蜂窝状钢骨混凝土T形柱-钢梁连接节点性能分析
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摘要
为了探讨蜂窝状钢骨混凝土T形柱-钢梁节点的受力与变形特性,进行典型强、弱2组节点的单调加载试验和非线性分析,考察轴压比、配箍率、混凝土强度等主要参数对节点承载力的影响。结果表明:强、弱节点的破坏模式分别为梁铰失效模式和剪切失效模式;强节点的承载力主要由钢梁尺寸和钢材强度决定,弱节点的承载力主要由配箍率、混凝土强度、节点区型钢腹板强度和高厚比决定。
To investigate the stress and deformation characteristics of joints for T-shaped honeycombed steel reinforced concrete columns and steel beams,monotonous loading experiments and finite element analysis on two groups of typical joints were conducted.The effects of the parameters,such as axial compression ratio,hooped stirrup ratio,concrete strength and so on,on the joint carrying load were investigated.Results showed that the failure mode of strong-joint was beam failure,and that of weak-joint was shear failure.The carrying load of the strong joint is mainly dependent on the size of steel beam and steel strength.However,the carrying load of week joint was very much dependent on hooped stirrup ratio,concrete strength,the strength,and the height-thickness ratio of the steel-web.
To investigate the stress and deformation characteristics of joints for T-shaped honeycombed steel reinforced concrete columns and steel beams,monotonous loading experiments and finite element analysis on two groups of typical joints were conducted.The effects of the parameters,such as axial compression ratio,hooped stirrup ratio,concrete strength and so on,on the joint carrying load were investigated.Results showed that the failure mode of strong-joint was beam failure,and that of weak-joint was shear failure.The carrying load of the strong joint is mainly dependent on the size of steel beam and steel strength.However,the carrying load of week joint was very much dependent on hooped stirrup ratio,concrete strength,the strength,and the height-thickness ratio of the steel-web.
引文
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[3]宋怀金.桁架式钢骨混凝土异形柱-不等肢L形截面正截面承载力研究[D].广西:广西大学,2005.
[4]郑廷银,吴杏花,苏明,等.蜂窝状钢骨混凝土T形截面异形柱的正截面受力性能分析[J].南京工业大学学报:自然科学版,2010,32(1):12-18.
[5]郑廷银,林沂祥,毛志伟,等.蜂窝状钢骨混凝土不对称十字形柱正截面承载力试验[J].南京工业大学学报:自然科学版,2008,30(6):101-105.
[6]林沂祥,郑廷银,蔡万军,等.蜂窝状钢骨混凝土不对称十字形柱的非线性有限元分析[J].四川建筑科学研究,2009,35(2):21-24.
[7]郑廷银,吴杏花,陈志军.蜂窝状钢骨混凝土L形截面异形柱的正截面承载力研究[C]∥第五届海峡两岸及香港钢结构技术交流会论文集.台北:台湾大学,2008:176-190.
[8]郑廷银,沈宁,陈志军,等.蜂窝状钢骨混凝土L形柱抗震性能的试验研究[J].地震工程与工程振动,2009,29(4):113-118.
[9]沈宁.蜂窝状钢骨混凝土T形柱-钢梁节点静力性能研究[D].南京:南京工业大学,2009.
[10]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005.
[11]陈瑞生,周晓悦,恽波.钢骨混凝土柱非线性有限元分析[J].浙江建筑,2003(6):6-8.
[12]赵鸿铁,乔玉,薛建阳.型钢混凝土框架节点非线性有限元分析[J].西安建筑科技大学学报,1997,29(4):376-380.
[13]中华人民共和国建设部.GB50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[14]陈骥.钢结构稳定理论与应用[M].北京:科学技术出版社,2006.
[15]程文瀼.混凝土结构[M].北京:中国建筑工业出版社,2005.
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