黄土室内液化试验饱和方法的研究现状及前景展望  

Status quo and prospect of research on saturated methods in loess liquefaction test

作　　者：王平[1,2,3] 王谦[1,2,3] 王兰民[1,2,3] 马海萍[1] 王鼐[1,2,3] 

机构地区：[1]中国地震局兰州地震研究所,甘肃兰州730000 [2]中国地震局黄土地震工程开放实验室,甘肃兰州730000 [3]甘肃省岩土防灾工程技术研究中心,甘肃兰州730000

出　　处：《世界地震工程》2011年第4期86-90,共5页World Earthquake Engineering

基　　金：中国地震局地震预测研究所基本科研业务经费项目(2010A88-4);国家自然科学基金项目(50978239);甘肃省地震局地震科技发展基金项目(2011S01);兰州地震研究所论著编号(LC2011009)

摘　　要：黄土液化是黄土地区的三大典型震害之一,是黄土动力学研究的前沿课题;截至目前,室内动三轴液化试验仍是研究黄土液化的主要方法,而试样饱和度的高低是影响黄土液化试验结果的关键因素;首先从土的性质和饱和的主要指标对砂土和黄土饱和的差异进行了对比,而后通过对现行的主要饱和方法进行了详细的叙述,归纳总结了黄土室内液化试验饱和方法的研究现状,同时结合黄土本身大孔隙、弱胶结的特性,就现行主要饱和方法对黄土饱和的适用性进行了评述,提出了每一方法的优缺点;并结合反压饱和方法在黄土饱和中的应用现状,对该方法在黄土饱和中的应用前景进行了展望。Loess liquefaction is one of the typical earthquake damages in the loess region,which is the most advanced subjects of loess dynamics in recent years.Up to now,the dynamic triaxial test is still the main method to study loess liquefaction,and the saturated degree is the main influence factors of the test.In this paper,the difference between sand liquefaction and loess liquefaction was compared based on the analysis of the soil characteristics and saturated indexes,and the study situation of saturated methods was summarized based on discusses of the main saturated methods.Meanwhile,the applicability of the methods for loess sample saturated was commented by involving the big pore and weakly cemented properties of the loess.Finally,the prospect of the application of back pressure method in loess sample saturated test was discussed based on the application actualities of the method in the loess saturated test.

关 键 词：黄土液化 饱和方法 研究现状 展望 

分 类 号：TU41[建筑科学—岩土工程] P315.9[建筑科学—土工工程]