Optimization And Research For The Freeway Interchange Design Scheme

The interchange takes the freeway important constituent, Regardless of its investment or the function which displays in the entire road is pivotal. The interchange project design fit and unfit quality, to the project investment, the benefit and the technical rank, the service level height as well as the traffic safety, will all have the direct influence. Therefore the interchange shaping to the freeway construction will be very important. The interchange pattern are very many, the factor which affects its design proposal choice is also many, Such as natural terrain, economical, intersection classification of roads, traveling capability, charge request and so on, To an identical road crossing intersection, appropriate pattern often is no only one, even if the identical pattern, selects the different arrangement method which is also to be able to produce the different results. This request in interchange design earlier period, not only should choose the appropriate pattern, moreover should have the reasonable scheme of arrangement, namely carries on the multi-plans to the interchange design and selects the fine design proposal.This article mainly aims at the research of the freeway interchange in the plan and the design process, how to design the most superior scheme. The method mainly is unifies the design of Hebei Province Tang-Cao freeway interchange, first theoretically discusses and proofs system fuzzy optimization theoretical model, and unifies the analytic hierarchy process, establishes the interchange optimal quality synthetic evaluation target system, carries on the theoretical model to choose and proof. Unifies Tang-Cao freeway construction example, proved this model and method feasibility in reality and the precision may satisfy the actual project precision request, finally determines in the technology feasible and economy reasonable interchange scheme.This article carries on from following several aspects: Introduced the domestic and foreign freeway interchange development situation and the interchange scheme optimize on the present situation, the interchange shaping, freeway interchange commonly used pattern, interchange scheme quality synthetic evaluation target system, through Tang-Cao freeway interchange design and optimization, Summarizes the the basic mentality and the method of plan optimizes in the freeway interchange design. This article offers a feasible design method to project designer, for everybody's reference.