高铁跨越架结构分析关键问题研究
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摘要
高铁跨越架是一种能迅速搭建的跨越高速铁路的金属支架体。目前,高速铁路跨越施工尚无国家或行业规范,设计时无标准可遵循。以某高铁跨越架结构为背景,对跨越架结构设计中存在的若干关键问题进行深入研究。讨论了高铁跨越架分析中风荷载计算方法,给出了断线荷载模拟建议,并对现有跨越架的整体稳定分析方法进行研究,提出一种简便的计算方法。研究内容可为送电线路安全、高效地跨越高速铁路提供技术保证。
The crossing frame structure for high-speed railway is a kind of metal frame which can be quickly assembled to cross the high-speed railway. Currently,for the high-speed railway crossing construction,there are no national or industrial standards to follow in design. Taking a crossing frame structure for high-speed railway as the background,several key problems in the design of the crossing frame structures were investigated. Wind load calculating method in analysis of crossing frame structure for high-speed railway was discussed and recommendations on simulation of broken wire load were provided. Overall stability analysis method for current crossing frame structure was studied and a simplified calculating method was given. Research contents can provide technical insurance for safe and highly efficient crossing of transmission line over high-speed railway.
The crossing frame structure for high-speed railway is a kind of metal frame which can be quickly assembled to cross the high-speed railway. Currently,for the high-speed railway crossing construction,there are no national or industrial standards to follow in design. Taking a crossing frame structure for high-speed railway as the background,several key problems in the design of the crossing frame structures were investigated. Wind load calculating method in analysis of crossing frame structure for high-speed railway was discussed and recommendations on simulation of broken wire load were provided. Overall stability analysis method for current crossing frame structure was studied and a simplified calculating method was given. Research contents can provide technical insurance for safe and highly efficient crossing of transmission line over high-speed railway.
引文
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[3]JOHN I F.Broken wire analysis of transmission line systems[J].Computers and Structures,1984,18(6):1077-1085.
[4]鲍立华.输电塔线体系的断线分析[D].杭州:浙江大学,2008.
[5]高金钟.金属结构跨越架架线施工工况、荷载及有关问题[J].电力建设,1999,20(5):23-26.
[6]沈国辉,默增禄,孙炳楠,等.突然断线对输电塔线体系的冲击作用研究[J].振动与冲击,2009,28(12):4-8.
[7]肖军利.复杂支承条件下特种空间杆系钢结构研究[D].南京:南京工业大学,2004.
[8]邓洪洲,朱松晔,王肇民.大跨越输电塔线体系动力特性及风振响应[J].建筑结构,2004,34(7):25-28,10.
[9]隆嘉祥.桅杆结构整体稳定研究[D].上海:同济大学,2008.