日本建築学会論文報告集

表紙

原稿種別: 表紙
1978 年267 巻 p. Cover1-
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_Cover1

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目次

原稿種別: 表紙
1978 年267 巻 p. Cover2-
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_Cover2

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SI単位の換算率表

原稿種別: 付録等
1978 年267 巻 p. App1-
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_App1

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CONTENTS

原稿種別: 目次
1978 年267 巻 p. Toc1-
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_Toc1

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奥付

原稿種別: 付録等
1978 年267 巻 p. App2-
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_App2

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セメント系複合材料の強度に関する確率論的研究 : 第 1 報 : セメントペースト強度について

谷川恭雄, 山田和夫

原稿種別: 本文
1978 年267 巻 p. 1-10
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_1

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Main results in the present paper are summarized as follows : 1) The fracture process of cement paste is stabilized as the air content is increased. 2) The larger the size of specimen is, cement paste shows the more stable or ductile fracture process in the small range of the size, but the fracture process transforms from ductile mode as the size of specimen is larger than a specific size. 3) The statistical distribution of strength is closely related to the fracture process and the failure mode. Namely, the mean slope of the distribution curve of strength illustrated in terms of the relation between In (-In (1-P)) and In (F) increases as the fracture process is stabilized. 4) The coefficient of the variation of strength decreases as the fracture process of specimen is stabilized. 5) The mean strength decreases with the increase of air content, and the rate of decrease of compressive strength is more significant than that of flexural strength. 6) The size effect of flexural strength is more significant than that of compressive strength. 7) The statistical phenomena of the strength of cement paste observed by the present experiment can be theoretically explained by Eqs. (8)-(12) with the value of θ related to the defect content in the specimen.

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コンクリートの初期凍害に及ぼす凍結温度要因の影響に関する研究

金武漢, 野越聖一, 田畑雅幸, 洪悦郎, 鎌田英治

原稿種別: 本文
1978 年267 巻 p. 11-19
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_11

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The factcr of freezing temperature as one of the weathering conditions is the most important factor influencing to early frost damage of concrete in case of winter concreting. It is the aim of this study to investigate the influence of this factor, such as freezing temperatures, rates, and freezing time to early frost damage of concrete. On the basis of this experimental results, the following conclusions would appear to be appropriate; 1. The factors of freezing temperature, such as freezing temperature, freezing rate, and faeezing time, are very influential to the early frost damage of concrete, and there are not so much difference of influence to early frost damage of concrete in case of non air-entraining concrete. 2. The use of intentionally entrained air by air-entraining agents shows excellent effect to the prevention of early frost damage of concrete against conditions varying freezing temperature, freezing rate, and freezing time except the case of insufficient initial curing of about 20°D・D in maturity. It is, therefore, necessary to take maturity of 40°D・D as the minimum initial curing to get good performance for the prevention of early frost damage of concrete even with the adequate air-entraining concrete. 3. It seems to be sure of the applicability of DEF (the Degree of Expansion by Frost) as an index of deterioration of concrete in early frost damage. 4. It is considered that there will be different mechanisms of cracks, pop-outs, and scalings generated during the early frost action influenced by the freezing temperature, freezing rate, and freezing time.

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有限要素法による正方形フーチングの鉛直荷重時応力解析-I

大野和男, 小幡守

原稿種別: 本文
1978 年267 巻 p. 21-28
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_21

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This paper is the first report in a series of studies on stress analysis of square column footings under vertical load by three dimensional finite element method. In this paper, we describe the results of the preliminary analysis which have been done to examine the way to analyze column footings and the factors that have the effect on the reaults of elastic finite element analysis of square column footings. As the results, the following items are clarified : a) The results obtained by the analysis in which the shape of column is considered are more proper than those obtained by the analysis in which the shape of column is not considered. b) In regard to the average values of stresses or unit stresses good results can be obtained, even if the size of finite element mesh is relatively large. c) It is necessary to consider the soil stiffness of the vicinity of column footing when the column footing is analyzed on the theory of coefficient of subgrade reaction. d) The reinforcing bars in footing slab have little effects upon the results obtained by elastic finite element analysis.

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日本各地におけるやや長周期の地盤特性の定量評価の試み

岡田成幸, 鏡味洋史

原稿種別: 本文
1978 年267 巻 p. 29-38
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_29

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A study has been made on amplification characteristics of earthquake ground motions in the period range 1 to 10 sec in whole parts of Japan, as one of the basic investigations for dynamic earthquake-resistance of very high-rise and large-scale structures. The data used in this analysis were obtained by strong motion displacement seismographs with natural period of 6 sec, operating at about 100 local observatories of Japan Meteorological Agency. All the shallow and moderate-to-large earthquakes occured in and around Japan in recent 15 years were selected for analysis. Total number of earthquakes was 138. Plots of maximum amplitude as function of epicentral distance show large scatters, which are attributed to the site conditions. An attenuation curve was, using a least squares method, approximated to the relation between maximum amplitude and epicentral distance for each earthquake. At each site the deviation from this curve was regarded as an index to express ground characteristics. Deviations for all earthquakes were assessed and the histogram was made. The mean value of histogram was defined as the most probable amplification of seismic ground motions at each station. The obtained mean values were plotted on the map of Japan, which facilitates a general view on ground characteristics in Japan. Attention must be paid on the fact that markedly high values are seen at large cities in Japan such as Tokyo, Osaka, and Niigata. A detailed survey on the ground characteristics was carried out in Kanto plain. The results revieled that the amplification increases with increasing depth to the basement at the site, and that the depth relating to ground motions in the period of 1 to 10sec are from 100m to several 1000m.

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せん断伝達理論に基づく鉄筋コンクリート短柱のせん断耐力に関する研究

金子雄太郎, 田中彌壽雄

原稿種別: 本文
1978 年267 巻 p. 39-48
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_39

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By means of shear transfer theory, the shear failure mechanisms of reinforced concrete short columns are investigated. As the basis of this study, it is assumed that the deformation of columns by shear loading is divided into three types, that is, flexural, bond failure and shear slip deformations. The ultimate state is reached when the shear loading causes shear slip along diagonal tension crack in core concrete and yield confining forces in tie reinforcing bars occur. The equations which give the ultimate shear strength of reinforced concrete short columns are derived. The analytical results show good agreement with experimental results by the authors and other researchers. It is concluded that sufficient tie reinforcement may make it possible to avoid the shear failure of columns.

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履歴系の統計的地震応答 : その 2・スリップ型及び剛性低下型の履歴系について

石丸辰治

原稿種別: 本文
1978 年267 巻 p. 49-59
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_49

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楕円境界の一方向曲線梁〔梗概〕

松井源吾, 十代田昭二

原稿種別: 本文
1978 年267 巻 p. 61-68
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_61

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空間曲線をもつ薄肉開断面材の解析

高畠秀雄

原稿種別: 本文
1978 年267 巻 p. 69-82
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_69

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The aim of this paper is to present the governing equations of motion of an elastic and uniform thin-walled open section which the axial curve is a space curve. The rigorous governing equations are formulated by reducing the three-dimensional continuum to the one-dimensional one. In this process, the modified Hellinger-Reissner's variational theorem is employed and the warping is expressed by the warping function considered the effects of the curvature and torsion of the axial curve. The derived equations are applicable to the problems including the large displacements and large angles of rotations and subjecting the deformations of the cross section and they are expressed in the lagrangian representations. Also, considering the practical use, the general equations are approximated and furthermore the linear theory is stated. The derived equations of a thin-walled open section are indepedent of the engineer's torsion-bending theory and are the treatments of the three-dimensional analysis. As the result, the presented general equations have the same forms as the theory of rods. Hence, it is shown that the theory of a thin-walled open section can be treated as the problem of rods. The resultants are the brief forms than the expressions of the engineer's torsion-bending theory and do not contain the contradictions on theory.

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水平面全天日射量観測値よりの直達日射量の推定

宇田川光弘, 木村建一

原稿種別: 本文
1978 年267 巻 p. 83-90
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_83

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Data of solar radiation on the tilted surface are essential for designing buildings, air conditioning systems and solar utilizing equipments and can be estimated from the data of direct and diffuse components of global radiation. The purpose of this study is to find the relationship between global radiation and direct component of it to estimate solar radiation on the tilted surface only from global solar radiation in any sky conditions by analizing the data of global solar radiation and diffuse sky radiation obtained from TATENO Aerological Observatory throughout a year for examination of statistical characteristics. As the statistical analysis showed the possibilities of estimating the direct component only from global radiation, the regression model expressed by a combination of linear and cubic equations, in which direct component is expressed directly as the functions of global radiation, was presented. The standard errors on estimating the direct normal radiation by this model was 60kcal/m^2h for all of the annual data when sin h>0.3 (h : solar altitude). The effects of the errors from those of direct normal radiation in converting the global radiation into the radiation on tilted surface, which is more important in practical use than the direct radiation, were examined and it is considered that the regression equations presented in this study is useful in practical purpose.

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熱ふく射が人体に及ぼす影響を評価するための人体モデルとしての直方体と矩形面との間の形態係数に関する研究 (梗概) : その 2 直方体に対する形態係数の特性

堀越哲美, 小林陽太郎

原稿種別: 本文
1978 年267 巻 p. 91-101
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_91

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交錯流動のシミュレーションモデル : 鉄道駅における旅客の交錯流動に関する研究 (2)

中祐一郎

原稿種別: 本文
1978 年267 巻 p. 103-112
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_103

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In this paper, the main logic of the simulation model of complicated passenger flow and some examples of simulation by the model are presented. The purpose of the model is to predict hourly and locally the state of flow of passengers who have various destinations and routes in intricate space of a railway station. In the model, as its basic frame, the state of flow is represented as changing distribution of passenger groups on a plan divided to meshes, and the relation between density and velocity is difined on the base of preceding studies on crossing flow. As regards this utilization of the results of study on crossing flow for the model of general complicated flow, on the process of framing the logic, the device of simplifying the complicated flow gradually and replacing it finally with complex of crossing flow is made. As examples of simulation, flows in a platform, in a connecting passage, and in a concourse, are presented. Taking a large view, the results of simulation correspond nearly with the actuality. In future, further studies on simulation of passenger flow are to be promoted side by side with positive studies on actual flow.

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重要度係数の最適解 : 地域公共施設の構造安全計画・その 2

青木義次

原稿種別: 本文
1978 年267 巻 p. 113-120
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_113

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The probability density function of load effect S, strength R as random variables is needed in order to solve the optimal value of importance factor. In the first case we assume that the probability density functions of S and R are normal distributions because it is probable that variables S and R determined many factors have a normal distribution asymptotically by the central limit theorem. In this case a solution of equation (19) in earlier paper is given by equation (N-10). This solution is shown in Fig.1. In second case, we assume variables S and R have log-normal distributions, that is, the distribution functions of log S and log R are normal distributions. The solution in this case is given by equation (LN-21) and this result is shown in Fig.4.

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活動等高線 (AC) に関する研究 : その 1. 閉曲線図形における構造概念の確立

藤井明

原稿種別: 本文
1978 年267 巻 p. 121-128
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_121

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The contour line which can be used to express the multiple activities of urbanism and architecture is called "Activity Contour." The fundamental study on AC is started with the geometrical analysis of the closed curve. In this report, as part I. of the study, three kinds of structural concept "Ridge (R^*)" of closed curve are defined. 1. "Ridge" of a closed curve. 2. "Ridge" of belt-shaped area of double closed curve. 3. "Ridge" of multiple closed curve. The definition of the "Ridge" of a closed curve C is as follows. Let ε be positive, parallel closed curve C′is defined as a set of points from which the distance to the curve C is ε. As to the correspondence between the points on curve C to the points on curve C′; four patterns of correspondence are classified. This correspondence is related to the distance between the two curves. Now let ε be any value andif the diatance from a point P on curve C to curve C′is not equal to ε, this point P is defined as a singular point on curve C. The same holds ture on curve C′. When the distance ε varies, a set of singular points of the parallel closed curves can be got, and we call this as the "Ridge" of a closed curve. The fact of primary importance about the "Ridge" of a closed curve is that every closed curve has a "Ridge" and it can be defined uniquely.

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公的集合住宅地における人口変動の推計方法と人口計画の可能性について (その 1)

上野淳

原稿種別: 本文
1978 年267 巻 p. 129-139
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_129

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滅失住宅推計方法論および地域特性の検討 : 住宅統計資料の分析-その 3

玉置伸[ゴ], 鈴木博志

原稿種別: 本文
1978 年267 巻 p. 141-153
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_141

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以上の考察から得られる要点をのべ, 本稿のむすびとする。1)建築時期別住宅の滅失変化は, ロジスティック曲線あるいはゴンペルツ曲線の変化にきわめてよく適合することが確認され, 戦前住宅と終戦時〜25年住宅に関して検証することができた。これにより建築時期別に住宅の耐用年限の推計が可能となり, 滅失住宅戸数の推計方法としても利用できる。2)以上の現象は全国都道府県レベルの場合にもあてはまり, 地域別の住宅滅失変化の動向が捉えられた。それによると, 住宅の滅失水準は地域の特性をかなり反映しており, 各地方ブロック別の特徴もみられるほか大略的にみて西日本より東日本地域の方が住宅の滅失化は速い。3)以上の滅失水準の地域別特性を建築年代ごとにみると戦前住宅においてその傾向がもっとも著しくあらわれており, 建築年代が若くなるにつれて薄れてゆく。また戦前住宅の滅失は全体的に60〜70%を占めるが, 地域別には, 非都市化地域ほどより重要な意味をもっている。4)地域における住宅の滅失比率の水準は住宅の耐用年数と密な関係にあり, 滅失比率が高ければ耐用年数は短く, 同時にその逆のこともいえる。5)またこの滅失比率は, 時系列的には理論曲線変化の横断面指数を意味しており, このことから地域における住宅の滅失動向の予測が可能となる。一方, 建築統計年報による考察から次の点が確認された。6)住宅の除却活動はここ15年来漸次活発化してきており, 地域別には概して西日本より東日本地域における活動が旺盛である。このことは上記2)の滅失における事実と一致する。7)除却理由別の比較では老朽による滅失は全体的に70〜80%が老朽要因による滅失とされているが, この比率は近年ほぼ一定している。また, 地域別との対応では都市化地域ほど老朽理由による除却の比率が低くなり, 都市化過程における社会的・経済的・環境的要因からの住宅除却の比重が増大している。

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戦国期京都の町組「六町」の構成と沿革

高橋康夫

原稿種別: 本文
1978 年267 巻 p. 155-162
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_155

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Contents are mainly classified by two items as follows : 1. The constitution of the Rokucho. -1. The territory of the Rokucho. -2. The names of the constituent towns. 2. The pre-history of the Rokucho : a consideration on the process of the urban development of the constituent towns.

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近世武家住宅における数寄屋風書院について : 大名屋敷の数寄屋風書院の平面と機能

北野隆

原稿種別: 本文
1978 年267 巻 p. 163-170
発行日: 1978/05/30
公開日: 2017/08/22

DOIhttps://doi.org/10.3130/aijsaxx.267.0_163

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At about the Shouho-period (A.D. 1644〜1648), the plan of rustic style Shoin in the Samurai-House changed. Before the Shouho-period, the houses of the rustic style shoin had been decorated with Toko and the simpler rustic interior design. They were used mainly for the tea ceremony. After Shouho-period, They were decorated with Toko, Tana, Tsuke-Shoin and more elaborated interior design. They were used mainly for the entertainment. Houses which were built after Houei-period (A.D. 1704〜1710) were already equipped with all the elements of the rustic style shoin.

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