Study On Foundation Treatment For Yu Yan Highway Collapsible Loess

With the development of the western region, economic and technological leap ,various large-scale infrastructure construct in the western region, especially in road construction has made rapidly development. However, the loess area is widely distributed in western of China ,the nature of the works are in poor, especially the loess collapsibility is much serious, in order to ensure the quality of the projects, we must be processed the collapsible loess to meet the engineering requirements.This paper relys on GZ40 National Trunk Highway Yukou～Yanliang sections of collapsible loess roadbed treatment for engineering background. In summing up the results of previous studies, based on the conventional indoor and outdoor experiments, the paper makes a analysis to the Yu Yan highway's collapsible loess engineering characteristics , and gives the range of basic physical and mechanical indicators ,this offers basic data for the collapsibility loess roadbed treatment.Due to the field situation of Yu Yan highway's collapsible loess foundation ,through vibration rolling, impact rolling and dynamicing test of entities Engineering road, and combining with laboratory test and field tests, this paper does a theoretical analysis and Research , and then determines that the best method in dealing with collapsible loess foundation. Monitoring results show that the Yu Yan highway's foundation is stable, and it can be widely used in similar areas of foundation treatment.