日本建築学会構造系論文報告集

表紙

原稿種別: 表紙
1985 年 352 巻 p. Cover1-
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_Cover1

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目次

原稿種別: 表紙
1985 年 352 巻 p. Cover2-
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_Cover2

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CONTENTS

原稿種別: 目次
1985 年 352 巻 p. Toc1-
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_Toc1

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奥付

原稿種別: 付録等
1985 年 352 巻 p. App1-
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_App1

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労働災害発生系列の均質性に関する研究

花安繁郎

原稿種別: 本文
1985 年 352 巻 p. 1-9
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_1

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コンクリート強度に関する確率破壊モデルの適用性とその定量化

小阪義夫, 谷川恭雄, 山田和夫

原稿種別: 本文
1985 年 352 巻 p. 10-21
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_10

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In this paper, the comparisons of theoretical predictions with experimental results on the statistical distributions of concrete strength are carried out by using the improved stochastic model for concrete strength. Main results of the present study are summarized as follows: 1) The theoretical predictions on the statistical distributions, size effects and loading rate effects of concrete strength are in good agreement with experimental results over a wide range. 2) The shape of statistical distribution of concrete strength is closely related to the processes of stable crack accumulation and unstable crack propagation. The values of parameters related to the stable crack accumulation (L_2/L_1) and unstable crack propagation (L_u) can be expressed by Eqs. (2), (3) and Eqs. (4), (5), respectively. 3) Considering the effect of geometrical heterogeneity on the fracture process of concrete system, the size effect in strength of heterogeneous material such as concrete can be theoretically explained by Eq. (11).

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ホワイトノイズを受ける多自由度系の累積塑性変形

洪起

原稿種別: 本文
1985 年 352 巻 p. 22-28
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_22

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This paper describes an analytical method to estimate the statistical values of cumulative plastic deformation ratios under the condition of optimum distribution shear coefficients for multi-degree of freedom systems subjected to white noise.

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合成ばり端部鉄骨フランジのひずみ性状に関する数値解析的研究その1 : ハイブリッド型応力法に基づく合成ばりの解析法について

松尾彰, 椋代仁朗

原稿種別: 本文
1985 年 352 巻 p. 29-36
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_29

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In this paper two numerical methods for analyzing a composite beam are proposed, which are based on the hybrid stress model. One assumes changeable effective width of concrete slab. The other assumes two dimensional stress distribution in a concrete slab. Both considers interface slip between top flange of a steel beam and a concrete slab. And these numerical methods are applied to predict the plastic behavior of two composite beams (CB 5-D, CB 5-DV) whose experimental results are reported by Dr. Igarashi et. al. (13)

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傘形H.P.殻屋根構造物の解析

松永裕之

原稿種別: 本文
1985 年 352 巻 p. 37-48
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_37

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Since the boundary conditions along edge beams or at supporting points which must be simulated precisely in the analysis of realistic roof shell structures are very complex, mechanical behaviors of such structures have not been clarified well as yet. This paper presents numerical results to clarify the mechanical characteristics of an umbrella-shaped roof structure consisting of four hyperbolic paraboloidal shells and also some useful data to design such a structure. Based on the linear Donnell-Mushtari-Vlasov equations under the shallowness approximation that 1≫(l/c)^2, the equations of realistic boundary conditions along edge beams and also at supporting points are derived through the principle of virtual work. A set of the basic equations of equilibrium for a shell and the consistent expressions of boundary conditions for supporting structures is expressed in terms of three displacement components of the shell surface. In solving the boundary-value problems, the higher order finite difference operators with error terms of 0 (h^4) are applied to insure the numerical accuracies within small number of unknowns. The convergence properties of the numerical solutions have been shown to be accurate for the displacement components with respect to the number of mesh intervals. Another proof on the accuracy of the numerical results has been made by comparing the magnitude of the internal work in the structure with that of the external work. On the basis of the numerical results which are verified to be accurate enough, effects of shell rises and various boundary constraints are discussed in detail.

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複数の局部重量をもつ円筒シェル模型の振動台実験とその解析

本橋章平, 武藤清

原稿種別: 本文
1985 年 352 巻 p. 49-56
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_49

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PURPOSE Authors have already reported an analytical method to calculate the dynamic behavior of axisymmetric shell structures with locally attached masses such as a steel containment vessel of nuclear power plants (Transactions of the A.I.J. No.338 April 1984). In this paper, the feasibility of the above analytical method is discussed through the simulation analysis to shaking table tests of a cylinder model which has locally several attached masses. VIBRATION TEST The test specimen is a steel cylinder attached thirteen concentrated masses (pressure-gage instruments and hanging hooks), and is fixed on the shaking table, to which the sinusoidal waves (1Hz〜70Hz) are input. As the test results, several resonant vibration modes are obtained including a beam type and some ovaling modes. The same test is also conducted in case of an additional weight attached to the mid-height of the cylinder. And a beam type and some ovaling modes are also obtained, but it's resonant peaks and frequencies are moved from the former ones. SIMULATION ANALYSIS At first, the axisymmetric free vibration modes are calculated by the finite element model without local masses. And next, the composit free vibration modes of the shell with local masses are obtained by Lagrange's equation superposing the above axisymmeteric modes. Finally, the forced vibration analysis is conducted by the mode superposition method using these modes. RESULT The analytical results show good agreement with the test results in respect of the resonant characteristics of the specimen for each case of the tests. Especially, the difference between two cases of the tests could be well followed by the analyses here.

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プレキャスト鉄筋コンクリート構造接合部耐力についての基礎的研究 : 鉛直荷重を受ける圧縮接合の弾性応力分布と耐力

河村博之

原稿種別: 本文
1985 年 352 巻 p. 57-67
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_57

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Many joints to transmit vertical loads have been used in reinforced concrete pre-cast structure as slabs and beams laid over bearing walls or brackets clinging to them. Many of these compressive joints support vertical loads in only the partial area of the concrete surface, so it is neccessary to know the bearing capacity in such cases and to design these joints securely. Though various reports have been given on the compressive strength of concrete inflicted with the partial load for the purpose of the pre-stressed concrete anchor or the diagnosis of concrete durability, it is not clear that we can apply these data to those pre-cast joints because the shapes of the concrete members supporting the partial loads and the acting locations in them are different from these investigated specimens. So we have classified into the following four types by the way of adding forces and shapes; that is a) the partial compression at the edge b) the compression on the eccentric belt c) the compression of the cut shape d) the compression of the bench type as Fig.1 and have tried the destruction experiments on the bearing capacities of these joints. At the same time, we have made the elastic stress analysis by the finite element methods. In the present report, we have described the experimental results of the bearing capacity of walls inflicted with the partial load about the effects exerted by the magnitudes of specimens upon their endurances and further in the types of the partial compression at the edge and the compression on the eccentric belt, the maximum value of 「criterion ratio stress of destruction」 in the τ or σ_2+φ direction as in Fig.17(a) having taken a certain value and in the types of other cases, the destructive cracks having occured towards the principal stresse σ_2 and having existed an obvious certain relation between the apparent plastic sphere γ_t as in Fig.15 and its criterion ratio stress slope on the surface of destruction as in Fig.18 of this article. Lastly we will offere by using these relation, the method of estimating the strength in the partial compression of the conplicated shape from the elastic stress distribution along the assumed broken line.

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鉄筋コンクリート造柱はり接合部補強法に関する実験的研究 : その1 はり主筋の接合部からの抜け出しとはり端塑性ヒンヂの変形機構について

多田利正, 武田寿一

原稿種別: 本文
1985 年 352 巻 p. 68-78
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_68

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Ten reinforced concrete beam-column joint specimens subjected to repeated reversible seismic loading were studied. The parameter of this test is various reinforcement devices in joint panels for improving earthquake-resistant capacity. For example, in one specimen, longitudinal bars of beams going through the joint were welded to stirrups set in the joint, while in another specimen, longitudinal bars of beams in the portion of column width were subjected to induction heat-treatment to prevent yielding. Another parameter is column width, load-deflection characeristics, energy-absorbing capacities and pullout of beam reinforcement from joint were compared. Further, deformation mechanism of beam end hinges was studied.

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角形鋼管柱・H形はり接合部の局部耐力推定式 : 角形鋼管柱溶接接合部の実験的研究2

田渕基嗣, 金谷弘, 上場輝康

原稿種別: 本文
1985 年 352 巻 p. 79-89
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_79

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The paper examines the local failure of welded RHS-column to H-beam connections with exterior diaphragm in rigid steel frames. Based on a number of simplified model test results reported in the previous paper (Ref. 1), the empirical formulae predicting the local strength of connections are derived by the dimensional analysis and the regression analysis. The empirical formulae obtained here are as follows : For the maximum load, [numerical formula]…(4) For the yield load, P_<cy>=0.58 P_<cmax>…(5) The limits of application are : B/T=22〜67, h_D/B≦0.2, t/T=0.75〜2.0 The proposed formulae are applicable to the following connections. 1) Connections fabricated by high strength steel grade SM 50 A or SM 58 Q. 2) Connections stiffened by triangular plates. 3) Connections subjected to tension or compression load on one side only. The strength of actual RHS-column to H-beam connections are predicted by the proposed formulae with sufficient accuracy by substituting Pc for M/(d-t). For RHS fabricated by four steel plates, the proposed formulae overestimate the strength of the connections by 20%.

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切欠付平板の破壊挙動に関する数値解析 : 欠陥を有する溶接接合部の破壊挙動に関する研究その2

小野徹郎, 中川進一郎, 鈴木孝彦

原稿種別: 本文
1985 年 352 巻 p. 90-97
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_90

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In previous paper, tensile tests of notched plates were carried out. The COD and the overall strain ε_∞ were measured, and the critical values of the COD were determined. The purpose of this paper is to evaluate the deformation capacity and the fracture behavior of notched plates by numerical analysis. The two-dimensional elasto-plastic analysis using the finite element method considering the effects of crack growth and plate thickness is devised. The COD and the J-integral based on the non-linear fracture mechanics are calculated, and further the relationships between the COD, the J-integral and the overall strain ε_∞ are investigated.

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SI単位の換算率表

原稿種別: 付録等
1985 年 352 巻 p. App2-
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_App2

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裏表紙

原稿種別: 表紙
1985 年 352 巻 p. Cover3-
発行日: 1985/06/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.352.0_Cover3

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