多种组合式支护结构在局部狭小空间深大基坑工程中的应用

Application of Multiple Composite Supporting Structures in Deep and Large Foundation Pit Engineering with Local Narrow Space

以上海地区某一动迁安置房项目基坑工程为背景,对基坑周边可利用的支护空间有限,且常规的单一支护结构无法满足要求的方案设计难题进行了研究。通过在基坑周边局部狭小空间条件下,采用多种组合式的支护结构,在确保基坑开挖安全的前提下,保证了支护结构的经济性,可为今后类似基坑工程提供一些借鉴和参考。

Taking the foundation pit engineering of a relocation housing project in Shanghai as the background,this paper studies the foundation pit support scheme which cannot meet the requirement of conventional single supporting structure because of the limited available supporting space around the foundation pit.Under the condition of local narrow space around the foundation pit,a variety of composite supporting structures are adopted.On the premise of ensuring the safe construction of the foundation pit,the economy of the supporting structure is guaranteed,which provides some reference for similar foundation pit projects in the future.