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针对目前结构性黄土抗拉强度方面的研究成果较少,必须采用合理的试验方法对其进行测定与分析的问题,.通过对比目前应用于粘性土抗拉强度测试装置的优缺点,研制了一种可适用于饱和—非饱和结构性黄土抗拉强度测试的试验装置,并进行了调试运行,在此基础上对不同初始含水量的原状及重塑土进行抗拉强度的测试.研究结果表明:无论是结构性原状土还是重塑土,其抗拉强度随着含水量的增大而呈减小趋势;在相同含水量的情况下,在饱和状态二者的差异却并不大,同时,在相同含水量的情况下,原状土的抗拉强度要大于重塑土的抗拉强度.此外,对于结构性土而言,当含水量较低时,抗拉强度的值要达到300 k Pa,这是一个不可以忽略的量值..
In view of the fact that there are few research results on the tensile strength of structural loess at present, it is necessary to use reasonable test methods to measure and analyze the problems. By comparing the advantages and disadvantages of the tensile strength testing devices currently used in clay, The test device applicable to the tensile strength test of saturated-unsaturated structural loess is carried out and the commissioning operation is carried out, on the basis of which the tensile strength of undisturbed and remolded soils with different initial water content is tested.The results show that : Whether structural undisturbed soil or remolded soil, its tensile strength decreases with the increase of water content; in the same water content, the difference between the two is not large at the same time, , The tensile strength of undisturbed soil is greater than the tensile strength of remodeled soil at the same water content.In addition, for structural soil, when the moisture content is low, the value of tensile strength should reach 300 k Pa, this is a value that can not be ignored.