地铁工程深基坑风险精准识别与定量评价  

Research on accurate identification and quantitative evaluation of deep foundation pit risk in metro engineering

作　　者：金阳 何柏军 吴靖江 赵汉哲 郑传峰[2] 张永 JIN Yang;HE Baijun;WU Jingjiang;ZHAO Hanzhe;ZHENG Chuanfeng;ZHANG Yong(Communications Construction Company of CSCEC 7th Division,Henan Zhengzhou 450004 China;College of Transportation,Jilin University,Jilin Changchun 130012 China)

机构地区：[1]中建七局交通建设有限公司,河南郑州450004 [2]吉林大学交通学院,吉林长春130012

出　　处：《山东交通科技》2024年第6期65-69,75,共6页

基　　金：国家重点研发计划,项目编号:2021YFB-2600604;中建七局交通建设有限公司科研课题,项目编号:JTZB-CCDT-D005/2022。

摘　　要：为了提高明挖深基坑施工中风险的准确识别与量化评价能力,研究了深基坑风险识别与评价方法。以长春市城市轨道交通空港线(9号线)一期工程二工区明挖段深基坑项目为案例,采用WBS-RBS法、模糊综合评价法以及定性与定量相结合的分析方法,形成了一套深基坑风险识别与评价技术,通过该技术对该深基坑项目的风险特征进行了精准识别和评价。研究结果表明,该基坑工程施工整体风险属于Ⅱ级风险,其中钻孔灌注桩渗流破坏为Ⅲ级风险,而钻孔灌注桩失稳破坏、土体滑坡、坑底隆起、突涌管涌、内支撑失稳为Ⅱ级风险。所采用的WBS-RBS与模糊综合评价相结合的方法,能够精确识别深基坑风险并对其状态进行定量评价。In order to improve the accurate identification and quantitative evaluation of risks in open cut deep foundation pit construction,the deep foundation pit risk identification and evaluation method was studied.Taking the deep excavation project of the second section of Phase I of the Changchun Urban Rail Transit Airport Line(Line 9)as a case study,a set of deep excavation risk identification and assessment techniques was developed using the WBS-RBS method,fuzzy comprehensive evaluation method,and a combination of qualitative and quantitative analysis methods.Through this technique,the risk characteristics of the deep excavation project were accurately identified and evaluated.The research results indicate that the overall construction risk of this excavation project is classified as LevelⅡ,with the risk of seepage damage in bored pile construction classified as LevelⅢ.Additionally,risks such as instability and failure of bored piles,soil landslide,bottom heave,sudden water influx,and instability of internal support are classified as LevelⅡrisks.The combined approach of WBS-RBS and fuzzy comprehensive evaluation used in this paper enables precise identification of deep excavation risks and quantitative assessment of their status.

关 键 词：岩土工程 风险识别与评价 WBS-RBS法 深基坑施工风险 模糊综合评价法 

分 类 号：U231.3[交通运输工程—道路与铁道工程] TU753[建筑科学—建筑技术科学]