土工材料在加陡路堤边坡中的应用分析

研究目的：迫于土地资源日益紧张、修建平原地区铁路填料匮乏的压力，探索和寻求采用土工合成材料加陡路堤边坡坡率，以达到节省土地资源的目的。研究方法：结合西安枢纽北环线工程实例，采用填料和土工材料的试验力学参数，通过对各种边坡稳定性检算方法的分析比较后，选用圆弧滑动面垂直条分法对路堤稳定性进行了分析。研究结果：得出路堤边坡内分层铺设高密度聚乙烯单向土工格栅加筋带、适当加陡路堤边坡坡率，能满足现行规范对路堤边坡稳定性的要求。研究结论：理论研究和工程实践表明，采用土工合成材料加陡路堤边坡坡率在平原高产农田区能节省珍贵的土地资源，具有良好的经济效益和社会环境效益。

The Application Analysis of Geosynthetic in Steepened Embankment Slopes

Research purposes: By force of the deficiency of soil resources and the filling in the plain area railway constructions,this paper introduces geosynthetic steepened embankment slopes to save soil resources.Research methods:This paper compares and analysis the slope stability with the filling and geosynthetic examination mechanics coefficients by the Xi'an hinge north cincture railway project as example.Research results:The high-density polyethylene reinforcement geogrid samdwich used in the steepened embankment slopes can meet the stability regulations.Research conclusions:The geosynthetic had been used to steepened embankment slopes can save the soil resources in the plain area where the soil resources are deficiency and precious.And geosynthetic reinforcement embankment slope can obtain great economy and social benefit on plain agriculture high yield area.This paper broadens the applications of geosynthetic in railway subgrade engineering.