三峡大学学报（自然科学版）2024，Vol.46Issue(1)：85-91,7.DOI:10.13393/j.cnki.issn.1672-948X.2024.01.013
考虑螺栓滑移效应的角钢输电塔抗震性能研究
Study on the Seismic Performance of Angle Steel Transmission Towers Considering the Bolt Slippage Effect
摘要
Abstract
To investigate the impact of bolt slippage on the seismic performance of angle steel transmission towers,this study utilized non-linear springs in ABAQUS finite element software to simulate the stiffness behavior of angle steel transmission tower joints.A finite element model was established for angle steel transmission towers,considering the effects of bolt slippage.Based on the numerical model,dynamic characteristics,seismic response,failure collapse,and seismic susceptibility of angle steel transmission towers were analyzed.The results indicate that,after considering the bolt slippage effect,the vibration pattern of the tower remains unchanged,but the self-oscillation frequency of each order is reduced to varying degrees.This suggests that the overall stiffness of the angle steel transmission tower is overestimated in the traditional design method.Moreover,the main member axial force response,tower displacement response,and seismic susceptibility of angle steel transmission towers under seismic action increase,and the failure mechanism and form of collapse also vary.Considering the impact of bolt slippage in seismic design can aid in accurately predicting the failure location of angle steel transmission towers,which is of great significance in ensuring the reliability and safety of transmission lines in earthquake-prone areas.关键词
螺栓滑移效应/动力特性/地震响应/倒塌形式/易损性Key words
bolt slippage effect/dynamic characteristics/seismic response/collapse forms/susceptibil-ity分类
建筑与水利引用本文复制引用
王中强,李勋宇..考虑螺栓滑移效应的角钢输电塔抗震性能研究[J].三峡大学学报（自然科学版）,2024,46(1):85-91,7.基金项目
国家自然科学基金项目(51778072) （51778072）
湖南省教育厅重点项目(18A218) （18A218）
土木工程创新项目(长沙理工大学)(13ZDXK08) （长沙理工大学）
