CAJ | 학술논문

通过自行设计的崩解试验和饱和前后的无侧限抗压强度试验,对宝兰客运专线强湿陷性黄土水稳性进行试验研究,试验结果表明：宝兰强湿陷性黄土遇水前后抗压强度衰减显著,水稳性很差。压实度在100%的试样崩解时间仅为35~40 min；相同时间下,压实度提高可以降低毛细水的上升高度,减缓其崩解速度,有效提高其抗渗性。饱和前后土样的应力应变关系均呈应变软化型变化规律；饱和前后土样的无侧限抗压强度差值达到295.0 kPa,强度衰减约77.1%。
통과자행설계적붕해시험화포화전후적무측한항압강도시험,대보란객운전선강습함성황토수은성진행시험연구,시험결과표명：보란강습함성황토우수전후항압강도쇠감현저,수은성흔차。압실도재100%적시양붕해시간부위35~40 min；상동시간하,압실도제고가이강저모세수적상승고도,감완기붕해속도,유효제고기항삼성。포화전후토양적응력응변관계균정응변연화형변화규률；포화전후토양적무측한항압강도차치체도295.0 kPa,강도쇠감약77.1%。
The water stability of Collapsible Loess in Baoji-Lanzhou Passenger-dedicated Line is studied with disintegration test and unconfined compressive strength test. The results show that the compressive strength of Collapsible Loess in Baoji-Lanzhou Passenger-dedicated line is declined rapidly with poor water stability. When the compactness of soil samples is about 100%, the time of disintegration is only 35~40min, meanwhile, with the increasing of the compaction, the height of capillary water is increased which accelerates the rate of disintegration and improves the permeating-resisting performance. The stress-strain curve of the soil samples before and after saturation demonstrates strain softening. The difference of the unconfined compressive strength of the soil samples before and after saturation reaches 295. 0 kPa, and the strength attenuates about 77. 1%.