摘要
在较大频响范围内,通过实测加速度传递函数和ANSYS有限元分析,对一个1∶10的土-桩基-结构振动台试验模型在动力过程中的模态变化规律进行了考察。分析了软基SSI体系中软基对上部结构动力特性的影响,指出了在土、结构相对动刚度比足够小时,软基SSI体系动力特性——一阶模态化发展趋向。
In a wide frequency domain, vibration mode of a soil-pile-structure system on vibration table is investigated by experiment and FEM analysis. Then the influence of soft soil on the dynamic characteristics of upper structure is discussed. The dynamic characteristic of one order, which is corresponding to soft soil, is also pointed out when relative dynamic stiffness ratio of soil to upper structure is small enough.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第9期1502-1508,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金(59823002)重点资助项目。
