摘要
为研究摩擦摆基础滑移隔震框架结构的隔震情况,以摩擦摆系统的理论为基础,选取多层钢筋混凝土框架结构为研究对象,采用有限元软件SAP 2000进行模型建立、工况定义、模型分析和数据提取。比较基础固定结构和基础滑移隔震结构在地震作用下的反应特性,如自振周期、楼层最大加速度反应、层间位移、层间剪力,分析其减震效果。研究结果表明:合理设置隔震层的参数,公式计算结果与程序分析结果吻合较好,摩擦摆隔震系统具有明显的减震效果,大大降低地震作用下的结构的峰值反应包括自振周期、加速度反应、层间位移和层间剪力,某些减震率甚至超过90%。
To understand the isolation performance of isolation frame structure based on the friction pendulum foundation sliding, a multi-story reinforced concrete frame structure with a base of friction pendulum system was selected as an object for theoretical study. The finite element software SAP2000 was used for establishing the model, defining the operating conditions, model analysis and data extraction. To analyze the damping effect, response of the isolated structures to earthquake was analyzed and compared with that of fixed base structures, including the natural period, the floor’s maximum acceleration response, relative displacement among floors and interlayer shear forces. Analysis results indicate that with a reasonable parameters set of the isolation layer, results of formula computation and program analysis agree well with each other. The friction pendulum system (FPS) has obviously damping effect. It can greatly decrease the maximum response of the structure when earthquake occurs. Some of the damping rate can even exceed 90%.
出处
《噪声与振动控制》
CSCD
2013年第1期212-217,共6页
Noise and Vibration Control
关键词
振动与波
SAP2000
摩擦摆
基础滑移隔震
时程分析
隔震效果
vibration and wave
SAP 2000
friction pendulum
base sliding isolation
time history analysis
isolation effect
