Risk Analysis of Butterfly Arch Continuous Girder Bridge's V-shaped Pier During the Construction Process on the Basis of AHP-GCA method

【摘要】：Based on the butterflyarch continuous girder bridge in HeiHe,China,this paper mainly deals with a quantitative risk analysis for V-shaped pier during the construction process,by using Analytic Hierarchy Process-Grey Correlation Analysis method.Firstly,hierarchical model of risk analysis is established,and structural property is identified as the highest risk factors during V-shaped pier construction using the AHP theory.Secondly,the optimal construction scheme with the least risk is chosen from candidates by using GCA method,according data obtained in AHP analysis.It concluded that,the AHP-GCA method shows good accuracy,and has an advantage over qualitative analysis.It is reasonable and applicable,providing a theoretical basis for risk decision-making during the construction of V-shaped pier.