考虑人行激励影响的钢筋混凝土框架教学楼动力性能研究

Research on Dynamic Performance of Reinforced Concrete Frame Teaching Building Considering the Influences of Pedestrian Incentive Load

对钢筋混凝土框架教学楼结构进行人行激励实测试验.考虑楼梯对主结构的作用,建立不考虑填充墙影响和考虑填充墙影响的两种有限元模型,通过计算自振周期与实测自振周期进行对比,修正两种有限元模型.通过不同的活载取值分别考虑静止人群荷载、空载和人行激励荷载3种工况,采用IDA分析方法进行动力计算,对比分析上述两种模型在3种工况下的地震动力响应,研究填充墙对结构有限元模型动力性能的影响.计算结果表明,对于考虑人行激励影响的钢筋混凝土框架教学楼结构进行IDA分析时需要考虑填充墙的影响;结构在空载工况下最为有利,静止人群荷载工况次之,人行激励荷载工况下最为不利.

This paper performed a measurement experiment of pedestrian incentive for a reinforced con- crete frame teaching building. Two finite element models were established, where one considers the influence of infilled wall and other without considering that influence,while the effect of stairs is included. Two finite element models were fixed by comparing the calculated natural vibration period with the meas- ured natural vibration period.Three working conditions, static load, no load and pedestrian incentive load, were considered by choosing different live load.An IDA calculation analysis was conducted in order to study the seismic dynamic response of the two models under three different working conditions as well as the in- fluence of the infilled wall on finite element model for structure dynamic performance. The results show that the infilled wall should be considered in the IDA analysis for the reinforced concrete frame teaching building considering the influence of pedestrian incentive load,the structural performance is the best when no load is applied and the static load takes the second place, and the worst is for the structure under pedes- trian incentive load condition.