日本建築学会構造系論文報告集

表紙

原稿種別: 表紙
1989 年 406 巻 p. Cover1-
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_Cover1

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目次

原稿種別: 表紙
1989 年 406 巻 p. Cover2-
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_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応募規程

原稿種別: 付録等
1989 年 406 巻 p. App1-
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_App1

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CONTENTS

原稿種別: 目次
1989 年 406 巻 p. Toc1-
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_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 406 巻 p. App2-
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_App2

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奥付

原稿種別: 付録等
1989 年 406 巻 p. App3-
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_App3

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経年建築物におけるコンクリートの中性化と鉄筋の腐食

和泉意登志, 押田文雄

原稿種別: 本文
1989 年 406 巻 p. 1-12
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_1

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Concrete carbonation and reinforcement corrosion in 95 reinforced concrete buildings were investigated and the various factors and the effects were analyzed. The main results are summarized as follows. 1) The distribution of carbonation depth was close to a normal distribution and the average coefficiant of variation was 40 %. 2) In case of no-finishing, carbonation depth was greater indoors than outdoors, the ratio being 1.7. 3) The influence of finishing materials on carbonation rate was considerable, 4) The distribution of cover thickness of reinforcing steel was close to a normal distribution and the average standard deviation was 15 mm. 5) The steel does not corrode in non-carbonated zone. But when carbonated zone has reached the reinforcement, the steel starts to become corroded. 6) Outdoors, when the crabonated zone reaches a reinforcement, the steel starts to become corroded rapidly, but indoors, even when the carbonated zone has reached the reiaforcement, the corrosion does not occur rapidly, the harmful condition being when the carbonated zone goes beyond the cover thickness by 20 to 30 mm. 7) Finishing materials does not affect on the corrosion of reinforcement. 8) In carbonated zone, the reinforcing steel becomes corroded as cover thickness becomes smaller.

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東京市建築條例学会案から市街地建築物法施行規則に至る立案過程とその特徴 : 構造関連規定の成立過程に関する研究

石川孝重, 平田京子

原稿種別: 本文
1989 年 406 巻 p. 13-23
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_13

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We studied the Draft Bills of Tokyo City Building Ordinance, planned by members of A.I.J. since 1906, and generalized the drafting process and characteristics of these structural regulations. We also studied the Draft Bills of Tokyo Prefecture Building Regulations planned in the Metropolitan Police Department and Dairen City Building Regulations, in the same age. And we considered how each of them influenced the Urban Building Law Enforcement Regulations promulgated in 1919. We point out the results of our study as follows : 1) Dr. Toshikata Sano, who planned these Draft Bills and the Enforcement Regulations, adopted the many earthquake-proof regulations based on his idea in these regulations. 2) Because American companies had brought the mistaken curtain wall system of iron frames, that is enclosure wall system, into Japan, there were a lot of damage in Tokyo by the earthquake in 1923. Dr. Sano planned a provision that prohibited this system in the first Draft Bill of Tokyo City Building Ordinance, but it was deleted later. Therefore we can consider that the above-mentioned damage results from the deletion of the provision. 3) Although Dr. Sano had already published the Seismic Scale, he didn't draft a provision concerning this scale. A provision of wind pressure wasn't adopted into Enforcement Regulations. 4) The Urban Building Law Enforcement Regulations are more similar to the Draft. Bills of Tokyo Prefecture Building Regulations than the one of Tokyo City Building Ordinance. Dairen City Building Regulations were only influenced by the Draft Bills of Tokyo City Building Ordinance.

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鉄筋コンクリート版の衝撃応答に及ぼすひずみ速度効果

山口弘, 藤本一男

原稿種別: 本文
1989 年 406 巻 p. 25-35
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_25

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This paper presents finite element analysis considering strain rate effect of reinforced concrete members subjected to impact loading. An incremental stress-strain relationship for concrete is defined by the tangent elastic moduli considering strain rate effect, i.e., the initial elastic moduli and the maximum stress increase with the strain rate. Cracks are assumed to form when the maximum principal stress in concrete reaches the uniaxial tensile strength considering strain rate effect, and are represented by smeard crack model. The experimental specimens for verification of the analytical model are reinforced concrete slabs under impact loading, which was generated by dropping a hummer. By comparing with the experimental results, the influence of strain rate effect on the dynamic response analysis of reinforced concrete slabs is discussed.

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信頼性理論による鉄筋コンクリート造建築物の耐震安全性に関する研究

中埜良昭, 岡田恒男

原稿種別: 本文
1989 年 406 巻 p. 37-43
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_37

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It is of great importance to assess the seismic risk of existing buildings located in a high seismic region to avoid destructive damages due to severe earthquakes. It is, therefore, necessary to estimate the seismic capacity of structures and strengthen them if required. It is also well recognized, however, that the structural safety may be rarely evaluated with certainty due to uncertainties of ground motion, ultimate strength and ductility of structures, and earthquake response etc, and should be regarded probabilistically rather than deterministically. This paper describes 1) the seismic capacity of buildings damaged due to recent severe earthquakes in Japan, 2) the seismic capacity of existing buildings both before and after strengthening, 3) the relationship between the decision criteria and the seismic capacity of damaged and existing buildings, and 4) applicability of probabilistic approach to estimate the earthquake damage ratio and effects by strengthening.

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汎関数型有限変形非線形粘弾性体構成則(梗概)

和泉正哲, 栗田哲, 高橋徹, 薛松涛

原稿種別: 本文
1989 年 406 巻 p. 45-54
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_45

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偏心構造物のパルス応答解析 : 区間線形近似モード分離応答解析法(I)

山田稔, 河村廣, 谷明勲, 亜洲

原稿種別: 本文
1989 年 406 巻 p. 55-68
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_55

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In order to make clear the ultimate states of structures under earth-quake excitations, approximate analysis methods, which are named as FINITE RESONANCE RESPONSE ANALYSIS (FRRA) and PULSE RE SPONSE ANALYSIS (Velocity Pulse Response Analysis : VPRA, and Acceleration Pulse Response Analysis : APRA), have been proposed by the authors. The former is used for estimating the cyclic responses (the cyclic displacement amplitude and the absorbed energy) of the structures subjected to a cyclic excitation, and the latter is used for evaluating the monotonic responses (the maximum monotonic displacements and deformation energy) of the structures subjected to an impulsive excitation. In this paper, the fundamental procedure of the PULSE RESPONSE ANALYSIS method is used, and an approximate analysis approach for the coupled asymmetrical structures is proposed. The main contents of the approach are described as follows : 1) By integrating the equation of motion of asymmetrical structures in the X, Y and θ directions respectively, a relationship of the amplitudes (velocity and acceleration in the X, Y and θ directions) and the duration of the impulsive excitations is obtained. And the relationship may be shown as a curve in a 4-dimensional coordinates in which the coordinate-axes represent the amplitudes of 3 directions and the duration of the excitation, and the curve is defined as the Pulse Spectrum-Curve for the torsionally coupled systems. 2) The Excitations of the analysis for the asymmetric structures subjected to the impulsive excitations in multi-directions are idealized as a Spectrum-Surface in the same 4-dimensional coordinates as the one which the Pulse Spectrum-Curve is shown in. 3) Then, the analysis process may be concluded as how to find the point of contact of the Pulse Spectrum-Curve and the Excitation Spectrum-Surface. The responses at the point are considered as the result of the Pulse Response Analysis. 4) For developing the process, the resistant force-deformation relation of the structure is approximately divided and linearized in some small sections, and the elastic response analysis is applied in each section. As the result of combination of the elastic analysis processes in all the sections divided, the vibration mode-separating responses are obtained. To verify the analysis approach proposed in this paper, an example of earthquake response analysis for a mono-eccentrical structure subjected to an unidirectional impulsive excitation is performed. The results are compared with those obtained by a numerical integration analysis, and confirmed good coincidence between them.

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斜杭および斜め土圧を考慮した砂地盤における杭の受働土圧に関する実験的研究

国府田誠, 山下利夫, 佐藤秀人, 榎並昭

原稿種別: 本文
1989 年 406 巻 p. 69-79
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_69

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水平力を受ける壁杭の挙動について : 壁抗の水平抵抗に関する研究(その1)

茶谷文雄

原稿種別: 本文
1989 年 406 巻 p. 81-92
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_81

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Reinforced concrete slurry walls are often constructed as pile foundations. Lateral resistance of piles with rectangular section like this is discussed in this paper. Lateral loading field tests were performed in the directions of short and long axes of full-scale piles in sand and large-scale model piles in Kanto Loam. The followings were clarified from these test results and analyses. (1) The lateral resistance of this pile is larger in the direction of long axe than in that of short axe. That difference of lateral resistance in both directions tends to increase, as the ratio of the long side to the short side of its section increases. (2) When lateral load is applied to the direction of short axe, the main horizontal subgrade reaction is passive resistance. On the other hand, when the load is applied to the direction of long axe, the main subgrade reactions are frictional resistance which acts along both sides of the pile, and passive resistance which acts in front of the pile. (3) If the adequate coefficients of horizontal subgrade reaction are adopted, these piles can be analysed as beams resting on elastic subgrades in both directions.

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有限要素法による鋼構造部材構成板要素の火災時の力学性状に関する解析法

金子洋文

原稿種別: 本文
1989 年 406 巻 p. 93-102
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_93

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This paper presented the analytical method for understanding the mechanical behavior of the plate elements composing steel structural members under fire conditions. The characteristics at high temperature were introduced into the stiffness matrix and nodal forces in the analytical method at normal temperature based on the finite element method by using the models as a function of temperature or time. The validity of the analytical method was examined by the accuracy of the traces to the material characteristic models and by the experimental results. Consequently it was shown that the analytical method can pursue the real behavior under fire conditions.

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フーリエ級数を用いた耐震壁のマトリックス構造解析

山川哲雄

原稿種別: 本文
1989 年 406 巻 p. 103-111
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_103

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It is difficult to analyze complex structures using the general solutions of the differential equations of the structural elements, where the constants of integration are determined from the boundary conditions, the equilibrium equations, and so on. On the other hand, the matrix displacement method has been widely used in the analyses of frame structures and continua, owing to the development of digital computers. In this paper, the stiffness matrices which express the relation between stresses and displacements along the edges of a plane stress rectangular element and beam are formulated by expanding the complementary solutions in Fourier series. The numerical results of a one-bay one-story framed shear wall given by using matrix displacement method agree well with the general solutions expressed in Fourier series. The proposed method is considered to be the generalization for the analytical method based upon the differential equations.

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計画系論文報告集目次 No.406 1989・12

原稿種別: 付録等
1989 年 406 巻 p. App4-
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_App4

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裏表紙

原稿種別: 表紙
1989 年 406 巻 p. Cover3-
発行日: 1989/12/15
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.406.0_Cover3

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