摘要
研究目的:通过对风积沙路基特点、工程特性及压实原理等方面的分析,提出适合沙漠地区风积沙路基的干压法施工技术,较为合理的施工工艺、机械组合和压实遍数,为风积沙路基的压实提供理论依据。研究结论:通过振动台法确定最大干密度,提出适合沙漠地区风积沙路基干压法施工技术,不小于140匹马力的推土机、18～25t前后驱动的重型振动压路机、平地机作为路基填筑的机械组合;路基摊铺厚度每层控制在50～80cm,压实后保证40～60cm,不应超过60cm;施工工序为:推土机排压2～3遍→平地机精平→压路机静压1遍→压路机振压2～3遍→压路机静压收光完成终压。
Research purposes：Based on the analysis of the technical characteristics,engineering properties and compaction mechanism for aeolian sand,the suitable dry compaction technology is proposed for the aeolian sand roadbed in desert,including the construction technology,rational machinery combination and number of compaction,for the purpose of provding the theoretical basis for compaction of aeolian sand roadbed.Research conclusions：The maximum dry density can be decided by the vibrating compaction technique.The construction machinery combination is advised.Namely,the bulldozer （not less than 140 horsepower）,the back and forth driving road roller （18-25 t）,and the grader should be used together.The thickness of the carvel-built layer is controlled at 50-80 cm,and it is guaranteed at 40-60 cm,no more than 60 cm after compaction.The concrete process includes the 2-3 times rolling by bulldozer,the fine levelling by grader,the 1 time of stationary compaction by roller,the 2-3 times vibrating compaction by roller,the bulldozer stationary compaction by the roller.
出处
《铁道工程学报》
EI
北大核心
2010年第7期11-14,共4页
Journal of Railway Engineering Society
关键词
沙漠
风积沙路基
干压法
施工技术
desert
aeolian sand roadbed
dry compaction
construction technique
