The specific relationship between risk nodes in subway deep excavation construction is not clear,making it difficult to accurately quantify and analyze risk factors.Therefore,a risk identification method for subway deep excavation construction based on mapping relationship and influence centrality is proposed.Firstly,analyze the construction mechanism of deep foundation pits,combine the fusion results of construction sensing information,and decompose the risk factors through spatiotemporal coupling;secondly,using the coupling decomposition results as risk nodes,a security risk network structure diagram is constructed to represent the importance of different risk nodes in the security risk network structure diagram;thirdly,by combining the impact centrality of risk nodes,the risk level mapping relationship is obtained to identify key subway deep foundation pit construction risks.The test results indicate that after the application of this method,the density of the project risk network gradually decreases,thereby reducing the probability of safety accidents,so it can accurately identify key subway deep foundation pit construction risks.
关键词
传感信息融合/时空耦合/深基坑/施工安全/风险识别
Key words
sensor information fusion/spatio-temporal coupling/deep foundation pits/construction safety/risk identification
维普
万方数据