山东建筑大学学报2013，Vol.28Issue(2)：139-143,5.
基坑开挖对单桩竖向极限承载力的影响研究
Study on the influence of pit excavation on ultimate vertical bearing capacity of a single pile
石英光 1孙剑平 1舒计城 1刘国辉2
作者信息
- 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
- 折叠
摘要
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.关键词
单桩竖向极限承载力/基坑开挖/数值模拟Key words
ultimate vertical bearing capacity of a single pile/ pit excavation/ numerical simulation分类
建筑与水利引用本文复制引用
石英光,孙剑平,舒计城,刘国辉..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,2013,28(2):139-143,5.
