过渡区对混凝土分体柱框架中节点应力应变的影响
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摘要
在利用分体柱技术解决短柱问题的基础上,通过对高轴压比和单调反向荷载作用下8个钢筋混凝土分体柱节点模型的数值模拟研究,分析了单调荷载作用下节点核心区的破坏机理,研究了节点上下分体形式和过渡区长度对节点核心区应力应变场的影响,以及裂缝的发展状态。在丰富混凝土框架节点设计理论的同时,也对分体柱框架节点工程实践提供参考。
Based on the use of a split column technology to solve the problem of short column,through the numerical simulation study on eight beam-column joints of reinforced concrete frame with split columns under high axial compression ratio and monotonous reverse loading,the failure mechanism of the joints core area under monotonic loading is analyzed here in detail.Furthermore,the influence of the split form of the columns up or below the joints and the length of the transition regions on the stress and strain fields in the joints core area is investigated,and the developing state of the cracks is also studied.All these as mentioned above could enrich the concrete frame joints’design theory,simultaneously they could also provide some references for the engineering practices of split column’s frame joints.
Based on the use of a split column technology to solve the problem of short column,through the numerical simulation study on eight beam-column joints of reinforced concrete frame with split columns under high axial compression ratio and monotonous reverse loading,the failure mechanism of the joints core area under monotonic loading is analyzed here in detail.Furthermore,the influence of the split form of the columns up or below the joints and the length of the transition regions on the stress and strain fields in the joints core area is investigated,and the developing state of the cracks is also studied.All these as mentioned above could enrich the concrete frame joints’design theory,simultaneously they could also provide some references for the engineering practices of split column’s frame joints.
引文
[1]贾金青,姜睿,徐世,等.超高强混凝土短柱抗震性能的试验研究[J].地震工程与工程振动,2006,26(6):120－126.
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[3]姜维山,白国良.配复合箍、螺旋箍、X形筋钢筋砼短柱的抗震性能及抗震设计[J].建筑结构学报,1994,15(1):2－16.
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[5]黄勇,陈伟刚,段莉.钢管混凝土短柱(剪力键)受剪性能试验研究[J].建筑结构学报,2001,32(12):178－185.
[6]周绪红,刘界鹏,张素梅.圆钢管约束钢筋混凝土短柱抗震性能试验研究[J].建筑结构学报,2010,31(7):56－63.
[7]李忠献,郝永昶,张建宇,等.钢筋混凝土分体柱框架梁柱中节点抗震性能的研究[J].建筑结构学报,2001,22(4):55－60.
[8]郝永昶,胡庆昌,徐云扉,等.应用分体柱改善短柱(高轴压比)抗震性能的试验研究[J].建筑结构学报,1998,19(6):2－11.
[9]江见鲸,陆新征,叶列平.混凝土结构有限元[M].北京:清华大学出版社,2005.
[10]李忠献,赵艳静,郝永昶,等.分体柱施工工艺的试验研究与设计建议[J].建筑结构,2004,34(4):15－17.
[11]中华人民共和国标准.GB50010-2010.混凝土结构设计规范[S].北京:中国建筑工业出版社,2011.
[12]江见鲸.钢筋混凝土结构非线性有限元分析[M].西安:陕西科学技术出版社,1994.
[13]罗如登.Ansys中混凝土单元Solid65的裂缝间剪力传递系数取值[J].江苏大学学报,2008,29(2):169－172.
[2]贾金青,姜睿,刘毅,等.纤维超高强混凝土框架短柱抗震性能的试验研究[J].铁道科学与工程学报,2006,3(5):50－54.
[3]姜维山,白国良.配复合箍、螺旋箍、X形筋钢筋砼短柱的抗震性能及抗震设计[J].建筑结构学报,1994,15(1):2－16.
[4]赵世春,陈家夔.劲性钢筋砼框架短柱受剪承载力计算[J].建筑结构学报,1994,15(3):66－74.
[5]黄勇,陈伟刚,段莉.钢管混凝土短柱(剪力键)受剪性能试验研究[J].建筑结构学报,2001,32(12):178－185.
[6]周绪红,刘界鹏,张素梅.圆钢管约束钢筋混凝土短柱抗震性能试验研究[J].建筑结构学报,2010,31(7):56－63.
[7]李忠献,郝永昶,张建宇,等.钢筋混凝土分体柱框架梁柱中节点抗震性能的研究[J].建筑结构学报,2001,22(4):55－60.
[8]郝永昶,胡庆昌,徐云扉,等.应用分体柱改善短柱(高轴压比)抗震性能的试验研究[J].建筑结构学报,1998,19(6):2－11.
[9]江见鲸,陆新征,叶列平.混凝土结构有限元[M].北京:清华大学出版社,2005.
[10]李忠献,赵艳静,郝永昶,等.分体柱施工工艺的试验研究与设计建议[J].建筑结构,2004,34(4):15－17.
[11]中华人民共和国标准.GB50010-2010.混凝土结构设计规范[S].北京:中国建筑工业出版社,2011.
[12]江见鲸.钢筋混凝土结构非线性有限元分析[M].西安:陕西科学技术出版社,1994.
[13]罗如登.Ansys中混凝土单元Solid65的裂缝间剪力传递系数取值[J].江苏大学学报,2008,29(2):169－172.
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