| 考虑桩体内径向渗流的复合地基固结解 |
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| 引用本文： | 卢萌盟,谢康和,王坤,齐添.考虑桩体内径向渗流的复合地基固结解[J].固体力学学报,2009,30(2). |
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| 作者姓名： | 卢萌盟 谢康和 王坤 齐添 |
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| 作者单位： | 1. 浙江大学软弱土与环境土工教育部重点实验室,杭州,310058
2. 广州穗监工程质量安全检测中心,广州,510150 |
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| 摘 要： | 考虑了桩体内径竖向组合渗流和涂抹区土体水平渗透系数的两种变化模式,得到了此类固结问题的控制方程.采用新的初始条件,得到了控制方程的解答,给出了桩周土体和桩体内的平均孔压.在此基础上,把桩体的固结压缩引人对复合地基总平均固结度的定义中,分别给出了复合地基按应力和按应变定义的总平均固结度.结果表明:按应力和按应变定义的复合地基的总平均固结度相等;考虑桩体内径向渗流比不考虑桩体内径向渗流的复合地基固结度要小,而且随着桩间距的增大,两者之间的差值逐渐减小;考虑涂抹区水平渗透系数逐渐变化比假定涂抹区水平渗透系数保持不变的复合地基的总平均固结度大.
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| 关 键 词： | 固结 复合地基 径向渗漉 水平渗透系数 |
ANALYTICAL SOLUTIONS FOR THE CONSOLIDATION OF A COMPOUND FOUNDATION WITH CONSIDERATION ON THE RADIAL FLOW WITHIN THE COLUMN |
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| Mengmeng Lu,Kanghe Xie,Kun Wang,Tian Qi.ANALYTICAL SOLUTIONS FOR THE CONSOLIDATION OF A COMPOUND FOUNDATION WITH CONSIDERATION ON THE RADIAL FLOW WITHIN THE COLUMN[J].Acta Mechnica Solida Sinica,2009,30(2). |
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| Authors: | Mengmeng Lu Kanghe Xie Kun Wang Tian Qi |
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| Institution: | 1 MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering;Zhejiang University;Hangzhou;310058;2Construction Quality and Safety Testing Centre of Guangzhou Suijian;Guangzhou;510150 |
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| Abstract: | The governing equations were derived for the consolidation of a stone column reinforced foundation by considering both horizontal and vertical flows within the column with two variation patterns of soil permeability within the disturbed soil zone.Utilizing a new initial condition,the solutions for the average excess pore water pressures at any depth within soil and column were obtained.Then,taking into account the consolidation compression of column,the overall average degrees of consolidation(OADC) of comp... |
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| Keywords: | consolidation composite foundation radial flow horizontal permeability |
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