日本建築学会構造系論文報告集

表紙

原稿種別: 表紙
1987 年 380 巻 p. Cover1-
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_Cover1

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目次

原稿種別: 表紙
1987 年 380 巻 p. Cover2-
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_Cover2

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CONTENTS

原稿種別: 目次
1987 年 380 巻 p. Toc1-
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_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
1987 年 380 巻 p. App1-
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_App1

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奥付

原稿種別: 付録等
1987 年 380 巻 p. App2-
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_App2

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石膏セメントコンポジットを超速硬性の結合材に使うための凝結調節剤に関する研究

平居孝之, 平山善吉, 村上聖, 岸谷孝一

原稿種別: 本文
1987 年 380 巻 p. 1-9
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_1

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In the preliminary study, the property of gypsum cement composite is investigated to use as a binder. The mixture of a type gypsum hemihydrate and normal portland cement, containing normal portland cement proportioning 20 % by weight, makes a good composite system in which hardened crystal gypsum is fully covered by cement hydration products. The composite system improves its water resistant property remarkably, and makes the most of preferable properties of gypsum for building materials. Some experiment are carried out to find out a retarder for the composite system, on which setting time is exceedingly short without retarder and is susceptibly influenced by the temperature of mix condition. In several chemicals, citric acid and starch have efficacy to retard the setting time but their actions are quite different. As the temperature of mixture increases, the setting time becomes shorter by citric acid, and becomes longer by starch. Then a combination method, adding citric acid and starch together in mixture, is examined to control the setting time independent of the change of temperature. A certain amount of citric acid and starch, which can retard the setting time about 1 hour constantly under different temperature, is considered as the most preferable combination method. By the combination method, the mixture with water binder ratio of 30 % has good consistency, and its hardened specimen in 3 hours after mixing with water indicates high strength near 300 kgf/cm^2.

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構造目地を有する鉄筋コンクリート造腰壁付き骨組の力学的特性に関する研究 : そのI-腰壁付きはり・柱十字形骨組の加力実験について

大久保全陸, 塩屋晋一

原稿種別: 本文
1987 年 380 巻 p. 10-21
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_10

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Non-structural concrete spandrels have often been used in reinforced concrete buildings because of a building design, construction cost, and performance of exterior walls. However, it is apparent from many earthquake experiences and such simulation tests that the concrete spandrels were not simply non-structural members but they greatly influence the failure modes and the behavior of the frame during an earthquake. Recently, a procedure of structural design and construction, which aims to reduce the undesirable effects of spandrels to frames by adopting the joint details, so-called "Structural Slit" where the spandrel is made partially and extremely thin, are studied and used in an actual structural design. This report is one of the studies on Structural Slit. The spandrel-beam-column subassemblages with different types of Structural Slits are tested under lateral load reversals in order to investigate the influence of the shape and the dimension of the Structural Slit on the strength and the behavior of a reinforced concrete frame.

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立体架構の動的ねじれ連成挙動に関する考察

坂本順, 小浜芳朗, 渡辺雅生, 辻井孝

原稿種別: 本文
1987 年 380 巻 p. 22-31
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_22

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The paper describes lateral-torsional responses of buildings to earthquake ground motions, being an emphasis placed on the seismic torsional load effect and its semi-analytical expressions. In this paper, three dynamic eccentricity parameters, defined by coupled maximum responses, mean square responses and energy responses quantilies of the buildings, are presented with simple formulae. Simulation studies are made on single-story and shear-type multi-story buildings.

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鉄筋コンクリート造実大7層建物の振動特性および動的応答解析 : 日米共同耐震実験研究

北川良和, 緑川光正

原稿種別: 本文
1987 年 380 巻 p. 32-44
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_32

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軸方向変形の拘束効果を考慮した鉄筋コンクリートはりの弾塑性性状に関する実験研究

坂田弘安, 林静雄, 和田章, 黒正清治

原稿種別: 本文
1987 年 380 巻 p. 45-55
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_45

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A method exists for designing a building in which the form of collapse mechanism is assumed in advance. In sueh a case, it is recommended that the strength of columns of the structure be made higher than those of the beams. The rotation of the beam end is absorbed by the plastic deformation due to yielding of the reinforcing steel bars. The position of the neutral axis in the cross-sectional area can be seen to edge considerably near the compression zone crossing the central axis. As a result, the axial elongation can happen. If this condition occurs throughout the every span, the horizontal length of the building will expand as a whole. In considered to expand because of the slabs, possibly restraining the elongation in horizontal direction. Considering such a condition, the beam tending to yield is considered to be subject to the compressive forces from the surrounding structural members. Comparing the case where axial force was considered not to act on the beam, there is a potential that this compressive force will increase the flexural strength of beam so that the structure will not collapse in the assumed mechanism. In this study, the bending shear experiment of rectangular beam and T-shaped beam was performed to consider the effect of axial restriction of deformation, through a simple analysis. As a result, experiment and analysis show that the flexural strength of reinforced concrete beams increase by 50 % because of axial rigidity. This implies a potential that the structure will not collapse in the assumed mechanism.

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埋込み剛基礎の動特性に基づく動的擬似3次元効果の考察 : 境界要素法による動的擬似3次元効果に関する研究(その2)

中井正一, 福和伸夫

原稿種別: 本文
1987 年 380 巻 p. 56-66
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_56

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In this paper the effect of viscous dashpots introduced in two-dimensional representations on the response of structures due to seismic waves is examined by the boundary element method. To clarify the mechanism of approximate three-dimensional effect two embedded foundation system is analyzed. First the boundary element formulation of the soil-structure interaction problem for the case of rigid foundations embedded in an elastic soil is developed in conjunction with a substructure approach. It is worthy of note that an appropriate approach has to be taken for the approximate three-dimensional analysis to obtain foundation input motions and driving forces. Using the method two-dimensional and approximate three-dimensional analyses of rigid foundations embedded in a soil are made and results are compared with three-dimensional ones obtained by the boundary element method(Yoshida et al., 1986). Rigid foundations embedded in a finite soil layer underlain by a rigid rock are also analyzed to investigate the effect of soil layering. Results show that addig dashpots gives a good estimation of three-dimensional effect as long as a single foundation is embedded in a half space and that it gives excessive radiation damping for multiple foundation system and foundations embedded in a layered soil. In the latter part of this paper above mentioned approximate three-dimensional effect is investigated by considering a one-dimensional soil column supported by dashpots and also by analyzing the distribution of radiated energy. It is clarified from one-dimensional analysis that adding dashpots tends to increase real parts of impedance functions while imaginary parts remain almost unchanged. Comparing distribution patterns of radiated energy clearly shows that the radiated energy is too rapidly absorbed by additional dashpots and that the existence of an adjacent foundation or a soil layer may be underestimated.

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液体貯槽における有限振幅液面動揺に関する研究 : (その2)円筒形模型貯槽の定常加振実験

大森博司, 松井徹哉, 日比野浩, 加藤啓一

原稿種別: 本文
1987 年 380 巻 p. 67-75
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_67

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Stationary oscillative experiments of the cylindrical liquid storage model by the shaking table have been carried out, in order to confirm the validity of the results of the theoretical analysis as shown in the foregoing paper in detail. In the theoretical analysis, the nonlinear effects of the boundary condition on the free surface of the inner liquid are mainly investigated. From the result of the numerical calculation of the stationary oscillative problem, it has been clearly pointed out that nonlinear responses, whose circumferential wave number n = 0 or 2, occur at the frequency region in the neighborhood of the first resonance point. In the present paper, confirmation of the appearance of such nonlinear responses has been almost completely done, where dynamic behavior of the wave elevation have been recorded by the high speed video system and the other time dependent data, that is, dynamic liquid, pressure at the side wall, acceleration and displacement of the base of the model tank, have been put into A/D transducing procedures. Experimental results of both stationary components of dynamic liquid pressure and maximum wave elevation have been arranged in the form of the backbone and resonance curves, arid compared with that of the foregoing theoretical analysis. Both of these results turn out to have relatively good agreement, in which nonlinear bi-harmonic responses and super-harmonic resonance phenomenon at the frequency in the neighborhood of the first resonance point have been certified both theoretically and experimentally.

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鉄筋コンクリート耐震壁のせん断耐力に関する研究

益尾潔

原稿種別: 本文
1987 年 380 巻 p. 76-87
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_76

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The ultimate shear capacity of reinforced concrete shear walls has been studied theoretically and experimentally by many researchers. However, it is difficult to estimate reasonably the ultimate shear capacity of'shear walls, because of the complexity in the failure mechanisms of them. In this paper, the following subjects are studied theoretically and on the basis of past experimental results. 1) Slip failure strength of the wall panel 2) Failure modes and ultimate strength of the surrounding frame 3) Confining effect of the surrounding frame on the wall panel When the surrounding frames have large confining effect, the ultimate shear capacity of shear walls is governed only by the slip failure strength of wall panels, and is not affected by the strength of the surrounding frames. In this paper, rational expressions for estimating the ultimate shear capacity of shear walls are proposed to design shear walls, as follows. q_wu=<Q_wu>/<F_clt>=b_c(1+2β_sp_w)ζ_t…(2.1), (2.2) Q_<wu> : ultimate shear capacity of shear wall F_c : compressive strength of concrete l, t : horizontal length and thickness of wall panel β_s=σ_<wy>/F_c, σ_<wy> : yield stress of wall reinforcement p_w : wall reinforcement ratio ζ_t : effect of axial load on the shear strength of wall panel, Eq. (2. 3) b_c=b_<cu>…(16.1) b_<cu>=0.444 - 0.076 (F_c/200)…(5) : coefficient for slip failure strength of wall panel, F_c : kgf/cm^2 In the case of "small confining effect" of the surrounding frame η_c : η_<co> + β_fk_f <…(16.1), (19), (22) In the case of large confining effect of the surrounding frame : η_c = 1 η_<co> : effect of wall panel K_f : confining coefficient defined by the flexural and shear strength of frame members to the strength of wall panel β_f : coefficient decided by the past experimental results, Furthermore, β_f is related theoretically with failure modes of surrounding frames.

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計画系論文報告集目次 No.380 1987・10

原稿種別: 付録等
1987 年 380 巻 p. App3-
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_App3

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裏表紙

原稿種別: 表紙
1987 年 380 巻 p. Cover3-
発行日: 1987/10/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.380.0_Cover3

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