1000MW热电厂主厂房钢骨混凝土柱-剪力墙结构抗震性能研究

STUDY OF SEISMIC PERFORMANCE OF SRC COLUMN-SHEAR WALL HYBRID STRUCTURE SYSTEM OF MAIN POWERHOUSE IN LARGE-SCALE THERMAL POWER PLANT

受工艺的限制,火电厂主厂房结构布置复杂、空间整体性差。传统钢筋混凝土框排架主厂房的薄弱部位多,安全储备低,在高烈度区的运用受到限制。提出高烈度区大容量机组主厂房采用SRC柱-剪力墙混合结构,以提高结构的抗震性能,并降低工程造价。通过1 000 MW机组SRC柱-剪力墙主厂房模型结构抗震性能试验,研究了结构的变形特点、刚度退化规律、破坏模式和耗能能力等。研究结果表明,SRC柱-剪力墙主厂房混合结构承载能力高、抗震性能良好,剪力墙延缓了框排架子结构的开裂和破坏,能更好的运用于高烈度区大容量机组中。

Restricted by the thermal process layout , space layout of the main power house of a power plant is complex and with poor overall performance .A tradition of RC main powerhouse structure with more weaknesses and low safety stock, its using in high seismic intensity regions is restricted .In this paper, SRC frame-shear wall hybrid structure system was put forward , and a 1 000 MW main powerhouse is taken as a research object , seismic performance test was carried out to study the structural deformation capacity , stiffness degradation rule , failure mode and energy dissipation capacity .Research results show that SRC frame-shear wall hybrid structure has godd seismic and economic erformance;Which can be better used in large-scale thermal power plant in high seismic intensity region .