包玉南,姚亚芬,廖玉龙,冯鹤,徐锃,潘峰
BAO Yunan,YAO Yafen,LIAO Yulong,FENG He,XU Zeng,PAN Feng

• 1:中国能源建设集团浙江省电力设计院有限公司
• 2:国网浙江省电力有限公司建设分公司

摘要(Abstract)：

为了降低1 000 kV特高压钢管塔横担发生破坏的概率，采用通用软件TTA和有限元软件ANSYS对横担内力进行精细化分析，提出了横担空前和空后两种布置方式，研究了两种方式下耐张塔和直线塔的横担内力变化，并分析了引起内力差异的原因。研究表明，横担上平面在空前和空后布置情况时的内力均小于封满情况时，横担下平面交叉材比封满情况下内力大，直线塔整体受力小于耐张塔；横担上平面交叉材空前或空后时，建议采用ANSYS有限元计算分析横担上平面空前或空后布置情况下的内力；横担上平面交叉材全封满时，通用程序TTA计算结果与ANSYS计算结果一致。
In order to reduce the probability of damage to the cross arm of a 1 000 kV UHV steel tube tower, the general software TTA and the finite element software ANSYS are used for refined analysis on the internal force of the cross arm. Two cross arm arrangement methods are proposed: one is to reduce the first diagonal member and the other is to reduce the last diagonal member. Moreover, the internal force changes of the cross arm of the strain tower and the straight line tower under the two arrangement modes are compared under the two layout methods, and the reasons of the difference in internal forces are analyzed. Studies have shown that the internal forces of the cross arm on the upper plane in case of the reduced first diagonal member and the last diagonal member are smaller than those under the fully sealed condition; the internal forces of the cross member on the lower plane are larger than those under the fully sealed condition; the overall force of the straight line tower is less than that of the strain tower. Under the first-member-less or last-member-less layout of the cross member on the upper plane, it is suggested to adopt ANSYS finite element to calculate and analyze internal forces on the upper plane under the two arrangement modes; when the cross member on the upper plane of the cross arm is fully sealed, the TTA and the ANSYS share the same calculation results.

关键词(KeyWords)： 输电线路;特高压;钢管塔;横担布置;有限元
transmission line;UHV;steel tube tower;cross arm arrangement;finite element

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（52178511）

作者(Author): 包玉南,姚亚芬,廖玉龙,冯鹤,徐锃,潘峰
BAO Yunan,YAO Yafen,LIAO Yulong,FENG He,XU Zeng,PAN Feng

DOI: 10.19585/j.zjdl.202304013

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