钢管塔斜杆计算长度研究-结构工程专业论文.docxVIP

摘要随赣我国经游的发展，各地将建造越来越多的微波通讯塔、电视发射塔、输电线碴塔簪 摘要 随赣我国经游的发展，各地将建造越来越多的微波通讯塔、电视发射塔、输电线碴塔簪 高耸构筑物，其中大部分将是钢塔。圆钢管截面由于麒独特的优点而被广泛地运用于钢结构 塔絮中。铜管塔瓣大量应螺使褥人们对箕设计水平熬甏求越采越裹，本文对镪管塔糕轷谤髯 长度的研究将有助于提高设计的科学性和经济性。 钢管塔节点遢常采用相贯线焊接的连接方式，j霄点Ⅺ4度较大，因此筠处于最不利状态的 受压斜枵失稳时会受到相邻抒停的约束。本文运用弹性稳定理论，结台塔架受力特点，充分 考虑受压斜杆所鼹的约束，用解析方法分析了常见膜杆形式的钢管塔中受压斜杆的计算长 度。 本文按塔架艘杆形式、几何特征、塔柱与腹杆的刚发比分类建立了多个四边形钢管塔的 简化模型，对每个模型计薜正塔面和对角线两种风荷裁方向下艇不利受惩斜杆在平面内约求 和平露辨约束下簸临界穗裁，并由此褥至Ⅱ相应的平嚣内和平蠹外计算长震系数。本文对计算 结果进行了分析井给出了钢管塔斜杆计算长厦系数的建议取值。 荚键词：铡譬塔黢抒诗葬长度稳悫 AbstractWith Abstract With the development of China’s economy．more and mole microwave communication towers，TV towers and transmission towers most of which steel towers will be built throughout the countl攀,CHS(eircular hollow section)is widely used in steel towers due its outstanding performances and higher quality of design CHS towers required．The research 蝴effective lengths of crossing web members in this paper谢珏酝蝰tO improve the design in scientifieity and economy． The members of CHS towers commonly directly welded joints and thus the joints have stiffness．The crossing web members be restricted by the neighboring members when buckling With fully consideration the restriction and mechanical behavior of towers，the effective lengths of pressed web members investigated this paper analytical methods in theory． Multiple calculation models established in tcrms of web member styles，geometric properties of tower and the ratio of column stiffness member st／ffmess，To model the critical load of the most disadvantaged pressed crossing web member is computed under flae inplane and out-of-plane reshsctions and the effegfive length factor is acquired．The、results analyzed and the effective length factors of the crossing web!members of CHS towers suggested． Keywords：CHS towels，web members，effective length，stability 声 声 明 本人郑重声明：本论文是在导师的指导下，独立进行研究工作所取得的成果，撰写成 硕士学位论文“钢管塔斜杆计算长度研究”。除论文中已经注明引用的内容外，对论文的研 究做出重要贡献的个人和集体，均己在文中以明确方式标明。本论文中不包含任何未加明确 注明的其他个人或集体已经公开发表的成果。 本声明的法律责任由本人承担。 学位论文储签名：铱 2004年3月11日 第一章绪论第一章绪论 第一章绪