- 摘 要
-
(1 河南城建学院, 平顶山 467001; 2 南京高科减震技术有限公司, 南京 210000; 3 北京建工集团四建工程建设有限公司, 北京 100015)
[摘要]宁夏卫海财富大厦设计之初面临扭转严重、多遇地震下结构层间位移角超标等问题。采用同时安装屈曲支撑、普通支撑和黏滞阻尼器的组合应用消能减震方案,并进行反应谱计算和弹性及弹塑性时程计算。计算表明,多遇地震时通过发挥支撑的刚度调整功能和黏滞阻尼器的耗能功能,较好地解决了前述问题;罕遇地震时同时发挥屈曲支撑和黏滞阻尼器的耗能功能,较好地保护了主体结构,实现了设计目的。该方案及其设计实现过程,对框剪结构消能减震设计具有一定的借鉴意义。
[关键词]消能减震; 扭转; 附加阻尼比; 屈曲支撑; 黏滞阻尼器
中图分类号:TU318+.2文献标识码:A文章编号:1002-848X(2018)05-0093-06
Seismic energy dissipation design of Ningxia Weihai Fortune Tower
Zhou Haitao1, Hao Xiao1,2, Ba Panfeng3
(1 Henan University of Urban Construction, Pingdingshan 467001, China; 2 Nanjing GK Damping Technology Co., Ltd., Nanjing 21000, China; 3 The Forth Branch of Beijing Construction Engineering Group, Beijing 100015, China)
Abstract:Facing design difficulty such as severe torsion, excessive displacement angle, and so on, the designer of Ningxia Weihai Fortune Tower adopts composite shock absorption scheme which suggest configuring of common brace, buckling-restrained brace and viscous damper simultaneously. And response spectrum calculation, elastic and elasto-plastic time history calculation were carried out. According to the calculation results, the above problems are solved by fully playing the stiffness-adjusting capability of braces and energy dissipation capability of dampers under frequent earthquake. And through playing energy dissipation capability of buckling-restrained braces and dampers under rare earthquake, the main structure is protected properly as expected. The scheme and the design procedure is of certain reference value to the design of the frame-shear wall structure.
Keywords:seismic energy dissipation; torsion; additional damper ratio; buckling-restrained brace; viscous damper
作者简介:周海涛,博士,高级工程师,一级注册结构工程师,Email:12757012@qq.com。