| 高桩承台裂缝有限元分析 |
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| 引用本文： | 乐云祥,常英.高桩承台裂缝有限元分析[J].公路交通科技,2005,22(2):63-66. |
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| 作者姓名： | 乐云祥 常英 |
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| 作者单位： | 1. 同济大学桥梁工程系,上海,200092
2. 湖北省交通规划设计院,湖北,武汉,430051 |
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| 摘 要： | 高桩承台结构的裂缝验算,各国现行规范均按简化方法处理。结合某桥设计实践,为全面了解该桥高桩承台结构的开裂荷载及受力后台身裂缝开展的情况,采用分布式裂缝模式,对高桩承台的裂缝开展进行了模拟。分析结果显示,高桩承台桩顶处反力集中现象较为突出,裂缝的开展有明显的规律性,建议在此类结构的设计中采取相应工程措施来消除桩顶的应力集中以约束裂缝的开展。
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| 关 键 词： | 高桩承台 裂缝 分布式裂缝模式 |
| 文章编号： | 1002-0268(2005)02-0063-04 |
| 修稿时间： | 2003年12月2日 |
Finite Element Analysis of Cracks of an Elevated Pile Foundation |
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| YUE Yun-xiang,CHANG Ying.Finite Element Analysis of Cracks of an Elevated Pile Foundation[J].Journal of Highway and Transportation Research and Development,2005,22(2):63-66. |
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| Authors: | YUE Yun-xiang CHANG Ying |
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| Abstract: | Checking computations of cracks of the elevated pile foundations,are specified in the codes worldwide nowadays in terms of simplified theories.Incorporated with the design of a bridge,for the sake of overall comprehending the cracking loads of an elevated pile foundation and the development of concrete cracks in the structure under loads,the development of concrete cracks was simulated by means of the smeared cracking approach.The result clearly revealed that stress concentrated around the upper butt of the piles,and cracks regularly developed as well.It is strongly recommended that some effective measures against stress concentrated phenomenon should be taken in order to restrain the development of cracks. |
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| Keywords: | Elevated pile foundation Cracks Smeared cracking approach |
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