The Research On Applicability Of Low Filled Embankment Expressway Scheme

The expressway embankment has always being designed in a high height in our country for a long time, but the high filled embankment has a series of disadvantages which can't be conquered. For the sustainable development of our national economy construction and the decrease of expressway's occupation of the land resource, as well as the debasement of the negative influence from the high filled embankment, low filled embankment design concept has be universally approved and be widely applied in our national expressway construction. With the completion of North Suzhou Expressway around City, Yan-tongand Hu-ning Expressway, the concept of low filled embankment brings great economic and social benefits. But our country has special situation different from others, such as high population density, complex population trip, and complicated road net distribution, and imbalance of local economy, etc. All of them make great troubles during the course of application. If not analysis the region geography, traffic and population trip features, adopting this concept blindly will influence the normal life of local and the development of land, and even worse it will block the social economic.Firstly, the article brings forward the connotation of low filled embankment applicability. Then disassembles every connotation and summarizes the according value index to establish the value system for the low filled embankment applicability. By twi-AHP(Analytical Hierarchy Process) to confirm the be-building expressway is suitable to adopt low filled embankment scheme or not, sequentially avoid the influence on local population trip and the economy development from emphasizing the low filled embankment expressway scheme blindly. While it will put forward the procedure for low filled embankment scheme planning and actualizing to guide the programming of expressway and the design for management department. As a result it will make the expressway have a reasonable filled embankment height and resolve the continuous problems result from the high embankment height, and the result is economizing the land resource and the investment for road construction, and also can protect the environment and reduce the disease after the construction of expressway.