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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

28卷

期数:

2011年01期

页码:

58-63

栏目:

出版日期:

2011-03-20

文章信息/Info

Title:

Stability of Thin Steel Plate Considering Stiffening and Opening

作者:

李春霞,宋波

北京科技大学 土木与环境工程学院,北京 100083

Author(s):

LI Chun-xia, SONG Bo

School of Civil & Environment Engineering, University of Science & Technology Beijing, Beijing 100083, China

关键词:

选择性催化还原反应器;  结构稳定性;  加劲板;  矩形开孔板;  临界屈曲特征值

Keywords:

SCR reactor;  stability of structure;  stiffening plate;  rectangular plate with hole;  critical buckling eigenvalue

分类号:

TU392.4

DOI:

-

文献标志码:

A

摘要:

应用有限元软件ANSYS对烟道、选择性催化还原(SCR)反应器及支架进行整体结构静力分析,选取反应器上变形最大的侧壁板及有矩形大开孔的壁板作为研究对象,分别研究了加劲形式及开孔对薄钢板稳定性的影响。结果表明:对于单向受压的加劲板,现有的加劲肋设计方法满足稳定性的要求; 在其他条件相同、板受单向均布压力时,加劲肋截面面积相同的条件下,配置L型加劲肋时板的稳定性比配置 T型加劲肋的板更强; 矩形大开孔改变了板的应力分布,在开孔的周边容易出现失稳现象,随着开孔的增大,板的临界屈曲特征值呈线性降低,但在开孔周边布置加劲肋能有效防止开孔周边板的失稳; 相同截面面积的L型加劲肋对板的约束能力比T型加劲肋强; 开孔会降低板的承载力,但开孔周边适当添加加劲肋能较大程度提高加劲板的临界屈曲特征值。

Abstract:

The static analysis of the whole structure containing flue, selective catalytic reduction(SCR)reactor and bracket was carried out by using finite element software ANSYS. Selecting the top plate and the holed wall-plate as the object of study, the influence of the stability on thin steel plate considering stiffening and large rectangular opening was respectively studied. Results show that the present design of stiffening rib can meet the requirements of stability for stiffening plate with one-side pressure. According to comparing the results based on the same area of section between L-stiffener and T-stiffener, L-stiffener has stronger restriction effect on the plate. Large rectangular opening changes stress distribution on the plate. The critical bucking eigenvalue is sharply reduced because of the hole and it is easy to appear unsteadiness phenomenon around the hole. But using stiffening rib around the hole can effectively prevent instability. Furthermore, the constraint capacity of L-stiffener on the plate is stronger than T-stiffener with the same area of section, and hole on the plate can cut down the bearing capacity of plate, but using stiffening rib around the hole can increase critical buckling eigenvalue.

参考文献/References:

[1] 铁摩辛柯 S P,盖莱 J M.弹性稳定理论[M].2版.张福范,译.北京:科学出版社,1965. TIMOSHENKO S P,GERE J M.The Theory of Elastic Stability[M].2nd ed.Translated by ZHANG Fu-fan.Beijing:Science Press,1965.
[2]刘世恩,刘胜君.加劲板的计算方法研究[J].工业建筑,1998,28(10):30-32,47. LIU Shi-en,LIU Sheng-jun.Research on the Computer Method of Stiffened Plates[J].Industrial Construction,1998,28(10):30-32,47.
[3]邵旭东,张 欣,李立峰.开口加劲板稳定极限承载力分析[J].公路,2005(7):1-4. SHAO Xu-dong,ZHANG Xin,LI Li-feng.Stability Analysis of Ultimate Bearing Capacity of Open Stiffened Plates[J].Highway,2005(7):1-4.
[4]李小灵,张宇力,曾广武,等.大开口船舶板架的稳定性分析及补强方法研究[J].船海工程,2001(增2):79-81,84. LI Xiao-ling,ZHANG Yu-li,ZENG Guang-wu,et al.Research on the Strengthen Method and the Stability of Ship Panel with Large Opening[J].Ship & Ocean Engineering,2001(S2):79-81,84.
[5]张宇力,曾广武,段 洪,等.大开口对船舶板架稳定性和极限承载力的影响[J].华中科技大学学报:自然科学版,2002,30(5):56-58,64. ZHANG Yu-li,ZENG Guang-wu,DUAN Hong,et al.The Effect of Big Placket on Stability and Terminal Loading in Marine Structure[J].Journal of Huazhong University of Science and Technology:Nature Science Edition,2002,30(5):56-58,64.
[6]徐 力,刘荣桂,韦芳芳.开孔板的有限元分析[J].江苏大学学报:自然科学版,2002,23(5):28-30. XU Li,LIU Rong-gui,WEI Fang-fang.Analysis of Plates with Openings by Finite Element Method[J].Journal of Jiangsu University:Natural Science Edition,2002,23(5):28-30.
[7]韩明爽,杨成永,陆景慧,等.钢筋混凝土开孔板受力分析[J].工业建筑,2005,35(增1):120-123. HAN Ming-shuang,YANG Cheng-yong,LU Jing-hui,et al.Mechanical Analysis of Concrete Slab with Rectangle Opening[J].Industrial Construction,2005,35(S1):120-123.
[8]狄 谨,周绪红,吕忠达,等.正交异性钢箱梁U型肋加劲板极限承载力试验[J].中国公路学报,2009,22(2):59-64. DI Jin,ZHOU Xu-hong,LU Zhong-da,et al.Experiment on Ultimate Bearing Capacity of U-stiffened Plate of Orthotropic Steel Box Girder[J].China Journal of Highway and Transport,2009,22(2):59-64.
[9]李立峰,邵旭东.扁平钢箱梁闭口U形加劲板屈曲特性理论分析[J].公路交通科技,2008,25(3):88-92. LI Li-feng,SHAO Xu-dong.Theoretical Analysis on Stability Property of U-rib Stiffened Plate of Flat Steel Box Girder[J].Journal of Highway and Transportation Research and Development,2008,25(3):88-92.
[10]陈 骥.钢结构稳定理论与设计[M].2版.北京:科学出版社,2003. CHEN Ji.Stability Theory and Design of Steel Structures[M].2nd ed.Beijing:Science Press,2003.
[11]童根树.钢结构的平面外稳定[M].北京:中国建筑工业出社,2007. TONG Gen-shu.Stability of Out-plane of Steel Structures[M].Beijing:China Architecture & Building Press,2007.
[12]谭明鹤,王荣辉,黄永辉,等.刚性悬索加劲钢桁梁桥特殊节点模型试验[J].中国公路学报,2008,21(1):47-52. TAN Ming-he,WANG Rong-hui,HUANG Yong-hui,et al.Special Joint Model Test of Stiff Suspension Reinforced Steel Truss Bridge[J].China Journal of Highway and Transport,2008,21(1):47-52.
[13]李立峰,邵旭东,易伟建,等.扁平钢箱梁局部稳定模型试验[J].中国公路学报,2007,20(3):60-65. LI Li-feng,SHAO Xu-dong,YI Wei-jian,et al.Model Test on Local Stability of Flat Steel Box Girder[J].China Journal of Highway and Transport,2007,20(3):60-65.
[14]刘永健,张俊光,黄健超,等.双层桥面三桁刚性悬索加劲钢桁梁桥全桥试验模型[J].建筑科学与工程学报,2008,25(3):61-65. LIU Yong-jian,ZHANG Jun-guang,HUANG Jian-chao,et al.Test Model of Whole Bridge of Double-deck and Three Main Trusses Steel Bridge with Rigid Cable[J].Journal of Architecture and Civil Engineering,2008,25(3):61-65.
[15]刘永健,刘 剑,朱 铭,等.双层桥面三桁刚性悬索加劲钢桁梁桥全桥静动力模型设计[J].建筑科学与工程学报,2008,25(1):84-87. LIU Yong-jian,LIU Jian,ZHU Ming,et al.Static and Dynamic Model Design of Total Bridge of Double-deck and Three Main Trusses Steel Bridge with Rigid Cable[J].Journal of Architecture and Civil Engineering,2008,25(1):84-87.
[16]孔祥福,周绪红,狄 谨,等.钢箱梁斜拉桥正交异性桥面板的受力性能[J].长安大学学报:自然科学版,2007,27(3):52-56. KONG Xiang-fu,ZHOU Xu-hong,DI Jin,et al.Orthotropic Deck Performance of Steel Box Girder Cable-stayed Bridge[J].Journal of Chang'an University:Natural Science Edition,2007,27(3):52-56.
[17]郑 宏,杨飞颖,张维刚.钢板深梁屈曲分析[J].建筑科学与工程学报,2007,24(3):31-35. ZHENG Hong,YANG Fei-ying,ZHANG Wei-gang.Buckling Analysis on Steel Plate Deep Beam[J].Journal of Architecture and Civil Engineering,2007,24(3):31-35.
[18]邵旭东,王皓磊,昌 颖,等.多排预应力波形钢腹板组合挑梁试验及力学特性分析[J].中国公路学报,2008,21(4):67-73. SHAO Xu-dong,WANG Hao-lei,CHANG Ying,et al.Experiment and Mechanical Characteristic An-alysis of Multi-cantilever Prestressed Composite Beams with Corrugated Steel Webs[J].China Journal of Highway and Transport,2008,21(4):67-73.
[19]狄 谨,周绪红,孔祥福,等.波形钢腹板预应力混凝土组合箱梁试验[J].长安大学学报:自然科学版,2009,29(5):64-70. DI Jin,ZHOU Xu-hong,KONG Xiang-fu,et al.Experimental Research on Pre-stressed Concrete Composite Box Girders with Corrugated Steel Webs[J].Journal of Chang'an University:Natural Science Edition,2009,29(5):64-70.
[20]狄 谨,周绪红,游金兰,等.波纹钢腹板预应力混凝土组合箱梁抗扭性能[J].长安大学学报:自然科学版,2009,29(3):58-63,76. DI Jin,ZHOU Xu-hong,YOU Jin-lan,et al.Torsional Property of Prestressed Concrete Composite Beam with Corrugated Steel Webs[J].Journal of Chang'an University:Natural Science Edition,2009,29(3):58-63,76.

相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2010-11-30
基金项目:“十一五”国家科技支撑计划项目(2006BAJ13B04)
作者简介:李春霞(1985-),女,湖北武汉人,工学硕士,E-mail:xia263612103@yahoo.cn。

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更新日期/Last Update: 2011-03-20