[1]柯世堂,王浩.考虑地形效应的大型电视塔等效静风荷载分析[J].东南大学学报(自然科学版),2016,46(3):545-551.[doi:10.3969/j.issn.1001-0505.2016.03.015]
 Ke Shitang,Wang Hao.Analysis on equivalent static wind loads of large television tower considering topographic effect[J].Journal of Southeast University (Natural Science Edition),2016,46(3):545-551.[doi:10.3969/j.issn.1001-0505.2016.03.015]
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考虑地形效应的大型电视塔等效静风荷载分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第3期
页码:
545-551
栏目:
建筑学
出版日期:
2016-05-20

文章信息/Info

Title:
Analysis on equivalent static wind loads of large television tower considering topographic effect
作者:
柯世堂王浩
南京航空航天大学土木工程系, 南京 210016
Author(s):
Ke Shitang Wang Hao
Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
关键词:
高频天平测力试验 电视塔 地形效应 等效静风荷载
Keywords:
high frequency force balance test television tower topographic effect equivalent static wind loads
分类号:
TU279.744
DOI:
10.3969/j.issn.1001-0505.2016.03.015
摘要:
以在建的位于南京秀山顶部某大型电视塔工程为背景,考虑山顶地形三维效应的影响,对其进行了周边地形风洞试验和高频天平测力(HFFB)试验.基于改进的等效静风荷载(ESWLs)组合方法,对不同风向角、荷载工况和等效目标下该电视塔的基底内力和各层ESWLs进行了研究.在此基础上,进一步探讨了山顶地形、阻尼比和等效目标对此类电视塔结构风力分布特性的影响规律,并推荐了5种典型的最不利荷载组合工况下的各层ESWLs.结果表明:山地效应对于此类电视塔结构风力分布的影响显著;各层ESWLs沿高度分布规律受风向角、阻尼比以及等效目标的影响较弱;等效目标和阻尼比对主体结构的各层ESWLs数值大小影响明显,但对桅杆部分的影响则较弱.
Abstract:
Taking the television tower under construction located in the peak of the Nanjing Xiu Mountain as the research background, the wind tunnel tests for terrain and the high frequency force balance(HFFB)tests were carried out considering the three dimensional effects of mountain topography. The basement forces and the equivalent static wind loads(ESWLs)of each layer with different wind directions, load conditions, and equivalent targets were researched based on the improved ESWLs combination method. On this basis, the influences of the mountain terrain, the damping ratio, and the equivalent target on the wind force distribution of this type of television tower were investigated. The ESWLs of each layer under five typical unfavorable load combination conditions were recommended. The results show that the wind force distribution of this type of television tower is significantly affected by the topographic effect. The wind direction, the damping ratio, and the equivalent target have slight influence on the distribution of the ESWLs of each layer along the height. The equivalent target and the damping ratio have great influence on the numerical value of the ESWLs of each layer on the main structure, but the influence is smaller on the mast structure.

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备注/Memo

备注/Memo:
收稿日期: 2015-10-19.
作者简介: 柯世堂(1982—),男,博士,副教授,keshitang@163.com.
基金项目: 国家自然科学基金资助项目(51208254)、江苏省自然科学基金资助项目(BK2012390).
引用本文: 柯世堂,王浩.考虑地形效应的大型电视塔等效静风荷载分析[J].东南大学学报(自然科学版),2016,46(3):545-551. DOI:10.3969/j.issn.1001-0505.2016.03.015.
更新日期/Last Update: 2016-05-20