【摘要】 进行了3个不同构造EPS模块再生混凝土复合剪力墙试件低周反复荷载抗剪性能试验。试件1为200 mm厚普通再生混凝土剪力墙;试件2为320 mm厚EPS模块外保温再生混凝土剪力墙;试件3为320 mm厚EPS模块夹芯保温再生混凝土剪力墙。各试件剪跨比均为0.8。对比分析了各试件抗剪承载力、刚度及退化过程、延性、滞回性能、耗能能力及破坏特征。研究表明:EPS模块外保温再生混凝土复合墙体与普通再生混凝土剪力墙相比,承载力、刚度、耗能、延性均提高,损伤过程相对缓慢,表明EPS保温模块及其外侧防火保护层对墙体抗震性能有明显贡献;相同截面厚度EPS模块外保温再生混凝土复合墙体试件比EPS模块夹芯保温复合墙体试件承载力略高,但刚度、延性和耗能均略小,两种构造形式复合墙体抗震性能均良好。更多还原

【Abstract】 The experimental study on shear behavior of three specimens of( EPS) modules recycled concrete composite shear wall with different constructional measures are tested under low cyclic loading. Specimen one is ordinary recycled concrete shear wall,and the thickness of which is 200 mm. Specimen two is 320 mm thick composite wall with EPS modules external insulation layer. Specimen three is 320 mm thick composite wall with EPS modules sandwich insulation layer. The shear span ratio of the specimens is 0. 8. Shear bearing capacity,stiffness and its attenuation process,ductility,hysteretic behavior,energy dissipation and failure phenomena of the specimens are compared. Research shows that: compared with ordinary recycled concrete shear wall,the bearing capacity,stiffness,energy dissipation and ductility of composite wall with EPS modules external insulation are improved and its damage process is relatively slow. This explains that EPS modules and fire protection layer can contribute to composite wall on seismic performance obviously. Compared with EPS modules sandwich insulation composite wall,the bearing capacity of external insulation composite wall with same thickness EPS modules is slightly higher while its stiffness,ductility and energy dissipation are slightly lower. Both two composite shear walls with EPS modules have good seismic behavior.更多还原