【摘要】 通过在不同的振动频率1 Hz、4 Hz、8 Hz、10 Hz情况下,研究了粘性土的应力应变曲线、动模量曲线和阻尼比曲线与振动频率的关系,讨论了振动频率对粘性土的动力特性的影响。结果表明:在这四种频率作用下,粘性土的动本构关系均服从双曲线模型;振动频率在应变较小时对土的动模量影响较小、在应变较大时影响较大;振动频率对于粘性土的阻尼比则具有较大的影响。更多还原

【Abstract】 Based on the different vibration frequencies (1Hz、4Hz、8 Hz、10Hz), the relationship between vibration frequency and clay’s stress - strain curve, dynamic shear modulus curve and damping ratio curve have been studied, and the influence of vibration frequency on clay’s dynamic property has been discussed. The result shows that: under the influence of the above four frequencies, clay’s dynamic constitutive relationship all conform to double curve model; vibration frequency has greater influence on dynamic shear modulus of the soil when the strain is strong, and less one when the strain is weak; but it has a great influence on clays damping ratio.更多还原