日本建築学会論文報告集

表紙

原稿種別: 表紙
1979 年278 巻 p. Cover1-
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_Cover1

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目次

原稿種別: 表紙
1979 年278 巻 p. Cover2-
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_Cover2

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SI 単位の換算率表

原稿種別: 付録等
1979 年278 巻 p. App1-
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_App1

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CONTENTS

原稿種別: 目次
1979 年278 巻 p. Toc1-
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_Toc1

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奥付

原稿種別: 付録等
1979 年278 巻 p. App2-
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_App2

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破壊力学によるコンクリートの破壊 : 第 1 報 : 引張応力場におけるコンクリートの破壊

岸谷孝一, 前田孝一

原稿種別: 本文
1979 年278 巻 p. 1-8
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_1

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This paper reports the basic problems in aplication of fracture mechanics to concrete. The fracture toughness values obtained by usual toughness test are very higher than that calucurated by surface energy. Glucklich explained this fact by aggreate crack arrest effect. Authors have taken the same view-point and thought that the fracture toughness value of heterogeneous material like concrete is related the energy that is needed to extend macroscopic crack including crack arrest effect. Instead of considering the physical meaning of fracture toughness value furthermore, we have proposed several problems as follows. 1) Dependance of fracture toughness value on crack length 2) Dependance of fracture toughness value on stress field 3) Dependance of fracture toughness value on specimen size effect 4) Dependance of fracture toughness value on artificial flaw geometry 5) Relationship of fracture toughness value to usual non-crack introduced specimen strength As the first step, we have experimented fracture toughness test in tensile splitting and bending. In short crack length, fracture toughness value became very small. So we hypothesized branching crack that is stable crack extension before ultimate failure. Usual non-crack introduced specimen strength is related to fracture toughness and critical crack length. The critical crack length is thought the branching crack of non-crack introduced specimen and depends on aggregates and stress field. As a result of our experiments, we can aply fracture mechanics to concrete. However the fracture toughness value and critical crack length of concrete are very large. This means that concrete is insensitive to crack and it is no merit to aply fracture mechanics method to "macroscopic" failure of concrete.

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非線形自由振動 : 非線形運動方程式の定常解問題-第 3 報

皆川洋一

原稿種別: 本文
1979 年278 巻 p. 9-14
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_9

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This paper study periodic solutions of nonlinear autonomous equation of motion with one-degree-of-freedom in conservative field. Considering the relation between shapes of closed orbits on the phase plane and free vibration response shapes of the periodic solutions corresponding to the orbits, we derive the following conclusions. 1. The approximate periodic solution obtained by applying the cosine Fourier series to the equation of motion in conservative field uniformly converges to the exact periodic solution of it. 2. The approximate periodic solution obtained by applying the sine Fourier series does not generally converge to the exact solution. Then we seek the condition where the sine Fourier series can express the approximate solution which uniformly converges to the exact periodic solution.

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空間曲線棒の有限変形理論

高畠秀雄

原稿種別: 本文
1979 年278 巻 p. 15-25
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_15

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The aims of this paper are to formulate the rigorous governing equation for the problem of large displacements and large rotations of an elastic rod, whose axial curve is a space curve, in the reference state and further to represent the various approximate equations of the derived rigorous governing equation by means of approximations without loosing generality for practical uses. It is assumed from the viewpoint grasping the main deformation behaviour that the displacement function of the rod consists of the plan displacement composed of stretching, bending, the transverse shear deformation and the deformation of the cross section without the local deformation and of warping occurring by twisting, and that the latter warping is addition to in the displacement state of the former. Wherein it is also assumed that warping is expressed by the product of warping parameter and the modified warping function considered the effect of the initial curvature and torsion of the axial curve in the St. Venant's warping function. Under such assumptions to the displacement functions, the governing equation of elastic rods is obtained by reducing the three-dimensional body to the one-dimensional one through the modified Hellinger-Reissner's variational principle. Furthermore, the simplified equations of the derived rigorous governing equation are presented by means of the following assumptions. (i) the assumption of the thinness of a rod, (ii) the neglect of the effects of the curvature and torsion in warping, (iii) the neglect of the nonlinear terms involving warping, (iv) the assumption of the rigid displacement of the cross section, (v) small rotation and the neglect of the warping components α^2, Although these assumptions can use arbitrarily and independently, the simplified equations in this paper are developed by means of the above assumptions in turn. The results derived here contain the theories of Washizu and Wempener and further the classical result.

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細長い合成柱の設計式

若林實, 吉田望

原稿種別: 本文
1979 年278 巻 p. 27-36
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_27

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The researches on the strength of long composite columns and design formulas for them are reviewed, and a new design method for them is proposed. As the new method is based on the additive theory, it is simple and has the advantage that two independent design formulas can be used for the design of steel portion and reinforced concrete portion. Strength of a centrally loaded composite column is obtained from Eq. (1). Ultimate strength and allowable capacity of a beam-column are obtained from Eqs. (8) and (9), and Eqs. (12) and (13), respectively. If there is moment gradient in the longitudinal direction due to the difference of end moments, Eqs. (8) and (9) are modified to Eqs. (14) and (15), respectively. In chapter 4, the strength of composite columns with cross sections shown in Fig. 3 by mean of the proposed method are compared with exact values from theoretical analysis. The results are shown in Figs. 5 to 7 for centrally loaded columns, Fig. 10 to 12 for eccentrically loaded columns, and Fig. 13 for eccentrically loaded columns with moment gradient, respectively. The experimental results by Stevens are compared with the strengths by means of the proposed formulas in Fig. 14. Proposed formulas by Dowling et al and Roik et al are compared with that in this paper in Fig. 15. As shown in the figures, errors involved in the proposed formulas are in the safe side and reasonably small.

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H 型断面鋼梁の弾塑性横座屈後挙動

井上哲郎

原稿種別: 本文
1979 年278 巻 p. 37-44
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_37

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Experiments of protable frame with H-sectional beam under horizontal loading were performed to observe the restoring force characteristics of the beam especially in the plastic range. Generally deformability of beams is limitted by lateral or local buckling. Tested beams have small width-to-thickness ratio for both flange and web. Collapse mode of them was characterized by the lateral buckling. Specimens are nearly of full-size and are provided with practical conditions such as intermediate sub-beams and floor bracings. Experimental results were compared with analytical ones proposed in this paper. The method of analysis makes allowance for strain-hardening of material and Post-buckling equilibrium of the beam. Analytical predictions agree fairly well with experimental results in regard to maximum strength and deformability.

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小梁をもつ鉄筋コンクリート床版の応力性状と撓み障害について

井野智, 土橋由造

原稿種別: 本文
1979 年278 巻 p. 45-54
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_45

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本報告では, 有限差法に一部撓角法を併用し, 各構造要素の変形を考慮した小梁付き床版の解析を行い, 小梁の設置形式が日型, 目型の2種について, その応力性状を明らかにしたもので, 斯様な架構形式の小梁付き床版の応力特性は大凡次の通りである。(1)周辺固定床版よりも大きな最大負曲げモーメントが平行大梁と床版の接合辺に生じる。(2)小梁の曲げ剛性が小さくなると最大負曲げモーメントは増大する。(3)スパン/小梁丈比が同一ならば, 単一床版の辺長比の大きいもの程, 最大負曲げモーメントは増大する。(4)最大負曲げモーメントの増大は, 小梁と大梁の相対撓みの大きさにほぼ比例する。(5)小梁の撓みは, 小梁自身の撓みの外, 直交大梁の捩れと撓みの影響を顕著に受ける。(6)小梁の荷重支配域は, それに平行な大梁の荷重支配域より小さく, 亀甲型分布形式による略算値は, 小梁自身とそれに直交する大梁には安全側の, 小梁に平行な大梁には危険側の誤差を与え, その値は単一床版の辺長比の大きなもの程大きい。従って, 本報告に示した損傷例のように, 長手大梁に平行な小梁を設置する架構形式は, 小梁に過大な撓みを生じ易いので, 極力避けるべきものと考えるが, この形式によって架構する場合には, 次のような配慮が肝要である。(1)小梁断面はそれに平行な大梁とできるだけ同じ寸度で設計するべきである。(2)小梁に直交する大梁の曲げ剛性と, 捩れを受ける大梁では, 特にその捩れ剛性を高める必要がある。

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鋼構造物の耐震安全性について (3) : 低層筋違付ラーメン架構を対象として

山田稔, 河村広

原稿種別: 本文
1979 年278 巻 p. 55-66
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_55

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In the preceding papers (I) (II), the aseismic capacity of steel structures without braces were discussed on. In this paper, furthermore, the aseismic capacity of low-rise steel structures composed of rigid frames with elastic and/or plastic buckling type braces arranged symmetrically in plan. First, the mechanical behaviors of a single brace subjected to alternately repeated axial loading are described in brief formulas. Second, steel structures with braces are divided into two types, i.e. rigid and flexible ones. Third, an analytical approach to the resonance-fatigue-characteristics of flexible type steel structures with braces are shown on the basis of the idealized and simplified restoring functions and hysteretic area characteristics of barce-and rigid frame-elements. Finally, evaluation criteria and procedures of the aseismic capacity and safety of steel rigid frames with braces are presented. (Table 1)

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地震時における地盤建物連成効果に関する研究 (その 1) : 渕野辺における実験観測と基本モデルの検討

入江康隆, 北川良和, 大沢胖

原稿種別: 本文
1979 年278 巻 p. 67-80
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_67

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枠付き耐震壁のひびわれ後の性状に関する研究 : 間接実測値の解析法の提案とその適用例

今井弘, 小杉一正

原稿種別: 本文
1979 年278 巻 p. 81-90
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_81

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実測されたひずみと節点外力に最も良く合うように, 誤差の最小2乗法理論に基づいて構造物の変形状態や応力状態を解析する方法を示した。本方法は, 弾塑性域にわたって成立するので, 実験データが十分に得られている試験体の破壊経過や, 各部材の履歴を詳しく調べるのに適している。鉄骨枠付き耐震壁のせん断試験結果に適用した結果, 試験体がたどった破壊経過, 塑性域の変形状態と応力状態, 及び各構造部材の履歴(応力-ひずみ関係)を得ることができた。これらの結果と, 第3章で行なった理論解析結果をまとめると次のようになる。i)壁コンクリートはひびわれ前では, ほぼ純せん断応力状態である。ii)壁コンクリートはひびわれ後圧縮場を形成し, 周辺枠を外側に押し出す。また壁筋は引張斜材として働き, 壁筋比が多い本試験体の場合には, それはコンクリートの引張強度_cF_tを降伏点とする原点指向の履歴特性をもつ材に理想化される。iii)鉄骨枠耐震壁では, 壁のひびわれ後の枠剛性は, 鉄骨の弾性剛性で評価できる。iv)本試験体では, 周辺枠は軸力が支配的であり, 曲げモーメント量は小さい。最大耐力間近になると, せん断力もかなり大きくなる。なお, 周辺枠が鉄骨鉄筋コンクリートの耐震壁に対して解析した間接実測値については, 次の機会に行なう予定である。

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耐震壁の Stiffness Matrix の実用算定法 (第 1 報) : 基本 Flexibility Matrix および基本 Stiffness Matrix の各要素の性状

富井政英, 大野英則

原稿種別: 本文
1979 年278 巻 p. 91-102
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_91

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台風災害におよぼす局所地形の影響に関する研究 (I) : 1975 年台風 13 号による八丈島の風害について (その 1) 重回帰分析

羽倉弘人, 小泉俊雄, 若月学

原稿種別: 本文
1979 年278 巻 p. 103-111
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_103

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The typhoon 13 in 1975 hit the small island Hachijo and damaged on many houses and others. This study is concerning with the relationships between distribution of damaged houses, which was devised from aerial photographs, and local terrain. It is effective for accuracy and time to use the aerial photographs to look over the damaged houses covering wide area. We, however, are able to find out only the destroyed houses and the houses which were damaged to their roofs, so long as to use the photos. We have to miss the slightly damaged houses, for instance, damaged on walls, windows and so forth. Fortunately, this time most of the dameges were belong to the types which are easy to find out useing the aerial photos. Therefore the results of the survey using the photos shows good agreement with the results of the field survey. We adopted some typical factors which represent the influence of local topography for the analysis of the relationships between the damage ratio and the topographical effects. The analysis was carried out to seek the regression equation by means of multiple regression analysis. As to make clear the effect of each factor, we analysed change of residual. Residual is difference between the real damage ratio and evaluated damage ratio, and that is changed by the supplementary factor. Therefore, the effect of each factor is made cleare from change of residual. Then, we concluded that it is useful to use multiple regression analysis and residual analysis to estimate the influence of every topographical effects on the damages of houses hit by strong wind. In this case, because of the small island, the sea ratio, we define as the percentage of the sea space in an area, became the most important and serious topographical factor. From the results of residual analysis, we found out some particular points which were influenced not only by the sea but any other factors. Those can be influenced by airstrip, hill, slope, foot of mountain which are difficult to incorporate into this analysis.

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省エネルギー設計の為の熱負荷簡易計算法

横山浩一, 牧英二, 石野久彌

原稿種別: 本文
1979 年278 巻 p. 113-119
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_113

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This study primarily aims 1) at analyzing how the heat load characteristics (integrated annually, monthly and at peak time, the outside temperature-heat load relationship and the annual load frequency distribution) are affected by the types of various building elements and also. 2) at developing a simplified method to estimate the heat load characteristics. The authors analyzed heat load characteristics by utilizing the "design of experiments" (DOE) technique which is one of the method of Numerical Statistics. The DOE method has been defined as method to obtain an objective conclusion through an effective experiment for the phenomenon affected by complicated factors. A large number of simulation results were subjected to analysis of variance, and a set of tables indicating the degrees of effects of the significant elements on the heat load characteristics was prepared on a consistent basis. The heat load characteristics of any space can be obtained by these tables through a few arithmetic operations.

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建築における排水立管内の流れ性状に関する基礎的研究 : 終局速度・終局長さおよび誘引される空気流量について

浅野良晴, 紀谷文樹, 小林陽太郎, 松井昌幸

原稿種別: 本文
1979 年278 巻 p. 121-128
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_121

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The characteristics of the practical flow of the drainage in stacks vary with the inflow conditions and the plumbing systems. In this report the authors tentatively assumed that the drainage in stacks was two phase flow as annulus composed of water and air, and analysed the characteristics of it from the experimental and theoretical viewpoints. 1) The authors obtained the equations in order to calculate the therminal velocity and the terminal length from the flow quantity of water. 2) The flow quantity of air induced by the water was roughly estimated from the fllow quantity of water and the terminal velocity. 3) It was proper to express the flow characteristics in stacks with the occupant ratio of water.

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計画における意義行為と表示行為 (その 2) : 論理学的観点からの研究

谷口興紀

原稿種別: 本文
1979 年278 巻 p. 129-134
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_129

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As far as the cognition in the planning is concerned, it is important that the clearness of the knowledge is assured. By the direct clear knowledge we mean the self-clear knowledge which enables to be the evidence of other matter. And the speech about things which we intend to plan has this direct clearness. From this direct clear knowledge, we can get the indirect clear knowledge. The indirect clear knowledge. bases upon the direct clear knowledge. R. Chisholm shows nine principles which are applied to the direct clear knowledge and get some indirect clear knowledge. He calls them the rules of evidence. I analysed them from signifying behavior and referring behavior, and showed the key point of such rules was the inductive confirmation. I correspond signifying behavior to expressing the direct clear knowledge, namely, the discourse about the planning object, and referring to expressing the indirect clear knowledge, namely, the discourse about the realized object in planning. And I correspond the process from the direct to the indirectto the process from signifying to referring, and I showed the brief application of these nine rules to the locutions in planning and discussed the problem about the application of these rules to planning. Finally, I discussed the possibility of the conversion of referring in to signifying.

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ごみ処理計画の展開とその見直し : ごみ問題を通しての考察

石丸紀興

原稿種別: 本文
1979 年278 巻 p. 135-146
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_135

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Through the waste problem in Hiroshima City, this paper is studied on what the future prospects, that is, the prior condition of planning should be, and on what should be treated as the domain of planning. The waste volume which gives the prior condition to waste treatment has been expected to increase steadily hitherto, however by "Oil Shock", by "State-of-waste-emergency" declaration, by classifying-and-collecting system, and by other waste administration in Hiroshimi City, the volume showed a decrease. For example, thirty-five percent of all waste volume is reduced on account of "Oil Shock", and twenty-three percent of mixed-waste volume or forty-two percent of raw waste on account of the "State-of-waste-emergency" declaration and classifying-and-collecting system. The system materially has several effects such as physical reduction effect, self-disposal effect, waste-consciousness effect and recovery-and-reproduction effect. Thus, the reduction effect of waste volume is grasped in relation to several factors. Especially, it is pointed out that the state of waste-consciousness and life-style of citizens plays an important role in the reduction. Moreover factors which will determine waste volume are examined on several levels, and contents to which waste treatment planning should correspond are developed. Thus, it is argued that to determine suitable the prior condition in waste treatment planning is also the domain which planning side should deal with, and unless this aspect is properly taken care of, the plan of treatment plants itself will reach a dead-lock.

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日常生活圏の道路の性格分類 : 生活道路の計画的研究 (その 4)

小場瀬令二

原稿種別: 本文
1979 年278 巻 p. 147-154
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_147

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I intend to account for that the roads in community area are classified into five categories. (1) roads for pedestrians; main routes for pedestrions. (2) roads for vehicles; not concerned with community; main vehicular routes and not concered with pedestrians and playing children They are not Community Roads. (3) semi-private roads; is no through traffic and the place for playing children, concerned with the only dwellers who face the roads. (4) pedestrian roads with vehicle access; there are conflicts between pedestrians and vehicles, and in general they are classified into collector roads. (5) vehicular roads with pedestrian; heavey trafficis on them, which are unpreferable for pedestrians, dwellers and playing children. In general they are classified into structural roade in town.

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都市構造関連指標と開発関連指標の関係分析 : 都市の構造と開発に関する基礎的研究・その 1

冨永六郎, 本多義明, 舟渡悦夫

原稿種別: 本文
1979 年278 巻 p. 155-161
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_155

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本報文の成果をまとめるとつぎのようになる。(1)幾つかの都市構造関連指標から都市の構造的特性を把握する時, 住宅都市的因子, 工業都市的因子, 都市規模因子, 都市サービス因子などの少数の少数の因子に単純化して考察することができる。(2)都市をその構造的特性から類型化する方法のひとつとして, (1)で述べた各因子の因子得点を用いて類型化する方法があり, 本分析では, 5つの都市類型に分類された。(3)幾つかの開発関連指標について, その内容による類型を設定し, (1)に述べた因子から類型を判別したところ, 就業人口構成率による類型が最も都市の構造的特性を反影した開発現象を表わしていることがわかった。つぎに, 本研究を進めていくにつれ, つぎの点について, さらに検討を深めていく必要性を痛感した。(1)都市の構造をより明確化するために, 説明力の高い妥当性のある都市構造関連指標の選択・作成が必要である。同様に, 開発関連指標についても, 開発現象をより反影した指標の作成が必要である。(2)本分析は単年度におけるデータを用いた静的な分析であるが, 都市の構造ならびに開発現象の変化を検討することが重要であり, 時系列的な分析が必要である。以上の問題点を踏まえ, つぎに, 大阪府下守口市を事例として, 時系列分析を行う。なお, 本分析で行なったデータ処理, 統計解析は, 名古屋大学大型計算機センターのシステムを用いた。

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吉島家住宅の形態構造とその意味論的関係

大野秀敏

原稿種別: 本文
1979 年278 巻 p. 163-175
発行日: 1979/04/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.278.0_163

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