输电塔主材角钢并联加固性能研究和参数化分析  

Research and Parametric Analysis on the Performance of Parallel Reinforcement of Angle Steel,the Main Material of Transmission Tower

作　　者：王亚玲 陈伏彬 翁兰溪 WANG Yaling;CHEN Fubin;WENG Lanxi(School of Civil Engineering,Changsha University of Science&Technology,Changsha 410114,China;Power China Fujian Electric Power Survey&Design Institute,Fuzhou 350000,China)

机构地区：[1]长沙理工大学土木工程学院,湖南长沙410114 [2]中国电建集团福建省电力勘测设计院有限公司,福建福州350000

出　　处：《湖南科技大学学报(自然科学版)》2025年第1期37-44,共8页Journal of Hunan University of Science And Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(52278479,51778072)。

摘　　要：为研究传统打孔式和新型夹具式这2种加固方式对输电塔主材角钢加固性能的影响以及优化主材角钢的加固方式,建立了2种加固方式的有限元模型,并通过静载试验和有限元模拟对比分析了2种加固方式下加固构件的破坏形态和极限承载力,实验结果与模拟结果吻合较好,验证了有限元模拟的准确性.然后在此基础上,重点分析了2种加固方式下填板(夹具)数量、位置,螺栓间距、个数等参数对加固性能的影响,结果表明:2种加固方式均能显著提高构件承载力,构件破坏形态主要为局部屈曲破坏;在实际工程中,对于单节间构件,建议采取加固件个数为2个或3个,布置在构件首尾两端,其单边螺栓个数为2个,间距在120~140 mm可以达到最优加固效果.该研究结果对单节间角钢加固分析和设计具有重要参考意义.In order to study the influence of the two strengthening methods of punching and clamping on the strengthening performance of the main material angle steel of the transmission tower and optimize the strengthening methods of the main material angle steel,the finite element models of the two strengthening methods are established.The failure forms and ultimate bearing capacity of the strengthened members under the two strengthening methods are compared and analyzed through static load tests and finite element simulation.The experimental results are in good agreement with the simulation results,which verified the accuracy of the finite element simulation.Then,on this basis,the influence of the number and location of filler plates(clamps),the spacing of bolts,the number of bolts and other parameters on the strengthening performance under the two strengthening methods are emphatically analyzed.The results show that both strengthening methods can significantly improve the bearing capacity of the members,and the failure mode of the members is mainly local buckling failure.In actual projects,for single section members,it is recommended to adopt two or three reinforcements,which are arranged at both ends of the member.The number of unilateral bolts is two,and the spacing between 120~140mm can achieve the optimal reinforcement effect.The research results have important reference significance for the analysis and design of single section angle steel reinforcement.

关 键 词：角钢 加固 承载力 有限元分析 参数化分析 

分 类 号：TU312.1[建筑科学—结构工程] TU391