紧邻地铁基坑支护设计的优化方法  

Discussion on the Optimization Method of Deep Foundation Pit Supporting Design near Subways

作　　者：任贵生[1] REN Guisheng(Beijing Geo-engineering Company, Beijing 100143)

机构地区：[1]北京市地质工程公司,北京100143

出　　处：《城市地质》2017年第2期113-117,共5页Urban Geology

摘　　要：与既有地铁结构临近深大基坑的支护设计因受到各种因素的影响,极易出现支护设计过于冒进或过于保守两种情况。本文探讨的与地铁临近深大基坑支护设计的优化方法,在阐述基坑支护设计优化方案的同时,根据拟建基坑与紧邻地铁结构在空间上的位置关系,将此类型基坑又细分为拟建基坑位于地铁隧道上方、拟开挖基坑位于地铁结构一侧开挖深度小于地铁结构基础埋深及基坑开挖深度大于地铁埋深三种类型。明确了设计优化阶段的划分及流程,并通过案例介绍,指出通过对多个单项工程优化经验的积累,可进一步提高该类型基坑支护设计的整体水平。Supporting design of foundation pit should consider various factors, if not, there are two kinds of situation-too risky situation or too safe situation to appear easily. In this paper, the design optimization of foundation pit supporting is discussed. The foundation pit is divided into three types according to the spatial position between the foundation pit and the subway. The stage division and process of design optimization are defned as an example. It is pointed out that the overall level of supporting design of foundation pit can be further improved by the accumulation of the optimization experience of a number of individual projects.

关 键 词：基坑支护设计 地铁 设计优化 基坑监测 

分 类 号：TU753[建筑科学—建筑技术科学]