地基液化失效和隔震的临界孔隙水压力研究  

作　　者：张荣祥[1] 顾宝和[1] 石兆吉[2] 

机构地区：[1]建设部综合勘察研究设计院,北京100007 [2]国家地震局工程力学研究所,哈尔滨150080

出　　处：《工程勘察》1997年第2期5-7,共3页Geotechnical Investigation & Surveying

摘　　要：通过对室内试验和各种宏观液化现象中的超孔隙水压力分析发现，孔压比0．6是很有意义的临界值，当孔压比超过0．6以后饱和砂土层就将产生地基失效和隔震作用，并非一定要满足孔压比等于1．0才会产生宏观液化现象。Value 0.6 of pore pressure ratio is found to be a significant critical value through laboratory tests and various analyses of excess pore-water pressure in macroliquefaction. Ground with saturated sand will lose its bearing capacity and have the function of isolating earthquake as the pore pressure ratio is over 0.6. Macroliquefaction may occur even if pore pressure ratio does not reach to 1.0.

关 键 词：液化 孔压比 临界孔隙水压力 地基 隔震 

分 类 号：TU470.1[建筑科学—结构工程] TU413.7[建筑科学—土工工程]