Study On Scheme Rationality Of Highway Alignment

The highway traffic fast development as well as the mountainous area of Midwest set a higher request to the highway design, construction, management and maintenance the technology, the route rationality is one of the chief questions. Due to the complexity of mountainous terrain, geology, hydrology, ecology and the mountainous area expressway high requirement for the flat, vertical line shape, make the rationality of the route study becoming the objective demand as well. This article starts off the route selection characteristic and the basic theory puts forward the rational research topic of highway route, and researches concepts, methods, procedures and so on, supporting line rationality, in order to achieve sustainable development of road traffic.This article lodges the guiding thoughts and design idea of route design to suit our national condition, which are taking the function as the master line, taking the security as the core, humanist, reasonably uses the technical standard, nimbly utilizing the technical specification, harmonizing the relationship of environmental protection, economy and landscaping, guarantees the sustainable development of highway construction. It provides the methodology level instruction for guaranteed our national highway route design rationality.Do the systemic research at the first time in choice method in route corridor belt, solved the question lacking the available operating method and the procedure of choice method in road corridor belt, lay the foundation for the route plan choice rationality.Do the system research in the choice method of route scheme, putting forward principles, steps, procedure and the method of ecology route selection and the security route selection. This prides a powerful tool for designers in route selection process to reasonable correspond to each kind of influence factor and the solution of design principal contradiction.Put forward dividing the route scheme evaluation work into two stages thought ,reconnaissance plan and geometric design, utilizing fuzzy quality synthetic evaluation method which based on analytic hierarchy process, established the route scheme evaluation system, better comprehensive reflecting various factors that influence route plan determination, realized the route scheme on scientific and synthetic evaluation.