【摘要】 以结构的最大层间位移为控制目标,利用直接时域逐步积分法,研究了外套钢框架加层结构在常遇及罕遇地震作用下的结构响应规律,探讨了摩擦耗能装置对加层结构的抗震、减震效果.结果表明:设置摩擦耗能装置较好地控制了外套加层结构在地震作用下的位移响应和加速度响应,尤其大幅减小了结构框架柱的剪力值,为框架柱的优化设计提供了较大空间.更多还原

【Abstract】 To control the inter-storey displacement,this paper does systematic researches on response characteristics of storey-adding structure spanning existing building with steel frame under minor and major earthquake by using direct step-by-step integration method and investigates anti-seismic effect of storey-adding structures by means of friction energy-dissipation devices.The results indicate that the friction energy-dissipation devices effectively control displacement response and acceleration response,and the shear forces in frame column are significantly decreased,which makes optimal structural design possible.更多还原