摘要
为有效管控深基坑施工引起邻近既有地铁隧道的安全风险,提出一种基于C-OWA-云模型的深基坑施工邻近既有地铁隧道安全风险评价方法。结合深基坑自身特点和邻近既有地铁隧道情况选取管理风险、技术风险、环境风险和既有地铁隧道结构状况4个一级评价指标,构建基于C-OWA-云模型的深基坑施工邻近既有地铁隧道安全风险评价模型,并以某工程为例进行验证。研究结果表明:该深基坑施工邻近既有地铁隧道项目安全风险等级为低度风险,基本符合工程施工中的监测结果。其中,深基坑与隧道位置关系、土方开挖方案、支护结构方案、降排水方案等指标风险较大,需要对隧道自身情况及其施工方案等重点监测。
In order to effectively control the safety risk of deep foundation pit construction caused by adjacent existing subway tunnels,a safety risk evaluation method for deep foundation pit construction adjacent to existing subway tunnels based on C-OWA-cloud model was proposed.According to the characteristics of deep foundation pit and the situation of adjacent existing subway tunnels,four first-level evaluation indexes,namely management risk,technical risk,environmental risk and structural status of existing subway tunnels,were selected to construct a safety risk assessment model of adjacent subway tunnels near deep foundation pit construction based on C-OWA-cloud model,and a project was taken as an example for verification.The research results show that the safety risk level of the deep foundation pit construction adjacent to the existing subway tunnel project is low risk,which basically conforms to the monitoring results of the project construction.Among them,the relationship between the deep foundation pit and the location of the tunnel,the earthwork excavation scheme,the support structure scheme,the drainage scheme and other indicators are more risky,so it is necessary to focus on monitoring the tunnel itself and its construction scheme.
作者
曾玉刚
ZENG Yu-gang(Lanzhou Yineng Electric Power Design Consulting Co.,Ltd.,Lanzhou,Gansu,730050,China)
出处
《建材技术与应用》
2024年第6期5-9,共5页
Research and Application of Building Materials
关键词
深基坑施工
邻近既有地铁隧道
C-OWA
云模型
风险评价
deep foundation pit construction
neighboring existing subway tunnel
C-OWA
cloud modeling
risk evaluation
