| 桩体复合地基桩、土相互作用的解析法 |
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| 引用本文： | 池跃君,沈伟,宋二祥.桩体复合地基桩、土相互作用的解析法[J].岩土力学,2002,23(5):546-550. |
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| 作者姓名： | 池跃君 沈伟 宋二祥 |
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| 作者单位： | 清华大学 土木工程系，北京 100084 |
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| 基金项目： | 北京市自然科学基金项目 8982011 |
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| 摘 要： | 桩体复合地基的设计中，承载力及沉降的计算一直没有较好地考虑桩、土和垫层的相互作用。根据三者的协同作用，推导出大面积群桩中桩、土的荷载传递基本微分方程并给出其解答。该方法提高了计算速度，土性参数均为常规指标，简便易得。该方法还考虑了桩侧阻随侧向土压力的变化以及垫层、土体压缩模量随压力的变化。与有限元计算结果对比表明了该解答的可行性。能够对桩土分担比以及沉降的计算提供帮助，是一种简便实用的方法。
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| 关 键 词： | 桩体复合地基 解析法 承载力 沉降 |
| 文章编号： | 1000-7598-(2002)05-0546-05 |
| 收稿时间： | 2001-10-12 |
| 修稿时间： | 2001年10月12 |
Analytical method for calculating pile-soil-cushion interaction of composite grounds with piles |
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| CHI Yue-jun,SHEN Wei,SONG Er-xiang.Analytical method for calculating pile-soil-cushion interaction of composite grounds with piles[J].Rock and Soil Mechanics,2002,23(5):546-550. |
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| Authors: | CHI Yue-jun SHEN Wei SONG Er-xiang |
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| Institution: | Department of Civil Engineering, Tsinghua University, Beijing 100084， China |
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| Abstract: | In practice, pile-soil-cushion interaction of composite grounds with piles is not well considered in bearing capacity and settlement estimation. To solve it, based on the relation among pile-soil-cushion, the differential equations of settlements of piles and soil in large-area pile groups together with their solutions are presented. Compared to the results of finite element analysis, these solutions are quite accurate. This method greatly enhances the speed of calculation. The parameters used in this method are all routine soil parameters and are easily obtained through soil test. Also, the stress dependency of both the soil-pile limit friction and the compression modulus is taken into account in the proposed method. This method is practical and applicable to calculate pile-soil stress ratio and settlement of composite grounds with piles. |
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| Keywords: | Composite grounds with piles analytical method bearing capacity settlement |
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