| 沉桩引起的三维超静孔隙水压力计算及其应用 |
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| 引用本文： | 王伟,宰金珉,王旭东. 沉桩引起的三维超静孔隙水压力计算及其应用[J]. 岩土力学, 2004, 25(5): 774-777 |
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| 作者姓名： | 王伟 宰金珉 王旭东 |
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| 作者单位： | 1. 南京工业大学 岩土工程研究所，江苏 南京 210009； 2. 河海大学 岩土工程研究所，江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金(NO.50278042)，江苏省应用基础基金(NO.BJ97051)。 |
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| 摘 要： | 引入时间、深度参数分析在饱和软粘土中沉桩时引起的超静孔隙水压力，给出了考虑固结效应的超静孔隙水压力的三维解析解；分析了超静孔隙水压力的消散过程中桩周土发生曼德尔效应的时间和区域，提出了在群桩施工过程中土体中的超静孔隙水压力是消散与累加的综合过程，施工完毕后则变为单一的消散的计算模型，并给出计算公式。通过算例，分析了桩群不同桩距、不同入桩顺序对超静孔隙水压力的影响。
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| 关 键 词： | 沉桩 超静孔隙水压力 时间效应 三维解析解 群桩入桩顺序 |
| 文章编号： | 1000-7598-(2004)05-774-04 |
| 收稿时间： | 2003-03-28 |
3D calculation of excess pore water pressure due to driving pile and its application |
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| WANG Wei,,ZAI Jin-min,WANG Xu-dong. 3D calculation of excess pore water pressure due to driving pile and its application[J]. Rock and Soil Mechanics, 2004, 25(5): 774-777 |
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| Authors: | WANG Wei ZAI Jin-min WANG Xu-dong |
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| Affiliation: | 1. Research Institute of Geotechnical Engineering, Nanjing University of technology, Nanjing 210009, China; 2. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | Time and depth were adopted to analyze excess pore water pressure (EPWP) due to driven pile in soft clay; and a 3D analytical formula was derived. Principle of EPWP dissipation process was discussed. Position and time that Mandol effect of the soil around the pile happened were analyzed. A model to calculate EPWP due to pile groups was established: during piles driving, EPWP in soil accumulates and dissipates; after that, EPWP dissipates only. And effects of pile spacing and driving order of pile group on EPWP were analyzed. |
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| Keywords: | pile driving excess pore water pressure time effect 3-D analytical formula driving order of pile group |
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