| 大跨越输电塔体系的动力特性 |
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| 引用本文： | 李宏男,王前信.大跨越输电塔体系的动力特性[J].土木工程学报,1997(5). |
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| 作者姓名： | 李宏男 王前信 |
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| 作者单位： | 沈阳建筑工程学院
(李宏男)，国家地震局工程力学研究所(王前信) |
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| 基金项目： | 国家自然科学基金，海岸与近海工程国家重点实验室基金资助项目 |
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| 摘 要： | 大跨越输电塔-导线体系与一般的土木工程结构不同,最显著的特点是它由导线和各个钢塔连接而成的连续体.在地震作用下,由于相邻塔架的相互影响,输电塔-导线体系是一种复杂的空间塔-线耦联振动体系,对它进行精确计算十分困难而且复杂.本文在文献1]和2]的基础上,给出该种体系更一般的动力分析计算简图,导出了振动方程.最后结合具体例子,分析了该体系的自振特性,并与实测结果进行了比较.
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| 关 键 词： | 输电塔 耦联体系 动力特性 |
DYNAMIC CHARACTERISTICS OF LONG-SPAN TRANSMISSION LINES AND THEIR SUPPORTING TOWERS |
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| Li Hongnan Wang Qianxin.DYNAMIC CHARACTERISTICS OF LONG-SPAN TRANSMISSION LINES AND THEIR SUPPORTING TOWERS[J].China Civil Engineering Journal,1997(5). |
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| Authors: | Li Hongnan Wang Qianxin |
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| Abstract: | As the system is three-dimensional and the conductor is largely nonlinear, the accurate analysis of the coupled system composed of the transmission lines and their supporting towers subjected to earthquake excitations is quite complicated.Thus, a suitably simplified method for aseismic and dynamic a-nalysis of the system will be attractive. Such simplified dynamic analyst smod-els are given in this paper based on Refs. l ]and 2 ].The more general equa tion of motion is derived. And then a numerical example for the coupled system is carried out in different directions of transmission lines. At the end of the paper, some significant discussion results are given. |
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| Keywords: | transmission tower coupled system dynamic characteristics |
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