软土地层复杂地下结构的基坑设计与换撑  

Foundation pit design and support replacement for complex underground structures in soft soil

作　　者：惠刚 别小勇 Hui Gang;Bie Xiaoyong(Wuxi Architectural Design and Research Institute Co.,Ltd.,Wuxi Jiangsu 214000,China)

机构地区：[1]无锡市建筑设计研究院有限责任公司,江苏无锡214000

出　　处：《山西建筑》2024年第11期81-85,共5页Shanxi Architecture

摘　　要：软土区基坑开挖施工产生的变形大,影响范围广,变形主要在开挖卸土过程中产生,而拆换撑过程所产生的变形也是整个基坑工程变形的重要组成部分。通过采用合理的支护形式能够对开挖过程中产生的变形进行控制,满足结构的安全和对周边环境的保护,同时兼顾经济性。拆撑前需采用合理的换撑措施使支撑力平稳过渡,以减小换撑中产生的变形。以软土区基坑工程为例,结合地下室结构特点,有针对性地采用了多种不同的支护和换撑形式,有效控制了开挖及换撑中产生的变形,保证了基坑设计施工的安全顺利实施。The deformation caused by foundation pit excavation in soft soil areas is large and has a wide range of influence.The deformation is mainly generated during the excavation and soil unloading process,and the deformation caused by the removal of supports is also an important part of the deformation of the foundation pit project.By adopting reasonable support forms,the deformation generated during the excavation process can be controlled,which not only meets the safety of the structure but also protects the surrounding environment,while taking into account economy.Before removing the supports,it is necessary to adopt reasonable support replacement to ensure a smooth transition of support force,thereby reducing the deformation caused by the support replacement.This article takes the foundation pit project in the soft soil area as an example,based on the structural characteristics of the basement,many different support and support replacement forms are used,which effectively controls the deformation generated during construction,and provides a reference for similar projects.

关 键 词：基坑支护 支撑 换撑 拆撑 

分 类 号：TU942[建筑科学—建筑技术科学]