复杂边界条件下软土地区深大基坑组合式支护设计与应用  

Design and Application of Combined Support for Deep and Large Foundation Pit in Soft Soil Area Under Complex Boundary Conditions

作　　者：谢弘帅 孙朋杰 何林南 郑鹏亮 张林华 杜维彬 XIE Hongshuai;SUN Pengjie;HE Linnan;ZHENG Pengliang;ZHANG Linhua;DU Weibin(Shanghai Marine Geological Exploration and Design Co.,Ltd.,Shanghai 200120,China;China Construction Second Bureau First Construction Engineering Co.,Ltd.,Beijing 100176,China)

机构地区：[1]上海海洋地质勘察设计有限公司,上海200120 [2]中建二局第一建筑工程有限公司,北京100176

出　　处：《建筑施工》2021年第10期2026-2029,2033,共5页Building Construction

摘　　要：依托复杂边界条件下的软土深基坑,对不同支护条件下的基坑进行设计方案选型,分别采用了前撑式注浆钢管斜撑体系支护、双排桩支护及桩锚支护等多种支护结构组合支护方式,并通过实施效果对设计方案进行验证。现场支护效果表明,基坑侧壁水平位移和周边建筑物沉降均在安全控制范围内,支护效果良好。组合支护体系对解决复杂地质条件和复杂边界条件的基坑支护问题更有针对性,为类似项目提供了借鉴。Based on the soft soil deep foundation pit under complex boundary conditions,the design scheme selection of foundation pit under different support conditions is carried out.A variety of combined support methods such as front support grouting steel pipe diagonal support system support,double row pile support and pile anchor support are adopted respectively for support structures,and the design schemes are verified through the implementation effect.The field support effect shows that the horizontal displacement of the side wall of the foundation pit and the settlement of surrounding buildings are within the safe control range,and the support effect is good.The combined support system is more targeted to solve the foundation pit support problems with complex geological conditions and complex boundary conditions,and provides a reference for similar projects.

关 键 词：复杂边界条件 软土深基坑 设计选型 组合支护 

分 类 号：TU753[建筑科学—建筑技术科学]