加筋土挡墙在张唐重载铁路高路堤中的应用

Application of Reinforced Soil Retaining Wall in High Embankment for Zhangjiakou—Tangshan Heavy Haul Railway

结合张唐重载铁路工程高路堤加筋土挡墙,介绍了加筋土挡墙设计方案比较、横断面型式选择、设计依据及检算方法、现场监测分析等情况,指出工点加筋土挡墙侧向土压力、土压力系数仅为理论计算值1/2~1/3;拉筋水平应变小于0.7%,远小于设计值。说明了加筋土挡墙具备经济适用、美观大方的特点,可进一步优化设计并在铁路工程中推广使用。

Depending on the reinforced soil retaining wall for the high embankment of Zhangjiakou—Tangshan Heavy Haul Railway,the comparison of design schemes,the selection of section forms,the design basis and check calculation method,and in-situ monitoring analysis were introduced herein.It was pointed out that,for the reinforced retaining wall on the construction site,the lateral earth pressure and the coefficient of earth pressure are only half to one third of the theoretical values,and the horizontal strain of reinforcement is less than 0.7%and far below the design value.Therefore the reinforced soil retaining wall is proved to be economical,appropriate and beautiful,thus may be popularized in railway engineering with further optimization in design.