±800 kV同塔双回输电线路十字组合角钢塔承载力真型试验

doi:10.11930/j.issn.1004-9649.2014.10.1.5

中国电力 ›› 2014, Vol. 47 ›› Issue (10): 1-6.DOI: 10.11930/j.issn.1004-9649.2014.10.1.5

• 电网—特高压直流输电专栏 • 下一篇

±800 kV同塔双回输电线路十字组合角钢塔承载力真型试验

韩军科^{1, 2}

1. 中国电力科学研究院,北京 100192;
2. 北京工业大学工程抗震与结构诊治北京市重点实验室,北京 100124

收稿日期:2014-06-15 出版日期:2014-10-18 发布日期:2015-12-10
作者简介:韩军科（1979—）,男,山东威海人,博士研究生,高级工程师,一级注册结构工程师,从事输电线路杆塔结构分析与控制研究。E-mail: hjk@epri.sgcc.com.cn
基金资助:
国家自然科学基金资助项目（51178014）; 国家电网公司科技资助项目（GY110025）

Full-Scale Test for Cruciform Angle Tower Applied in ±800 kV Double-Circuit Transmission Lines on the Same Tower

HAN Jun-ke^{1, 2}

1. China Electric Power Research Institute, Beijing 100192, China;
2. Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China

Received:2014-06-15 Online:2014-10-18 Published:2015-12-10
Supported by:
This work is jointly supported by National Natural Science Foundation of China (51178014) and Science and Technology of State Grid Corporation of China (GY110025)

摘要/Abstract

摘要： SJ30102十字组合角钢塔是我国第1基±800 kV直流特高压双回路真型试验塔,塔总高75.5 m,塔重176.8 t。SJ30102试验塔顺利通过了大风、安装、覆冰、断线等7个工况的荷载试验,45°大风超载工况下,加载至设计荷载的134%时,十字组合角钢受压失稳破坏。试验结果表明：主材轴力计算值与试验结果相吻合,计算模型合理;考虑填板布置形式的十字组合角钢稳定承载力计算值与稳定应力实测值吻合较好,计算方法合理准确,DL/T 5154—2012关于十字组合角钢稳定计算方法过于保守;一字型填板布置形式,能够减轻塔重约3%,填板及螺栓计算方法安全可靠;十字组合角钢主材与斜材的新型连接形式,能够提高2个分肢角钢的协同工作性能,受力均匀性较好。

关键词: ±, 800 kV, 同塔双回输电线路, 十字组合角钢塔, 真型试验, 连接方式, 受力不均匀性

Abstract: Cruciform angle tower SJ30102 is the first full-scale test tower for ±800 kV UHV DC double-circuit in China. The total height and weight of the tower are 75.5 m and 176.8 t respectively. The test tower SJ30102 successfully passed the load test with seven conditions including wind, installation, ice coating, broken conductors and etc. Under the condition that the overload reaches 134% of the designed limit in case of 45 degrees gale, the cruciform angle tower failed with compression. The test results show that the calculated axial forces of main materials matches well with the tested results, which shows that the calcualtion model is reasonable. The calculated stability bearing capacity of cruciform angle tower matches well with the measured stable stress with consideration of filler plate arrangement form, which shows that the calculating method is accurate and the stability bearing capacity calculation method of cruciform angle tower in DL/T 5154-2012 is over-conservative. The linear filler plate arrangement form can reduce the tower weighs by about 3% and the calculation method for filler plate and bolts is safe and reliable. The new connection form between the main and the diagonal materials of cruciform angle tower can improve the cooperative working performance of two limb angle steels with good stress evenness.

Key words: ±800 kV, double-circuit transmission lines on the same tower, cruciform angle tower, full-scale test, connection mode, stress unevenness

中图分类号:

TM753

韩军科. ±800 kV同塔双回输电线路十字组合角钢塔承载力真型试验[J]. 中国电力, 2014, 47(10): 1-6.

HAN Jun-ke. Full-Scale Test for Cruciform Angle Tower Applied in ±800 kV Double-Circuit Transmission Lines on the Same Tower[J]. Electric Power, 2014, 47(10): 1-6.

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±800 kV同塔双回输电线路十字组合角钢塔承载力真型试验

Full-Scale Test for Cruciform Angle Tower Applied in ±800 kV Double-Circuit Transmission Lines on the Same Tower

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±800 kV同塔双回输电线路十字组合角钢塔承载力真型试验

Full-Scale Test for Cruciform Angle Tower Applied in ±800 kV Double-Circuit Transmission Lines on the Same Tower

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