500kV长江大跨越输电塔线体系风致响应分析研究

罗柯镕; 余亮; 舒赣平; 李布辉; 宁帅朋

doi:10.13204/j.gyjzG21121615

500kV长江大跨越输电塔线体系风致响应分析研究

doi: 10.13204/j.gyjzG21121615

1. 混凝土及预应力混凝土结构教育部重点实验室, 南京 211189;
2. 东南大学土木工程学院, 南京 211189;
3. 中国能源建设集团江苏省电力设计院有限公司, 南京 211102

详细信息

作者简介:
罗柯镕,男,1993年出生,博士研究生。电子信箱:947820126@qq.com

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出版历程
- 收稿日期: 2021-12-16
- 网络出版日期: 2022-12-01

Analysis of Wind-Induced Response of a 500 kV Long-Span Transmission Tower-Line System Crossing the Yangtze River

1. The Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Nanjing 211189, China;
2. School of Civil Engineering, Southeast University, Nanjing 211189, China;
3. Jiangsu Power Design Institute Co., Ltd. of CEEC, Nanjing 211102, China

摘要

摘要: 大跨越输电塔线体系兼具大跨、高耸、柔性等特点,对风荷载异常敏感,且由于输电线、绝缘子与跨越塔的耦合作用,其动力特性和风致响应较为复杂。以在建的世界最高500kV长江大跨越工程为例,基于ABAQUS建立了单塔和塔线体系的有限元模型,研究了单塔和塔线体系的动力特性,并依据风荷载时程分析结果分析了该体系的风致响应和风振系数。研究结果表明:塔线体系跨越塔自振频率小于单塔;不同风攻角下塔线体系跨越塔顶点位移均大于单塔,加速度响应则小于单塔;现行电力规范计算风振系数加权平均值大于时程分析结果,偏于安全,但在主材混凝土灌注区段风荷载可能会被低估,同时规范未考虑到横担处质量和外形的变化导致风振系数的突变。
- 大跨越 /
- 塔线体系 /
- 风致响应 /
- 风振系数
Abstract: The long-span transmission tower-line system combines the characteristics of long-span, towering and flexibility, which is extremely sensitive to wind loads. Due to the coupling of the transmission wires, insulators and the spanning tower, its dynamic characteristics and wind-induced response are more complex. Taking the world’s tallest 500 kV transmission tower crossing the Yangtze River as an example, finite element models of single tower and tower-line system were established based on ABAQUS. The dynamic characteristics of single tower and tower-line systems were studied, and wind-induced vibration response together with wind-induced vibration coefficients were analyzed based on the results of wind load time-history analysis. The results showed the natural vibration frequency of the tower in transmission tower line system was less than that of single tower. Under different wind attack angles, the displacement of the tower line system at the apex of the tower was larger than that of a single tower, and the acceleration response was smaller.The weighted average value of wind-vibration coefficient calculated in the current code was greater than the time-history analysis results, which was partial to safety. However, the wind load in the concrete pouring area of main stressed tube might be underestimated, and the sudden change of wind-vibration coefficients caused by the change of mass and shape at the cross arm was not considered.
- long-span /
- tower-line system /
- wind-induced response /
- wind-induced vibration coefficient

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参考文献(21)

[1]	刘孟龙,吕洪坤,罗坤,等.真实山地地形条件下输电塔线体系风致响应数值模拟[J].振动与冲击,2020,39(24):232-239.
[2]	BATTISTA R C, RODRIGUES R S, PFEIL M S.Dynamic behavior and stability of transmission line towers under wind forces[J].Journal of Wind Engineering and Industrial Aerodynamics,2003,91(8):1051-1067.
[3]	HUNG P V, YAMAGUCHI H, ISOZAKI M, et al.Large amplitude vibrations of long-span transmission lines with bundled conductors in gustywind[J].Journal of Wind Engineering &IndustrialAerodynamics,2014,126:48-59.
[4]	TIAN L, PA N H, QIU C, et al. Wind-induced collapse analysis of long-span transmission tower-line system considering the member buckling effect[J]. Advances in Structural Engineering, 2019, 22(1):30-41.
[5]	FU X, LI H N, TIAN L,et al. Fragility analysis of transmission line subjected to wind loading[J]. Journal of Performance of Constructed Facilities, 2019, 33(4). DOI: 10.1061/(ASCE)CF.1943-5509.000.
[6]	TIAN L, ZHANG X, FU X. Fragility analysis of a long-span transmission tower-line system under wind loads[J].Advances in Structural Engineering, 2020, 23(10):2110-2120.
[7]	李宏男,白海峰.输电塔线体系的风(雨)致振动响应与稳定性研究[J].土木工程学报,2008(11):31-38.
[8]	付兴,林友新,李宏男.风雨共同作用下高压输电塔的风洞试验及反应分析[J].工程力学,2014,31(1):72-78.
[9]	赵爽,晏致涛,李正良,等.1000kV苏通大跨越输电塔线体系气弹模型的风洞试验研究[J].中国电机工程学报,2018,38(17):5257-5265 ,5323.
[10]	楼文娟,白航,杨晓辉,等.特高压输电线路动态风偏响应及参数影响分析[J].土木工程学报,2019,52(3):41-49.
[11]	沈国辉,张帅光,楼文娟,等.考虑风攻角的硬跳线气动力系数和风偏计算[J].振动与冲击,2021,40(13):1-8.
[12]	沈国辉,包玉南,郭勇,等.输电线顺线路方向风荷载及分配模式[J].浙江大学学报(工学版),2020,54(9):1658-1665.
[13]	电力规划设计总院.架空输电线路杆塔结构设计技术规定:DL/T 5154—2012[S].北京:中国计划出版社,2012.
[14]	杨风利, 陈兵, 许志勇,等.500kV长江大跨越输电塔风振系数研究[J].中国电机工程学报,2022,42(7):2542-2556.
[15]	中华人民共和国住房和城乡建设部.建筑结构荷载规范:GB 50009—2012[S].北京:中国建筑工业出版社,2012.
[16]	董新胜,张军锋,杨洋,等.脉动风紊流度的相关参数分析[J].结构工程师, 2019,35(3):155-160.
[17]	王卫华.结构风荷载理论与Matlab计算[M].北京:国防工业出版社, 2018.
[18]	尹鹏.大跨越输电塔-线体系动力特性和风振控制研究[D].武汉:华中科技大学,2009.
[19]	中华人民共和国住房和城乡建设部.110~750 kV架空送电线路设计规范:GB 50545—2010 [S].北京:中国计划出版社,2010.
[20]	邵天晓.架空送电线路的电线力学计算[M].北京:中国电力出版社, 2003.
[21]	电力规划设计总院.110kV~750kV架空输电线路大跨越设计技术规程:DL/T 5485—2013[S].北京:中国计划出版社,2013.