摘要
在地震作用下，像计算机、重要仪器和文物等浮放物可能发生滑动、摇晃或倾覆而造成损失。将这类浮放物简化为刚性块体，并把放置这些物体的基础（地面、楼板或台面）视为刚性平面。研究了块体在静止基础上的自由摇晃和在运动基础上的强迫摇晃两种运动的特性。用弹簧将块体锚接在基础上，作为防倾覆措施。计算表明，用很小弹性系数的弹簧，就可起到好的防护作用。
It has been well known that free standing objects,eg.computers,could be damaged because of their sliding,rocking and toppling during a seismic event.The free standing object is modeled as a rigid body,and the base on which the object standing is regarded to be rigid.The properties of the free rocking on quiescent base and forced rocking on the motive base are studied.To protect the objects during earthquake,springs are used to anchor the object with the base.The numerical simulations show that the protection role of the springs is efficient even though the springs are very soft.
出处
《振动工程学报》
EI
CSCD
1997年第4期501-505,共5页
Journal of Vibration Engineering
关键词
地震响应分析
摇晃
倾覆
振动控制
浮放物
seismic response analysis
rigid body
rocking
overturning
vibration control
