Transactions of the Architectural Institute of Japan
Online ISSN : 2433-0027
Print ISSN : 0387-1185
ISSN-L : 0387-1185
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Volume 140
Displaying 1-13 of 13 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    1967Volume 140 Pages Cover1-
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_Cover1
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  • [title in Japanese]
    Article type: Cover
    1967Volume 140 Pages Cover2-
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_Cover2
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  • [title in Japanese]
    Article type: Index
    1967Volume 140 Pages Toc1-
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_Toc1
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  • STUDY ON THE BLEEDING OF HIGH SLUMP CONCRETE
    TAIJI SAJI, YASUNORI MATSUFUJI
    Article type: Article
    1967Volume 140 Pages 1-6,71
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_1
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    In the proceeding report, sedimentation experiment of high slump concrete was made, and authors induced the equuation of sedimentation rate of high slump concrete. This report made clear the relation between the mixing proportion of high slump concrete and the sedimentation rate. The method of it draws here; In the first, standard mixing proportion diagrams are made, then, from those diagrams, representative points in several kinds of mixing proportion are selected to calculate sedimentation rate by foregoing equation, and through those calculated values and mixing proportion, the tendency between the two is pursued. The conclusions drawn here, will be summed up as follows, (1) Uuder the same condition of water-cement ratio, the larger slump is the larger sedimentation rate of concrete. (2) In the case of the same slump and the same water-cement ratio, using the more fine sand, ususlly, sedimentation rate becomes larger, but in the fine sand attended with sand ratio it decomes smaller. (3) Contrary to mentioned above, in the case of fine sand, when sand ratio becomes the larger, sedimentation rate more rapidly increase. (4) Usually, sedimentation rate increases when water-cement ratio becomes larger under the other conditions are same. Though (1) and (4) are inagreement with general conclusions, but the valut of sedimentation rate varies with the sand used or by the change of the mixing proportion, specially, in the case of using fiine sand. By this study, we can select the mixing proportion of high slump concrete that gives the minimum quantity of sedimentation rate.
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  • STUDIES ON THE PROPERTIES OF ADHESSIVENESS OF CEMENT PASTE AGAINST AGGREGATES
    REIICHIRO FUKUDA
    Article type: Article
    1967Volume 140 Pages 7-16,71
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_7
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    In this investigation, portland cement paste-aggregates bond strength are tasted and desigened to show how strongly cement pasts adhessiveness to the aggregates by charactericities that are aggregates surface potential, roughness, contact angle, water cement rate, surface active agent, age and different aggregates. Cement paste-aggregates bond strength were determined by measuring the tensile load to ruptur of the bond. Aggregate surface potential was determind by potential. Roughness wasmas measured by JIS B 0691 Contact Angle was determind by potical. The conculsion summarized below. 1. Electrical surface properties of aggregates are depend upon the component of aggregates, therefore, in a certain liquid, aggregates surface shows both plus and minus is electrical potential. 2. I week cement paste-aggregates bond strength are determined and after the I week of bond strength was found to be greater than 1 week value slowly but it is not significant. 3. The strength of cement paste-aggregate bond strength decrease with increasing water cement, at a rate of which corresponds to an appoximately linear relationship between the proption of water cement ratio in paste. 4. The rougher the surface and bigger the surface potentials, the bigger the adhesive strength, but this relation is not linear.
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  • LATERAL LOADING TEST FOR A SEVEN-STORIED PRECAST APARTMENT BUILDING
    NAKAO NAKAGAWA, TATSUHIKO SAITO, HIROSHI YOSHIDA
    Article type: Article
    1967Volume 140 Pages 17-26,72
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_17
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    The seven-storied apartment building had been constructed by the large-sized precast concrete panel fabrication method in Hong Kong and in order to comfirm safety of the structure against a wind load, the lateral load test have been carried out. This report gives rigidity and strength of the structure derived from the load-displacement carve which was obtained by giving twice the designed load.
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  • GENERALIZED FORM OF A SKELETON CURVE OF STEEL FRAMES : I. ROLE OF STRAIN HARDENING IN PLASTIC THEORY OF STEEL STRUCUTRES
    S. IGARASHI, N. TAGA, Y. KOYANAGI
    Article type: Article
    1967Volume 140 Pages 27-40,72
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_27
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  • CHARACTERISTIC VALUES OF VIBRATION OF CANTILEVER SHEAR BEAM SIMILAR TO MULTISTORY BUILDING
    HARUTO NARITA
    Article type: Article
    1967Volume 140 Pages 41-46,72
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_41
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    In the previous paper, the continuous vibratory systems, such as the cantilever shear beams, were devised as the vibratory models of muttistory buildings so that their masses were uniformly distributed along the height and the lateral shearing ridigities were variant. Then, They had only one element of dynamic character, say "compound value of mass and ridigity". Observing the graphs of the compound values distribution of the 21 practical examples in the above paper, some assumptions of mathematical functions which are similar to them might be obtained, and the characteristic equations of the cantilever beams can be solved through introduction of these functions. These trials are studied in this paper. Comparing the natural periods and the shape functions of the equivalent cantilever beams with these of some practical examples of multistory buildings respectively, similarity between them seems satisfactory, especially so in the case of simply shaped buildings.
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  • EXPERIMENTAL STUDIES ON THE ULTIMATE STRENGTH OF REINFORCED CONCRETE SQUARE SLABS UNDER UNIFORM LOADING
    YOICHI HIGASHI, KIYOSHI KOMORI
    Article type: Article
    1967Volume 140 Pages 47-53,72-73
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_47
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    The plastic design methods of reinforced concrete slab have been based on Johansen's yield-line theory. However, A. J. Ockleston found that ultimate strength obtained by his experimental studis reached several times the calculated value by the yield-line theory, and this difference was due to the arching action in the slab. In this paper on reinforced concrete square slabs with four edge beams, the influences of the rigidity of edge beams, and the thickness of slab on elastic and plastic behavior of slab, especially mechanism of failure, ultimate strength and arching action were discussed. For this purpose four square slabs were tested and the next results were obtained. 1) In the case of a slab, even if flexural rigidity of edge beams is considerably large, the elastic deflection is large as compared with four-edge-clamped slab. 2) The slabs are divided into four triangular parts by the diagonal cracks at the final failure stage. 3) The ultimate strength of square slab with edge beams is far in excess of that predicted by Johansen's yield-line theory considering only the bending strength and the main reason for this is the arching action induced in the slab. 4) The effect of arching action in slab has a tendency to be large, when the thickness of slab is large, the edge beam is rigid.
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  • EXPERIMENTAL RESEARCH ON LOCAL FAILURE OF CHORD IN TUBULAR TRUSS JOINTS : 3. Influence of Variation of Chord Force and Comparison between K-Joints and T-Joints
    KENZO WASHIO, TAKESHI TOGO, NOBUYUKI MITSUI
    Article type: Article
    1967Volume 140 Pages 55-62,73
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_55
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  • ESTIMATION OF FIRE TEMPERATURE-TIME CURVE IN ROOMS (PART III)
    KUNIO KAWAGOE
    Article type: Article
    1967Volume 140 Pages 63-70,73
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_63
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    1. In this time an electric computer was used for the calculation on the estimation of fire temperature-time curve in rooms under more complicated conditions. 2. Theoreticaly the basic equation of heat balance in the room should be inculuded the rate of heat loss Q_r which is necessary for the air in the room warmed up to the fire temparature. In the previous reports Q_r was assumed negligible small. The difference of calculation results between including of Q_r and neglecting of it is quite negligible small. It is concluded that the heat balance equation described in the previous reports can be used to obtain the precise results. 3. The rate of burning in a room having different height of windows can be estimated roughly by adding of the rate of burning of each window. 4. In the previous reports the decay lines were assumed 10℃/min and 7℃/min, after all combustible has burnt out, as a safty factor. But the calculation results in this time shows that the previous assumption has included an unreasonable safety factor too much and the decay line described in the previous reports should be eliminated. If the safety factor is necessary some safety duration time should be added to the obtained duration. 5. The temperature-time curve in a room which has several interior surface having different thermal property can be obtained roughly to use a mean values of thermal property weighted by the area. But it is convenient for the estimation of internal temperature of enclosure to calculate the thermal transmission at each enclosure slab. 6. Although many different curves are obtained under the given conditions of the rooms, the standerd temperature-time curve for fire test is only one. The eqvalent fire test duration correspond to the estimated curve can be roughly obtained by use the same temperature-time area upon 400℃ or 500℃.
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  • [title in Japanese]
    Article type: Appendix
    1967Volume 140 Pages App1-
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_App1
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  • [title in Japanese]
    Article type: Bibliography
    1967Volume 140 Pages Misc1-
    Published: October 30, 1967
    Released on J-STAGE: August 22, 2017
    DOIhttps://doi.org/10.3130/aijsaxx.140.0_Misc1
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