异形柱和短肢剪力墙的轴压比限值比较分析
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摘要
通过对异形柱轴压比限值影响因素的分析,根据大小偏心受压界限破坏机理,分别讨论了异形柱轴压比随截面尺寸、纵筋配筋率变化的规律,建议T形、L形柱腹板纵筋取为翼缘纵筋的0.7～1倍之间,并给出了此条件下的异形柱轴压比限值;依据异形柱轴压比限值的研究结论,参照高规对短肢剪力墙轴压比限值的规定,对比分析了异形柱和短肢剪力墙的轴压比限值,得出了异形柱和短肢剪力墙的轴压比限值可取一致的结论.
Through an analysis on the influence of the axial compression ratio limit of the special-shaped columns,the paper studied the influence of the sectional dimension and reinforcement ratio on the regulaty of special-shaped columns,and proposed the reinforcement ratio of the flange and the web as 0.7～1.The axial compression ratio limit on this condision was given. Acording to the conclusion and the provision of the technical specification for concrete structures of tall building about the axial compression ratio limit of the short-shear wall,their axial compression ratio limits has been compared.The conclusion is that the axial compression ratio limits of the short-shear wall could be consistent with that of the special-shaped columns.
Through an analysis on the influence of the axial compression ratio limit of the special-shaped columns,the paper studied the influence of the sectional dimension and reinforcement ratio on the regulaty of special-shaped columns,and proposed the reinforcement ratio of the flange and the web as 0.7～1.The axial compression ratio limit on this condision was given. Acording to the conclusion and the provision of the technical specification for concrete structures of tall building about the axial compression ratio limit of the short-shear wall,their axial compression ratio limits has been compared.The conclusion is that the axial compression ratio limits of the short-shear wall could be consistent with that of the special-shaped columns.
引文
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[2]郭棣,吴敏哲,田炜.T形截面钢筋混凝土柱偏心受压分析[J].西安建筑科技大学学报:自然科学版,2001,33(2):138-143.GUO Di,WU Min-zhe,TIAN Wei.The analysis of T shaped column in eccentric compression[J].J.Xi′an Univ.of Arch.&Tech.(Natural Seience Edition),2001,33(2):138-143.
[3]周建中,陆春阳,苏益声,等.钢筋混凝土不等肢L形异形柱承载力的理论研究[J].西安建筑科技大学学报:自然科学版,2001,33(2):116-120.ZHOU Jian-zhong,LU Chun-yang,SU Yi-sheng,et al.Theoretical research on strength of arbitrarily L-shaped R.C.columns[J].J.Xi′an Univ.of Arch.&Tech.(Natural Seience Edition),2001,33(2):116-120.
[4]李晓莉,郭棣,吴敏哲.T形截面柱的非线性分析[J].世界地震工程,2005,21(3):122-125.LI Xiao-li,GUO Di,WU Min-zhe.The nonlinear analysis of T-shaped columns[J].World Earthquake Engineer-ing,2005,21(3):122-125.
[5]程文鑲,李爱群,张晓峰,等.钢筋混凝土柱的轴压比限值[J].建筑结构学报,1994,15(6):25-30.CHENG Wen-xiang,LI Ai-qun,ZHANG Xiao-feng,et al.The axial compression ratio limit of the RC columns[J].Journal of Building Structures,1994,15(6):25-30.
[6]JGJ3-2002,高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.JGJ3-2002,Technical specification for concrete structures of tall building[S].Beijing:China Building Industry Press,2002.
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