CAJ | 학술논문

研制了一套新三轴试验仪,该仪器能将堆载和真空加载在土样上,在固结进行中能同时监控超孔隙水压力、轴向应变(沉降)与体积应变.并根据浙江省温州市原状软粘土进行了固结试验,软粘土的天然含水率是72.5%.试验结果发现,真空预压、堆载预压或真空堆载联合预压3类加固方式中,粘土的固结特性没有明显差异.研究表明3种加固方法改变了软土的一些物理属性并改善了它的力学属性.
연제료일투신삼축시험의,해의기능장퇴재화진공가재재토양상,재고결진행중능동시감공초공극수압력、축향응변(침강)여체적응변.병근거절강성온주시원상연점토진행료고결시험,연점토적천연함수솔시72.5%.시험결과발현,진공예압、퇴재예압혹진공퇴재연합예압3류가고방식중,점토적고결특성몰유명현차이.연구표명3충가고방법개변료연토적일사물리속성병개선료타적역학속성.
A new triaxial apparatus was designed and manufactured.It is able to apply surcharge and combined vacuum-surcharge pressures on soil samples,and allows for monitoring of excess pore-water pressure,axial strain or settlement,and volumetric strain during the process of consolidation.Tests were performed using the apparatus on undisturbed soft clayey soil samples,which were collected from Wenzhou,Zhejiang Province,China,at average natural water content 72.5%.The consolidation behavior of the clay has no rigorous difference,whether it is consolidated under the vacuum,surcharge,or combined vacuum-surcharge preloading.The study shows that some physical properties of the soft clayey soils are changed and mechanical properties are improved to support excessive loads transferred to the soil foundation due to construction.