摘要
铁路建设工程的快速发展带来路基填料资源匮乏的难题。本文以滇南地区的高速铁路项目为依托,对细角砾土开展工程特性研究,设立现场对比试验区,通过现场路基压实试验,确定摊铺系数、松铺厚度、施工最佳含水率、压实的速度和遍数等工艺参数。同时,对其压实指标进行检测,与粗粒含量较高的A,B组填料路基压实效果进行比较分析,评估滇南地区高速铁路路基填料的适用性,提出细角砾土填筑路基的改良措施。
The rapid development of railway construction project brings such difficult problems as resource lack of subgrade filling material. Based on high speed railway project in southern Yunnan, the engineering properties of fine breccia soil were studied. Through setting a contrast field test area and field subgrade compaction experiments, the technological parameters such as spreading coefficient, loose paving thickness, optimum water content, compaction speed and times were determined. The compaction indexes were detected, and the subgrade compaction effects were analyzed compared to A and B group with material of high coarse grain content. The suitability of high speed railway subgrade filling material in southern Yunnan was evaluated and the improved construction technology measures of fine breccia soil used as subgrade filling material were put forward.
出处
《铁道建筑》
北大核心
2016年第6期92-95,共4页
Railway Engineering
基金
中交第四航务工程局有限公司基础科技研发项目(Y2014B25)
关键词
细角砾
高速铁路
路基填料
适用性
施工工艺
Fine breccias
High speed railway
Subgrade filling material
Suitability
Construction technology
