摘要
为分析深厚粉砂土中深基坑开挖与地下结构施工期间基坑变形问题。以南京六合区某深基坑工程为对象,分析了深基坑支护设计方案的选型要点,总结了钻孔灌注桩挡土,三轴水泥土搅拌桩止水,钢筋混凝土内支撑平衡土压力支护设计的关键内容。最后对比分析了设计计算结果与实际监测数据,结果证明了所采取的支护形式的有效性,以期为类似工程参考。
In order to analyze the deformation of deep foundation pit in deep silty sand and underground structure construction.Taking a deep foundation pit project in Liuhe District of Nanjing as an example,this paper analyzes the key points of the selection of deep foundation pit support design scheme,and summarizes the key contents of the design of bored pile retaining soil,triaxial cement soil mixing pile water stop,reinforced concrete internal support and balanced earth pressure support.Finally,the design calculation results and the actual monitoring data are compared and analyzed.The results prove the effectiveness of the support form adopted,so as to provide reference for similar projects.
作者
陈建明
CHEN Jian-ming(Nanjing Water Group Co.,Ltd,Nanjing Jiangsu 210002 China)
出处
《江苏建筑》
2020年第6期93-97,共5页
Jiangsu Construction
关键词
深基坑
灌注桩
三轴搅拌桩
内支撑
deep foundation pit
cast-in-place pile
triaxial mixing pile
internal support
