通过阶形柱的伪静力试验,发现按当量地震力的抗震设计方法,单层厂房阶形柱上柱的安全储备即使设计得大于下柱的,其最后的破坏程度仍比下柱的严重。从实际的震例分析中,也证实了这个现象。为了达到等强度的设计,提出按现行设计方法设计时,需适当加强上柱的安全储备及其延性。同时还对上述现象的原因作了探讨,这对于弄清震害机理,正确理解与分析震害现象,有积极的意义。 Through the pseudo-static test of stepped columns, it was found that the seismic design method of equivalent seismic force, even if the safety reserve of the column on the single-storey factory is larger than the lower column, the final damage degree is still more serious than that of the lower column. . This phenomenon has also been confirmed in actual seismic analysis. In order to achieve the design of equal strength, it is suggested that the safety reserve and the ductility of the column must be properly strengthened when designing according to the current design method. At the same time, the reasons for the above phenomena have also been discussed. This is of positive significance for clarifying the mechanism of earthquake damage and correctly understanding and analyzing the phenomena of earthquake damage.