古滑坡体上的挖填方路基边坡设计方案研究

搞要：古滑坡体上的挖填方边坡工程是一件十分困难的事情，作者结合一个工程实例，对古滑坡体的路基工程设计与施工作了一些探讨。贵阳市水东路乌当区段K8＋200～＋540古滑坡挖填方边坡的治理就是这样一个工程。在该工程中，根据工程地质的实际情况，采用了桩基托梁路肩挡土墙与锚索桩板墙相结合的方法，在施工中采用了美观大方的结构形式、对桩身截面尺寸与长度控制、桩顶位移监测等措施，完成了这一古滑坡体上的路基工程。工程已经历四年雨季和使用考验，结果表明该设计与施工方法安全可靠，结构与环境和谐、新颖自然、美观大方；工程造价低廉，施工简便，工期较短，通车后运行状况良好，经济效益显著。关健词：古滑坡体；路基边坡工程；设计与施工方法中图分类号：u416．1文献标识码：A文章编号：1672-4747（2013）02—0031—07

Study of Cut-and-fill Roadbed Engineering Design and Construction on an Ancient Landslide Mass

It is very difficult to makeacut-and-fill slopengineeringonanancient landslide mass. An engineering example was used to study in this aspect. Wudang Section K8＋200~ ＋540 of Guiyang Shidong road gets through an ancient landslide mass aera. According to the site condition, a road shoulder protecting wall supported by pile foundation conbined with anchor rope retaining slab wall was adopted in the design plan, meanwhile, some monitoring measures were used in construction, such as, controlling the pile top displacement, adopting proper pile size and length and smart construction style, etc. By four years＇ use, the roadbed is stable, the ancient mass is stable, the construction term is shorted and lots of cost are saved.