CAJ | 학술논문

为揭示钢支撑对RC框架结构的影响规律,在4、8、12层RC框架结构上后加V型、对角型、X型及大型四种钢支撑,通过ETABS建立结构模型并进行多遇地震作用下的分析.结果表明,钢支撑改变了原结构的变形特性,使结构的刚度、楼层剪力及边柱轴力增大,中柱轴力降低.此外,钢支撑作为主要的抗侧力构件,承担了大部分地震作用,改变了原结构的传力路径,使梁端弯矩降低、梁轴力增大,与支撑相连的基础反力也相应增大.
위게시강지탱대RC광가결구적영향규률,재4、8、12층RC광가결구상후가V형、대각형、X형급대형사충강지탱,통과ETABS건립결구모형병진행다우지진작용하적분석.결과표명,강지탱개변료원결구적변형특성,사결구적강도、루층전력급변주축력증대,중주축력강저.차외,강지탱작위주요적항측력구건,승담료대부분지진작용,개변료원결구적전력로경,사량단만구강저、량축력증대,여지탱상련적기출반력야상응증대.
For the purpose of revealing the effect rule of steel brace on RC frames,four shapes of steel brace,i.e. V-shape,diagonal-shape,X-shape and large one,are applied in RC frames on the 4F,8F and 12F respectively to build structural model and conduct effect analysis under frequently occurred earthquake circumstance through ETABS. The results show that the steel brace changes the deformation characteristics of the original structure,increas-es its rigidity,storey shear force and shaft force of the side pillar and decreases shaft force of the center pillar. Furthermore, as a major lateral resisting element,the steel brace changes the force-transferring path of the original structure,lowers the bending moment of beam end and increases beam's shaft force,thus foundation reaction connecting with brace increases accordingly.