【摘要】 针对工业厂房中框排架结构偏心、不规则的特点,本文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,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,由于结构特殊的使用要求,可通过调整构件尺寸和位置来减小结构的扭转效应。更多还原

【Abstract】 Because of the eccentricity and irregularity of the frame-bent structure in the industrial workshop,based on the prototype of thermal power plants principal workshop,the spatial computational model of integral structure was established.Model analysis and elastoplastic time history analysis under two-directional horizontal earthquake were made.The dynamic properties and the spatial deformation performance were studied on emphasis.The result shows that the stiffness of longitudinal direction and the transverse direction is abrupt,which makes the torsional effect evidently,and the weak parts are more.Because of the special productive demand,torsional effect is reduced by adjusting the dimension and position of structural members.更多还原