| 大跨越输电塔线体系的地震响应研究 |
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| 引用本文： | 沈国辉,孙炳楠,何运祥,叶尹,楼文娟.大跨越输电塔线体系的地震响应研究[J].工程力学,2008,25(11). |
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| 作者姓名： | 沈国辉 孙炳楠 何运祥 叶尹 楼文娟 |
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| 作者单位： | [1]浙江大学土木系,杭州310027 [2]广东省电力设计研究院,广州510600 [3]浙江省电力设计院,杭州310007 |
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| 摘 要： | 大跨越输电塔线体系塔身极高,塔线耦合作用显著,抗震分析时需采用精细的三维有限元方法。针对某大跨越输电塔线体系,采用振型分解反应谱法和时程分析法进行考虑三向输入的地震响应研究。自重作用下塔线体系各杆件的轴应力比单塔体系大。地震作用下两种体系各杆件轴应力的差别不大,但对于支座的基底剪力,塔线体系的结果比单塔体系小。同时两种计算结果之间的可比性很好,说明方法应用和计算过程的准确性。
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| 关 键 词： | 输电塔 地震 大跨越 有限元 塔线体系 |
SESISMIC RESPONSES OF LONG-SPAN TRANSMISSION TOWER-LINE SYSTEM |
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| SHEN Guo-hui,SUN Bing-nan,HE Yun-xiang,YE Yin,LOU Wen-juan.SESISMIC RESPONSES OF LONG-SPAN TRANSMISSION TOWER-LINE SYSTEM[J].Engineering Mechanics,2008,25(11). |
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| Authors: | SHEN Guo-hui SUN Bing-nan HE Yun-xiang YE Yin LOU Wen-juan |
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| Affiliation: | 1. Department of Civil Engineering;Zhejiang University;Hangzhou 310027;China;2. Guangdong Electric Power Design Institute;Guangzhou 510600;3. Electric Power Design Institute of Zhejiang Province;Hangzhou 310007;China |
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| Abstract: | For the long-span transmission tower, whose height is large, the coupling effect of tower and line is prominent, and 3D Finite Element Method is required to analyze its seismic responses. In order to study the seismic behavior of a long-span transmission tower-line system, the mode-decomposition method and time-history analysis method are both employed considering three-dimensional earthquake excitation effect. Under gravity load, the tower-line system develops larger axial stresses and smaller shear forces... |
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| Keywords: | transmission tower earthquake long-span finite element method tower-line system |
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