| 真空-堆载联合预压加固软基简化计算方法 |
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| 引用本文： | 李豪,高玉峰,刘汉龙,彭劼,Mahfouz A H.真空-堆载联合预压加固软基简化计算方法[J].岩土工程学报,2003,25(1):58-62. |
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| 作者姓名： | 李豪 高玉峰 刘汉龙 彭劼 Mahfouz A H |
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| 作者单位： | 河海大学岩土工程研究所；河海大学岩土工程研究所 江苏南京210098；江苏南京210098； |
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| 摘 要： | 在深入了解真空预压机理和砂井地基固结理论的基础上 ,根据固结度等效的原则 ,推导了与单井固结理论等效的成层均质地基等效渗透系数 ,从而将复杂砂井地基转化为无砂井成层地基 ,以达到简化计算的目的 ,并结合真空-堆载联合预压的加固特点 ,提出一种简化的真空-堆载联合预压法的有限元计算方法 ,并结合工程实例对简化方法的可靠性进行了研究 ,通过与实测资料和常规砂井地基有限元计算值对比 ,表明该简化方法具有较高的准确性 ,可方便地应用于工程设计和实践。
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| 关 键 词： | 真空-堆载联合预压法 砂井地基 简化方法 有限元 |
| 文章编号： | 1000-4548(2003)01-0058-05 |
| 修稿时间： | 2002年5月16日 |
Simplified method for subsoil improved by vacuum combined with surcharge preloading |
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| LI Hao,GAO Yufeng,LIU Hanlong,PENG Jie,Mahfouz A H.Simplified method for subsoil improved by vacuum combined with surcharge preloading[J].Chinese Journal of Geotechnical Engineering,2003,25(1):58-62. |
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| Authors: | LI Hao GAO Yufeng LIU Hanlong PENG Jie Mahfouz A H |
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| Affiliation: | Geotechnical Institute Hohai University Nanjing 210098 China |
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| Abstract: | Based on the mechanism of vacuum preloading and the consolidation theory for ground improved by PVD/sand drains improved ground,with equivalent vertical hydraulic conductivity, the ground can be converted into multi layered homogeneous subsoil, and a simplified method for vacuum combined with surcharge preloading is proposed. By comparing with the measured data and conventional FEM analysis in two case histories, the simplified method is verified and is more convenient to be used in engineering design. |
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| Keywords: | vacuum combined with surcharge preloading PVD/sand drains improved ground simplified method FEM |
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