
error modification
