Research On Quality Risk Control Of Construction Engineering Under The Background Of Insurance

The quality supervision of construction projects is an important guarantee for the healthy and sustainable development of the construction industry.As one of the effective risk transfer methods and auxiliary management methods,insurance is increasingly used.The construction quality latent defect insurance(IDI insurance),which has been vigorously promoted in recent years,is one of them.This type of insurance can effectively improve the quality of construction projects,but it also requires standardized construction quality risk assessment services(TIS services)as support.However,under the current domestic management mode,how the construction quality risk assessment service can help insurance companies identify and avoid potential defects under IDI insurance to control quality risks still needs systematic research.This paper builds a project quality risk control model to solve the above problems on the basis of analyzing the formation path and key causative factors of project quality risk.The main research contents are as follows:1.The formation mechanism of construction quality risk is analyzed.Guided by the potential defects of construction engineering quality,10 construction engineering quality risk events affecting structural safety and use function were identified,and 35 engineering quality risk factors were identified based on the basic construction stage;The causal mapping relationship and weight of risk factors and risk events,the DEMATEL-ISM method is used to divide the hierarchical relationship of risk factors,and the important risk factors and levels of different risk events are determined.2.The construction quality risk control model based on the Bayesian network is constructed.Using Bayesian network theory,the analysis results of construction engineering quality mechanism are used as the prior knowledge of the expert background to access the model,and the probability of engineering quality risk events occurring is calculated,that is,the magnitude of engineering quality risk;the key risk factors of engineering quality risk are determined by reasoning analysis.Different quality risk control points affecting structural safety and functional safety are obtained.3.The construction engineering quality risk control model is verified and applied in combination with engineering project cases.The case study shows that the prediction results of the model are consistent with the experience judgment results of the project professional technicians,which verifies the scientificity and feasibility of the construction quality risk control model.According to the research route of mechanism analysis,model construction,and example verification,this paper reveals the formation path and key cause analysis of construction engineering quality risk and builds an applicable construction engineering quality risk control model under the background of insurance.The research results provide theoretical basis and quantitative evaluation tools for the implementation of construction quality risk control,and provide support for the development of IDI insurance and the standardization and improvement of tis services in China.