绪言有几座按过去的条件和规范设计的钢筋混凝土建筑物,在日本最近发生的强地震中遭到严重破坏。为了减轻建筑物这种严重的破坏,有必要对那些在强震下不能确保安全的钢筋混凝土建筑物,从强度和刚度方面进行加固。这样,我们研究了现有建筑物从强度和刚度方面进行加固的方法。 There are several reinforced concrete buildings designed according to past conditions and specifications that were severely damaged during the recent strong earthquake in Japan. In order to mitigate such severe damage to buildings, it is necessary to reinforce the strength and rigidity of reinforced concrete buildings that cannot ensure safety under strong earthquakes. In this way, we studied the method of strengthening existing buildings from the aspects of strength and stiffness.