锚杆挡墙在填方路基中的应用

Application of Anchor Retaining Wall in Filling Subgrade

锚杆挡墙作为新形式挡墙,具有很大的优势。自重轻,要求基底承载力较小;抗滑稳定性和抗倾覆稳定性更强;挡墙高度更高;肋柱、档板采用预制,施工质量更易控制。同时锚杆挡墙也具有一定的劣势,施工工艺较复杂;测量精度要求高,锚杆钻孔,注浆要求较高;预制肋柱、预制档板需要吊装;土工格栅分层铺筑,增加施工难度,影响施工进度。但在山区公路中,锚杆挡墙在挡墙高度上、安全性上、环境保护上优越于传统的重力式挡墙,值得推广。

As a new form of retaining wall,the anchor retaining wall has great advantages.The self-weight is light,the base bearing capacity required is small;the anti-sliding stability and anti-overturning stability are stronger;the retaining wall height is higher;the ribs and baffles are prefabricated,and the construction quality is easier to control.At the same time,the anchor retaining wall also has certain disadvantages:the construction process is more complicated;the measurement accuracy is high,the bolt drilling and the grouting requirements are high;the prefabricated ribs and the prefabricated baffles need to be hoisted;the geogrid is layered and paved,which increases construction difficulty and affects construction progress.However,in the mountain roads,the anchor retaining wall is superior to the traditional gravity retaining wall in the height,safety and environmental protection,so it is worth promoting.