上海交通大学学报

上海交通大学学报 >

2006 , Vol. 40 >Issue 12: 2130 - 2134

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2006.12.025

大面积堆载作用下饱和土中的桩基工作性状

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  • 上海交通大学土木工程系，上海 　200030
王恺敏（1981-)，男，上海人，硕士，主要从事岩土工程设计咨询．|王建华（联系人），男，教授，博士生导师，电话（Tel.): 021-62932915; E-mail: wjh417@sjtu.edu.cn.

收稿日期: 2005-11-08

  网络出版日期: 2021-04-25

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The Behavior of Piles in Saturated Soil under Surcharge Loads

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  • Dept. of Civil Eng. , Shanghai Jiaotong Univ. , Shanghai 200030, China

Received date: 2005-11-08

  Online published: 2021-04-25

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摘要

软粘土地基在大面积堆载作用下会产生大量沉降，并影响区域内桩基和邻近桩基的正常工作．采用有限元方法分别研究大面积堆载作用下负摩擦桩的受力与变形性状，并通过算例分析讨论了不同接触面对桩土沉降差、侧移以及桩身轴力的影响．现场试验的数值分析结果验证了本方法的有效性，并得到大面积堆载作用下土体沉降、桩身轴力和弯矩的变化规律，为计算与设计提供了依据．

关键词： 大面积堆载; 负摩擦; 接触面; 孔压; 有限元

本文引用格式

王恺敏, 王建华, 陈锦剑, 侯永茂 . 大面积堆载作用下饱和土中的桩基工作性状[J]. 上海交通大学学报, 2006 , 40(12) : 2130 -2134 . DOI: 10.16183/j.cnki.jsjtu.2006.12.025

Abstract

Large settlement occurs in soft clay foundation due to surcharge loads, which will affect the behavior of the pile foundation in site and nearby. Negative piles were studied by FEM considering the pile-soil slippage and consolidation of soil. Then settlement, side displacement, and axial force of piles were discussed and analyzed by using different contact surface of two examples. The comparison between the numerical analysis and in-situ tests shows the efficiency of the method and demonstrates some rules of soil settlement, pile axial force and moment, which can be used in engineering design.

Key words： surcharge loads; negative skin friction; contact face; pore pressure; finite element

参考文献

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