深基坑支护施工技术探讨——以湘雅五医院深基坑支护为例  

Exploration of construction technology for deep foundation pit support——Taking deep foundation pit support as project in Xiangya fifth hospital an example

作　　者：刘福云 周启明 陈辉 LIU Fuyun;ZHOU Qiming;CHEN Hui(Hunan Fifth Engineering Co.,Ltd.,Zhuzhou 412011,Hunan,China;Hunan Construction Real Estate Investment Co.,Ltd..Changsha 410205,Hunan,China)

机构地区：[1]湖南省第五工程有限公司,湖南株洲412011 [2]湖南省建工置业投资有限公司,湖南长沙410205

出　　处：《工程建设》2024年第10期56-61,共6页Engineering Construction

摘　　要：基坑工程对建筑产品生产全过程的安全性和经济性至关重要。文章以湘雅五医院深基坑支护为例,针对不利的地理位置和复杂的施工环境条件,采用不同的支护方式。对于开挖深度不大、施工场地较为宽广的基坑,采用复合土钉墙支护结合两级放坡进行开挖;基坑开挖深度较大、场地受限没有放坡位置的基坑,采用旋挖灌注桩结合预应力锚索支护后再进行开挖。结果表明:复合土钉墙、桩-锚结合支护方式在开挖深度为20~25 m的基坑施工中安全可靠、经济实用。本文结果可为同类工程提供参考。Foundation pit engineering is crucial to the safety and economic efficiency of produotion process of construction products.Taking deep foundation pit support in Xiangya fifth hospital as an example,aiming at unfavorable geographical location and complex construction environment conditions,different support methods are adopted.The foundation pit with small excavation depth and wide construction site is excavated by using composite soil nailing wall support combined with two-stage slope cutting.When the excavation depth of foundation pit is large,the site is limited and there is no slope position,the excavation is carried out after the rotary excavation pile combined with the prestressed anchor cable support.The construction process of this case shows that the composite soil nailing wall,pile-anchor combined support method is safe,reliable,economic and practical in the excavation depth of 20~25 m.This paper can provide reference for similar projects.

关 键 词：复合土钉墙 桩-锚结合 旋挖桩 锚索 变形观测 

分 类 号：TU753[建筑科学—建筑技术科学]