摘要
城市地下空间工程施工时,往往由于用地、工期矛盾,会出现两个甚至多个基坑同时施工的情况,导致基坑工程相邻,基坑支护结构的设计将面临同坑开挖和分坑开挖方案的选择,不同开挖方案对基坑工程的安全性、经济性及周边环境等都有重要影响。以江西省九江市某调蓄池及就地处理站基坑为工程背景,综合考虑基坑围护结构的受力特性、安全性与经济性,研究两个相邻地下工程基坑支护结构的设计方案,并对相邻深基坑同坑、分坑施工的设计方案进行比选,对基坑围护结构设计进行优化,寻找最优设计方案,并为相关工程提供参考。
During the construction of urban underground space engineering,due to the contradiction between land use and construction duration,two or even more deep excavations will be constructed concurrently,resulting in the different impact on the adjacent environment.The design of deep excavation support structure will face the selection of the same pit excavation and sub pit excavation plans.Different excavation plans have an important impact on the safety,economy and surrounding environment of excavation engineering.This paper presents a case history of the deep excavation of a regulation and storage tank and local treatment station in Jiujiang City,Jiangxi Province.The stress characteristics,safety and economy of the excavation supporting structure are evaluated.The different design plans for the excavation supporting structures for the two adjacent projects are compared and the design of the construction of the same excavation and separate excavation of the other pit are selected.
作者
李锦
LI Jin(Shanghai Urban Construction Design&Research institute(Group)Co.Ltd.,Shanghai 200125)
出处
《土工基础》
2023年第4期562-565,共4页
Soil Engineering and Foundation
关键词
相邻深基坑
支护体系
方案优化
分坑施工
同坑施工
Adjacent Deep Excavations
Support System
Design Optimization
Construction of Separate Excavations
Construction Within One Excavations
