不同密度、不同加载方式、循环加卸载下做了实验，进行了详细地分析与总结。
Som experiments, diversity loading ways and diversity density and cycle loading, are done in this paper.
在此基础上，设计并完成具有明显层理状结构的泥质板岩的三轴循环加卸载试验。
On this basis, triaxial cyclic loading and unloading tests of argillite with obviously bedded structures are designed and completed.
在MTS压机上进行了砂岩、花岗岩等不同岩石样品的多种循环加卸载实验，得到一系列应力—应变曲线。
On the MTS pressure machine, a set of hysteresis graphs of stress-strain under uniaxial cycling loadings for different rock samples such as sandstone and granite were obtained.
通过塑性混凝土在单调和循环加卸载下的试验，对不同加卸载作用下塑性混凝土的强度和变形性能进行研究。
Strength and deformation were studied on plastic concrete in different loading ways through direct and cyclic loading and unloading testing.
对加卸载循环的应力-应变曲线，建立了能作理论拟合计算的材料宏观本构理论模型和关系方程。
Proposed a macroscopic constitutive model and relative equations which can be used to simulate theoretically measured stress-strain curves of loading -and unloading cycle.
对不同的岩石样品在MTS伺服压力机上进行了一系列的循环加、卸载实验，得到了不同岩石的应力-应变的滞回曲线。
From experiments of a series of load-unload cycles for rock samples by MTS pressure machine, the hysteretic stress-strain curves of different rock samples are acquired.
整个加卸载试验过程中，五种混凝土在各次循环中的残余应变随钢纤维含量的增加而降低。
The residual strains of five kinds of steel fiber concrete in each loading and unloading cycle are decreased as the steel fiber content are increased in the whole test process.
通过丰浦砂的平面应变循环加载试验，分析砂土在加–卸载条件下相应的黏性特征。
Based on a series of plane strain cyclic tests on air-dried Toyoura sand, the viscous properties of sand under loading-unloading conditions are presented.
在循环加、卸载孔隙水压力作用下，残余应变与循环次数的关系符合乘幂负指数关系。
The relationship between the residual strain and cyclic Numbers accords with the power of negative index under the cyclic loading and unloading pore water pressures.
在循环加、卸载孔隙水压力作用下，残余应变与循环次数的关系符合乘幂负指数关系。
The relationship between the residual strain and cyclic Numbers accords with the power of negative index under the cyclic loading and unloading pore water pressures.
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