高速公路路基沉降加固处理施工技术

Construction Technology of Settlement Reinforcement of Expressway Subgrade

以某已运营高速公路为依托,针对部分"三背"填料及填方路基段出现不同程度的沉降变形、影响行车安全的问题,采用注浆加固、路面抬升等措施进行处理,并通过合理交通导改,最大限度的减小了对已运营高速公路的行车影响。经后期沉降观测表明,加固处理取得了良好的效果,避免了在今后强降雨、超载车辆的荷载作用等因素的影响下,引发更大规模的沉降、跳车现象。

Taking an operated expressway as the engineering background, aiming at the problems of different degrees of settlement and deformation in some "three back" filling and filling subgrade sections, which affect the driving safety,grouting reinforcement, pavement lifting and other measures are adopted, and the driving impact on the operated expressway is minimized through reasonable traffic guidance. The later settlement observation shows that the reinforcement treatment has achieved good results, avoiding the phenomenon of larger-scale settlement and vehicle jumping under the influence of heavy rainfall and the load of overloaded vehicles in the future.