共振密实法加固可液化地基的应用研究  

Application of resonant vibro-compaction in treatment of liquefiable sites

作　　者：程远[1,2] 刘松玉[1,2] 

机构地区：[1]东南大学岩土工程研究所,江苏南京210096 [2]苏州市轨道交通集团有限公司,江苏苏州215004

出　　处：《岩土工程学报》2013年第S2期83-87,共5页Chinese Journal of Geotechnical Engineering

基　　金：国家科技支撑计划项目(2012BAJ01B02);江苏省交通科研计划资助项目(2010Y28)

摘　　要：共振密实法是一种新型可液化地基处理方法,在回顾国内外共振密实法的加固机理研究成果基础上,自行研制了十字形振动翼及整套施工设备。结合工程实例,采用孔压静力触探试验、剪切波速试验和标准贯入试验等原位测试技术对可液化地基加固效果进行了评价,并与碎石桩法和强夯法进行了工程经济比较。结果表明:共振密实法能有效的消除液化,且工程造价低,经济效益明显。The resonant vibro-compaction is a new ground improvement method for liquefaction sites. On the basis of the review of the reinforcement mechanism of the resonant vibro-compaction, a crisscross section vibratory probe and the relevant construction equipments are developed by the authors. The application of the deep resonant vibro-compaction in the ground treatment of silty liquefiable site is presented. Comparative tests including the piezocone penetration test, shear wave velocity measurement and standard penetration test before and after improvement are conducted to assess the liquefiaction resistance, and the economic efficiency of the resonant vibro-compaction is compared with that of the replacement stone column and dynamic compaction. It is shown that the resonant vibro-compaction is an effective way for liquefaction mitigation, and it has good economic efficiency.

关 键 词：共振密实法 液化 十字形振动翼 原位测试 经济效益 

分 类 号：TU472[建筑科学—结构工程]