工程地质学报
工程地質學報
공정지질학보
2015年
4期
604-608
,共5页
谷天峰%王家鼎%刘亚明
穀天峰%王傢鼎%劉亞明
곡천봉%왕가정%류아명
循环荷载%压实黄土%动强度%振次
循環荷載%壓實黃土%動彊度%振次
순배하재%압실황토%동강도%진차
Cyclic loads%Compacted loess%Dynamic strength%Vibration times
移山填沟进行新区建设或修建机场,是黄土地区应对建设用地不足而采取的一项新措施。进行压实黄土的动强度特性研究,对高烈度黄土地区大规模移山填沟具有重要的理论和现实意义。本文利用 GDS振动三轴仪对吕梁压实黄土的动强度特性进行了研究,分析了含水率、干密度和加载频率对其动强度的影响规律。结果表明:压实黄土的动强度随含水率的增大而减小,随干密度和加载频率的增加而增大;含水率对压实黄土的动强度影响显著;压实黄土的动强度随着振次的增加而减小,用半对数坐标系下的直线方程拟合效果较好。
移山填溝進行新區建設或脩建機場,是黃土地區應對建設用地不足而採取的一項新措施。進行壓實黃土的動彊度特性研究,對高烈度黃土地區大規模移山填溝具有重要的理論和現實意義。本文利用 GDS振動三軸儀對呂樑壓實黃土的動彊度特性進行瞭研究,分析瞭含水率、榦密度和加載頻率對其動彊度的影響規律。結果錶明:壓實黃土的動彊度隨含水率的增大而減小,隨榦密度和加載頻率的增加而增大;含水率對壓實黃土的動彊度影響顯著;壓實黃土的動彊度隨著振次的增加而減小,用半對數坐標繫下的直線方程擬閤效果較好。
이산전구진행신구건설혹수건궤장,시황토지구응대건설용지불족이채취적일항신조시。진행압실황토적동강도특성연구,대고열도황토지구대규모이산전구구유중요적이론화현실의의。본문이용 GDS진동삼축의대려량압실황토적동강도특성진행료연구,분석료함수솔、간밀도화가재빈솔대기동강도적영향규률。결과표명:압실황토적동강도수함수솔적증대이감소,수간밀도화가재빈솔적증가이증대;함수솔대압실황토적동강도영향현저;압실황토적동강도수착진차적증가이감소,용반대수좌표계하적직선방정의합효과교호。
Moving mountains to fill out the ditch is a new measure to deal with the shortage of construction land inloess areas.Conducting dynamic strength characteristics research on compacted loess has important theoretical andpractical significance for largescale site formation of moving mountains to fill out the ditches in loess areas of highseismic intensity.This paper uses GDS vibrating triaxial to study the dynamic strength characteristics of Lvliangcompacted loess under different conditions of the moisture content,dry density and loading frequency.The resultsshow that the dynamic strength reduces with the increasing of moisture content and increases with the increasing ofdry density and loading frequency.The moisture content has significant effect on the dynamic strength of compactedloess.The dynamic strength of compacted loess decreases with the increasing of vibration times.Linear equationsunder a semi-logarithmic coordinate can be used to fit their relationship.