高速公路路基砂土液化处理  

Treatment for Sandy Soil Liquefaction of Expressway Subsoil

作　　者：虞海珍[1] 李小青[1] 邬旭 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074 [2]武汉爱康沥青混凝土有限公司,武汉430075

出　　处：《交通科技》2006年第4期80-82,共3页Transportation Science & Technology

摘　　要：在分析饱和砂土液化机理的基础上,结合工程实例探讨挤密砂桩、振冲碎石桩、袋装砂井3种处理方法,优选出挤密砂桩法,使该路段砂土液化地基处理既经济又可靠。The treatment of sandy soil liquefaction is one of the most difficult problems in the expressway engineering. One expressway is in the high earthquake intensity of Ⅶ-Ⅷ and the engineering geological condition is also very bad existing both liquefaction sand and soft soil, which need to improve at the same time. Based on the analysis of the liquefied mechanism of saturated sand, this paper analyzes the effect of three measures such as compacted sand pile, vibro replacement gravel column and bag sand-well. The results indicated that compacted sand pile is the most effective and safe method for the highway.

关 键 词：高速公路 砂土液化 挤密砂桩 碎石桩 袋装砂井 

分 类 号：TU441.4[建筑科学—岩土工程] TU753.3[建筑科学—土工工程]