摘要
结合南京青奥轴线地下工程B2-J1区基坑平面形状复杂、多梯度“坑中坑”的特点,对基坑降水方案进行设计,对降水导致周边环境变形进行了预测并有针对性地采取控制措施;分析基坑不同开挖时序相互影响的耦合效应,重点对围护结构的深层水平位移和变形性状进行模拟分析,制订科学的施工方案,指导本基坑开挖。该工程的成功实施为类似工程提供参考和借鉴。
Combined with the characteristics of complex plane shape and multi-gradient"pit in pit"of foundation pit in B2-J1 area of Nanjing Youth Olympic Axis underground engineering,this paper designs the foundation pit dewatering scheme.The deformations of surrounding environment caused by dewatering are predicted and the corresponding control measures are taken.The coupling effect of different excavation sequence on each other is analyzed.The deep horizontal displacement and deformation characteristics of the retaining structure are simulated,and a scientific construction scheme is developed to guide the excavation of this foundation pit.The successful implementation of this project provides reference for similar projects.
作者
蒋肼
JIANG Jing(China Railway Construction Investment Group Corporation Limited,Beijing 100855,China)
出处
《国防交通工程与技术》
2023年第6期49-52,73,共5页
Traffic Engineering and Technology for National Defence
关键词
深基坑
降水
开挖时序
沉降量
水平位移
变形
deep foundation pit
dewater
settlement
excavation sequence
horizontal displacement
deformation
