大型火电厂钢结构主厂房框排架结构抗震性能试验研究

为了解钢框排架结构的抗震性能，以位于抗震设防烈度8度区的某大型火电厂钢结构主厂房框排架结构为原型，按1∶10缩尺比例设计制作试验模型，并对其进行拟动力试验，研究该结构在地震作用下的加速度反应、位移反应、滞回特性、刚度和耗能性能。研究结果表明：钢框排架结构延性相对较好，具有较强的塑性变形能力。模型结构底层和第二层层间位移角较大，是模型结构的薄弱层。模型结构在三种地震波（El Centro波、Taft波、兰州人工波）的多遇地震以及El Centro波的罕遇地震作用下，层间位移角均满足我国现行规范要求。钢框排架结构体系可满足8度设防要求，具有良好抗震性能。

Experimental study on seismic behavior of steel frame-bent structures of large thermal power plant main buildings

In order to study the seismic behavior of steel frame-bent structures,the pseudo-dynamic test was carried out on a 1∶ 10 model of the steel frame-bent structure selected from a large thermal power plant main building built in the zone with a seismic design intensity of 8 degree.The seismic responses such as acceleration,displacement,hysteretic property,stiffness and energy dissipation were analyzed.The results show that the steel frame-bent structure has good ductility and good plastic deformation capacity.The inter-story drift is relatively large on the bottom story and the second story,namely the weak stories.The maximum inter-story drift of the model structure under intensity of 8 degree frequent and rare earthquakes are all less than their limit values regulated by the present seismic code.The steel frame-bent structure can satisfy the demand of seismic design in intensity of 8 degree zones and has good seismic behavior.