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针对我国高烈度区大容量机组火力发电厂钢筋混凝土框排架主厂房“先天不足”以及钢结构主厂房造价高的现状,现提出采用型钢混凝土(SRC)框架柱—钢筋混凝土(RC)分散剪力墙混合结构体系作为主厂房框排架新型结构体系。根据该结构体系特点,选取三榀三跨结构进行1∶7比例空间模型抗震性能拟动力和拟静力试验,研究该新型结构体系在水平地震作用下的受力特点,刚度退化规律、结构滞回性能、变形性能和薄弱部位等。研究结果表明,该新型框排架结构体系能够满足“小震不坏、大震不倒”的设防要求,结构的位移-荷载滞回曲线较饱满,结构的耗能能力和变形性能较强,薄弱部位发生在汽轮发电机运转平台层处,实际设计中应加强注意。该混合结构体系能够满足8度地区大容量机组主厂房结构的抗震要求,是一种值得大力推广应用的新型结构体系。
In view of the present situation of the main factory building of reinforced concrete frame-framed coal-fired power plant and the high cost of main steel plant in China’s high-capacity thermal power plant, the SRC frame-reinforced concrete (RC) Shear wall hybrid structural system as the main plant frame rack a new structural system. According to the characteristics of the structural system, the quasi-dynamic and quasi-static tests of seismic performance of 1: 7 scale space model with three ridges and three span structures are selected to study the mechanical characteristics, stiffness degradation and stiffness of the new structural system under horizontal seismic action Back performance, deformation performance and weak parts. The results show that the new frame-framing system can meet the requirements of “small earthquake is not bad, large earthquake does not fall”, the displacement of the structure - full load hysteresis curve, the structure of the energy performance and deformation performance than Strong and weak parts occur in the turbogenerator platform layer, the actual design should pay more attention. The hybrid structure system can meet the seismic requirements of the main plant structure of a large capacity unit in 8 degree area and is a new type of structure system worthy of great promotion and application.