摘要
根据23个软土地区逆作法工程实测数据,分析了逆作法工程围护结构水平变形曲线,围护结构最大水平位移及位置与开挖深度的关系,墙后地表沉降曲线形态,墙后土体最大沉降与围护结构最大侧移的比值随工况的变化趋势,将这几方面与顺作法工程变形规律作比较,并对各变形规律进行了原因分析,最后对现有逆作法工程设计方法提出意见。
According to the 23 test data of the athwart construction of super foundation excavation in soft clay, this paper analyzes the horizontal deformation curve of retaining structure, the relationship between the maximum horizontal displacement of retaining structure and the depth of excavation, the relationship between the maximum horizontal displacement position of retaining structure and the depth of excavation, ground surface subsidence curve, the trend of the ratio of ground surface maximum settlement and the maximum horizontal displacement of retaining structure with the development of the condition, and compares this aspects with deformation of cover-excavation. This paper also explains the reasons for these phenomena and puts forward opinions on existing design method of the athwart construction.
作者
曾晓晓
郑七振
龙莉波
马跃强
ZENG Xiaoxiao;ZHENG Qizhen;LONG Libo;MA Yueqiang(School of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Construction No.2（Group）Co.,Ltd.,Shanghai 200080,China;Shanghai Center of Top-down Method in Construction Engineering,Shanghai 200080,China)
出处
《施工技术》
CAS
2018年第19期66-69,81,共5页
Construction Technology
基金
上海市科学技术委员会科研计划项目(16DZ1200203)
关键词
逆作法
深基坑
围护结构
变形
沉降
top-down method
deep foundation excavation
retaining structure
deformation
settlement
