[1]石英光,孙剑平*,舒计城,等.基坑开挖对单桩竖向极限承载力的影响研究[J].山东建筑大学学报,2013,(02):139-143.
 Shi Yingguang,Sun Jianping*,Shu Jicheng,et al.Study on the influence of pit excavation on ultimate vertical bearing capacity of a single pile[J].Journal of Shandong jianzhu university,2013,(02):139-143.
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基坑开挖对单桩竖向极限承载力的影响研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2013年02期
页码:
139-143
栏目:
研究论文
出版日期:
2013-04-15

文章信息/Info

Title:
Study on the influence of pit excavation on ultimate vertical bearing capacity of a single pile
文章编号:
1673-7644(2013)02-0139-05
作者:
石英光1孙剑平*1舒计城1刘国辉2
1.山东建筑大学 土木工程学院,山东 济南 250101;2.山东省建筑设计研究院,山东 济南 250001
Author(s):
Shi Yingguang Sun Jianping* Shu Jicheng et al.
School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China
关键词:
单桩竖向极限承载力基坑开挖数值模拟
Keywords:
ultimate vertical bearing capacity of a single pile pit excavation numerical simulation
分类号:
TU473.1+1
文献标志码:
A
摘要:
摘要 :文章基于德州某基坑工程中桩基承载力的问题,针对基坑开挖对坑底工程桩承载力的折减效应进行了分析。通过有限差分软件FLAC3D进行基坑开挖后桩基受力的建模分析,得到了桩应力场和位移场的变化情况。结果表明:桩体承载力减小的主要原因是基坑开挖之后坑底回弹和桩土法向应力的减小;桩体越长,土体粘聚力值越大,基桩承载力受到基坑开挖折减的影响就越小;采用覆土条件下的基桩承载力是偏不安全的。
Abstract:
Abstract: Based on the pile foundation bearing capacity problems in a pit engineering in DeZhou, the paper analyzes the reduction effect of pit excavation on the pit pile bearing capacity of the foundation engineering. The article makes a modeling analysis of the force of pile foundation by the finite difference software FLAC3D after pit excavation, and gets the changes of the pile stress field and displacement field. The results show: the main reasons for the decrease of pile bearing capacity are the rebound of pit bottom and the decreases of the normal stress between pile and earth after the excavation of foundation pit; the longer the pile body, the greater the soil cohesion value, and the smaller the impact of pit excavation reduction on the pit pile bearing capacity of the foundation engineering; the pile capacity under the overburden conditions is partial unsafe.

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[1]王知深,李勇,*,等.锚索长度对城市土体基坑边坡支护效果影响[J].山东建筑大学学报,2019,34(01):84.[doi:10.12077/sdjz.2019.01.013]
 WANG Zhishen,LI Yong,*,et al.Influence of anchor cable length on the slope support effect of urban soil foundation pit[J].Journal of Shandong jianzhu university,2019,34(02):84.[doi:10.12077/sdjz.2019.01.013]

备注/Memo

备注/Memo:
收稿日期:2013-3-25
作者简介:石英光(1986-),男,在读硕士,主要从事基础工程研究.E-mail:shiyingguang886@163.com
*通讯作者:孙剑平(1963-),男,教授,硕士,主要从事地基加固和基坑变形控制研究. E-mail:jpsun1@263.net
更新日期/Last Update: 2013-06-11