东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (11): 1633-1639.DOI: 10.12068/j.issn.1005-3026.2020.11.018

• 资源与土木工程 • 上一篇    下一篇

输电塔螺栓节点滞回特性数值模拟研究

李嘉祥, 王彪, 孙健, 王述红   

  1. (东北大学 资源与土木工程学院, 辽宁 沈阳110819)
  • 收稿日期:2020-03-25 修回日期:2020-03-25 出版日期:2020-11-15 发布日期:2020-11-16
  • 通讯作者: 李嘉祥
  • 作者简介:李嘉祥(1985-),男,辽宁葫芦岛人,东北大学讲师,博士; 王述红(1969-),男,江苏泰州人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51808100); 辽宁省自然科学基金资助项目(2019-ZD_0004); 辽宁省科学技术计划重大项目(2019JH2-10100035).

Numerical Simulation Study on Hysteresis Characteristics of Transmission Tower Bolt Joints

LI Jia-xiang, WANG Biao, SUN Jian, WANG Shu-hong   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2020-03-25 Revised:2020-03-25 Online:2020-11-15 Published:2020-11-16
  • Contact: WANG Biao
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摘要: 输电塔在振动过程中,螺栓节点会发生往复运动,但目前尚缺乏针对螺栓节点动力特性的研究.因此,对螺栓滑移进行了数值模拟,分析了其在循环荷载作用下的滞回性能,并通过参数分析研究了初始间隙、螺栓扭矩、接触面粗糙度对典型螺栓节点滞回性能的影响,为模拟螺栓滑移的动力响应提供了一种可供参考的滞回模型.结果表明,初始间隙越小、摩擦系数越大、初始扭矩越大,滞回曲线的极限变形越小,其中初始间隙对滑移变形的影响最大.

关键词: 螺栓滑移, 输电塔, 循环荷载, 动力特性, 数值模拟

Abstract: During the vibration of the transmission tower, the bolt joints will move back and forth, but there is still a lack of research on the dynamic characteristics of the bolt joints. The numerical simulation of joint bolt slip is carried out to analyze its hysteresis performance under cyclic loading. The effects of initial clearance, bolt torque, and contact surface roughness on the hysteresis performance of typical bolt joints are studied through parameter analysis, which provides a reference hysteretic model for simulating the dynamic response of bolt slip. The results show that the smaller the initial clearance, the larger the coefficient of the friction, the greater the initial torque, and the smaller the limit deformation of the hysteresis curve, in which the initial gap has the greatest effect on the slip deformation.

Key words: bolt slip, transmission tower, cyclic load, dynamic characteristics, numerieal simulation

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