土岩二元复合地层地铁深基坑设计与施工  

Design and Construction of Deep Foundation Pits for Subway in Soil-Rock Composite Strata

作　　者：王雪云 Wang Xueyun(No.5 Engineering Co.,Ltd.,China Railway 18th Bureau Group,Tianjin 300459)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300459

出　　处：《黄河科技学院学报》2025年第2期61-68,共8页Journal of Huanghe S&T College

摘　　要：地质条件是深基坑工程设计施工需要考虑的一个重点因素,以某地铁车站土岩复合地层深基坑为研究对象,对比分析了围护桩+内支撑、吊脚桩+锚索的支护方式在工期及造价上的优劣势,重点介绍吊脚桩支护方式的计算方法、施工控制以及监测要点。研究表明:在土岩复合地层基坑中,采用吊脚桩+锚索的基坑支护方式可以有效降低造价并节省工期。吊脚桩计算可采用弹性地基梁模型,按照施工顺序和荷载工况进行相关验算。Geological condition is an important factor to be considered in the design and construction of deep foundation pit engineering.Arming at the discussion and research on the deep foundation pit of a subway station in soil-rock composite stratum,this paper analyzes the advantages and disadvantages of retaining piles with internal supports and end-suspended pile with anchor cables in terms of construction period and cost.At the same time,the calculation method,construction control and monitoring points of end-suspended pile support mode are emphatically introduced in this paper.The research shows that the supporting method of end-suspended pile with anchor cables can effectively reduce costs and save construction time in the soil-rock composite strata foundation pit.The calculation model of elastic foundation beam can be used in the design of end-suspended pile based on the construction sequence and load conditions.

关 键 词：土岩复合地层 地铁 深基坑 吊脚桩 监测 

分 类 号：TU758.11[建筑科学—建筑技术科学]