摘要
本文通过室内模型试验,以刚体试块代替刚度较大的砌体建筑物,进行了振动台的模拟试验,探讨了三种工况下,砂垫层减振的减振率,研究了砂垫层相对密实度对减振率的影响,比较了在密实状态及松散状态下、较密实状态下两种不同厚度、不同基底压力下砂垫层的减振效果。结果表明,随着砂垫层密实度的增加,减振效果有所减小。输入ElCentro波时,砂垫层厚度增加,减振效果增强,但输入正弦波时,厚度对减振效果影响不大。
With rigid test block in place of low building with larger rigidity, the simulated test on shaking table for studying the vibration reduction effect of sand cushion and the effect of relative density of sand cushion on vibration reduction ratio were carried out. Damping effects of sand cushion with two different thicknesses and under different foundation pressure were compared with dense state, loose state and closely dense state. The result showed that the damping effect reduces when the compactness of sand cushion increases. While inputting the El Centro wave, the damping effect enhances as the thickness of sand cushion increases. But when inputting sine wave, thickness has little influence on the damping effect.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2005年第1期125-128,共4页
Journal of Building Structures
基金
河北省建设厅科技项目(2002-104)。
