钢筋混凝土框架节点抗震设计尺寸控制的探讨
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摘要
结合多维拟静力空间框架节点试验和非线性有限元分析研究成果,对不同节点破坏形式和传力机理进行分析,探讨了《建筑抗震设计规范》、《混凝土结构设计规范》等规范中关于框架梁柱节点核心区截面尺寸的规定。分析结果表明:梁高也是影响核心区受剪承载能力的因素,规范在截面尺寸限制公式中应引入梁高的影响,在混凝土框架结构设计中应加以强调,以保证强节点的抗震设计准则。
Comparing with the research results of multiple loading quasi-static test and non-linear finite element analysis on RC concrete and pre-stressed concrete spatial frame joints,an investigation of failure mode and mechanical properties on different joints was presented.The paper discussed the rule of design codes on aseismic design of reinforced concrete frame joint section size.The analytical result indicates that the height of beam also affects the performance of core shear capacity.This influence of controlling section size about the core joint should be considered in the code,and should be emphasized to designers,so as to comply with the standard of seismic design action on strong joints.
Comparing with the research results of multiple loading quasi-static test and non-linear finite element analysis on RC concrete and pre-stressed concrete spatial frame joints,an investigation of failure mode and mechanical properties on different joints was presented.The paper discussed the rule of design codes on aseismic design of reinforced concrete frame joint section size.The analytical result indicates that the height of beam also affects the performance of core shear capacity.This influence of controlling section size about the core joint should be considered in the code,and should be emphasized to designers,so as to comply with the standard of seismic design action on strong joints.
引文
[1]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1989.9~22.
[2]傅剑平、陈小英、白绍良.中低剪压比框架节点抗震机理的试验研究[J].重庆建筑大学报,2005,27(1):41~47.
[3]Sadjadi,R.,M.R.Kianoush,S.Talebi.Seismic Performance of Reinforced Concrete Moment Resisting Frames[J].Engi-neering Structures,2007,29:2365~2380.
[4]GB 50010-2002,混凝土结构设计规范[S].
[5]GB 50011-2001,建筑抗震设计规范[S].
[6]JGJ-2002,高层建筑混凝土结构技术规程[S].
[7]李旭红、房贞政.预应力混凝土空间框架节点二维拟静力试验研究[J].地震工程与工程震动,2009,29(1):70~77.
[8]GB 11-2008,建筑抗震设计规范局部修订[S].
[2]傅剑平、陈小英、白绍良.中低剪压比框架节点抗震机理的试验研究[J].重庆建筑大学报,2005,27(1):41~47.
[3]Sadjadi,R.,M.R.Kianoush,S.Talebi.Seismic Performance of Reinforced Concrete Moment Resisting Frames[J].Engi-neering Structures,2007,29:2365~2380.
[4]GB 50010-2002,混凝土结构设计规范[S].
[5]GB 50011-2001,建筑抗震设计规范[S].
[6]JGJ-2002,高层建筑混凝土结构技术规程[S].
[7]李旭红、房贞政.预应力混凝土空间框架节点二维拟静力试验研究[J].地震工程与工程震动,2009,29(1):70~77.
[8]GB 11-2008,建筑抗震设计规范局部修订[S].
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