【摘要】 通过单轴拉伸试验,研究原状黄土的拉伸特性。结果表明:在单轴拉应力作用下原状黄土的应力应变曲线为应变硬化型,试样的破坏表现为脆性破坏。初始含水率对原状黄土抗拉强度的影响极其显著,抗拉强度与初始含水率呈幂函数关系;试样破坏时的极限拉应变随含水率的增大出现先减小后增大的现象,在含水率为18.2%时的极限拉应变最小,为0.029%。更多还原

【Abstract】 The tensile character of undisturbed loess is analysed by monaxial tension tests.The results show that: 1.the stress-strain curve can be described by the form of strain-induration,the form of loess break is of fragile;2.the original water content prominently affects on the tensile strength of loess,which can be described by power function;3.with the increase of the original water content,the definite tensile strain firstly decreases and then increases,the definite tensile strain is 0.029% when the water content is 18.2%.更多还原