模块化装配式钢框架抗震性能研究

针对国内外工业化装配式高层钢结构体系的研究不足,为多高层装配式钢框架结构体系的研发与设计提供依据,利用有限元软件ANSYS 14.0对取自装配式实际工程中的单榀两层单跨钢框架进行静力及拟静力分析;研究框架在低周反复荷载作用下的耗能能力及延性性能,分析框架的承载能力及破坏机理。研究表明:装配式钢框架具有良好的变形性能,地震作用下,桁架梁端部弦杆形成塑性铰以消耗能量,装配式钢框架滞回曲线饱满表现出较好的塑性变形能力及耗能性能。

STUDY ON SEISMIC PERFORMANCE OF MODULAR PREFABRICATED STEEL FRAME

In order to remedy the defects of researches high-level fabricated steel frame system at home and abroad,and provide the basis for the development and design of multi-story industrialized prefabricated steel frame structure system at the same time,the finite element software ANSYS 14. 0 was used to make the static analysis and pseudostatic analysis of prefabricated steel frame taken from the actual project which is single-bay,two-layer and single-span steel frame. The energy dissipation capacity and ductility performance of the frame under low frequency cyclic loading were studied,and the bearing capacity and failure mechanism of the frame were analyzed. Research shows:prefabricated steel frame has good deformation performance,under the earthquake action,at the truss beam end plastic hinge forms to consume energy,the hysteretic curve of prefabricated steel frame is full,showing good plastic deformation and energy dissipation ability.