日本建築学会構造系論文報告集

表紙

原稿種別: 表紙
1989 年 405 巻 p. Cover1-
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_Cover1

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目次

原稿種別: 表紙
1989 年 405 巻 p. Cover2-
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_Cover2

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日本建築学会構造系論文報告集ならびに日本建築学会計画系論文報告集募集規程

原稿種別: 付録等
1989 年 405 巻 p. App1-
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_App1

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CONTENTS

原稿種別: 目次
1989 年 405 巻 p. Toc1-
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_Toc1

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「日本建築学会構造系論文報告集ならびに日本建築学会計画系論文報告集」論文募集

原稿種別: 付録等
1989 年 405 巻 p. App2-
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_App2

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奥付

原稿種別: 付録等
1989 年 405 巻 p. App3-
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_App3

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我が国における気温補正結露マップの提案 : 高分子系建築材料の耐久性に関する研究(その3)

冨板崇, 樫野紀元

原稿種別: 本文
1989 年 405 巻 p. 1-7
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_1

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The moisture degradation of polymeric building materials is accelerated when temperature increases. Hydrolysis of base polymer or solution of anti-degradation agents are some of chemical reactions activated by temperature under dew cycle condition. In this paper authors present temperature modified wetness time and wet-dry cycle map introducing accelerating factors based on Arrhenius' equation. The active energy was calculated numerically according to empirical rule, in which the rate of degradation is doubled by 10 deg C of temperature increace. The degradation amount of materials can be estimated quantitively using these indexes.

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乾燥コンクリートの温度上昇時の膨張ひずみ拘束応力と応力緩和

河辺伸二, 岡島達雄

原稿種別: 本文
1989 年 405 巻 p. 9-18
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_9

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The purpose of this study is to predict the stress of concrete for heating under constant strain. The free thermal expansion of concrete were measured for heating from 20℃ to 100℃. The stress relaxations were measured for five hours at the constant temperature of 20℃, 60℃, and 100℃. The initial stress levels of the stress relaxations were 1/6, 2/6, 3/6 and 4/6 of compressive strength. The concrete specimens were heated from 30℃ to 100℃, and the stress were measured under constant strain. The conclusion is the following ; For equal levels of initial stress, stress relaxation increases with temperature of concrete, within the limits of this experiment. As the initial stress level in concrete is increased, the stress relaxation also increases. The stress of concrete for heating under constant strain, could be predicted from the free thermal expansion and from stress relaxation.

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高強度鉄筋SD50の重ね継手に関する実験的研究

田中礼治, 但木幸男, 大芳賀義喜

原稿種別: 本文
1989 年 405 巻 p. 19-29
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_19

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Although Grade SD 50 high strength reinforceing bar has been already standardized by JIS (Japanese industrial standard), it has not yet been applied in the actual buildings. However, recently, along with the development of high-strength concrete, there has been a drift toward using Grade SD 50 bars. When Grade SD 50 bars are used practically, the joints of reinforcements are required. Although there are many methods for the joints of reinforcements, the lap splices are studied in this paper. Many experimental studies on lap splices have been reported. Most of them have been carried out on the reinforcement with strength between Grade SD 30 and SD 40. Few tests on lap splices of Grade SD 50 have been reported. The object of this paper is to obtain the test data (strength, stifness and ductility) with regard to lap splices of Grade SD 50 bars. The simply supported beams loaded with two concentrated loads were used for test. The lap splices were located at the pure bending portion in the beams. Although there are many effective factors for the behavior of lap splices, the effect of the length of lap splices of hooks, and of space in contact lap splices are studied in this paper.

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荷重の確率過程の組み合わせにおける超過確率の理論解とその応用に関する考察

河野守, 坂本順, 青木和雄

原稿種別: 本文
1989 年 405 巻 p. 31-41
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_31

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An application of probability method to advanced structural design is the treatment of load combination as well as probabilistic modeling of individual loads. Most loads acting on structures are stochastic in nature, and they can be modeled as stochastic processes to account for randomness in time ; i. e. stochastic nature of occurrence, duration and intensity of the loads and combined load actions. Probability method can be utilized to determination of load factors to satisfy the design criteria that reflect stochastic nature of the loads in a rational maner. This paper presents an analytical procedure and solutions of exceedance probability of a threshold being exceeded in a reference period for combinations of a specific class of stochastic process models ; i. e. , Poisson square wave process, rectangular process, intermittent rectangular process and Poisson impulse process. The solutions of exceedance probability provide applicability to practical structural design problems. An application of the solutions to determination of the load factors for use in limit state design is described with numerical examples.

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根入れ基礎をもつ構造物の振動特性について(3)

小堀鐸二, 立川剛, 宿里勝信

原稿種別: 本文
1989 年 405 巻 p. 43-50
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_43

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This paper describes a theoretical study concerning soil-structures dynamical interaction problems in the case of structures embedded in water saturated soil ground. The theoretical analysis is performed on basis of the two-dimensional wave propagation theory. In this paper are derived the set of govering equations of soil-structure interaction system subjected to base rock excitation and the analytical expression for the sway and the rotation spring constants of sub-side soil ground when the basement wall vibrates horizontally.

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デジタル微分解析器とデジタル制御型機械式加力装置を用いた多自由度振動系のオンライン地震応答載荷実験 : 第2報多層せん断型架構への拡張

西澤英和, 江口直, 金多潔

原稿種別: 本文
1989 年 405 巻 p. 51-61
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_51

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In this paper, the authors have presented a generalized method for solving a non-linear response of multi-degrees of freedom structure based on a newly developted ON-LINE simulation system, which is composed of digital actuators and a digital differential analyzer. In order to examine the efficiency of this system, a series of on-line experiments have been conducted using a two and a three-storied steel building model. The test results have shown that the response obtained by the proposed technique agrees fairly well with a numerical analysis using a simple elasto-plastic hysteretic model.

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弾塑性地震応答解析法とそのシミュレーション解析 : 柱の変動軸力を考慮したRC造骨組の弾塑性解析(その3)

磯崎浩, 福澤栄治, 藤崎浩治

原稿種別: 本文
1989 年 405 巻 p. 63-72
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_63

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This paper presents the rigorous elastic-plastic earthquake response analytical method considering the fluctuation of axial force on columns, which has been newly developed for the highrise reinforced concrete (R/C) frame. The new feature of the proposed method is as follows. Regarding columns, two surfaces of crack and yield are introduced on the force plane of bending moment and axial force (M-N plane) at the ends of columns and the degrading trilinear hysteresis loop proposed by Dr.MUTO is extended to the M-N plane and is formulated, against earthquake repeated loads. From the results of the simulation analyses of the structural tests on the columns with core rebars and the elastic-plastic earthquake response analysis of a 30 story R/C frame against hypothetically worst earthquake, the adequacy of this analytical method is verifed. Theforce, it is confirmed that this proposed method is very useful in the earthquake resistant design of the highrise R/C building.

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アイソパラメトリックMindlin板曲げ要素に関する研究 : (その1)9節点要素

近藤一夫, 光広文彦, 花井正実

原稿種別: 本文
1989 年 405 巻 p. 73-87
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_73

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An improved displacement finite element method for shear-deformable plate bending element is developed and applied to a 9-node, 27-degree-of-freedom quadrilateral element. Based on the concept of the so-called Kirchhoff-mode criterion, two rotations : (θ_x, θ_y) and a deflection : w are assumed to be quadratic and cubic, respectively, wherein additional internal variables are employed for the latter with the ordinary nodal displacement parameters. In the numerical energy integration method, the Lobatto's formula, which has integration points on the corners and mid-sides as well as the center of the element, is adopted instead of the Gauss-Ledendre's often used in the finite element analyses. It is shown that the present element has no spurious zero energy modes and hardly locks. Also, the continuity on inter-elements and the completeness of shape functions are, with the accuracy of the employed integration formula, particularly examined in order to see the covergence aspect. Several numerical experiments are performed and show that the present element gives excellent results for both thin and thick plates.

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弾性基礎(Winkler基礎)上の円板の解析解

山川哲雄

原稿種別: 本文
1989 年 405 巻 p. 89-96
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_89

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Both problems of bending considering transverse shear deformation and plane stress of circular plates on elastic foundation are discussed in this paper. The elastic foundation is assumed to be Winkler type. General solutions of the differential equations which govern these problems are presented as analytical solutions of the circular plates on elastic foundation under axi-symmetric and non-symmetric loading conditions. The well-known theory of Reissner is applied to the problems of bending considering transverse shear deformation. These presented solutions are formulated closed forms. They consist of the modified Bessel functions of the first kind of order n and so forth. It is very important to adopt displacement functions in order to obtain the analytical solutions for both problems of bending considering transverse shear deformation and plane stress of the circular plates on elastic foundation under non-symmetric loading conditions.

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ホモロガス変形を制約条件とする立体トラス構造の形態解析

半谷裕彦, 〓富玲

原稿種別: 本文
1989 年 405 巻 p. 97-102
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_97

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This paper deals with a structural shape analysis with the constraint conditions of homologous deformation. The homologous deformation is defined as "the deformation of a structure shall be called homologous if a given geometric relation holds, for a given number of structural points, before, during and after the deformation". In the first part of the paper, all nodal points are divided into three categories : nodal points representing the homologous deformation (degrees of freedom = k), the shape change (degrees of freedom = f) and the fixed boundary, respectively. Then, the basic equations with the n×m coefficient matrix are introduced for any truss structures, giving a homologous parameter, where n = h + f and m = 1 + f, in the second part, the existence condition of solution for the derived basic equations is given by the use of the generalized inverse. This condition is a set of nonlinear equations with unknowns of nodal coordinates, and is numerically analyzed by Newton-Raphson method in order to find out the final shape. In the final part, an illustrative example is numerically analyzed in order to examine the validity of the present method.

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埋戻し土を考慮した円筒剛基礎の動的応答特性

吉田長行, 藤井大地, 藤谷義信

原稿種別: 本文
1989 年 405 巻 p. 103-113
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_103

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The effect of the backfilled soil on the dynamic response property of the foundation is investigated. For this purpose the new analytical method is also presented. The outer domain of a soil is analyzed by the indirect boundary integral equation method in the thin layered soil model which has been developed by authors. The inner domain which contains an irregular soft soil is discretized using the axi-symmetric isoparametric finite elements. Combining equations for the total domain are obtained by applying the principle of virtual displacements to the stiffness equation of the outer domain. The three types of the foundation are chosen as analytical models. The first is rested on the elastic base through a surface stratum. The second and third are floating in the homogeneous half space soil and the upper layer of the two layered soil respectively. The results obtained by numerical analyses are as follows. 1) The rigidly backfilled soil reduces the maximum response of the superstructure within the natural period of 0.3 or 0.4 second. Conversely the softly backfilled soil is usefull for the structure with the natural period of longer than it. 2) The maximum response of the foundation bonded to the elastic base becomes lower in a soft backfill rather than a rigid one.

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柱梁接合部のせん断変形を考慮した耐震壁のフーリエ弾性解析とその総括

山川哲雄

原稿種別: 本文
1989 年 405 巻 p. 115-124
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_115

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The objectives of this study are to develop the elastic analysis of the framed shear walls by considering shear deformation of the beam-to-column connections, to investigate its effects on stresses and displacements of the framed shear walls in detail, and to discuss past studies on the elastic analysis of the framed shear walls in Fourier series. The plane stress analysis of the framed shear walls with symmetric cross sections was developed originally by Tsuboi in 1951. The elastic analysis of the framed shear wall subjected to the antisymmetric loads was carried out by using Airy's stress function in the wall panel and the elementary beam theory in the boundary frame. Tomii et al. assumed the beam-to-column connections as rigid bodies and introduced the shear deformation of the boundary frame in the elastic analysis of the framed shear walls. The following conclusions are obtained from this study. i) In calculating angular distortions of the framed shear walls, the shear deformation of the beam-to-column connections can be ignored. Also, the effects of those shear deformations on the stresses and displacements of the framed shear walls are very small. Therefore, the assumption of rigid body can be applied to the beam-to-column connections. ii) Shearing stresses per unit length on intermediate members of the continued framed shear walls are nearly equal to the mean shearing stresses per unit length on framed shear walls. iii) It may be recognized that the elastic analysis of the framed shear walls in Fourier series was established by Tomii and Hiraishi in 1976. It is important to take into consideration the shear deformations of beams and columns in order to introduce the pure shear deformation of the wall panel and satisfy the continuity condition of the deflections on the boundary between wall panel and frame.

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計画系論文報告集目次 No.405 1989・11

原稿種別: 付録等
1989 年 405 巻 p. App4-
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_App4

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裏表紙

原稿種別: 表紙
1989 年 405 巻 p. Cover3-
発行日: 1989/11/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.405.0_Cover3

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