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| 长短桩复合地基承载力发挥系数取值研究 | |
| 引用本文： | 杨明,张可能,杨庆光,刘杰.长短桩复合地基承载力发挥系数取值研究[J].防灾减灾工程学报,2009,29(1). |
| 作者姓名： | 杨明 张可能 杨庆光 刘杰 |
| 作者单位： | 1. 中南大学地学与环境工程学院,长沙,410083;广州市南沙区建设工程质量安全监督站,广州,511455 2. 中南大学地学与环境工程学院,长沙,410083 3. 湖南工业大学岩土工程研究所,湖南,株洲,412008 |
| 摘 要： | 根据水泥土长短桩复合地基试验结果,得到了考虑荷载水平的水泥土长短桩复合地基承载力计算公式。然后,考虑复合地基中桩体、桩间土和复合地基沉降量之间的相互关系,利用现场载荷试验成果,对单桩复合地基和长短桩复合地基的桩间土承载力发挥系数和合理的s/b取值范围进行了对比研究,得到了长短桩复合地基桩间土承载力发挥系数的计算方法。结果表明:长短桩复合地基桩体先于桩间土出现破坏,桩体极限荷载点对应的复合地基s/b值为s/b的上限;当垫层模量Ec为100M Pa时,长短桩复合地基s/b上限为0.0034,对应的桩间土承载力发挥系数为0.29。 |
| 关 键 词： | 水泥土桩 复合地基 承载力特征值 承载力发挥系数 |
Study on Bearing Mobilization Coefficient of Long-Short Piles Composite Foundation |
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| YANG Ming,ZHANG Ke-neng,YANG Qing-guang,LIU Jie.Study on Bearing Mobilization Coefficient of Long-Short Piles Composite Foundation[J].Journal of Disaster Prevent and Mitigation Eng,2009,29(1). | |
| Authors: | YANG Ming ZHANG Ke-neng YANG Qing-guang LIU Jie |
| Institution: | YANG Ming1,2,ZHANG Ke-neng1,YANG Qing-guang1,LIU Jie3(1.Department of Geosciences and Environmental Engineering,Central South University,Changsha 410083,China,2.Guangzhou-Nansha Construction Quality & Safety Supervision Station,Guangzhou 511455,3.Research Institute of Geotechnical Engineering,Hunan University of Technology,Zhuzhou 412008,China) |
| Abstract: | Based on the results of static load test in-suit,a formulas for characteristic value of bearing capacity in cement-soil long-short piles composite foundation has been deduced in this paper.According to the dispalcement relationship of piles,soil and foundation,then,a method has been achieved after studing bearing mobilization coefficient of surgrade and suitable s/b for characteristic value of bearing capacity of single-pile composite foundation and long-short piles composite foundation.It has been revealed... |
| Keywords: | cement-soil pile composite foundation characteristic value of bearing capacity bearing mobilization coefficient |
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