一、破坏形态及其控制钢筋混凝土框架柱的试验已有许多,我国约408根,其中175根是低周反复加载的;日本在1972年前做了450根,1972年后做了260根低周反复加载的。这些试验都表明,框架柱的破坏形态主要有剪切破坏、粘结破坏和弯曲破坏三种。其中弯曲破坏有大、小偏心受压破坏两种;剪切破坏有剪拉、斜拉和剪压破坏三种;粘结破坏有主筋屈服前和主筋屈服后破坏两种。不过,以上破坏形态 I. Destructive morphology and its control of reinforced concrete frame columns There have been many tests, about 408 in China, of which 175 are under low cyclic loading; Japan made 450 before 1972 and 260 after 1972 Zhou repeatedly loaded. These tests have shown that the failure modes of frame columns include shear failure, adhesion failure and bending failure. Among them, there are two types of bending failures: large and small eccentric compression failure; shear failures include shear, diagonal and shear failure; and bond failure includes two kinds of damage, ie, before and after the yield of the main reinforcement. However, the above destruction mode