饱和粉土液化和应变特性试验研究

英文篇名：Experimental study on liquefaction and strain properties of saturated silt
中文刊名：地震工程与工程振动
英文刊名：Earthquake Engineering and Engineering Vibration
作者：景立平 ; 罗强 ; 崔杰
英文作者：Jing Liping~(1 ; 2) ; Luo Qiang~(1) ; Cui Jie~(3) (1.Institute of Engineering Mechanics ; China Earthquake Administration ; Harbin 150080 china ; 2.Insitute of Geophysics ; China Earthquake Administration ; Beijing 100081 ; China ; 3.School of Civil Engineering ; Harbin Institute of Technology ; Harbin 150090 ; China)
中文关键词：粉土 ; 液化 ; 三轴试验 ; 孔压模型 ; 永久应变势
英文关键词：silt ; liquefaction ; dynamic triaxial test ; pore water pressure model ; residual strain power
出版日期：2006-10-30
机构：中国地震局工程力学研究所,中国地震局工程力学研究所,哈尔滨工业大学土木工程学院黑龙江哈尔滨150080,中国地震局地球物理研究所,北京100081,黑龙江哈尔滨150080,黑龙江哈尔滨150090
年：2006
期：05
出版单位：地震工程与工程振动

摘要

对取自徐州市棠张镇拟建京沪高速铁路路基的粉土,在试验室内按不同的干密度和细粒含量进行重塑,完成了三组不同干密度和四组不同细粒含量的振动三轴液化试验。分析了粉土干密度和细粒含量对饱和粉土抗液化强度的影响;通过曲线拟合方法建议了粉土振动液化过程中的孔压增长模型和永久应变势模型,给出了模型参数。
The silt samples studied in this test program were reconstituted in term of four different fines content and three different dry densities.The silt is from the roadbed of railroad in Tangzhang town,Xuzhou city. Seven sets of tests were carried out with dynamic triaxial apparatus.The liquefaction resistance affected by fines content and dry density of silt was analyzed.The dynamic models of development of pore water pressure and residual strain of silt are suggested by fitting a curve to the test results,and the parameters of these models are provided.

引文

[1]曹宇春,王天龙.上海粉土液化特性及孔压模型的试验研究[J].上海地质,1998,3:60~64.
    [2]阮永芬,巫志辉.饱和粉土的若干动力特性研究[J].岩土工程学报,1995,17(4):100~106.
    [3]王建华,要明伦.循环应变下饱和砂(粉)土衰化动力特性研究[J].水利学报,1997,7:24~30.
    [4]景立平,崔杰,等.徐州市堂张镇饱和粉土液化性能试验研究[J].地震工程与工程振动,2004,24(6):160~164.
    [5]景立平,崔杰,等.粉土液化的小型振动台试验研究[J].地震工程与工程振动,2004,24(3):145~151.
    [6]陈国兴,等.南京粉质粘土与粉砂互层土及粉细砂的振动孔压发展规律研究[J],岩土工程学报,2004,26(1):79~82.
    [7]Law K T,L ing Y H.L iquefaction of granu lar soils w ith non-cohesive fines,TenthW orld Conference on Earthquake Engineering[C].Balkma,1992,1491~1496.
    [8]Polito P,Martin R.E ffects of nonplastic fines on the liquefaction resistance of sands[J].Geotechn ical and Geoenvironm ental Engineering,2001,127(5):408~415.
    [9]Xenak i V C,Athanasopou los G A.L iquefaction resistance of sand-siltm ixture:an experim ental investigation of the effect of fines[J].Soil Dy-nam ics and Earthquake Engineering,2003,23:183~194.
    [10]石兆吉,等.饱和轻亚粘土地基液化可能性判别[J].地震工程与工程振动,1984,4(3):71~81.
    [11]谢君斐.非纯净砂性土液化势的经验判别[J].国外地震工程,1984.4:46~48.
    [12]张克绪,谢君斐.土动力学[M].北京:地震出版社,1989.