变电站中减饱和法液化地基处理的原理与方法  

The Principle and Method of Liquefaction Foundation Treatment by Desaturation Method in Substations

作　　者：侍成 鄢博 陈俊杰 Shi Cheng;Yan Bo;Chen Junjie(Economic and Technical Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210008,China)

机构地区：[1]国网江苏省电力有限公司经济技术研究院,南京210008

出　　处：《粘接》2021年第7期171-175,共5页Adhesion

摘　　要：地基液化会给建筑设施带来灾难性的影响,是岩土地震工程面临的主要问题之一。传统液化地基处理方法强夯法、挤密砂桩法、碎石桩和水泥土搅拌桩等在工程实践中存在成本较高且技术复杂的问题。新型的液化地基处理方法减饱和法,相对于传统液化地基处理方法具有成本低,简单易操作等诸多优势。从加固机理、减饱和的几种产气方法、产生气体的形态及稳定性等几方面对减饱和法进行介绍和分析,对变电站建设降低地基处理成本提供了技术支撑。Foundation liquefaction will bring catastrophic effects on cons truction facilities,and it is one of the main problems in geotechnical seismic engineering.Traditional liquefied foundation treatment methods such as dynamic coMPaction method,coMPacted sand pile method,gravel pile and cement-soil mixing pile have high cost and complicated technology in engineering practice.The new type of liquefied foundation treatment method,the desaturation method,has many advantages,such as low cost,simple and easy operation,coMPared with the traditional liquefied foundation treatment method.Introduce and analyze the desaturation method from the aspects of reinforcement mechanism,several gas production methods for desaturation,the form and stability of the gas produced,and provide technical support for the construction of substations to reduce the cost of foundation treatment.

关 键 词：地基液化 砂土 减饱和法 

分 类 号：TU473.1[建筑科学—结构工程]