摘要
以数值积分法为动力计算方法,在耦联计算主附结构体系动力反应的基础上,分析了二次结构质量、刚度、阻尼比及其所处楼层对其动力反应的影响。研究表明,二次结构与主体结构非共振时,其质量增加、所处楼层增高使其动力反应增大。二次结构与主体结构共振时,其动力反应明显增大;其质量增加使其最大相对位移减小,最大绝对加速度增大,其所处楼层增高使其动力反应增大。此外,二次结构阻尼的变化对其动力反应几乎无影响。
Taking numerical integral as dynamic calculation method, and based on coupling calculation of primary and secondary structures, the influence of the secondary structure ＇ s mass, stiffness, damping ratio and occurring floor on the structural dynamic response was analyzed. Results show that when the secondary structure is not in reso- nance with primary structure, its dynamic response increases with increase of its mass and floor; when the secondary structure is in resonance with primary structure, its dynamic response increases obviously, its maximum relative dis- placement decreases and maximum absolute acceleration increases with increase of its mass, its dynamic response increases with rise of the floor. Furthermore, damping change of the secondary structure almose has no influence on its dynamic response.
出处
《世界地震工程》
CSCD
北大核心
2014年第1期114-118,共5页
World Earthquake Engineering
基金
国家自然科学基金(50978240)
关键词
主附结构体系
动力反应
耦联分析
primary and secondary structure system
dynamical response
coupled amalysis
