（中国电力科学研究院， 北京 100192）

［摘要］以输电铁塔十字组合双角钢构件为研究对象，对美国《输电铁塔设计导则》（ASCE 10）、英国《铁塔设计规范》（BS 8100）、欧洲《45kV以上交流架空输电线路设计规范》（EN 50431）中关于十字组合双角钢轴心受压构件稳定承载力计算方法进行了介绍，并与我国《架空送电线路杆塔结构设计技术规定》（DL/T 5154）及《钢结构设计规范》（GB 50017）进行对比分析。结果表明：对于十字组合双角钢构件稳定性，GB 50017和ASCE 10同时考虑扭转屈曲和弯曲屈曲，DL/T 5154，EN 50431，BS 8100仅考虑弯曲屈曲；对于十字组合双角钢构件弯曲长细比，DL/T 5154按实腹式构件计算两个轴的弯曲长细比，BS 8100和EN 50431对于虚轴采用换算长细比进行计算；对于输电铁塔十字组合双角钢构件的轴压稳定抗力，BS 8100和EN 50431计算结果接近，且大于DL/T 5154计算结果，ASCE 10计算结果大于GB 50017。

［关键词］输电铁塔; 十字组合双角钢; 轴压稳定抗力; 设计规范

中图分类号：TU202      文献标识码：A      文章编号：1002-848X(2014)06-0055-05

Comparison of stability on the cruciform double angle section members of transmission towers in design codes

Han Junke, Qiu Shuqing

（China Electric Power Research Institute, Beijing 100192, China）

Abstract: Taking the stability on the cruciform double angle section members of transmission towers as the research object, the stability capacity calculation of axial compressive members on transmission towers specified in Design of latticed steel transmission structures(ASCE 10), Lattice towers and masters (BS 8100) and Overheard electrical lines exceeding AC 45kV(EN 50431) was presented and made a comparison with Technical regulation of design for tower and pole structures of overhead transmission line (DL/T 5154) and Code for design of steel structures(GB 50017). The results show that: it needs to calculate the flexural buckling and torsional buckling modes of cruciform double angle section members in GB 50017 and ASCE 10, but it only needs to calculate the flexural buckling mode in DL/T 5154，EN 50431 and BS 8100; the slenderness ratio of flexural buckling is calculated against buckling transversely to the material axis as a single compression member in DL/T 5154, but the equivalent slenderness ratio is calculated against buckling transversely to the nonmaterial principal axis in BS 8100 and EN 50431; for the axial stability resistance on cruciform double angle section members of transmission towers, the results of BS 8100 and EN 50431 are very close, and they are greater than that of DL/T 5154, the result of ASCE 10 is greater than that of GB 50017.

Keywords: transmission tower; cruciform double angle section member; axial stability resistance; design code

*国家自然科学基金项目（51178014），国家电网公司科技项目（GY110025）。

作者简介：韩军科，博士研究生，高级工程师，一级注册结构工程师，Email：hjk@epri.sgcc.com.cn。

参考文献

［1］韩军科, 杨靖波, 杨风利,等. 超/特高压同塔多回输电线路脱冰跳跃动力响应分析［J］. 电网技术, 2012, 36(9): 61-67.

［2］韩军科, 杨靖波, 李清华,等. 超/特高压交流同塔多回输电线路覆冰不平衡张力分析［J］. 电网技术, 2011, 35(12): 33-37.

［3］韩军科, 杨靖波, 杨风利,等. 特高压钢管塔主材长细比及径厚比的取值［J］. 电网技术, 2009, 33(19): 17-20. 

［4］张邀宇, 田国平, 默增禄,等. 1000kV特高压双回输电线路钢管塔横担结构布置形式［J］. 电力建设, 2012, 33(11): 79-81.

［5］施菁华, 秦庆芝, 帅群,等. Q460特高压双回路钢管塔真型试验分析［J］. 电力建设, 2011, 32(4):29-33.

［6］DL/T 5154—2002 架空送电线路杆塔结构设计技术规定［S］. 北京：中国电力出版社，2002.

［7］GB 50017—2003 钢结构设计规范［S］.北京：中国计划出版社，2003.

［8］左元龙，付鹏程. 螺栓连接组合角钢的整体稳定及分肢计算［J］. 电力建设，2013，34(5)：80-85.

［9］郭勇, 沈建国, 应建国，等. 输电塔组合角钢构件稳定性分析［J］. 钢结构, 2012, 27(1): 11-16.

［10］黄兰兰, 李振宝, 唐贞云，等. 扭转屈曲对十字截面轴心压杆承载力的影响［J］. 电力建设, 2010, 31(6): 1-5.

［11］ASCE 10-97 Design of latticed steel transmission structures［S］. American Society of Civil Engineers, 1998.

［12］BS 8100-3 Lattice towers and masters, Part 3: Code of practice for strength assessment of members of lattice towers and masts［S］. Building and Civil Engineering Sector Committee, 2001.

［13］EN 50341-1 Overheard electrical lines exceeding AC 45kV,Part 1:General requirements-common specifications［S］.European Committee for Electrotechnical Standardization, 2001.