Research On Risk Management Of BT Construction Project Based On Nonlinear Fuzzy Comprehensive Evaluation

In recent years, with the continuous improvement of the socio-economic level,accelerating the process of urbanization,the construction of infrastructure, the construction of affordable housing,the transformation of Shanty towns are beginning to use BT financing construction mode,lead to the risk of BT project highlights,therefore, the strengthening BT construction project risk management and control research has great theoretical and practical significance.The article elaborate the risk, risk management and make an overview about BT mode related theory,and made the comparise and analysis that the responsibility of investor,profit,the applicable scope about the variety of BT operation mode;From risk identification, estimation, evaluation, response and monitoring aspects discussed BT mode risk management processes,established the risk management system of BT project;It summarized the BT mode of political risk, technology risk, economic risk, natural risk and management risk thats five categories of risk;When analyzing BT project risk factors,by using AHP and the variation coefficient method were obtained its subjective and objective weight vector,then, combinate objective with subjective weighting vector empowered to determine the composition of each index weight vector;To compensate for the lack of linear weighted evaluation,proposed the nonlinear fuzzy comprehensive evaluation method with a prominent factor,by using the nonlinear fuzzy matrix composite operator to reflect a significant impact indicators that come true the Nonlinear Analysis of the BT project construction process risks,established the BT construction project risk assessment model. Used the model to specific cases,calculated risk scores for each risk factorand risk evaluate value of the entire project,put forward the corresponding risk management measures based on the evaluation results.