【作者】 潘春璠；

【导师】 钟铁毅； 赵冠远；

【作者基本信息】 北京交通大学 ， 桥梁与隧道工程， 2009， 硕士

【摘要】 输电塔的建设是电力工业中非常重要的一部分。在各种形式的输电塔中,钢管塔由于其优越性越来越广泛地被采用。所以,研究钢管塔的受力性能用以指导工程实践是具有重要意义的。相贯节点和法兰连接是目前钢管塔的两种主要的节点连接形式。它们的受力性能和计算方法一直是研究的重要课题。本课题的研究主要分为两个方面:一是对相贯节点连接中的空间KK型节点进行了数值计算,分析了主管荷载作用下节点的极限承载力及其随各几何参数的变化规律,并将分析结果与钢结构标准GB50017-2003进行了比较,所得结论可供工程设计参考应用。二是研究了钢管输电塔中刚性法兰连接的轴心力作用下的受力性能,应用有限元软件ANSYS进行分析,研究了法兰盘不同板厚对承载力的影响,并将有限元结果与《架空送电线杆塔结构设计技术规定》(DL/T5154-2002)计算结果进行对比分析,最后对规范中的法兰板最小厚度值提出了相关建议。更多还原

【Abstract】 Construction of transmission towers plays an important role in the electric power industry. In the transmission towers with various kinds of shapes, steel tubular towers are more and more widely used because of their superiority. It’s very necessary to launch the research on mechanical performance of steel tubular towers to throw light on practical construction. The multi-plannar steel tubular joints and the flange joints are two very important and primary connection joints for tubular towers. Their mechanical characteristics and analysis methods are always the significant research problems.Nonlinear finite element analysis on the tubular KK-joints (Circular Braces) has been carried on in this dissertation. The rules are summarized from the relation between the ultimate bearing capacity and parameters. The results from the models are compared with the solution according to the code for steel structure (GB50017-2003), some useful conclusions are drawn. Also, the rigid flanges under the axial force are analyzed in software ANSYS. And the influence of different thickness of the flange plate on the load-bearing capacity are analyzed. The results using finite element method are compared with the solution gotten from the Technical Regulation of Design for Tower and Pole Structures of Overhead Transmission Line (DL/T5154-2002). Finally, the related advice was put forward about the regulation of the minimum thickness of the flange plate.更多还原