The Value Simulation And Experiment Analyzes Of Broaden Reinforced Embankment Slope Stability Of Freeway

In recent years, due to the continuous development of China's economy, the volume of traffic is constant corresponding surge, especially in the developed coastal regions of the dramatic increase in traffic volume。In the interest of countries to meet the requirements of coastal traffic at the same time is also striving to develop the western region, the original low-grade highways and road capacity has been unable to meet demand, there is an urgent need to expand the existing Highway transformation. At present, China's main highway widening project in the coastal region which have wider distribution of the soft soil, poor foundation conditions, the new levy of land in these areas are difficult to highway expansion of the thorniest problems encountered; Mountainous region in the west, as more ditch slope Higher limitations of natural conditions, in the past, the low-grade highways can not meet the actual needs, demands broadened into a high-grade highway. Accordingly, in these areas Highway widening project on issues related to the project is very important significance.This paper, based on widening project of expressway from Yayao to Fukai in Guangdong Foshan, talks about feasible expressway widening scheme with no or little land requisition. Related test and value analysis are taken for reinforced, slope embankment scheme used in the project to determine effects of factors which influences engineering stability. Through the investigation has constructed and study with the related project which constructs, the analysis was summarizing the reinforced embankment and changes the extension reinforced embankment of the main project question and the disease characteristic. Through the dead load model experiment in the room, research embankment in the load function situation the internal stress and the grill strain change rule, may explain the embankment under top load function destruction situation. Through the gentrifugalism model test, the confirmation depends on the engineering design plan the security stability, for compares each correlation factor to the embankment project characteristic influence, in the experiment has manufactured the different model plan, through distorts, the destruction situation observation to the model whole displacement, the contrast different padding, the comparative analysis embankment different reinforced way and the embankment highly situation to entire opens up the embankment the displacement distortion characteristic. Uses finite element software to open up the partial different slopes compared to, the embankment highly, the geogrid spacing and the different geogrid intensity embankment to carry on the computation and the analysis, studies various factors to distort, the plastic area to the embankment whole displacement and the stress field to opens up the embankment the stable influence.Through on-site research and finite element analysis and laboratory testing on the steep embankment widened road projects reinforced characteristics of the related research, some results of which can be used as reference for the design and gives a certain standard.