钢筋钢纤维混凝土剪力墙受剪及抗震性能试验研究-结构工程专业论文.docxVIP

ABSTRACT Shear wall is one ofthe main elements resisting lateral loads ofthe high-rise buildings， but mechanical properties ofshear wall ale requested hi曲and higll、】lritlI heightening ofhigh building strnutum．Questions on the seismic behavior of shear wall slructure have been beP．．nme more and more outstanding．Steel fiber concrete behaves excellent strength properties and mechanical characteristics，compensates the deficiencies of plain concrete， improves mechanical and in-service performance of plain concrete．Based On the basic theory of steel fiber concretc．、丽m the cyclic loading,the experimental research is carried out on the shear and seismic behavior of squat steel fiber reinforced concrete shear wall，in p硎clllar，5 models ofsame concrete strength but different volume fraction ofsteel fiber and 2 models of蜀al／le volume fraction of steel fiber but different concrete strength．The paper emphatically analyzes capacity,stiffness，ductility,hysteretic capacity,energy dissipation。 failure phenomena and cracking resistance of shear wall affected by the volume fraction of steel fiber and concrete strength．Maximum crack width and crack developing conditi∞of shear wall models are compared．Furthermore，based on theoretical analysis of experiment and the current code，the formula of shear bearing capacity of steel fiber reinforced concrete shear wall is established． The following is main research results： (1)Based on the theoretical analysis and the cyclic loading experimental of 6 steel fiber reinforced concrete shear wall and l reinforced concrete shear wall，the paper analyzes shear bearing capacity of shear wall affected by the volume ft-action of steel fiber and concrete strength，establishes the calculation model and formula of shear bearing capacity of steel fiber reinforced concrete shear wall． (2)1rI蟛influence ruleofstiffness,ductility,energydissipationofsteelfiberreinforced concrete shear wall，which are affected by the volume fraction of steel fiber and concrete strengt