| 采煤沉陷区输电铁塔复合防护板基础抗变形性能及其板厚取值研究 |
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| 引用本文： | 舒前进,袁广林,郭广礼,张云飞.采煤沉陷区输电铁塔复合防护板基础抗变形性能及其板厚取值研究[J].地震学刊,2012(3):294-299. |
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| 作者姓名： | 舒前进 袁广林 郭广礼 张云飞 |
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| 作者单位： | [1]江苏省土木工程环境灾变与结构可靠性重点实验室中国矿业大学,江苏徐州221116 [2]中国矿业大学力学与建筑工程学院,江苏徐州221116 [3]江苏省资源环境信息工程重点实验室中国矿业大学,江苏徐州221116 [4]江苏省电力公司徐州供电公司,江苏徐州221006 |
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| 基金项目： | 中央高校基本科研业务专项资金（2011QNB18）; 国家自然科学基金项目（50004008）资助 |
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| 摘 要： | 以某采煤沉陷区内的典型输电铁塔及其复合防护板基础工程为背景,考虑地基-基础-上部铁塔结构的共同作用,对不同板厚复合防护板基础的抗采动变形性能进行了研究,并引入＂保护作用＂的概念,对独立基础和复合防护板基础的抗变形性能进行了分析。研究表明,设置复合防护板后,与独立基础相比,可明显减少铁塔支座的水平位移及上部结构的应力,支座位移与结构应力随着复合大板厚度的增大而减小,其减小的幅度随着板厚的增大而趋缓,当板厚达到一定数值以后几乎不再减小。提出的复合防护板的厚度可取铁塔基础长向根开的1/45～1/35的建议,以供采煤沉陷区内复合防护板基础的设计参考。
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| 关 键 词： | 采煤沉陷区 输电铁塔 复合防护板基础 抗变形 有限元模型 |
Research on the Composite Foundation Anti-deformation Performance and Optimal Thickness of Electricity Transmission Towers in Mining Subsidence Area |
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| SHU Qian-jin,YUAN Guang-lin,GUO Guang-li,ZHANG Yun-fei.Research on the Composite Foundation Anti-deformation Performance and Optimal Thickness of Electricity Transmission Towers in Mining Subsidence Area[J].Journal of Seismology,2012(3):294-299. |
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| Authors: | SHU Qian-jin YUAN Guang-lin GUO Guang-li ZHANG Yun-fei |
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| Institution: | 1.Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering(China University of Mining and Technology),Xuzhou 221116,China;2.School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China;3.Jiangsu Key Laboratory of Resources and Environmental Information Engineering(China University of Mining and Technology),Xuzhou 221116,China;4.Xuzhou Power Supply Company,Xuzhou 221006,China) |
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| Abstract: | In this paper,the finite element models are established for typical kinds of electricity transmission tower.The anti-deformation performances of single foundation and composite foundation with different thickness protection plate are studied with numerical simulation.The study indicates that,compared to the single foundation,the horizontal displacements of supports and the stresses of the upper structure are distinctly decreased by the composite foundation.The study also indicates that,the improvement of anti-deformation performance by increasing thickness of protection plate played an important role only in a limited range,the feasible minimum thickness of the plate is about 1/45-1/35 of the distance between two supports.As a result,the study lends a support to the improvement of the foundation design method for the transmission tower in the subsidence area. |
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| Keywords: | mining subsidence area electricity transmission tower composite foundation with protecting apron plate thickness anti-deformation FEM |
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