Development of Program for Elasto-plastic and Finite Displacement Analysis of Steel Structures Considering Interation between Local and Overall Buckling

考虑局部屈曲和整体屈曲相互作用的钢结构弹塑性和有限位移分析程序的开发

• 批准号: 08650557
• 负责人: KITADA Toshiyuki
• 金额: $ 1.22万
• 依托单位: Osaka city University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650557/
• 关键词: Interaction buckling; Local buckling; Overall buckling; Steel structures; Thin-walled cross section; Beam-column buckling; Elasto-Plastic and Finite Displacement Analysis; Computer program

(1)A program nemed "EPASS plus" for the elasto-plastic and finite displacement analysis of thin-walled framed structures with local buckling has been developed by combining the program "EPASS" for the elasto-plastic and finite displacement analysis of thin-walled framed structures without local buckling with the program "USSP" for analyzing the elasto-plastic and finite displacement behavior of steel structures consisting of stiffened plates by considering local buckling.(2)The elasto-plastic and finite displacement analysies of a column with thin-walled box cross section and a rigid framed bridge pier with one span and two stories in which the local shear buckling occurred in the web plate near the center of the lower beam member due to the Hyogo-ken Nambu Earthquke have been carried out by EPASS plus.(3)The numeracal result by EPASS plus is slightly different from the result by USSP in the analysis of the column, because the local initial deflection in the component plate panels is n … More eglected in the parts near the column ends which are idealized by the beam-column finite elements. it is, however, possible to idealize the parts near the colmn ends by using the beam-column finite elements, because the error of the numerical result by EPASS plus is negligible in practical use.(4)A convergent numerical result by the present EPASS plus can not be obtained in the loading level where the web plate idealized by the plate finite elements attains to its ultimate limit state due to the shear buckling, because the beam cross section woth the buckled web plate behaves in the way similar to a shear hinge. It is necessary to improve the present EPASS plus so as to be able to analyze the bridge pier even after the ultimate limit state of the web plate.(5)Structural members which should be idealized by the plate finite elements can be decided in advance of the analysis by EPASS plus through the diagram in DASt RiO12 to categorize buckling types into plate, column and their interactive ones. Less

(1)A本文将薄壁杆系结构无局部屈曲弹塑性和有限位移分析程序电子通行证与薄壁杆系结构弹塑性和有限位移分析程序USSP相结合，编制了薄壁杆系结构局部屈曲弹塑性和有限位移分析程序EPASS plus。考虑局部屈曲的加筋板钢结构的塑性和有限位移性能。（2）采用电子通行证plus对箱形薄壁截面柱和一跨两层刚架桥墩进行了弹塑性和有限位移分析，分析了在兵库县南部地震中，下部梁构件腹板附近发生局部剪切屈曲的情况。（3）在柱的分析中，电子通行证plus的计算结果与USSP的计算结果略有不同，因为构件板的局部初挠度为n ...更多信息 但在梁柱有限元中理想化的柱端附近部分除外。但由于电子通行证plus的计算结果在实际应用中的误差可以忽略不计，因此，用梁柱单元可以理想化柱端附近的部分。(4)A在板单元理想化的腹板因剪切屈曲而达到极限状态的荷载水平下，现有电子通行证plus不能得到收敛的数值结果，因为腹板屈曲时梁的横截面表现为类似剪切铰的行为。有必要对现有的电子通行证plus进行改进，以便在腹板达到极限状态后仍能对桥墩进行分析。（5）在电子通行证plus分析之前，通过DASt RiO 12中的图表，可以将屈曲类型分为板、柱和它们的相互作用类型，从而确定应该由板有限元理想化的结构构件。少

项目成果

Kitada, T., Nibu, M., Kano, M.and Yamano, T.: "Analysis of Interactive Buskling Strength of Thin-Walled Framed Structures" Proceedimgs of 47th National Congress of Theoretical&Applied Mechanics. 177-178 (1998)

北田T.、二布M.、卡诺M.、山野T.：“薄壁框架结构交互活动强度分析”第47届全国理论大会论文集

Kano,M.,Yamano,T.,Nibu,M.and Kitada,T.: "A Computer Program,USSP,for Analyzing Ultimate Strength of Steel Plated Structures" Proc.of 5th Int.Col.on Stability and Ductility of Steel Structures. 2. 763-770 (1997)

Kano,M.、Yamano,T.、Nibu,M. 和 Kitada,T.：“用于分析钢板结构极限强度的计算机程序，USSP”Proc.of 5th Int.Col.on Stability and Dutyility of Steel

Kitada, T., Nakai, H., Kano, M.and Mizukoshi, M.: "Fundamental Study on Interaction Behavior between Local Buckling and Column Buckling of Thin-Walled Box Cross Section" Proceedings of Annual Conference of Civil Engineers, JSCE Kansai District. I-72-1-2 (

Kitada, T.、Nakai, H.、Kano, M.和Mizukoshi, M.：“薄壁箱形截面局部屈曲与柱屈曲相互作用行为的基础研究”土木工程师年会论文集，JSCE关西

北田俊行・中井 博 狩野正人・水越牧郎: "薄肉箱形断面柱の局部座屈と柱座屈との連成現象に関する基礎的研究" 平成9年度土木学会関西支部年次学術講演会講演概要集. I-72-1-I-72-2 (1997)

Toshiyuki Kitada、Hiroshi Nakai、Masato Kano、Makio Mizukoshi：“薄壁箱形截面柱局部屈曲与柱屈曲耦合现象的基础研究”日本学会关西分会1997年学术年会摘要土木工程师卷 I-72-1-I-72-2 (1997)

北田 俊行・中井 博・狩野 正人・水越 牧郎: "薄肉箱形断面柱の局部座屈と柱座屈との連成現象に関する基礎的研究" 平成9年度土木学会関西支部年次学術講演会講演概要集. I-72-1-I-72-2 (1997)

Toshiyuki Kitada、Hiroshi Nakai、Masato Kano、Makio Mizukoshi：《薄壁箱形截面柱中局部屈曲与柱屈曲耦合现象的基础研究》在日本学会关西分会1997年学术年会上的演讲土木工程师摘要集。I-72-1-I-72-2 (1997)