摘要
Abstract
The second double-line roadbed accounts for a large proportion in Lanzhou-Xinjiang High-speed Railway,which is the longest high-grade railway bed in China at present.There is almost Gobi desert along the line and the roadbed is almost gravel soil.This line adopts ballastless track,which has very strict requirement on compactness control and post-construction settlement.However,there is no special specification for railway at present.Based on the treatment technology of gravel soil foundation and the monitoring data,the effect of hammering compaction,impact rolling and heavy rolling are compared and their reinforcement mechanism are separately analyzed.The results show that these three methods can all satisfy design requirement for reinforcement of gravel soil foundation in Gobi area.But through comprehensive comparison,heavy rolling can achieve the best effect,which is preferred for treatment.关键词
高速铁路/戈壁/碎石土/地基处理/试验Key words
high-speed railway/Gobi/gravel soil/foundation treatment/test分类
交通工程
