摘要
地震引起的相邻建筑物间的碰撞过去多次强烈地震中出现,并造成了较为严重的结构破坏。为研究此问题,设计建造了两座缩尺钢质模型来模拟香港两座相邻的21层建筑,对其进行了一系列振动台碰撞试验,试验结果表明复杂结构间的碰撞可能是周期性的、群周期性的或混沌的,这主要取决于间距、结构参数以及地震动参数。碰撞引起的能量传递可能对较柔较轻的邻近建筑造成较严重的地震反应和破坏。
Seismic poundings between adjacent structures have been frequently observed during past major earthquakes. In this study, two reduced-scale steel models are built and tested on a MTS shaking table to investigate the potential seismic poundings between two 21-story adjacent buildings in Hong Kong. It is found that poundings between the two models may be periodic, group periodic or chaotic, depending on separation distances, structural characteristics and ground shakings. Energy transferred through pounding may cause abnormal large responses and damages to the lighter and more flexible building, which when stands alone does not suffer any vibrational damages.
出处
《华南地震》
2008年第2期36-46,共11页
South China Journal of Seismology
基金
香港特别行政区RGC项目(Project No.PolyU5035/02E)
关键词
地震碰撞
振动台试验
扭转
能量传递
Seismic pounding, Shaking table test, Torsion, Energy transfer
