抗震设防：我们的建筑物有备无患吗？杨朝岭目前，我国正处在本世纪的第五个地震活跃期。大地震给人们带来的灾害，首先就是房倒屋塌，造成人员伤亡和社会经济财富的巨大损失。人们还记忆犹新的是，１９７６年的唐山大地震，倾刻间（几十秒内）一座上百万人口的城市就变成... Seismic Fortification: Are our buildings prepared? Yang Chaoling At present, my country is in the fifth period of seismic activity in this century. The disaster caused to the people by the great earthquake was, first of all, the collapse of the house and the loss of human lives and social and economic wealth. What is still fresh in people’s memory is that in the Tangshan earthquake in 1976, a city with millions of people in the middle of a tumultuous time (in tens of seconds) became...