多层简单框架结构振动台模型设计  

Model design of multilayer simple frame structure in shaking table test

作　　者：何志坚[1] 王社良[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《振动与冲击》2013年第15期100-105,共6页Journal of Vibration and Shock

基　　金：陕西省自然科学基础研究基金(2007E205);陕西省重点实验室项目(08JZ35)

摘　　要：考虑振动台的性能参数和振动台试验的可操作性,运用一致相似率,进行一基础滑移隔震五层钢筋混凝土框架结构和屋面附加层的模型设计。采用双层底盘设计,制作模型配筋面积等效,添置尽量多的人工质量。分别采用人工质量模型、忽略重力模型、欠人工质量模型三种方式计算。研究结果表明:配重块的设置是合理的,欠人工质量模型的设计是适当可行的,能降低模型的重力失真效应,把加速度放大系数控制到合理的范围之内,减小噪声影响和试验误差。Considering the performance parameters of the shaking table and the operability of the shaking table test,the general similitude law was applied to design the test model of a sliding base isolated five-story reinforced concrete frame structure and the roof of the additional layer.The model was designed as a double deck chassis.With equivalent reinforcement area and attached with as many as possible artificial lumped masses.Three kinds of simplifications were used in design calculation,namely,the model with artificial masses,the model neglecting gravity forces and the model with not enough artificial masses.The results show that: the weight set is reasonable and the model of not enough artificial masses is appropriate and feasible.It can reduce the gravitational distortion effect of the model and control the acceleration amplification factor within reasonable limit.It can also reduce the noise influence and experimental error.

关 键 词：隔震 模型设计 振动台试验 框架结构 欠人工质量模型 

分 类 号：TU352.1+2[建筑科学—结构工程]