RC框架HPFRC耗能墙结构侧向刚度计算模型

Lateral Stiffness Calculation Model of RC Frame HPFRC Energy Dissipation Wall Structure

摘要:

研究了钢筋混凝土(RC)框架高性能纤维增强混凝土(HPFRC)耗能墙结构中RC框架和HPFRC耗能墙的刚度退化规律,建立了RC框架HPFRC耗能墙结构在开裂、屈服和峰值荷载点的侧向刚度计算模型.结果表明：RC框架与HPFRC耗能墙在同一特征荷载点的刚度退化规律差异较大,HPFRC耗能墙比RC框架的刚度退化缓慢很多;基于RC框架与HPFRC耗能墙的刚度退化规律所建立的有效侧向刚度计算模型,基本反映了RC框架HPFRC耗能墙结构的受力和变形特点,按此模型计算所得的结构位移值与试验值基本吻合.

Abstract:

The stiffness degradation rules of reinforced concrete(RC) frame and high performance fiber reinforced concrete(HPFRC) energy dissipation wall in RC frame HPFRC energy dissipation wall structure were studied. The lateral stiffness calculation model of RC frame HPFRC energy dissipation wall structure at cracking, yield and peak load points were established. The results show that the stiffness degradation rules of RC frame and HPFRC energy dissipation wall are quite different even at the same characteristic load point, and the stiffness degradation of HPFRC energy dissipation wall is much slower than that of RC frame; the lateral stiffness calculation model based on the stiffness degradation rules of HPFRC energy dissipation wall and RC frame basically reflects the mechanical properties and deformation characteristics of the structure, the calculated values of the lateral displacement of the structure based on the model are basically consistent with the test values.