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| 复合地表变形对输电铁塔内力和变形的影响分析 | |
| 引用本文： | 袁广林,刘涛,张先扬,张云飞.复合地表变形对输电铁塔内力和变形的影响分析[J].建筑科学,2009,25(9). |
| 作者姓名： | 袁广林 刘涛 张先扬 张云飞 |
| 作者单位： | 1. 中国矿业大学建筑工程学院,江苏,徐州,221008 2. 山东新兴建筑规划设计研究院,山东,潍坊,261200 3. 徐州供电公司,江苏,徐州,221006 |
| 摘 要： | 以某塌陷区上典型输电铁塔为背景,采用数值分析方法,研究了复合地表变形对铁塔结构内力和变形的影响规律.研究结果表明,不同荷载条件下,在复合变形(双支座水平变形+倾斜)作用下铁塔中Q235杆件初始屈服时的支座水平位移值与双支座单独水平变形时基本相同;复合变形时,Q345杆件初始屈服的支座位移基本上是随着上部电线、风等荷载值的增大而减小,即上部荷载越大,杆件初始应力越大,出现屈服的支座位移越小.复合变形时Q345杆件达到屈服时的支座位移要比单独变形时小.90°大风荷载工况下塔架整体弯曲,在复合变形下出现屈服时支座位移较小.研究结果为处于塌陷区的塔架结构的安全性评估提供了依据. |
| 关 键 词： | 塌陷区 复合 地表变形 输电铁塔 内力 变形 |
The Analysis of Internal Force and Deformation of the Transmission Tower Influenced by Combinatorial Ground Surface Deformation |
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| YUAN Guang-lin,LIU Tao,ZHANG Xian-yang,ZHANG Yun-fei.The Analysis of Internal Force and Deformation of the Transmission Tower Influenced by Combinatorial Ground Surface Deformation[J].Building Science,2009,25(9). | |
| Authors: | YUAN Guang-lin LIU Tao ZHANG Xian-yang ZHANG Yun-fei |
| Affiliation: | 1;1.School of Architecture & Civil Engineering;China University of Mining and Technology;Xuzhou 221008;Jiangsu;China;2.Shandong Xinxing Architecture Planning & Design Institute;Weifang 261200;Shandong;3.Xuzhou Power Supply Company;Xuzhou 221006;China |
| Abstract: | Wirh the typical transmission tower in mining subsidence area presented as a prototype,the law of internal force and deformation of the transmission tower influenced by combinatorial ground surface deformation was studied with the numerical simulation method.The results of research indicate that,in any different load conditions,when Q235 bars begin yield,the horizontal displacements of supports in the combinatorial deformation case(double supports horizontal deformation+declining deformation) are nearly the... |
| Keywords: | mining subsidence area combinatorial ground surface deformation transmission tower internal force deformation |
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