摘要
研究Kerr地基上的均质Euler-Bernoulli梁在移动集中荷载作用下的稳态响应,分析有无阻尼存在时列车速度、地基压缩刚度、剪切刚度对Kerr地基梁挠度曲线的影响。计算结果表明,地基阻尼的存在能明显减少移动荷载引起的地基梁挠度,地基梁的挠度受地基压缩刚度的影响比剪切刚度更为明显。
The steady-state response of an Euler-Bernoulli beam placed on a Kerr foundation and subjected to a concentrated load moving with a constant speed has been investigated. A steady- state response solution of the Kerr foundation beam was derived and the influence of train veloci- ty, compression stiffness, and shear stiffness of the foundation beam on the dynamic response were analyzed considering possible foundation damping. The results illustrated that foundation damping can significantly reduce deflection of a foundation beam, and compression stiffness has more effect on deflection than the shear stiffness.
出处
《地震工程学报》
CSCD
北大核心
2015年第B07期40-45,共6页
China Earthquake Engineering Journal
基金
国家973基础研究项目(2011CB013800)
国家自然科学基金项目(51278381)
上海市优秀学术带头人项目(12XD1405100)
关键词
移动荷载
Kerr地基
地基阻尼
挠度
moving load
Kerr foundation
foundation damping
deflection
