摘要
为了解决采用预制矩形桩在软土地区复杂环境中,作为基坑工程支护桩所面临的支护桩变形计算和变形控制标准等难题,基于弹性法基坑支护结构地质剖面单元计算原理,分析了预制矩形桩空腹截面对支护桩变形计算的影响程度。通过盐城某基坑工程实例,简要地阐述了该支护桩的技术特点,并根据理论计算和现场实测数据,对比分析了基坑水平位移和地面沉降变化情况。结果表明:该支护桩在盐城软土地区复杂环境中能实现有效地控制基坑变形,保护周边环境的作用。
In order to solve the problems that facing deformation calculation and deformation control standards in using precast rectangle pile in soft soil area and the complex environment as retaining pile in foundation pit,based on the unit computation principle of the elastic method in geological section of the foundation pit support structure,and the influence degree of the hollow section of the prefabricated rectangular pile to the deformation calculation of the support pile was analyzed.Through a foundation pit engineering examples in Yancheng,the technical characteristics of the retaining piles were briefly expounded,and according to the theoretical calculation and field measured data,the horizontal displacement of foundation pit and land subsidence were analyzed.The results showed that the retaining pile in soft soil area and complex environment in Yancheng that can be implemented effectively control deformation of foundation pit and protect the surrounding environment.
作者
赵升峰
陈祉阳
赵千云
章新
Zhao Shengfeng;Chen Zhiyang;Zhao Qianyun;Zhang Xin(Nanjing Institute of Surveying,Mapping&Geotechnical Investigation Co.,Ltd.,Nanjing 210019,China;College of Transportation Science&Engineering Nanjing Tech University,Nanjing 210009,China)
出处
《建筑结构》
CSCD
北大核心
2019年第A01期775-778,共4页
Building Structure
基金
国家自然科学基金项目(41472283)
南京市测绘勘察研究院有限公司立项课题(2016RD05)
关键词
预制矩形桩
软土基坑
复杂环境
变形计算
弹性法
prefabricated rectangular piles
soft soil foundation pit
complex environment
deformation calculation
elastic method
