登录
注册
E-alert
登录
注册
E-alert
ANALYSIS ON WORKING MECHANISM OF INTERLAYER SEISMIC ISOLATION MASONRY BUILDING WITH FRAME STRUCTURE IN THE FIRST STOREY
-
摘要: 层间隔震是在基础隔震发展过程中出现的一种新型减震技术。底框砌体结构在城市建设中应用广泛,这种房屋的特点是由两种承重和抗侧力体系构成的,但是这类房屋的抗震性能较差。通过把隔震橡胶垫放置在上部砌体与底层框架结构之间的隔震措施,依靠隔震层较大的变形和耗能能力,大大削弱了地震对建筑结构的影响。由于上部砌体的刚度比隔震垫与底层框架的刚度大得多,因此可以将隔震房屋模拟成具有两个自由度的系统。分析了此类房屋的动力特性,与隔震振型的参与系数相比,非隔震振型的参与系数是非常小的,隔震振型控制了系统的反应,得到了用来求解此类房屋动力计算的实用方法,探讨了组合阻尼比、刚度比及质量比的变化规律。为建立实用设计方法、推广层间隔震结构的应用提供了有效途径。Abstract: Based on the characteristics that the rigidity of the upper masonry structure is much bigger than the rigidity of laminated rubber bearings and frame structure.It can be referred to as system having a two degree of freedom.The dynamic behavior of this building is analyzed,the isolated vibration mode controls the response of system.The influence regulations among the composite damping ratio,the stiffness ratio and the mass ratio are investigated.A practical method for dynamical behavior analysis to masonry building with frame structure in the first storey with laminated rubber bearings between the first and second storey is presented,which submits efficient path to found applicable design means and to generalize interlayer seismic isolation structure.
-
周福霖. 工程结构减震控制[M].北京:地震出版社,1997. [2] 杨佑发,王立福. 在非比例阻尼情况下层间隔震底层框架砖房的组合阻尼比[J].工业建筑,2003,(12):47-49.doi: 10.3321/j.issn:1000-8993.2003.12.015. [3] 祁皑,林云腾,郑国琛. 层间隔震结构工作机理研究[J].地震工程与工程振动,2006,(04):239-243.doi: 10.3969/j.issn.1000-1301.2006.04.040. [4] 姜俊平,邵长荣. 振动计算与隔震设计[M].北京:中国建筑工业出版社,1976. [5] 杨佑发,邹银生. 底部两层框剪砌体房屋抗震性能研究[J].重庆大学学报,2000,(02):82-87.doi: 10.3969/j.issn.1000-582X.2000.02.020. [6] 杨佑发,邹银生. 底部框剪砌体房屋空间弹塑性地震反应分析[J].振动与冲击,2003,(01):20-23.doi: 10.3969/j.issn.1000-3835.2003.01.005. -
点击查看大图
计量
- 文章访问数: 44
- HTML全文浏览量: 4
- PDF下载量: 60
- 被引次数: 0
下载:
