摘要
本文利用随机振动荷载作用下黄土模量,阻尼比的试验结果。对不同随机荷载和等幅循环荷载作用下黄土动应力—应变关系,剪切模量、阻尼比进行了对比试验研究。并得出了不同随机振动荷载作用下,原状黄土的动应力—应变关系及服从双曲线型,剪切模量随剪应变的增加而降低,阻尼比随剪应变的增加而增大。
In this papep, based on the tested results of modulus and damping ratio of loess under random seismic loading, the relationships of dynamic stress and strain, shear modulus and damping ratios under different random loadings and equiamplitude cyclic loading were studied by comparisons.The research results showed that the relationships of dynamic stress and strain of intact loess under different random seismic loadings obey a hyperbolic model.Shear moduli decrease with the increase of shear serain. The damping ratios rise with the increase of shear strain.
出处
《甘肃科学学报》
1992年第4期74-79,共6页
Journal of Gansu Sciences
关键词
黄土
模量
阻尼比
兰州市
随机荷载
Lanzhou loess, randem seismic load and equiamplitude load, modulus, damping ratio, changing trend, hyperbolic model.
