摘要
针对目前大型火力发电厂烟道截面大、壁板较薄，易发生局部失稳的问题，以国内300MW机组钢烟道为例，利用ANSYS软件，通过对7～21m不同跨度、不设纵向加劲肋和设置纵向加劲肋的钢烟道进行屈曲研究，分析烟道壁板的屈曲模态，为防止钢烟道失稳提出设计建议．
The local buckling is a crucial point in the current projects of the steel flue gas duct for the unique characteristic of huge section with thin walls. In this paper, researches by ANSYS are carried out on a domestic project the steel flue gas duct of 300MW generating sets. The eigen-buckling analysis is conducted on the steel flue gas duct with span range from 7m to 21m to discuss the possible buckling modes; as well, different models with or without stiffening ribs are compared. Finally, some design suggestions for the steel flue gas duct are proposed.
出处
《长沙电力学院学报（自然科学版）》
2006年第3期20-23,共4页
JOurnal of Changsha University of electric Power:Natural Science
关键词
钢烟道
有限元
屈曲分析
设计建议
steel flue gas duct
FEM
eigen-buckling analysis
suggestions for design
