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问:进行建筑物抗震验算时,在什么情况下需要考虑竖向地震荷载的作用?答:国内外的震害经验表明,竖向地震作用仅在大地震的震中附近影响才比较显著,而8度及9度地区一般都靠近震中,所以我国抗震规范规定,在设计烈度为8度及9度时,才需对某些结构或构筑物验算竖向地震荷载的作用.至于震中区为7度时,由于震级不是很大,就不需考虑竖向地震荷载的作用.
Q: When considering the earthquake resistance of buildings, under what circumstances should we consider the role of vertical seismic load? A: The experience of earthquake damage at home and abroad shows that the effect of vertical earthquake is only significant near the epicenter of a large earthquake, and 8 Degrees and 9 degree areas are generally close to the epicenter, so China’s seismic codes require that the effect of vertical seismic loads be examined for certain structures or structures when the design intensity is 8 degrees and 9 degrees. For the epicentral area is 7 degrees. Since the magnitude is not very large, it is not necessary to consider the effect of vertical seismic load.