| 初始孔压非均布条件下散体材料桩复合地基固结理论研究 |
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| 引用本文： | 张玉国,岳峰,谢康和.初始孔压非均布条件下散体材料桩复合地基固结理论研究[J].岩土力学,2011,32(9):2675-2680. |
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| 作者姓名： | 张玉国 岳峰 谢康和 |
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| 作者单位： | 1. 中原工学院 建筑工程学院，郑州 450007；2. 中原工学院 现代教育技术中心，郑州 450007；3. 浙江大学 岩土工程研究所，杭州 310027 |
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| 基金项目： | 河南省教育厅自然科学研究项目(No.2007560021,No.2008A560016); 河南省重点科技攻关计划(No.072102230029) |
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| 摘 要： | 针对现有复合地基固结理论仍不能考虑实际工程中存在的初始孔压非均布情况的不足，采用解析方法对散体材料桩复合地基进行深入研究，给出了考虑初始孔压非均布的散体材料桩复合地基固结一般解。探讨了初始孔压非均布的3种特殊情况，导出了初始孔压矩形分布（均布）、正三角形分布和倒三角形分布等情况下的复合地基平均孔压和平均固结度表达式。研究表明：单面排水条件下，初始孔压分布对复合地基固结有显著影响；初始孔压均布和正三角形分布条件下，超静孔压随Tv值的增大而逐渐消散，固结期间地基底部孔压值最大；初始孔压倒三角形和梯形（pB /pT =0.5）分布条件下，Tv值越大，孔压等时线越平缓，且孔压最大值的位置由地基顶部向底部转移，固结过程中底部孔压变化呈现“从小变大、再变小”的特点
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| 关 键 词： | 散体材料桩复合地基 固结 初始孔压非均布 孔压等时线 解析解 |
| 收稿时间： | 2010-01-11 |
Study of consolidation theory of composite ground with granular columns under nonuniform distribution of initial excess pore water pressure |
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| ZHANG Yu-guo,YUE Feng,XIE Kang-he.Study of consolidation theory of composite ground with granular columns under nonuniform distribution of initial excess pore water pressure[J].Rock and Soil Mechanics,2011,32(9):2675-2680. |
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| Authors: | ZHANG Yu-guo YUE Feng XIE Kang-he |
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| Institution: | 1. College of Civil Engineering and Architecture, Zhongyuan University of Technology, Zhengzhou 450007, China; 2. Center of Modern Education, Zhongyuan University of Technology，Zhengzhou 450007, China; 3. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Aiming at the shortcoming of the existing consolidation theories of composite ground without considering nonuniform distribution of initial excess pore water pressure in practical engineering,the consolidation theory of composite ground with granular columns is studied in-depth by analytical method;and a general analytical solution is given to the consolidation problem for the composite ground with granular columns under nonuniform distribution of initial excess pore water pressure.The three special cases f... |
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| Keywords: | composite ground with granular columns consolidation nonuniform distribution of initial excess pore water pressure excess pore water pressure isochrones analytical solution |
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