浅析德香高速公路中几种特殊路基处理的应用

Analysis on the application of several special roadbed treatment in De-Xiang Expressway

德香高速公路地处低山微丘与波状沙丘、平原水草、沼泽地相间的不良地质处。主要不良地质有风积沙、水草盐碱沼泽地、盐渍土、地震液化地等,特殊路基多,地形复杂。在实际施工中我们对特殊地段进行了强夯置换、冲击碾压、堆载预压等施工工艺。

De-Xiang Expressway is located in the hilly and wave-like sand dunes,plains,wetlands and other adverse geological location. Because these unfavorable geology has aeolian sand,the saline-alkali marsh,the saline soil,the earthquake liquefaction ground and so on,moreover the terrain is complex,therefore the special roadbed is many. In order to solve the above problems,in the actual construction,we carried out the construction technology of dynamic compaction replacement,impact roller compaction and preloading.