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工程科学与技术:2013,45(4):46-54
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角钢塔K形节点弯矩-转角曲线研究
(1.重庆大学 土木工程学院;2.中国煤炭科工集团 重庆设计研究院)
Development of Moment-rotation Curves of Angle Steel Tower K-joints
(1.College of Civil Eng.,Chongqing Univ.;2.Chongqing Design & Research Inst.,China Coal Technol. & Eng. Group)
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投稿时间:2013-03-25    修订日期:2013-04-28
中文摘要: 为研究特高压角钢输电塔K形节点的弯矩-转角关系,进行了5个足尺的节点试验。试验结果表明:此类节点通常因连接主角钢和节点板的螺栓被剪断而达到极限弯矩。参数分析表明:在其他条件相同的情况下,螺栓个数对节点的极限弯矩和初始转动刚度影响很大;此类节点的形状系数的分布范围为1.97~2.10,绝大部分集中在2附近。并拟合出以上各参数的计算公式。对比表明,Kishi-Chen幂函数模型能够较准确地反映此类节点的弯矩-转角关系。
Abstract:In order to investigate the moment-rotation relation of the UHV angle steel tower K-joints, five full-scale tests were conducted. The results showed that the joints of this kind will reach their ultimate moment because of the shear break of bolts that connect the main angle and joint plate. Parameter analysis showed that the bolt number has great influence on ultimate moment and initial rotational stiffness when the other conditions are the same and the range of shape coefficient is 1.97 to 2.10 with the most concentrated in the vicinity of 2. Fitting formula of each parameter was given. Comparison showed that the Kishi-Chen three-parameter power model can predict the moment-rotation relation accurately.
文章编号:201300241     中图分类号:    文献标志码:
基金项目:国家自然科学基金资助项目(51078367)
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引用文本:
李正良,赵楠,尤军,刘红军.角钢塔K形节点弯矩-转角曲线研究[J].工程科学与技术,2013,45(4):46-54.
Li Zhengliang,Zhao Nan,You Jun,Liu Hongjun.Development of Moment-rotation Curves of Angle Steel Tower K-joints[J].Advanced Engineering Sciences,2013,45(4):46-54.