Transactions of the Architectural Institute of Japan

[title in Japanese]

Article type: Cover
1963 Volume 85 Pages Cover1-
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_Cover1

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[title in Japanese]

Article type: Cover
1963 Volume 85 Pages Cover2-
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_Cover2

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[title in Japanese]

Article type: Appendix
1963 Volume 85 Pages App1-
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_App1

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[title in Japanese]

Article type: Index
1963 Volume 85 Pages Toc1-
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_Toc1

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[title in Japanese]

Article type: Index
1963 Volume 85 Pages Toc2-
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_Toc2

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RELATION BETWEEN THE COMPRESSIVE STRENGTH AND THE STRESS-STRAIN CURVE OF CONCRETE BEFORE 28 DAYS

MOTOKI KONDO, YOTARO KOBAYAKAWA

Article type: Article
1963 Volume 85 Pages 1-7
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_1

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This paper is a report on behaviers of stress-strain curves and elastic moduli of concrete specimens (150×300mm cylinders)-331 normal and 87 press-treated concrete, which were tested on 1 day, 3 days, 7 days and 28 days. The water cement ratio ranged from 40 to 65%, and the compressive strength 20 to 500kg/cm^2 for the normal and 40 to 600kg/cm^2 for the press-treated. The stress-strain curve was self-recorded by X-Y Recorder. The results are as follows: (1) The stress-strain curve and elastic modulus of early concrete are not concerned with ages and water-cement ratio. (2) The strain values corresponding to the same stress-compressive strength ratio (σ/σ_B) have a linear correlation to the stress values (σ or σ_B), that is δ(n)=P(n)+Q(n) (1) where, δ: strain. σ_B σ: stress. σ_B: compressive strength. n: σ/σ_B. P, Q: coefficients determined by the least square method when σ/σ_B value is fixed, for example, σ/σ_B=0.1, 0.2,……1.0 This linear correlation is concluded not only for the normal, but for the press-treated concrete, though the strength behavier in failure of normal concrete differs from that of press-treated one. (3) The empirical formula of elastic (secant) modulus and stress-strain curve that we propose are as follows: [numerical formula] (2) [numerical formula] (3) where, E(n): secant modulus when σ/σ_B=n. x:σ/σ_B when σ takes an arbitrary value. α, β, γ; α', β', γ': coefficients which are determined by the least square method for P or Q. (4) We can draw stress-strain curve graphically for a certain compressive stregth, if we replace σ_B with σ/n at the formula (1) and draw some linear lines corresponding to σ/σ_B value; i, e, 0.1, 0.2……1.0.

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AUTOMATIC DESIGN OF TRANSMISSION TOWERS BY ELECTRONIC COMPUTER

MASAO NARUOKA, TETSUYA NAKANO

Article type: Article
1963 Volume 85 Pages 8-12
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_8

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The digital computer, NEAC2203, was used for the purpose of analyzing and designing automatically the double circuit transmission towers with two ground wires and three cross-arms, according to the specification JEC (Japan Electric Code) 127. The structual system is the double Warren type, and number of pannels is less than 30. The horizontal loads were assumed to be equally distributed to the two faces of the tower and the vertical loads to the four legs. In this program, leg and lacing members were assumed as compression members and joints and bolts were excluded. The input data are as follows: (1) Horizontal and vertical loads. (2) The tower outline dimensions (pannel length, cross-arm length, tower width) bracing type (as for application of redundant members) (3) Position of bross-arms. (4) Allowable stress, cross-sectional area, radius of gyration, weight and wind load per meter of equal angles, and limit of slenderness ratio. The output data are shown below: (1) Members stress due to each load condition. Max. stress of each member. (2) Size, unsupported length, slenderness ratio and allowable strength of each stress member. Size of each redundant member. (3) Weight of the tower. More than 3500 instructions were required to complete the programming in the above-mentioned conditions, and about 2 minutes were needed to execute the calculation, 8 minutes to read in, 30 minutes to print the output data.

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ON THE COLLAPSE MECHANISM OF MULTI-STORY FRAMES

JUN SAKAMOTO

Article type: Article
1963 Volume 85 Pages 13-18
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_13

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An approach to the plastic design of multi-story frames is considered in this paper. The design method is attempted in the following way, (1) The patterns of plastic hinges in the ultimate state of frames are assumed to satisfy the weight compatible condition of the minimum weight design theorem. (2) If suitable potterns have been assumed, the relations may be established from which the plastic moments of the beams and columns can be calculated. This design procedure is shown in some examples and the method of estimating the frame deformations in such collapse mechanisms is discussed.

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ANALYSIS ON SPACED TRUSS COMPOSED OF SQUAVE PYRAMID UNITS

TSUTOMU KATO, KOHICHI TAKANASHI, YOSHIUKI TSUSHIMA, YASUHIRO HIRATA

Article type: Article
1963 Volume 85 Pages 19-25
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_19

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In the previous paper, the stability of the spaced truss was discussed, and then two kinds of calculation methods of the deflections and the truss member's stresses were reported. In this paper, there are reported the results of two above mentioned methods, and they are compared with each other. Furthermore, the results of experimental analysis on the spaced truss, which is actually carried out on the model, are imformed. From theoretical and experimental analysis, the conclusions are obtained as follows; a) The deflection, calculated by the approximate method, is vather smaller than that by the precise method. b) It is useful for designing the spaced truss to calculate the deflections and stress distributions not only by the precise method but also by the approximate one, comparing with the results of experimental analysis.

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AN EXPERIMENTAL STUDY ON THE VISUALLY RECOGNIZABLE AREA IN THE CASE OF THE FRONTAL OBSERVATION

MASAMI KURODA

Article type: Article
1963 Volume 85 Pages 26-30
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_26

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When a building, or a painting or a cinema, is observed, the observation distance and inclination make the observation easy or difficult. The purpose of the present study is a scientific clarification of the above reation and the theory of the "Fernbild und Nahbild" in the fine art. The study is consisted of the two part, the one is to observe frontally, the other is to observe obliquely. The former is stated in this paper, the latter shall be in the next paper. Suppose that a figure, whose shape is a square or a rectangular, is observed frontally, the difficulty of the observation may be shown by the time length to recognize the content of the figure, such that the long time indicates the increase of the difficulty. This study, measuring those times, proves the following facts that; the small distance makes the difficulty increase; the larger the distance, the easier to observe; and its variation is proportioned to the sdid angle, whose vertex is the eye, covering the figure; but when the eye goes across a certain limitting position, the difficulty becomes invariable. The limitting position is the solid angle of 0.154 steradian, and the visual angle of 22°40', and the 2.5 times distance of the figure's size.

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AN AREAL STUDY OF GENERAI HOSPITAL PLANNING : Problem of demand and supply of general hospitals

MAKOTO YANAGISAWA

Article type: Article
1963 Volume 85 Pages 31-37
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_31

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To begin with this subject will be discussed in the following three questions: what kind of hospital facilities will be available to the general public in a certain hospital zone?; to what extent it will be supported by people of its service area; and, in terms of present and future needs how extensively a hospital should be equipped? The following conclusions were reached on the basis of analysis of out- and in-patients. 1. Hospital coverage differs after its location. 2. A Hospital located in the center of residential district serves mostly to female and children. A hospital in such place should serve for maternal and child welfare. 3. A hospital located in city center with convenient means of access are serving to people of wide range of age, 20-60, and of extensive area.

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ESTIMATION OF FIRE TEMPERATURE RISE CURVES IN CONCRETE BUILDINGS : PART. 1

TAKASHI SEKINE

Article type: Article
1963 Volume 85 Pages 38-43
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_38

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The subject of this paper is the derivation of the method of estimating the temperature rise curve in burning concrete room. The method of estimation employed is to calculate the fire temperature from the equation of heat balance relating to tne total heat loss and the heat quantity produced by a fire. In this calculation, following assumptions are used: (1) The room is filled with flames. (2) The emissivity of the flames is approximately 1.0. (3) The outside of the window is a black body at the outdoor temperature. The fire temperature curve calculated is expressed according to the opening factor of the room as shown in Fig. 7. The opening factor is given by √<H> A_B/A_T, where, H is the height of the window, A_B is the area of the window and A_T is the total area of the inside surface of the room.

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THE STUDY OF THE SALE AND RECEPTION ROOMS OF THE KAITAKUSHI. (II)

AKIHISA ENDO

Article type: Article
1963 Volume 85 Pages 44-49
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_44

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In the present paper the circumstances before or after the time which the KAITAKUSHI trusted the design of the produce exchange to J. Conder (1852-1920), Professor at the Imperial College of Engineering, are studied. And the outlines of the letters exchanged between the KAITAKUSHI and J. Conder are introduced.

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1963 Volume 85 Pages 50-51
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_50

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[title in Japanese]

[in Japanese]

Article type: Article
1963 Volume 85 Pages 52-
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_52

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[title in Japanese]

Article type: Bibliography
1963 Volume 85 Pages 53-55
Published: May 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.85.0_53

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