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工程设计学报
Chinese Journal of Engineering Design  2011, Vol. 18 Issue (4): 282-287    DOI:
    
Seismic behaviour of long crossing transmission tower and tower-line system under multiple support excitation
 SUN  Jian-Mei1,2, YANG  Fu-Gang3
1. College of Economy and Management, Shanghai University of Electric Power, Shanghai 200090, China;
2. College of Civil Engineering, Southeast University, Key Lab of RC & PC Structure, Ministry of Education, Nanjing 210096, China; 3. SINOHYDRO Corporation Limited, Beijing 100048, China
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Abstract  The seismic response of long crossing transmission single tower and tower-line system were systematically studied to find the difference between single tower and tower-line system under multiple support excitation by time history analysis method. The response difference between the single tower and tower-line system was investigated through the max node displacement, torsion, axial force and the base shear force. The results show that the seismic response difference of the single tower and tower-line system is significant, and the difference is relative to the nodes location and apparent wave velocity. So for long crossing transmission tower the the coupling of the tower and line should be considered when it is modeled for seismic analysis under multiple support excitation, otherwise those results will be over\|safety or over-dangerous．

Key words： multiple support excitation      long crossing transmission single tower      tower\      line system      compare analysis of seismic response     
Published: 28 August 2011
CLC:  TU 311.3  
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SUN Jian-Mei, YANG Fu-Gang. Seismic behaviour of long crossing transmission tower and tower-line system under multiple support excitation. Chinese Journal of Engineering Design, 2011, 18(4): 282-287.

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https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2011/V18/I4/282


多点输入下大跨输电单塔和塔线体系抗震性能分析

为了分析多点输入下大跨越输电单塔和塔线体系结构响应的差异,采用时程分析法系统地分析了多点输入下其地震响应,从节点最大位移、结构最大扭转角、杆件最大轴力和基底剪力等方面找出了2种结构体系地震响应的差异.通过分析可知,单塔和塔线体系结构响应存在较大的差异,且其差异与其所处的位置有关,并且与视波速的变化有关.因此对于大跨输电塔结构,应该考虑塔和线的耦合作用,在进行抗震分析建模时应采用塔线体系模型,否则得出的结论将偏于保守或偏于危险.

关键词： 多点输入,  大跨输电单塔,  塔线体系,  地震响应对比分析 
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