| 青岛海湾大桥局部索构件失效对结构的影响及对策研究 |
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| 引用本文： | 闫振国,邵新鹏,蔡建军,阮欣.青岛海湾大桥局部索构件失效对结构的影响及对策研究[J].上海公路,2011(4):36-39. |
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| 作者姓名： | 闫振国 邵新鹏 蔡建军 阮欣 |
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| 作者单位： | 1. 同济大学桥梁工程系,上海,200092
2. 山东高速青岛公路有限公司,山东青岛,266061 |
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| 基金项目： | 山东省交通厅科技计划项目(2008 R011) |
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| 摘 要： | 以青岛海湾大桥航道桥为背景，采用半动力分析方法，研究分析了悬索桥吊杆及斜拉桥拉索失效后对周边结构的影响。结果表明：悬索桥吊杆的强健性较斜拉桥斜拉索好，单根或两根吊杆失效时不影响结构整体安全；而对于斜拉索，在两限或三根拉索失效时，结构可能因主梁应力的储备不足而破坏。根据分析结果，制定了结构损伤等级，给出了相应管理养护措施...
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| 关 键 词： | 拉索失效 强健性 半动力分析方法 养护对策 |
Study on the impact and countermeasures of partial cable failure on the bridge structure of Qindao Bay Bridge |
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| YAN Zhenguo,SHAO Xinpeng,CAI Jianjun,RUAN Xin.Study on the impact and countermeasures of partial cable failure on the bridge structure of Qindao Bay Bridge[J].Shanghai Highways,2011(4):36-39. |
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| Authors: | YAN Zhenguo SHAO Xinpeng CAI Jianjun RUAN Xin |
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| Institution: | YAN Zhenguo,SHAO Xinpeng,CAI Jianjun,RUAN Xin |
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| Abstract: | Base on the channel bridges of Qingdao Bay Bridge,this paper studied the impact of partial cable failure on suspension and cable stayed bridges with semi-dynamic simulation methodology.The results indicate that the cable of suspension bridges shows better robustness than the cable of cable-stayed bridge,single or two cables failure does not affect the overall structure.For the cable-stayed bridge,when two or three cables failure,it may damage because of the compressive stress loss of main girder.According t... |
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| Keywords: | Cable failure Robustness Semi-dynamic simulation methodology Countermeasure |
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