摘要
通过模型算例对墙式连接位移型阻尼器在框架结构中的平面布置和立面布置原则展开讨论。分析表明阻尼器平面布置宜规则对称,尽量布置于结构周圈以控制不规则布置产生的附加扭转效应;阻尼器竖向布置可连续布置或交错布置,交错布置时阻尼器的工作效率略高于连续布置,在层间位移角较大的低区楼层布置时阻尼器的工作效率较高。根据墙式连接阻尼器的构造特点,定义阻尼器受荷变形与结构楼层总变形之比为阻尼器的有效工作系数。通过简化推导得到阻尼器有效工作系数计算公式,分析不同连接布置参数对阻尼器有效工作系数的影响,有效工作系数越大,阻尼器的工作状态越理想。研究表明:阻尼器连接结构设计时增大框架梁截面高度和混凝土基墙宽度对于提高位移型阻尼器的有效工作系数最有效。
The principle of plane and vertical arrangement of wall-mounted dampers in frame structures were discussed.Analysis showed that the plane arrangement of dampers should be regular and symmetrical.Dampers should be arranged in the perimeter of structure as much as possible to control the additional torsion effect.The vertical arrangement of dampers can be continuously or staggered.The dampers worked more efficiency when arranged on low-zone floors with larger story drift.According to the characteristics of wall-mounted damper,the ratio of the load deformation of the damper to the total deformation of the structural floor was defined as the effective working coefficient of the damper.The larger the effective working coefficient of the damper,the more ideal the hysteretic working state of the damper.The formula of the effective working coefficient of the damper was derived to study the influence of different damper connection construction parameters on the coefficient.Analysis showed that increasing the height of the frame beam and the width of the connected concrete wall was the most effective way to improve the effective working coefficient of the displacement-type damper.
作者
程卫红
巫振弘
陈灏恺
CHENG Weihong;WU Zhenhong;CHEN Haokai(CABR Technology Co.,Ltd.,Beijing 100013 China;China Academy of Building Research,Beijing 100013,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S01期935-939,共5页
Building Structure
基金
中国建筑科学研究院有限公司青年基金课题(20190122331030002)
关键词
墙式连接
位移型阻尼器
框架结构
布置原则
有效工作系数
连接布置参数
wall-mounted
displacement-type damper
frame structure
arrangement principle
effective working coefficient
damper connection construction parameters
