| 木龙河斜拉跨越结构的静态力学分析 |
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| 引用本文： | 李瑞勇,署恒木,仝兴华,阎庆华.木龙河斜拉跨越结构的静态力学分析[J].力学与实践,2011,33(6):69-72. |
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| 作者姓名： | 李瑞勇 署恒木 仝兴华 阎庆华 |
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| 作者单位： | 1. 中国石油大学（华东）;2. 石油大学（华东）机械系;3. 石油大学机械系;4. 中石化胜利油田胜利工程设计咨询公司; |
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| 基金项目： | 中石化西气东送管道工程技术十条龙项目资助 |
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| 摘 要： | 利用有限元法对木龙河斜拉跨越结构进行了力学分析. 结果表明: 安装时索
具有一定的预应变可以提高结构的强度和刚度, 但预应变太大反而降低结构的刚度和强度,
预应变存在一个最优值, 且最优值与结构的形式和载荷有关; 在工作载荷或充水载荷作用下,
结构的强度刚刚满足要求; 在极限载荷作用下, 结构的强度不满足要求; 结构中最大应力出
现在左塔架顶端连接索处、右塔架顶端连接索处和管桥架中间上缘杆.
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| 关 键 词： | 斜拉跨越结构 预应变 强度 刚度 |
| 收稿时间： | 2011-01-06 |
THE STATIC MECHANICAL ANALYSIS OF PIPELINE CROSSING DIAGONAL CABLE TYPE STRUCTURE IN MULONG RIVER |
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| LI Ruiyong,SHU Hengmu TONG Xinghua YAN Qinghua.THE STATIC MECHANICAL ANALYSIS OF PIPELINE CROSSING DIAGONAL CABLE TYPE STRUCTURE IN MULONG RIVER[J].Mechanics and Engineering,2011,33(6):69-72. |
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| Authors: | LI Ruiyong SHU Hengmu TONG Xinghua YAN Qinghua |
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| Institution: | LI Ruiyong(*,2)) SHU Hengmu* TONG Xinghua* YAN Qinghua+ *(Department of Engineering Mechanics,College of Pipeline and Civil Engineering,China University of Petroleum(East China), Shandong Qingdao 266555,China) +(Shengli Oilfield Engineering Design Consultation Co.,Shandong Dongying 257061,China) |
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| Abstract: | The mechanical analysis is carried out for the preliminary design
of the pipeline crossing diagonal cable type structure in Mulong River by the
finite-element method. The results indicate that the cable with some
pre-strain can improve the strength and the stiffness of the
structure while it is installed, but if the pre-strain is too large
the strength and the stiffness will be declined, so there is an optimum value of
pre-strain for the structure, to be influenced by the form of structure
and the loads on structure; under the work loads or the water filling loads,
the strength of the structure just meets the requirements. Under the ultimate
loads, the strength of the structure does not meet the requirements. There are
three places where the maximum stress is reached in the structure the
left tower top connected with cable, the right tower top connected with
cable and the upper limb of the intermediate pipe bridge. |
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| Keywords: | pipeline crossing diagonal cable type structure pre-strain strength stiffness |
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