【作者】 李今保； 李碧卿； 姜涛； 谢芬； 马江杰；

【Author】 LI Jinbao;LI Biqing;JIANG Tao;XIE Fen;MA Jiangjie;Jiangsu Dongnan Special Engineering & Technology Co.,Ltd.;

【机构】 江苏东南特种技术工程有限公司；

【摘要】 桩基托换是一种对既有建筑基础改造和加固的技术手段,常用于既有建筑物基础与新增地下工程发生冲突的情况。以成都轨道交通8号线一期工程中某段匝道道桥桩基托换工程为例,分析采用传统桩基托换的局限性,并阐述采用被动桩基托换技术的必要性。介绍桩基托换的设计思路,对施工过程技术进行详述,对关键施工步骤展开讨论分析。更多还原

【Abstract】 Pile foundation underpinning is a kind of technical means on transforming and strengthening existing building foundation, which is usually used for conflict between existing building foundation and new underground engineering. Taking the pile foundation replacement project of ramp road bridge of line 8 of Chengdu rail transit as an example, the limitation of adopting traditional pile foundation replacement is analyzed, and the necessity of adopting passive pile foundation replacement technology is expounded. The design idea of pile foundation replacement is introduced, the construction process technology is detailed, and the key construction steps are discussed and analyzed.更多还原