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第2期 波等:考虑大变形效应的薄壁钢结构烟道力学性能分析 .271. (a) (c) 中车群年件裙 r「「「 跨度15.6m一 留13烟道测点布置.(a)测点位置:(b)应变片黏贴:(c)平面图 Fig.13 Point arrangement of the flue:(a)point location;(b)pasting of strain gauge;(c)plan view 400 350…- (李明惠,沈涛.大型火电厂烟道结构设计运用CAE技术 3005 的研究.南京工程学院学报:自然科学版,2004,2(4):56) 9250 3 East China Electric Power Design Institute,State Power 200 Corporation of China.DL/T 5121--2000 Technical Code 150 for Design of Thermal Power Plant Air Flue Gas 100 。一监测平均值 50 ■…数值模拟值 Ducis/Raw Coal Pulverized Coal Piping.Beijing: China Electric Power Press,2000 y C D 的 (国家电力公司华东电力设计院.DL/T5121-2000火力发 测点 电厂烟风煤粉管道设计技术规程。北京:中国电力出版社 图14 应变监测结果和数值模拟结果对比 2000) Fig.14 Contrast of strain between monitoring results and [4]Qian CX.Methods of Calculation and Design for Techni- numerical simulation ones cal Code for Design of Thermal Power Plant Air Flue 4 结论 Gas Ducts/Raw Coal Pulverized Coal Piping.Beijing: China Electric Power Press,2004 (1)考虑大变形效应,烟道结构的等效应力一 (线成绪,火力发电厂烟风煤粉管道设计技术规程配套设计 般较线性计算的结果小,大变形效应对整个结构的 计算方法.北京:中国电力出版社,2004) 节点等效应力的影响约9%左右. [5]Li S L,Shi Y J,Wang Y Q.Stability analysis on steel flue (2)考虑大变形效应,烟道结构的等效应力较 gas duct in large thermal power plant.J Changsha Univ 小变形计算的结果小8%54%,但结构的变形较小 Electr Power Nat Sci,2006,21(3):20 (李胜良,石永久,王元清.大型火力发电厂钢烟道结构的 变形计算的要大8%~47%.考虑烟道长度的影响后, 稳定性分析.长沙电力学院学报:自然科学版,2006,21(3): 这种差别随着烟道长度的增加更加明显 20) (3)通过对不同长度烟道大变形效应的非线性 [6]Li S L,Shi Y J,Wang Y Q,et al.Analysis on mechanics 分析,可知对于烟道整体而言,其跨度方向中间板 properties of steel flue gas duct with stiffeners in thermal 格的应力值非常接近,但烟道长度方向中间板格的 power plant.J Wuhan Univ Technol,2007,29(4):87 (李胜良,石永久,王元清,等.火力发电厂外加强钢烟道结 应力总体上随着烟道长度的增加而减小,说明烟道 构的力学性能分析.武汉理工大学学报,2007,29(4):87)) 设计规范中按照烟道截面进行设计的方法可进一步 7]Zhao J L,Fu W L,Yang H.Research on the optimum de 改善. sign of FGD flue thickness and its reinforcement.Electr (4)对现场监测与数值模拟结果的比较分析, Equp,2005,6(11小:70 可知两者数据是基本一致的,说明了数值模拟分析 (赵经濂,傅文玲,杨虹.脱硫烟道壁厚及其加固肋设计优 化探讨.电力设备,2005,6(11):70) 的可靠性 8]Ghavami K,Khedmatib M R.Numerical and experimen- tal investigations on the compression behavior of stiffened 参考文献 plates.J Constr Steel Res,2006,62(11):1087 9Khedmati MR,Rastani M,Ghavami K.Ultimate strength [1]Li Y,Shi Y D,Xu Z D,et al.Computer system for de- and ductility characteristics of intermittently welded stiff- signing boiler's rectangle duct shell and panel design.J ened plates under in-plane axial compression.J Offshore Jilin Univ Inf Sci Ed,2003,21(3):285 Mech Arct Eng,2008,130(1):10 (李颗,石亚东,徐振东,等,锅炉矩形烟风道壳体和壁板设 (10]Chen J M,Chen Y B,Huang YY.Analysis of acoustic 计计算机系统.吉林大学学报:信息科学版,2003.21(3): radiation from orthogonally stiffened cylindrical shell in 285) water based on the finite element method.J Wuhan Univ [2]Li M H.Shen T.The application of CAE technology in flue Techno4,2004,26(474 structure design of large thermal power plants.J Nanjing (陈军明,陈应波,黄玉盈.水中双向正交加肋圆柱壳体声 Ist Technol Nat Sci Ed 2004,2(4):56 辐射的有限元法.武汉理工大学学报,2004,26(4):74)
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