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火电厂主厂房因承载的设备种类繁多,运行参数复杂,使其质量、刚度在空间和平面上分布不均匀,导致结构体系的抗震性能较差。以8度区II类场地,单机容量1000MW机组的主厂房为研究对象,提出SRC柱-RC分散剪力墙框排架混合结构,对荷重较大的三榀子结构按1/7缩尺设计制作的模型结构,进行抗震性能试验研究,得到不同加速度峰值地震波作用下结构的荷载和位移反应,SRC柱、RC分散剪力墙的协同受力及多道抗震防线的形成规律等,并对结构在8度地震作用下的动力弹塑性分析进行对比,其结果表明该结构体系满足8度小震不坏、大震不倒的抗震设防要求,具有良好的变形性能,SRC柱与RC分散剪力墙有较好的协同工作性能,设置的RC剪力墙完美起到了第一道抗震防线作用,说明SRC柱-RC分散剪力墙框排架混合结构主厂房宜于在高烈度区大容量机组主厂房中推广应用。
Due to the variety of equipment and the complicated operating parameters of the main power plant, the quality and stiffness of the main power plant are unevenly distributed in space and in plane, resulting in poor seismic performance of the structural system. Taking the 8th class II site and the main workshop of 1000MW unit capacity as the research object, the mixed structure of SRC column-RC dispersive shear wall frame and frame was proposed. For the three load structure with larger load, the 1/7 scale design The model structure was made and the seismic performance test was carried out. The load and displacement response of the structure under different acceleration peak seismic waves, the synergistic stress of SRC columns and RC shear walls, The results of comparison of dynamic elasto-plastic analysis under 8-degree earthquake shows that the structural system meets the seismic fortification requirements of 8 degree of small earthquakes and large earthquakes and good deformation performance. SRC columns and RC distributed shear The wall has better coordination performance, and the RC shear wall set perfectly plays the first role of seismic defense, indicating that the main plant of SRC column-RC dispersive shear wall frame and frame mixed structure is suitable for large capacity unit in high intensity area The main plant in the promotion and application.