某大跨度储煤仓索桁架屋盖施工模拟分析  

作　　者：李聪聪 李娟 刘香 

机构地区：[1]内蒙古科技大学土木工程学院,内蒙古包头014010

出　　处：《科技创新与应用》2022年第31期66-69,共4页Technology Innovation and Application

摘　　要：当储煤仓跨度较大时,常见钢结构形式的储煤仓存在用钢量大、自重大的缺点。索桁架结构用于大跨度储煤仓可以解决上述不足。但大跨度索桁架结构储煤仓屋盖的施工具有一定难度,因此该文对大跨度索桁架结构储煤仓屋盖的施工方案进行研究。首先针对大跨度索桁架结构储煤仓屋盖的特点提出“低空组装索系,整体提升分级张拉”的施工方案,其次利用有限元软件MIDAS Gen对拟定的施工方案进行模拟计算,并对稳定索、承重索索力及屋面关键节点竖向位移进行分析。结果表明,该文所提出的施工方案可以保证屋盖拉索索力平稳转换,最终结构成型时索桁架屋盖索力及竖向位移符合设计要求。When the span of the coal bunker is large, the common steel structure coal bunker has the disadvantages of large amount of steel and high self-weight. The above shortcomings can be solved by using cable truss structure in longspan coal bunker. However, the construction of long-span cable truss coal storage roof is difficult, so the construction scheme of long-span cable truss coal storage roof is studied in this paper. Firstly, according to the characteristics of coal storage roof of long-span cable truss structure, the construction scheme of "assembling cable system at low altitude and lifting graded tension as a whole" is put forward. Secondly, the proposed construction scheme is simulated and calculated by using the finite element software MIDAS Gen, and the stable cable, load-bearing cable force and vertical displacement of key joints of the roof are analyzed. The results show that the construction scheme proposed in this paper can ensure the smooth conversion of the cable force of the roof, and the cable force and vertical displacement of the cable truss roof meet the design requirements.

关 键 词：索桁架 储煤仓 施工模拟 有限元分析 大跨度 

分 类 号：TU399[建筑科学—结构工程]