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一、前言黄土地区的铁路,由于受其地形的限制,高填路堤很多,而现有线路上路堤的下沉是普遍而严重的。如西安至坡底段竣工后仅一年半时间,路堤普遍下沉0.3米左右。现行《路基填土压实技术规则》对高填路堤压实标准的规定比较笼统,如规定预留沉降量为堤高的1～3％,施工单位不易掌握。因此,研究黄土路堤下沉规律,提出一套较切合实际的计算路堤下沉的方法,以便为确定路堤压实度及预留沉降量提供计算依据,就显得十分必要。二、计算黄土路堤堤身下沉的方法路堤的下沉包括堤身的变形及基底下沉,对基底的下沉可用计算地基基础下沉的方法,
I. INTRODUCTION Railroads in the loess area have many embankments due to the limitation of their terrain. The sinking of embankments on existing lines is widespread and serious. For example, only a year and a half after the completion of Xi’an to the bottom of the slope, embankments generally sink about 0.3 meters. The existing “Subgrade Filling and Compaction Technical Code” complies with the general requirements for compaction standards for embankment embankments. If the amount of subsidence reserved is 1-3% of the embankment height, the construction unit can not easily grasp it. Therefore, it is necessary to study the law of subsidence of loess embankments and put forward a more practical method of calculating the subsidence of embankments in order to provide calculation basis for determining embankment compaction and reserving subsidence. Second, the method of calculating embankment embankment sinking Embankment embankment, including the deformation of the sink and the sink, the sinking of the foundation can be used to calculate the method of foundation subsidence,