浅谈沙漠地区风积沙路基干压法施工技术

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Abstract 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(1 8—25 t)，and the grader should be used together．The thickness of the carrel—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．

Key words： desert aeolian sand roadbed dry compaction construction technique

Received: 27 April 2010

PACS:

U416. 1+66 /U215. 7

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2010/V27/I7/11

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