| 路堤荷载下刚-柔性桩复合地基应力特性研究 |
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| 引用本文： | 朱奎,徐日庆,毛西平,张天山.路堤荷载下刚-柔性桩复合地基应力特性研究[J].煤田地质与勘探,2005,33(6):46-49. |
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| 作者姓名： | 朱奎 徐日庆 毛西平 张天山 |
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| 作者单位： | 1. 浙江大学,浙江,杭州,310027
2. 温州东瓯建设集团有限公司,浙江,温州,325000 |
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| 摘 要： | 介绍了温州瓯海大道桥头路堤采用低强度砼桩和水泥搅拌桩组合复合地基处理桥头跳车问题.通过在路堤下埋设钢弦式压力盒,获得了路堤下低强度砼桩、水泥搅拌桩以及土的应力比数值随时间的变化规律,并分析了三者荷载分担比随时间的变化特性.现场测试结果还表明,路堤荷载下桩土应力比要比刚性承压板下小得多,其研究成果可为路堤下刚-柔性桩复合地基设计提供有益参考.
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| 关 键 词： | 刚-柔性桩复合地基 桩土应力比 荷载分担比 |
| 文章编号： | 1001-1986（2005）06-0046-04 |
| 收稿时间： | 2005-03-24 |
| 修稿时间： | 2005年3月24日 |
Characteristic study on composite foundation with rigid-flexible piles under the load from embankment |
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| ZHU Kui,XU Ri-qing,MAO Xi-ping,ZHANG Tian-shan.Characteristic study on composite foundation with rigid-flexible piles under the load from embankment[J].Coal Geology & Exploration,2005,33(6):46-49. |
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| Authors: | ZHU Kui XU Ri-qing MAO Xi-ping ZHANG Tian-shan |
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| Institution: | 1. Department of Civil Engineering, Zhejiang University, Hangzhou 310027, China ; 2. Wenzhou Dongou Construction Group Limited Company, Wenzhou 325000, China |
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| Abstract: | This paper introduces a successful application of the composite foundation with low-strength-concrete pile and cementmixed pile in Ouhai mad of Wenzhou to alleviate bridge-head jump. Through pressure metre under embankment, the magnitude of pile-soil stress ratio and its variation with the time are measured, and the variation of pile-soil load share ratio with time is analyzed. Furthermore, the measured results in site show that the measured pile-soil stress ratio under flexible foundation is much less than that under rigid foundation. The conclusion can provide valuable preference for the design of the composite ground under embankment. |
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| Keywords: | composite foundation with rigid-flexible piles pile-soil stress ratio load share ratio |
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