【摘要】 通过在不同的振动频率情况下,试验场地土的应力-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4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,the relationship between vibration frequency and clay stress-strain curve,dynamic shear modulus curve and damping ratio curve have been studied,and the influence of vibration frequency on clay dynamic property has been discussed.The result shows that:under the influence of the above four frequencies,clay 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 clay damping ratio.更多还原