基于WBS-RBS-G1法的深基坑开挖风险识别与评价  

Risk Identification and Assessment of Deep Excavations Based on WBS-RBS-G1 Methods

作　　者：刘碧萍 刘祖容[1,2] 龙湖荣 LIU Biping;LIU Zurong;LONG Hurong(College of Civil Engineering and Architecture of Guangxi University,Nanning 530004;Guangxi Key Laboratory of Disaster Prevention and Mitigation and Engineering Safety,Nanning 530004)

机构地区：[1]广西大学土木建筑工程学院,南宁530004 [2]广西防灾减灾与工程安全重点实验室,南宁530004

出　　处：《公路交通技术》2021年第4期119-125,共7页Technology of Highway and Transport

摘　　要：对深基坑开挖进行风险识别与评价时,提出了将WBS-RBS法与G1法相结合的定性与定量评价模型,并以南宁金凯路地铁车站为例,应用该模型计算得出的风险值从而确定施工单元风险等级。计算结果表明,深基坑开挖过程中,地下连续墙施工A 2,基坑开挖A 3,主体结构施工A 5均为Ⅲ级风险。该模型无需构造判断矩阵,避免了一致性检验不一致的发生,提高了结果准确度,可供类似工程项目风险评价参考。During risk identification and evaluation of deep excavation,a qualitative and quantitative evaluation model that is a combination of WBS-RBS and G1.WBS is proposed.Taking the Jin Kai Road subway station for example,risk level is determined by the model to calculate the risk degree of work units.The results show that,construction of underground diaphragm wall,excavation of foundation pit and construction of main structure are levelⅢrisks in the process of deep excavation.This model which doesn′t construct the judgment matrix avoids the occurrence of inconsistent consistency test and improves the result accuracy.It can provide reference for the risk assessment of similar engineering projects.

关 键 词：深基坑开挖 作业分解结构 风险分解结构(WBS-RBS) G1法 风险识别与评价 

分 类 号：U455[建筑科学—桥梁与隧道工程]