摘要
当遭遇地震作用时,高层建筑顶部动力反应较大。为了研究顶层建筑物内设备的安全性以及人的舒适度,采用整体结构试验和传统子结构试验受到振动台台面尺寸、承载能力、最大加速度等方面的限制。本文介绍了一种橡胶-质量系统子结构振动台试验方法来再现高层建筑遭遇地震作用时顶部结构的反应。为了使子结构能更精确地再现整体结构地震作用,采用传递函数产生一条新的输入加速度时程曲线。通过在SAP2000有限元软件中建立20层整体结构和2层子结构模型进行地震反应分析,验证了橡胶-质量系统子结构振动台试验方法的有效性和适用性。
When subjected to earthquake, high-rise buildings＇ upper floors undergo large responses. In order to research the equipment safety and human comfort, whole structures and traditional substructures are limited by shaking table size, mass limits, maximum acceleration and so on. In this paper, a method is presented for substructure shaking table test with rubber and mass system to reproduction the upper floor response of high-rise buildings when subjected to earthquake. Transfer function method is employed to generate the input wave to achieve an accurate reproduction between structure and substructure. The models of 20-story structure and 2- story substructure are established by using the SAP2000 finite element software, and the seismic responses are analyzed. The effectiveness and applicability of the substructure shaking table test method are demonstrated.
出处
《工程抗震与加固改造》
北大核心
2013年第5期132-135,139,共5页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金面上项目(51278322)
教育部博士点基金(20092302110049)
关键词
振动台
子结构
橡胶-质量系统
传递函数
地震反应
shaking table
substructure
rubber - mass system
transfer function
seismic response
