【摘要】 近年来,我国在众多城市的中心地区建设了很多高层和超高层建筑。这些建筑物出于建筑外观考虑,大量采用玻璃幕墙等围护结构。一旦因地震导致围护结构破坏脱落,可能会造成严重的次生灾害。结构层间位移角过大是导致建筑物围护结构破坏的主要原因。因此,该文认为当层间位移角超过破坏临界层间位移角1/300时,会有玻璃幕墙围护结构破坏,并以一定的初速度飞出。基于高层建筑弹塑性时程分析的结果,计算得出围护结构脱落可能导致的伤害范围,并建议其安全避难距离,其成果可供地震逃生及避难研究参考。更多还原

【Abstract】 Many high-rise and super high-rise buildings have been constructed in the city centers of China.Due to the architecture requirement,glass curtain is widely used in high-rise buildings.If the glass curtain falls down from the high-rise building due to earthquake,serious secondary disaster may occur.The glass curtain damage is mainly induced by the large storey drift angle of a structure.In this paper,the glass curtain damage is considered when the storey drift angle exceeds the critical deformation,which is followed by the falling down of the fragments with a certain velocity.Based on the elasto-plastic time-history analysis results of a high-rise building,the injure range of glass curtain falling is predicted and the evacuation distance is suggested,which provides a reference for the earthquake evacuation research.更多还原