考虑大变形效应的薄壁钢结构烟道力学性能分析  

Mechanical property analysis of the thin-wall steel structure flue considering large deformation effect

作　　者：宋波[1,2] 易煜[1,2] 武晓东[1,2] 王利[3] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]金属矿山高效开采与安全教育部重点实验室,北京100083 [3]北京国电龙源环保工程有限公司,北京100039

出　　处：《北京科技大学学报》2013年第2期265-271,共7页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(51078033);教育部海外名师项目(MS2011BJKJ005))

摘　　要：针对浙江华能玉环电厂脱硝工程,应用有限元分析方法对烟道结构进行小变形弹性和大变形弹性模拟,对钢结构烟道在实际荷载作用下的力学性能进行了分析,探讨了烟道长度变化对烟道结构应力和变形的影响.考虑大变形影响时,烟道的应力分布均匀,其应力值较不考虑大变形的应力值小5%～50%,烟道长度的变化对应力值的影响不超过20%.结合现场监测验证了数值模拟的可靠性.A denitration project in Zhejiang Huaneng Yuhuan Power Plant in China was taken as the research object, and the finite element method was used to simulate elastic properties in small deformation and large deformation. The mechanical properties of the flue in practical load were studied, and the influence of the flue length on the stress and deformation were discussed. It is found that because of considering large deformation effect, the equivalent stress of the flue is well-distributed, and its values decrease by 5% to 50% The influence of the change in flue length on the stress is less than 20%. At last, monitoring was used to show the reliability of numerical simulation.

关 键 词：薄壁结构 钢结构 烟道 非线性分析 应力分析 有限元法 

分 类 号：TU392.4[建筑科学—结构工程]