针对工业厂房中框排架结构偏心、不规则的特点,以某火力发电厂主厂房为原型,建立整体结构的空间计算模型,分别进行模态分析和水平双向地震作用下的弹塑性时程分析,结合前期拟动力和伪静力试验研究,重点研究了该类结构的动力特性及整体的变形能力。研究结果表明:结构纵、横向刚度相差较大,扭转效应明显,且薄弱部位较多,在设计中应予以重视。 In view of the eccentricity and irregularity of the frame structure in the middle of a factory building, the space calculation model of the whole structure is established by taking the main workshop of a thermal power plant as the prototype. The elastic-plastic time history analysis under modal analysis and horizontal bidirectional earthquake is carried out respectively , Combined with the pre-quasi-dynamic and pseudo-static test research, focusing on the dynamic characteristics of such structures and the overall deformation capacity. The results show that the structural longitudinal and transverse stiffness are quite different, the twisting effect is obvious, and the weakened parts are more, which should be taken seriously in the design.