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For the analysis of nonlinear problems, the stress-strain curves of concrete and steel and the load-slip curve of a shear connector are simply assumed by bilinear functions. The iterative initial strain method is employed in the nonlinear analysis. The numerical results are compared with the other test results and the computational values based on other numerical methods, and found to be in good agreement.\u003cbr/\u003eThe effective width of composite beams with incomplete interaction is proposed in Chapter 3. The models of the composite beams proposed herein are as follows; (1) a composite T-section. (2) a composite section with a number of equally spaced steel section connected to the concrete slab. (3) a composite \u03c0-section under a symmetric loading. (4) a composite \u03c0-section under an antisymmetric loading. 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  1. 学位論文
  2. 博士論文
  3. 理工学研究科(工学系)
  1. 部局別インデックス
  2. 理工学研究科

不完全合成桁の挙動に関する研究

http://hdl.handle.net/20.500.12000/14311
http://hdl.handle.net/20.500.12000/14311
02b7c4e0-84d6-4689-b445-4ba117d856c9
名前 / ファイル ライセンス アクション
Arizumi_Yasunori-5.pdf Arizumi_Yasunori-5.pdf
Arizumi_Yasunori-4.pdf Arizumi_Yasunori-4.pdf
Arizumi_Yasunori-3.pdf Arizumi_Yasunori-3.pdf
Arizumi_Yasunori-2.pdf Arizumi_Yasunori-2.pdf
Arizumi_Yasunori-1.pdf Arizumi_Yasunori-1.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2021-12-15
タイトル
タイトル 不完全合成桁の挙動に関する研究
言語 ja
作成者 有住, 康則

× 有住, 康則

ja 有住, 康則

Arizumi, Yasunori

× Arizumi, Yasunori

en Arizumi, Yasunori

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Other
内容記述 報告番号(乙第2671号)
内容記述タイプ Other
内容記述 Steel-concrete composite beams are structural elements of practical importance in building and bridge structures. This thesis presents the theoretical and experimental studies on behavior of composite beams with incomplete interaction, partial composite beams and curved composite girders. The contents of this study consist of 6 main investigative themes as described below.<br/> The elastic and elastic-plastic analysis of composite beams with incomplete interaction is proposed in Chapter 2. A composite beam element with an assembly of beam elements for concrete slab and steel beam and a spring element for shear connectors is used in the present analysis, which reduces the number of equations considerably. Cubic polynomials are herein used as the shape functions for not only bending but also axial deformations of the beams, since they represent results from complicated deformations in the composite beams. This composite element is applied to the analysis of continuous composite beams and the elastic-plastic analysis of composite beams with incomplete interaction. For the analysis of nonlinear problems, the stress-strain curves of concrete and steel and the load-slip curve of a shear connector are simply assumed by bilinear functions. The iterative initial strain method is employed in the nonlinear analysis. The numerical results are compared with the other test results and the computational values based on other numerical methods, and found to be in good agreement.<br/>The effective width of composite beams with incomplete interaction is proposed in Chapter 3. The models of the composite beams proposed herein are as follows; (1) a composite T-section. (2) a composite section with a number of equally spaced steel section connected to the concrete slab. (3) a composite π-section under a symmetric loading. (4) a composite π-section under an antisymmetric loading. The constitutive equations which relate the effective width of composite beams with incomplete interaction are formulated by the Airy's stress function and solved by series solutions. Stresses evaluated by the proposed method are compared with those obtained from the finite prism and the finite strip method, where the finite prism and the finite strip are applied to the concrete slab and the steel beam, respectively, and the comparison shows good agreement. The effective width ratios of composite beams with various shear connector modulus under a uniformly distributed load and a concentrated load at the mid-span is presented.<br/>Chapter 4 aims to provide some informations on static and fatigue behavior of complete and partial composite beams under negative bending. Six composite beams were statically tested and seven were tested under repeated loading. The beams were tested as "upside down" to create the conditions of negative bending. Special emphasis is given to bending stiffness, efficiency of reinforcing bars, crack pattern, crack width and failure mode.
内容記述タイプ Other
内容記述 A simplified method for the calculation of stresses and deflections of partial composite beams under negative bending is proposed in Chapter 5. A moment diagram near intermediate supports of a continuous beam under a concentrated load and/or a uniformly distributed load is able to simulate to a simply supported beam under a concentrated load at the mid-span. In the present study, an idealized moment diagram of a cantilever beam is used for the negative moment region. The results evaluated from the simplified method are compared with the test results and those obtained from the finite element method.<br/>Chapter 6 presents the formulations for the finite strip analysis of curved composite girders with incomplete interaction. The curved composite girders are modelled by curved strip elements for concrete slab and steel girder and spring elements for shear connectors. The shear connectors are assumed as a two-dimensional spring element along a nodal line.<br/>The elastic behavior of curved composite box girders is discussed in Chapter 7. Three curved composite box girders were tested in order to provide additional informations related to the bending behavior of curved composite box girders. Test specimens were fabricated where different radii, cross sections and placements of shear connectors are considered. Test results are compared with computational values based on the finite strip method shown in Chapter 6, and they are in good agreement.
内容記述タイプ Other
内容記述 学位論文
出版者
言語 ja
出版者 有住康則
言語
言語 jpn
資源タイプ
資源タイプ doctoral thesis
資源タイプ識別子 http://purl.org/coar/resource_type/c_db06
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/14311
識別子タイプ HDL
収録物識別子
収録物識別子タイプ NCID
収録物識別子 BA81931049
学位名
学位名 工学博士
言語 ja
学位授与年月日
学位授与年月日 1984-07-27
学位授与機関
学位授与機関名
学位授与機関名 名古屋大学
言語 ja
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