Transactions of the Architectural Institute of Japan

[title in Japanese]

Article type: Cover
1968 Volume 147 Pages Cover1-
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_Cover1

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[title in Japanese]

Article type: Cover
1968 Volume 147 Pages Cover2-
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_Cover2

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[title in Japanese]

Article type: Index
1968 Volume 147 Pages Toc1-
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_Toc1

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[title in Japanese]

Article type: Appendix
1968 Volume 147 Pages App1-
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_App1

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ON THE MECHANICAL CHARACTERISTICS OF A HYPERBOLIC PARABOLOIDAL FOUR MASS SYSTEM REPRESENTING HANGING ROOFS

KOICHIRO HEKI, EIJI KIMOTO

Article type: Article
1968 Volume 147 Pages 1-8,71
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_1

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This paper deals with a hyperbolic paraboloidal four mass system which is considered to be the simplest network of hanging roofs. Consisting of hanging, pretensioning and bracing cables, the present system is analyzed by the small deflection theory. Investigation is made of the characteristics of the deflections, the natural frequencies and the corresponding modes. The following results are obtained from this study. 1) In case of doubly threaded nets, the prestressing takes much effect on the natural frequency of the antisymmetric mode defined in this paper. 2) In case of quardruply threaded nets, the bracing members put restrictions on the oscillation of the above mentioned mode. On the natural frequency, the prestressing is not so effective but these bracing members give remarkable effects. On the basis of this study, some suggestions are made for the practical design of hanging roofs.

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STRESS ANALYSIS BY NON-EQUIDISTANT FINITE DIFFERENCE METHOD

KENJI SUGIHARA

Article type: Article
1968 Volume 147 Pages 9-18,71
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_9

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FLANGE LOCAL BUCKLING IN PLASTIC RANGE

BEN KATO, YASUNAGA FUKUCHI

Article type: Article
1968 Volume 147 Pages 19-25,71
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_19

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Strength and rotation capacity of steel members is much affected by the local collapse of plate elements. Therefore, many reports have been reported and they have dealt with the initiation of local buckling. But in most cases the deformation of the members can develop without any decrease in strength. These phenomena may be attributed to the post yielding property of the material especially strain-hardening property. In this paper, the post buckling characteristics of plate elements are analysed and comparison with test data is made. In this series of tests. twelve beams, made of SS 41, SM 50 and YES 40, whose flanges' width-thickness ratio is between six and twenty, are tested under pure bending. We have got good agreement of experimental results with theroretical ones.

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DESIGN AND ANALYSIS OF A DOME COMPOSED OF CONNECTED UNIFORM ISOSCELES TRIANGLES : Observation of Wind Pressure Coefficients and Theoretical Analysis under Wind Load

ISAMU KAMEI, JIRO SUZUYA, YOSHIYUKI TSUSHIMA, NOBUO YAMAGUCHI, ISSEI K ...

Article type: Article
1968 Volume 147 Pages 27-32,72
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_27

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In this paper, we present results of wind pressure test on model octagon dome, and results of stress & strain analysis of the dome under wind load. The distribution of wind pressure coefficient is, on the whole, similar to that of hemisphere, but somewhat different locally, especially near around eight ridges. Results of calculation are as follows : 1) The summit of the dome goes downward but horizontal displacement is very little. 2) The natures of stresses and strains are generally same as that turned inside out under vertical load. 3) Most of members on the dome with ordinary scale designed under vertical load are safe against wind pressure.

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EXPERIMENTAL STUDY ON TENSION-TYPE HIGH STRENGTH BOLTED CONNECTION : No.2 PRYING ACTION

BEN KATO, ATSUO TANAKA

Article type: Article
1968 Volume 147 Pages 33-41,72
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_33

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The influence of the prying action upon the strength of bolted counections, which are subjected to tensile force, are investigated by experiments, using various types specimens of T-stub connection. The main conclusions are as follows : when the thickness of T-flange is small, the strength of the connection is greatly influenced by prying action. Prying force is approximately quantified according to beam theory on the assumption, that T-flange is regarded as a beam, and prying force is considered as a concentrated load. The main factors, which are concerned with prying action, are the thickness of T-flange and the distance between the bolt and T-web. This approximate theory is also applied to unsymmetric T-stub connection as it is. The prying force coefficient (which means the ratio of the prying force to the external tensile force) at ultimate state is approximately a half of the coefficient at separation. When the thickness of T-flange is very small, bending of the plate prevails. The ductility of the connection is very little, while the fracture of bolts prevails. This Tendency gets evident, as T-flange gets thicker and the connection gets stronger. The thickness of flange plate of H-member, which is connected to T-flange, has little influence upon the statical characteristics of the connection, so for as our experiments concern (the thickness varies from 12mm to 25mm, while the diameter of bolt remains 19mm).

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DYNAMICAL CHARACTERISTICS OF STRUCTURE WITH PILES BY INCREASING OF VACANCY BETWEEN BASE OF FOUNDATION AND SOIL

Shizuo YAMAMOTO, Takashi SEKI, Shoichi MATSUNAGA

Article type: Article
1968 Volume 147 Pages 43-51,72
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_43

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ON THE SUITABLE PERIODS AND RATES FOR INTENDED REPAIR

HIROSHI IIZUKA, SADATO MASHITA

Article type: Article
1968 Volume 147 Pages 53-59,73
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_53

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The purpose of this research is to gain a standard of repair, suitable periods and rates for intended repair. At first, as I must know how wearing of buildings change with age or etc., I investigated several researches about wearing of every part of buildings : that is, 1) Research on the Wear of buildings. 2) On the Wear of Asphalt-Built up Roofs. 3) Research on Wearing of Steel Sash. 4) Research on Wearing of the Former Osaka. Central Telegraph Office Building Then, I applied the economical theory of facilities investment and calculated the economical repair time. At last, from those practical researches and economical calculations, I gained the standard of suitable repair periods and rates of every building part and every finishing.

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RELATION BETWEEN QUANTITY OF BUILDING ELEMENT AND ITS COST IN THE CASE OF APARTMENT HOUSE : Study on B.E. Quantity 3

ISAO TUKAGOSHI

Article type: Article
1968 Volume 147 Pages 61-69,73
Published: May 30, 1968
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.147.0_61

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What is acquired in this series of study (Study on B.E. Quantity I, II) could be highly appliable especially to cost study. Study 3 is one of the examples of its application to the cost study of apartment houses. Generally, cost study includes two phases of study; one is on unit cost of Building Element and the other on quantity of B.E. The former means the studies on the selection of construction method or material, and the latter means the study on the distribution of the quantity to each part of building which is caused from the characteristics of the design. Naturally this study belongs to the latter type of analysis, and it aims to determine the distribution of cost not by the usual method of using the practical data but by the theoretical method which is based on the theory of B.E. Quantity. The summary of this paper is as follows; 1) Introduction. 2) Relation between the cost and the amount of stories; In accordance with the increase of the height of building (under the condition of total floor area being constant) such quantities as of perimeter wall, partition wall, roof, and other elements would be changed. Consequently, the change of total cost would be expected, and we have studied the fluctuation of the cost and tried to acquire the point of minimam cost. 3) Relation between the total floor area and the cost per square meter of floor area. The usual method of rough cost estimate has been, so to speak, floor area method, but it has inevitably the possibility of much error. In this chapter, making use of the theory of B.E. Quantity, we show the range of the accuracy expectable for this method. 4) Relation between the cost and the proportion of the square plan of an apartment : The proportion means the ratio of the width per the length of a dwelling in an apartment house. Even if the total floor area is constant, the ratio can be variable, so that total cost cannot be considered constant. In this relation, as well as the case of the chapter I, minimam cost point can be found. After all you can see that it is determined only by the ratio of unit cost of several building elements.

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