| 预应力混凝土连续箱梁底板崩裂破坏的机理及其对策 |
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| 引用本文： | 魏乐永,沈旭东,肖汝诚,谭红梅.预应力混凝土连续箱梁底板崩裂破坏的机理及其对策[J].结构工程师,2007,23(2):53-57. |
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| 作者姓名： | 魏乐永 沈旭东 肖汝诚 谭红梅 |
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| 作者单位： | 同济大学桥梁工程系,上海,200092 |
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| 摘 要： | 对某主跨为85 m预应力混凝土连续箱梁桥的合龙段底板崩裂情况进行了调查与分析,运用BAP、ANSYS等有限元软件进行了仿真模拟,分析了箱梁底板混凝土崩裂的机理,并提出了处理类似问题的对策.
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| 关 键 词： | 连续箱梁桥 底板崩裂 曲率效应 应力集中 预应力混凝土 连续箱梁桥 底板崩裂 破坏 机理 对策 Box Girder Prestressed Concrete Continuous Slab Bottom Cracking Prevention Countermeasures 问题 处理 底板混凝土 仿真模拟 有限元软件 ANSYS 运用 |
| 收稿时间： | 2006-04-24 |
| 修稿时间： | 2006年4月24日 |
Mechanism and Prevention Countermeasures of Cracking for Bottom Slab in a Continuous Prestressed Concrete Box Girder |
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| WEI Leyong,SHENG Xudong,XIAO Ruchen,TAN Hongmei.Mechanism and Prevention Countermeasures of Cracking for Bottom Slab in a Continuous Prestressed Concrete Box Girder[J].Structural Engineers,2007,23(2):53-57. |
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| Authors: | WEI Leyong SHENG Xudong XIAO Ruchen TAN Hongmei |
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| Affiliation: | Department of Bridge Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | The cracking situation of the bottom slab of the closing segment of a continuous prestressed concrete box girder with 85m main span is investigated and analyzed. Using the finite element software , such as BAP and ANSYS , structural simulation is presented. The cracking reason of the bottom slab of box girder is analyzed. Some countermeasures to the similar accidents are proposed . |
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| Keywords: | continuous box girder bottom slab creaking curvature effect stress concentration |
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