新建高速石质挖方并线拼宽既有高速施工技术

The Construction Technology for the Newly-Built Highway Stone Excavation Splicing with the Existing

随着基础设施建设的步伐加快,以及众多3P类基础设施项目的增多,致使全国范围内出现了大量的公路建设项目。因路网的交叉建设,出现了更多的高速公路间的并线拼宽及跨越项目。新建高速与既有高速的拼接的项目很多,但多数拼接均为填方路基的拼接施工,类似于挖方拼接加宽高速的项目很少,石质挖方拼接既有高速更是少之又少,是常规开挖方式难以实施解决的。因此,石质挖方并线既有高速施工技术的研究十分重要。

With the rapid pace of infrastructure construction and the increase of many kinds of infrastructure projects, a large number of highway construction projects have appeared in the whole country. Due to the cross-construction of the road network, more splicing and cross-over projects have emerged. The newly-built and existing highway spliced projects occupy a lot, but most of the splicing are the splicing construction of the filling subgrade. There are few excavation width expansion projects. It is also rare for the stone cut and splicing,which is difficult to implement for the conventional method of excavation. It is very important to study the highway construction technology for the stone excavation splicing with the existing.