双排桩在深基坑支护中的应用  

Application of Double-row Piles in Deep Foundation Pit Support

作　　者：牟春梅[1] 董文专 邱贤辉 邱建国[1] 

机构地区：[1]桂林理工大学,广西桂林541004 [2]湖南省农林工业勘察设计研究总院,长沙410007

出　　处：《路基工程》2014年第5期49-52,76,共5页Subgrade Engineering

基　　金：国家自然科学基金(51169004);广西科技厅北部湾重点项目(2012GXNSFEA053002);广西岩土力学与工程重点实验室项目(11-CX-02-2);广西自然科学基金创新研究团队项目(2012GXNSFGA060001);广西科技攻关与新产品试制项目(桂科攻0992027-8)

摘　　要：随着城市化的发展,城市建设中的基坑设计越来越复杂、限制条件也越来越多。双排桩支护作为一种新型的基坑支护方式,其独特的内力分布方式及自稳方式,在非闭合基坑不能实施内支撑且对变形要求严格的深基坑设计中,能发挥重要作用。在阐述双排桩支护设计理论的基础上,通过工程实例进行计算分析,双排桩支护能满足深基坑工程应达到地下室及主体结构不承担基坑侧壁回填土传递的土压力的要求,并且有良好效果。With the development of urbanization,foundation pit design in urban construction is more and more complex with more and more restrictions.Double-row pile,as a new supporting structure,has unique internal force distribution and self-stabilizing manner,and inner support can not be implemented in unclosed foundation pit.For the deep foundation pit design with strict requirement on deformation,double-row piles may play an important role.Based on elaboration of the design theory herein,the double-row piles were verified by calculation and analysis on project cases to meet the requirement of the basement and main structure not bearing any soil pressure transferred by backfill at the sidewall of foundation pit in deep excavation engineering.The practice has proved that good effect is obtained.

关 键 词：深基坑支护 变形 双排桩 设计 

分 类 号：U417.1[交通运输工程—道路与铁道工程]