| 基于无应力状态法的零杆虚位移修正 |
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| 引用本文： | 田维锋,周水兴,秦镇.基于无应力状态法的零杆虚位移修正[J].重庆交通大学学报(自然科学版),2010,29(1):20-22,62. |
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| 作者姓名： | 田维锋 周水兴 秦镇 |
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| 作者单位： | 重庆大学,土木工程学院,重庆,400045;重庆交通大学,土木建筑学院,重庆,400074;重庆交通大学,土木建筑学院,重庆,400074;重庆公路工程质监站,重庆,400060 |
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| 基金项目： | 重庆市交委重点科研项目(WFKY-003-40117) |
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| 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。
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| 关 键 词： | 零杆单元 无应力状态法 虚位移 切线安装 误差修正 |
Modification of Virtual Displacement Based on Unstressed State Method |
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| TIAN Wei-feng,ZHOU Shui-xing,QIN Zhen.Modification of Virtual Displacement Based on Unstressed State Method[J].Journal of Chongqing Jiaotong University,2010,29(1):20-22,62. |
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| Authors: | TIAN Wei-feng ZHOU Shui-xing QIN Zhen |
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| Institution: | 1. School of Civil Engineering;Chongqing University;Chongqing 400045;China;2. School of Civil Engineering & Architecture;Chongqing Jiaotong University;Chongqing 400074;3. Chongqing Highway Engineering Quality Supervision Station;Chongqing 400060;China |
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| Abstract: | 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. |
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| Keywords: | death element unstressed state method virtual displacement tangent installation error modification |
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