Application Research of AHP in Quantitative Evaluation of Urban Overpass Demolition Scheme

Abstract

With the development of urban construction, some urban overpasses built in the early stage gradually cannot meet the needs of urban traffic due to various reasons, and the demolition of urban overpasses is gradually concerned by urban management departments, construction enterprises and relevant experts and scholars. Aiming at the evaluation problem of urban overpass demolition scheme, this paper establishes a quantitative evaluation model of urban overpass demolition scheme by AHP. The model contains 5 standards and 15 evaluation indexes, and carries out systematic quantitative evaluation of urban overpass demolition scheme from the aspects of safety, schedule, cost, technology and circular degree. Three alternative schemes of overpass demolition in a city are mechanical demolition scheme, static demolition scheme and blasting demolition scheme. The scheme with the highest score is selected through quantitative evaluation of the scheme. The validity of the method is verified. It provides effective suggestions for the following urban overpass demolition project.