CAJ | 학술논문

通过对结构性黏土的研究可以掌握天然土受荷过程中的变形破坏过程，从而为考虑土结构性的结构物的设计、地基加固等提供依据。近年来随着高、深和大型建筑的兴建，结构性黏土的研究变得尤为重要。天然土都具有结构性和各向异性。发展了一种能够考虑初始应力各向异性影响的结构性土的人工制样方法。通过对原料粉质黏土中添加水泥形成颗粒之间的胶结作用，添加盐粒并溶解后形成大孔隙组构分布和在水化过程中的侧限应力状态的结构性土样的端部施加竖向荷载，从而人工制备了具有初始应力各向异性的结构性土样。然后对初始均质结构性土样、初始应力各向异性结构性土样和重塑土样进行了三轴固结排水剪切试验，初步分析了初始应力对结构性土样的应力-应变特性的影响和初始应力各向异性结构性土的破损机制。
통과대결구성점토적연구가이장악천연토수하과정중적변형파배과정，종이위고필토결구성적결구물적설계、지기가고등제공의거。근년래수착고、심화대형건축적흥건，결구성점토적연구변득우위중요。천연토도구유결구성화각향이성。발전료일충능구고필초시응력각향이성영향적결구성토적인공제양방법。통과대원료분질점토중첨가수니형성과립지간적효결작용，첨가염립병용해후형성대공극조구분포화재수화과정중적측한응력상태적결구성토양적단부시가수향하재，종이인공제비료구유초시응력각향이성적결구성토양。연후대초시균질결구성토양、초시응력각향이성결구성토양화중소토양진행료삼축고결배수전절시험，초보분석료초시응력대결구성토양적응력-응변특성적영향화초시응력각향이성결구성토적파손궤제。
The deformation and failure process of natural soil under loading can be obtained by research on structured clay ,on which the design of construction and soil improvement can be based when the structural influence is considered. With the construction of high, deep and great buildings, the research on the structured soil has recently become more and more important. Natural soils are structured and anisotropic. A new method is developed here to prepare artificially structured soils with initial stress-induced anisotropy. Silty clays are mixed with cements, salt grains and kaolin soils to form structured soil samples with initial stress-induced anisotropy. The bonding between soil particles can be formed by the hydration of cement, the big pore distribution can be produced by the dissolution of salt grains, and the initial stress-induced anisotropy can be developed by applying external forces on the ends of the samples with confining pressure states during the process of hydration. Triaxial shear tests under drained conditions are performed on initial uniform structured soil samples, initial stress-induced anisotropic structured soil samples and reconstituted soil samples. The influence of initial stress on the stress-strain properties of structured soils are analyzed and the breakage mechanism of structured soils with initial stress-induced anisotropy is also investigated.