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富水软土深基坑多元信息模糊可拓风险评估模型及应用

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富水软土地层地铁车站深基坑施工难度大，施工环境复杂，安全风险高。依托广州某地铁车站深基坑工程，采用 WBS-RBS(Work Breakdown Structure-Risk Breakdown Structure)法建立富水软土深基坑施工安全风险辨识的多元指标评价体系。通过资料收集和现场施工调研，将车站主体结构中的施工质量风险、监控风险、人员与设备风险、周边环境风险、自然环境风险作为一级风险指标。采用改进模糊层次分析法计算指标权重，物元可拓模型确定关联度及等级，并将各指标权重与关联度结合构建风险量化模型。研究显示，基坑施工质量风险大于周边环境风险，其中地下连续墙接缝渗漏水和坑内涌水对基坑的影响较大。根据评估结果采取措施，计算结果与实际工程相符，表明多元信息模糊可拓法可以推广应用于类似工程。
Fuzzy extension risk assessment model of deep foundation pit in water-rich soft soil and its application with multi-information
It is difficult to construct a deep foundation pit of a subway station under the condition of a water-rich soft soil layer,the construction environment is complex,and the safety risk is very high.Therefore,a reasonable and effective safety quantitative risk assessment is carried out for deep foundation pit construction of metro stations under a water-rich soft soil layer.In this paper,based on the station of Guangzhou subway deep foundation pit engineering,WBS-RBS method is adopted to establish the rich water soft soil deep foundation pit construction safety risk identification index evaluation system,through the data collection and field construction of the station main body structure construction quality in the construction of risk,risk monitoring,personnel and equipment risk,surrounding environment risk,natural environmental risks as the primary risk indexes.Based on the improved fuzzy Analytic Hierarchy Process(AHP),the index weight is calculated,and the extension theory model is established to analyze the loss degree and occurrence probability and calculate the risk grade correlation degree.The risk quantitative model is constructed by combining the index weight and correlation degree.Through qualitative and quantitative analysis,the correlation degree of each risk index is calculated.Finally,the risk level of the subway station's deep foundation pit is obtained.The research results show that the quality risk of foundation pit construction is greater than the surrounding environmental risk,and the water and sand inrush in the foundation pit has a great influence on the foundation pit.According to the correlation degree of each index obtained from the evaluation results,measures can be taken to control the risk,especially for water and sand inrush in the foundation pit.The calculation results are consistent with the actual engineering situation,which proves the feasibility of this method from the side and can be applied to similar projects.

safety engineeringsubway station constructionwater-rich soft soilimproved fuzzy analytic hierarchy processextension theoryrisk assessment

吴波、夏倩、刘聪、谢运东、黄惟

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东华理工大学土木与建筑工程学院,南昌 330013

广州城建职业学院建筑工程学院,广州 510925

宁波工程学院建筑与交通工程学院,浙江宁波 315211

中铁北京工程局集团城市轨道交通工程有限公司,合肥 230088

中国计量大学质量与安全工程学院,杭州 310018

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安全工程 地铁车站施工 富水软土层 改进模糊层次分析法 可拓理论 风险评估

国家自然科学基金项目江西省自然科学基金项目江西省双千计划创新领军人才项目

5216805520212ACB204001jxsq2020101001

2024

10.13637/j.issn.1009-6094.2022.2301

安全与环境学报
北京理工大学 中国环境科学学会 中国职业安全健康协会

安全与环境学报

CSTPCD北大核心
影响因子：0.943
ISSN：1009-6094
年,卷(期)：2024.24(1)
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