Axial Bearing Capacity of Angle Parallel Reinforcement for High Voltage Transmission Towers

YAO Yao; WANG Lingxu; ZHANG Youjia

doi:10.3969/j.issn.0258-2724.20190370

Volume 55 Issue 3

Jun. 2020

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Journal of Southwest Jiaotong University > 2020 > 55(3): 561-569.

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YAO Yao, WANG Lingxu, ZHANG Youjia. Axial Bearing Capacity of Angle Parallel Reinforcement for High Voltage Transmission Towers[J]. Journal of Southwest Jiaotong University, 2020, 55(3): 561-569. doi: 10.3969/j.issn.0258-2724.20190370

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Axial Bearing Capacity of Angle Parallel Reinforcement for High Voltage Transmission Towers

doi: 10.3969/j.issn.0258-2724.20190370

Received Date: 25 Apr 2019
Rev Recd Date: 07 Aug 2019

Available Online: 26 Nov 2019

Publish Date: 01 Jun 2020

Abstract

Abstract

The risk of transmission tower collapse can be effectively controlled by improving the bearing capacity of its local stability. Through the test of six-angle parallel reinforcement under axial compression, a single-angle axial compression test and the analysis of 13 finite element models, the load-displacement curves of the specimens, the load-strain curves and Mises stress nephogram are obtained. Further the laws of stress and strain of the specimens and how design parameters affect the component bearing capacity are explored. The results show that the local buckling instability is the main failure mode of the specimens. The maximum strength of the reinforced angle unit reaches 223.1 MPa, and the maximum strength of the board clamp element reaches 83.7 MPa. The overall strain of the specimen is mainly vertical strain, and that of the board clamp is mainly shear strain. The buckling formula of uniform plate theory can calculate the ultimate bearing capacity of the reinforced specimen. The parallel reinforcement can improve the bearing capacity of single angle by 40%.
- transmission tower,
- angle,
- reinforcement,
- axial compression test,
- numerical simulation,
- bearing capacity analysis

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张文亮,于永清,宿志以,等. 湖南电网2008年冰雪灾害调研分析[J]. 电网技术,2008,32(8): 1-5.

ZHANG Wenliang, YU Yongqing, SU Zhiyi, et al. Investigation and analysis of icing and snowing disaster happened in Hunan power grid in 2008[J]. Power System Technology, 2008, 32(8): 1-5.

李成榕,吕玉珍,崔翔,等. 冰雪灾害条件下我国电网安全运行面临的问题[J]. 电网技术,2008,32(4): 14-22.

LI Chengrong, LU Yuzhen, CUI Xiang, et al. Research issues for safe operation of power grid in China under ice-snow disasters[J]. Power System Technology, 2008, 32(4): 14-22.

刘学武,夏开全,高燕,等. 构件并联法加固输电塔的试验研究及设计建议[J]. 西安建筑科技大学学报(自然科学版),2011,43(6): 838-844. doi: 10.3969/j.issn.1006-7930.2011.06.012

LIU Xuewu, XIA Kaiquan, GAO Yan, et al. Study on strengthening the structure and its design for the transmission tower[J]. Journal of Xi’an University of Architecture & Technology (Natural Science Edition), 2011, 43(6): 838-844. doi: 10.3969/j.issn.1006-7930.2011.06.012

刘海锋,朱彬荣,孙珍茂,等. 大宽厚比对称填板双角钢十形组合构件轴压试验与设计方法对比[J]. 建筑结构学报,2018,39(7): 123-130.

LIU Haifeng, ZHU Binrong, SUN Zhenmao, et al. Experimental study on axial compressive strength and evaluation of design criteria for closely star-battened angle column with symmetrical battens of large width-to-thickness ratio[J]. Journal of Building Structures, 2018, 39(7): 123-130.

刘红军,李正良. 双角钢十字组合截面偏心压杆承载力研究[J]. 四川大学学报(工程科学版),2012,44(1): 63-68.

LIU Hongjun, LI Zhengliang. Study on ultimate strength of eccentric compression members with combined angle iron cross-section[J]. Journal of Sichuan University (Engineering Science Edition), 2012, 44(1): 63-68.

李正良,黄海斌,赵楠,等. 高强度双角钢十字组合截面双节间压杆受力性能研究[J]. 四川大学学报(工程科学版),2015,47(2): 64-74.

LI Zhengliang, HUANG Haibin, ZHAO Nan, et al. Study on mechanical performance of double internodes compression member of high-strength dual-angle cross combined section[J]. Journal of Sichuan University (Engineering Science Edition), 2015, 47(2): 64-74.

杨隆宇,李正良. 双角钢十字组合截面构件铰支轴心受压承载力研究[J]. 西南交通大学学报,2011,46(5): 752-757. doi: 10.3969/j.issn.0258-2724.2011.05.007

YANG Lougyu, LI Zheugliang. Bearing capacity of pinned-end built-up cruciform section members formed by two equal-leg angles under compression load[J]. Journal of Southwest Jiaotong University, 2011, 46(5): 752-757. doi: 10.3969/j.issn.0258-2724.2011.05.007

郭彦林,王小安,朱博莉,等. 四角钢组合约束型防屈曲支撑的轴压试验研究[J]. 土木工程学报,2017,50(4): 1-12,115.

GUO Yanlin, WANG Xiaoan, ZHU Boli, et al. Experimental study on a four-angle assembled buckling-restrained brace subjected to axial compressive load[J]. China Civil Engineering Journal, 2017, 50(4): 1-12,115.

KOMATSU H, ISIHII K, FUKUSHIMA A. Experimental study on buckling strength of angle steel compression members with built-up bracing[J]. Japanese Society of Steel Construction, 2009, 16: 27-34.

中华人民共和国住房和城乡建设部. 钢结构加固技术规范: CECS77—96[S]. 北京: 中国计划出版社, 1996.

中华人民共和国住房和城乡建设部. 钢结构设计规范标准: GB 50017—2017[S]. 北京: 中国建筑工业出版社, 2017.

陈骥. 钢结构稳定理论与设计[M]. 北京: 科学出版社, 2003.

张有佳,李小军. 基于钢板弹性屈曲理论的组合墙轴压试验研究[J]. 应用基础与工程科学学报,2015,23(6): 1198-1209.

ZHANG Youjia, LI Xiaojun. Axial compression experimental study of composite walls based on steel plate elastic bucking theory[J]. Journal of Basic Science and Engineering, 2015, 23(6): 1198-1209.

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