| PC系杆拱桥施工阶段暂态结构安全控制 |
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| 引用本文： | 李胜利,李广慧,王东炜.PC系杆拱桥施工阶段暂态结构安全控制[J].河南科学,2005,23(6):892-895. |
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| 作者姓名： | 李胜利 李广慧 王东炜 |
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| 作者单位： | 哈尔滨工业大学,黑龙江,哈尔滨,150000;郑州航空工业管理学院,河南,郑州,450015;郑州大学土木工程学院,河南,郑州,450002 |
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| 基金项目： | 国家自然科学基金资助项目(50178064) |
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| 摘 要： | 以某在建的PC系杆拱桥为研究对象,采用Ansys程序的几何非线性有限元接触分析方法,模拟系梁与支架的关系,建立了模拟该桥张拉吊杆施工过程的空间分析模型,采用三种加临时横撑的方案来控制施工时暂态结构的安全性,计算了张拉吊杆过程中三方案不同状态下结构的弯矩、位移及稳定系数,试图通过分析找到最佳的加临时横撑的方案,进而为整桥施工模型的建立和同类桥梁的施工控制提供参考.
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| 关 键 词： | 拱桥 有限元 几何非线性 接触分析 |
| 文章编号： | 1004-3918(2005)06-0892-04 |
| 收稿时间： | 2005-06-30 |
| 修稿时间： | 2005年6月30日 |
Security control of provisional structure of tied PC arch bridge at construction stage |
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| LI Sheng-li,LI Guang-hui,WANG Dong-wei.Security control of provisional structure of tied PC arch bridge at construction stage[J].Henan Science,2005,23(6):892-895. |
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| Authors: | LI Sheng-li LI Guang-hui WANG Dong-wei |
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| Institution: | 1. Harbin University of Technology, Harbin 150000, China; 2. Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou, 450015, China; 3. College of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China |
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| Abstract: | In this paper,a tied PC arch bridge is considered as the investigated structure.The contact analytical approach of the finite element analysis software Ansys is applied to set up three dimensional finite element computational model to simulate the relation of collar beam and bracket.Three schemes added temporary bracket are adopted to control the security of the transient structure during the construction.The bending moment,the displacement and the stability factor of three theme are counted during the stretching suspender at different mode to try to find a optimal scheme of the added temporary bracket and to supply the reference for the foundation of the construction model of the whole bridge and the construction control of the homogeneous bridge. |
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| Keywords: | arch bridge finite element geometrical nonlinearity contact analyses |
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