CAJ | 학술논문

预测软土地基次固结沉降,取上海祁连山南路地铁站地层土样进行三轴压缩固结试验,分析次固结系数的变化特征并探究各个影响因素对次固结系数的影响,主要对不同土性指标、不同载荷条件次固结系数变化特征进行试验研究.结果表明:次固结系数会随着土性指标的变化而变化,其影响力不会随载荷的变化而减弱,表明土性指标对次固结系数影响起主导作用;次固结系数也会随载荷条件的变化而变化,但这种影响与土层所在的位置有关,对于深部土层以及压缩性较低的土层这种影响可以忽略不计,载荷因素对次固结系数影响起辅助作用.
예측연토지기차고결침강,취상해기련산남로지철참지층토양진행삼축압축고결시험,분석차고결계수적변화특정병탐구각개영향인소대차고결계수적영향,주요대불동토성지표、불동재하조건차고결계수변화특정진행시험연구.결과표명:차고결계수회수착토성지표적변화이변화,기영향력불회수재하적변화이감약,표명토성지표대차고결계수영향기주도작용;차고결계수야회수재하조건적변화이변화,단저충영향여토층소재적위치유관,대우심부토층이급압축성교저적토층저충영향가이홀략불계,재하인소대차고결계수영향기보조작용.
@@@@In order to predict soft soil’s secondary consolidation settlement, this study takes the soil samples at South Qilianshan subway station to conduct triaxial apparatus test and analyzes the variation features and several influencing factors of the coefficients of secondary consolidation. The study investigates how distinct soil indicators and load conditions influence the coefficients. The result shows that different soil indicators lead to different coefficients regardless load conditions. Therefore, the soil indicator playes a leading role in the influence on the coefficients of secondary cosolidation. Furthermore, different load conditions can also generate different coefficients, however, this impact has a relationship with the locations of soil layers. For deep layers and lower compressibility layers, this impact may be ignored. Therefore, it concludes that the load factor takes a supplimentary role.