基于监测数据的基坑工程安全评判  

Safety evaluation of foundation pit engineering based on monitoring data

作　　者：赵剑 李双艳[2] 徐剑敏 刘定邦 赵磊 ZHAO Jian;LI Shuang-yan;XU Jian-min;LIU Ding-bang;ZHAO Lei(Shenzhen Geology&Construction Company,Shenzhen 518000,Guangdong,China;Central South University of Forestry&Technology,Changsha 410000,Hunan,China;Shenzhen Metro Group Co.,Ltd.,Shenzhen 518000,Guangdong,China)

机构地区：[1]深圳地质建设工程公司,广东深圳518000 [2]中南林业科技大学,湖南长沙410000 [3]深圳市地铁集团有限公司,广东深圳518000

出　　处：《地基处理》2024年第1期90-97,共8页Journal of Ground Improvement

摘　　要：基坑工程安全主要体现在基坑支护体系本身的安全以及基坑周边环境的安全,而监测数据可以清晰地反映出基坑支护体系和周边环境的变化,提供有价值的信息,以便更好地了解这些变化。监测数据是评估基坑安全性和采取必要措施的重要参考,对基坑进行全面而有效的监测显得尤为重要。在基坑安全判定过程中,利用基坑各监测项目的实时监测数据进行计算,可以有效避免对基坑安全评估的主观性。鉴于基坑工程的安全性分析是不确定性问题,不仅具有随机性,也具有模糊性,本文通过将层次分析法和模糊综合评估方法有机结合,构建了一个基于实时监测数据的基坑安全评估模型。以深圳某基坑工程施工过程中的一起监测预警事件为例,利用现场监测数据,运用AHP-模糊综合评判法对该基坑工程进行了安全评判,评判结果能够较真实地反映基坑的实际安全状态。Safety is of paramount concern in the realm of foundation pit engineering.It depends not only on the structural integrity of the support system but also on the stability of the surrounding environment.Changes in the foundation pit support structure and developments in the surrounding environment are discernible through monitoring data.Due to the intricate nature of foundation pit engineering,there is a degree of uncertainty when assessing its safety solely relying on monitoring data.Consequently,this work introduces a novel approach that comprehensively employs the analytic hierarchy process and fuzzy comprehensive evaluation to enhance the accuracy of foundation pit safety assessment.To illustrate this method,the work presents a case involving monitoring and early warning during the construction of a foundation pit project in Shenzhen.By utilizing on-site monitoring data and the AHP fuzzy comprehensive evaluation method,the work conducts a safety assessment of the foundation pit project.The evaluation results can truly reflect the actual safety status of the foundation pit.

关 键 词：基坑工程 风险 层次分析法 模糊综合评判法 监测数据 安全评判 

分 类 号：TU473[建筑科学—结构工程]