Risk Assessment and Analysis of Support Construction for High-rise Building Foundation Pits
To ensure the safety of foundation pit support construction,this article uses P×Hazard assessment and analysis during the construction process of foundation pit support using method C.The analysis results show that the risk score range of the secondary indicators is55.24~71.44,and the risk level is mainly between level I-III;The risk score range of the first level indicator is 57.12~67.25,with the risk level mainly ranging from level I to level II;Finally,the overall hazard score of foundation pit support construction is 65.98,with a hazard level of II,indi-cating that the construction conditions of the foundation pit are average and the construction risk is relatively low,laying a theoretical foundation for on-site safety construction.
Building foundation pitSupport constructionHazard assessmentAnalytic hierarchy process