基于代理模型的输电塔半刚性节点弯矩-转角曲线预测方法  

A surrogate model-based prediction method of moment-rotation curve of semi-rigid joints in transmission towers

作　　者：刘泉 李正良[2] 彭思思 王涛[2,3] LIU Quan;LI Zhengiang;PENG Sisi;WANG Tao(State Grid Economic and Technological Research Institute Co.,Ltd.,Beijing 102209,P.R.China;School of Civil Engineering,Chongqing University,Chongqing 400045,P.R.China;School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,P.R.China)

机构地区：[1]国网经济技术研究院有限公司,北京102209 [2]重庆大学土木工程学院,重庆400045 [3]哈尔滨工业大学交通科学与工程学院,哈尔滨150090

出　　处：《重庆大学学报》2024年第4期86-93,共8页Journal of Chongqing University

基　　金：国家自然科学基金国际(地区)合作与交流项目(51611140123);国家重点研发计划项目(2017YFC0703901,2018YFC0809406);重庆市博士后研究项目特别资助(2022CQBSHBT3009)。

摘　　要：为了准确、高效地评估输电塔半刚性节点的力学特性,提出了一种基于代理模型的输电塔半刚性节点弯矩-转角曲线预测方法,通过引入代理模型方法近似半刚性节点几何尺寸与极限抗弯承载力、初始转动刚度之间的函数关系,建立具有较高精度的预测模型,进而结合Kish-Chen幂函数模型拟合输电塔半刚性节点的弯矩-转角曲线。结果表明,提出的基于代理模型的输电塔半刚性节点弯矩-转角曲线预测方法能减少实验和数值模拟的成本,较好地模拟输电塔半刚性节点实际受力-变形情况,为输电塔半刚性节点的工程设计和理论研究提供了参考。In order to accurately and efficiently evaluate the mechanical properties of semi-rigid joints in transmission towers,a method based on surrogate model is proposed to predict the moment-rotation relationship of the semi-rigid joints.By introducing the surrogate model method to approximate the functional relationship between the geometric dimensions,ultimate flexural capacity,and initial rotational stiffness of semi-rigid joints,a prediction model with high accuracy is established.Furthermore,the moment-rotation curves of semi-rigid joints in transmission towers are fitted using the Kish-Chen power function model.The results show that the proposed surrogate model-based prediction method for moment-rotation curves of semi-rigid joints can reduce the cost of experiments and numerical simulations,while accruately approximating the actual force-deformation relationship of semi-rigid joints in transmission towers.This method also provides valuable insights for the engineering design and theoretical research of semi-rigid joints in transmission towers.

关 键 词：代理模型 输电塔 半刚性节点 弯矩-转角曲线 

分 类 号：TM754[电气工程—电力系统及自动化]