【摘要】 带刚性伸臂减震层高层结构的抗震性能较好,但其相关研究却比较少。本文通过推导黏滞阻尼器的单周简谐振动耗能能力公式,得到黏滞阻尼器在高层建筑中合适的参数设置范围。假定总阻尼系数和单个阻尼器的其他参数不变,比较设置1~4道刚性伸臂减震层时结构的性能差异,可知多道减震层结构单个指标虽不是最好,但综合性能更好。假定单个阻尼器其他参数不变时,通过变化结构总阻尼系数,得知带刚性伸臂减震层高层结构附设阻尼器存在最优总阻尼系数(即最优附加阻尼比),通过对相应内力和位移规律的总结,得到结构合理总阻尼系数的选取规则。由此可知,附加阻尼比大小而非减震层数量才是决定此类减震结构抗震性能的关键。更多还原

【Abstract】 High-rise building with damping rigid outrigger storeys has good seismic performance and has been used in engineering. However,there are few reports about the research of this structure. In this paper,the energy dissipation formula of one cycle of simple harmonic vibration for viscous damper has been derived. Based on it,the parameters of the selection method of viscous damper in the high-rise building is presented. Assuming that the total damping coefficients and other parameters of single damper are unchanged,the seismic performance of high-rise buildings with different damping layers are compared. The results indicate that the total performance of the buildings with multiple damping layers is better. Assuming that other parameters of single damper are unchanged,the rules of internal forces and displacements in the high-rise building with damping rigid outrigger storeys changing with its total damping coefficients are set up. Based on it,the selection criteria of total optimal damping coefficients are the key of the structure.更多还原