Evaluation On The Risk On Urban Infrastructure Projects Based On Goal Multielement

With reference to the concept and theory studies achievements about urban infrastructure projects risk in both home and abroad , primarily considering the characteristics and general rules of urban infrastructure projects, we analysis the goal of urban infrastructure projects have the characteristic of multivariate .And based on Life Cycle Integrated Risk Management theory, this article analyzed the risk sources, risk characteristics and main risk types in different phases of project.Synthesizeing the above contents , the theory that is the multivariate goal influence on the risk evaluation of urban infrastructure projects is given. And on the stand of urban infrastructure projects index system structuring structure model, using multivariate theory , the whole objective of urban infrastructure projects is divided into many partial objectives, whereby it mades the multi-layer struckture of the risk factors more fitness. It mades the conception more defmitude and it mades the conclusion more scientific.Finally, to the risks exiting in the urban infrastructure projects are complex and difficult to evaluate precisely. Fuzzy theory is quoted in urban infrastructure projects risk analysis. Based on the combination of multi-layer fuzzy theory and AHP analysis, a fuzzy risk evaluation model of the multivariate goal of urban infrastructure projects is established. Moreover HangZhou West Lake Tunnel is taken as an example to show the application of this method, and to test the model initially.