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。
Based on the different vibration frequencies , 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 clay＇s damping ratio.
出处
《建筑技术开发》
2007年第4期24-25,38,共3页
Building Technology Development
关键词
动力特性
振动频率
阻尼比
动剪模量
Dynamic property Vibration frequency Damping ratio Dynamic shear modulus
