2004•Journal of Tongji UniversityRequires access

Layout Model of Urban Elevation-road Ramp

Liao Yuan-ling

Abstract

Based on the characteristics of layout problem of urban elevation-road ramp,including the amount of ramp and space and types of ramp,after investigating the method for determining impact area of elevation-road and its traffic demand,a bi-level programming model of ramp layout was presented by using the idea of traffic network design problem(NDP).In the model,optional ramp was regarded as optional link of NDP.The model is a problem of 0-1 programing whose constrain field is non-convex.To solve the problem,a genetic algorithm was applied.At last,an example was given.

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Key concepts: Elevation (ballistics), Computer science, Genetic algorithm, Mathematical optimization, Transport engineering, Engineering, Mathematics, Structural engineering