Transactions of the Architectural Institute of Japan

[title in Japanese]

Article type: Cover
1970 Volume 175 Pages Cover1-
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_Cover1

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[title in Japanese]

Article type: Cover
1970 Volume 175 Pages Cover2-
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_Cover2

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[title in Japanese]

Article type: Index
1970 Volume 175 Pages Toc1-
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_Toc1

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[title in Japanese]

Article type: Appendix
1970 Volume 175 Pages App1-
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_App1

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STUDY ON EFFECTS OF VIBRATIONS ON BOND STRENGTH OF CONCRETE CAST INTO BENTONITE SUSPENSION

YASUHIRO YAMAMOTO

Article type: Article
1970 Volume 175 Pages 1-7,101
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_1

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This paper is intended to study the effects of the vibrations on the bond strength when they are applied to the reinforcement of the bentonite suspension. The bond strength of the concrete cast into the bentonite suspension is said to be lower as composed with that of the concrete cast in normal way. But as the results of this experiment, the bond strength of the bentonite concrete to the deformed bars become as heigh as (more than 75% of) the normal concrete when the bars are vibrated during casting. The compressive strength of the bentonite concrete cast with vibration is much the same as that of the bentonite concrete cast with no vibration. But the Young's modulus of the bentonite concrete with vibration is slightly lower than that of the bentonite concrete with no vibration.

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ULTIMATE STRENGTH OF H-COLUMNS UNDER BIAXIAL BENDING (Part I)

JUN SAKAMOTO, ATUNORI MIYAMURA, MASAO WATANABE

Article type: Article
1970 Volume 175 Pages 9-15,101
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_9

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Analytical and experimental investigations on biaxial bending of H-columns are reported. Reports consist of three parts. In Part I there are described on numerical analysis of H-columns subjected to thrust load and biaxial bending neglecting torsional effect. Experimental investigations and accurate analysis with account of torsional effect is reported in Part II and Part III. In the elastic-plastic analysis of this paper approximate procedure are used to satisfy the equilibrium equation at N's points in the member. Numerical results are presented in the form of interaction curves for arbitrary moment distributions. These results are compared with experimental and analytical results with torsional effect in the following reports.

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LOAD-DEFLECTION BEHAVIORS AND PLASTIC FATIGUE OF WIDE-FLANGE BEAMS SUBJECTED TO ALTERNATING PLASTIC BENDING : PART I EXPERIMENTAL INVESTIGATION

Ryo TANABASHI, Yoshitsura YOKOO, Minoru WAKABAYASHI, Tsuneyoshi NAKAMU ...

Article type: Article
1970 Volume 175 Pages 17-29,102
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_17

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SPECIFIC CHARACTERISTICS OF EARTHQUAKE AND A PREDICTION OF EARTHQUAKE MOTION ON A GROUND SURFACE (Part 1)

HIROSHI YAMAHARA

Article type: Article
1970 Volume 175 Pages 31-37,102
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_31

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In the discussion of a dynamic behavior of ground motion during earthquake, an analytical model as multireflection system or lumped mass system has been considered. Howeverr the snslytical model representations of surface layer would be accompanied by various difficulties, because the composition of actual soil layers and the mechanism of wave propagation would be too complex to represent by simply idealized model. The proper dynamic characteristics of surface layer can be obtained from observation of actual earthquake records, even if the analytical structure of the soil ground could not be made clear. In this study, a dynamic behavior during earthquake are argued by using the resultant characteristics of surface layer obtained from observations in their exact conditions, and the analytical structure of which is kept from taking into account. Owing to the recent progress of high speed computer, the technique of frequency analysis of earthquake motion has remarkably advanced. This study is an original proposal using high speed computer which has made it possible to carry out this method of thought. This method would be more practical than the past analytical methods because a characteristics of surface layer is given in such a form as it is. In this paper part 1, only the peculiar characteristics of earthquake motions were discussed which were required as a preliminary work to introduce this method.

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STUDY OF THE WIND PRESSURE FLUCTUATIONS IN THE STRONG WINDS, AND THE DYNAMICAL EFFECTS (Part 1)

TERUO HIROKI

Article type: Article
1970 Volume 175 Pages 39-48,102
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_39

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We had measured the wind pressure fluctuations in the strong winds for research of the it's dynamical effects on the steel towers. The gages for measure the wind pressure fluctuations, is the strain gage type gages that reconstructed the soil pressure gage. At used it, we had confirmed the character of wind velocity and direction by experiment at the wind tunnel, and obtained the experimental formulas. This special pressure gages mounted on the transmission steel tower near the sea coast, and reseached the relation between the averaging times and gust factor. More-over, this report is state the results that reseached the relation between averaging times and amplitude components of each periods by Fourier analysis about the wind pressure fluctuation records. Then, from the results, calculated the spectra densitys of wind pressure, and the dynamical magnification Kr of the displacement at resonance of single mass system. The results of it, we had obtained the experimental formulas of mean values at Kr, and the deviation values of it.

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EXTENDED KANI METHOD IN CONSIDERATION OF BOTH AXIAL DEFORMATION OF COLUMNS AND SHEAR DEFORMATION OF JOINT-PANELS

MINORU TOMIZAWA

Article type: Article
1970 Volume 175 Pages 49-61,103
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_49

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LATERAL TORSIONAL BUCKLING OE KNEE MEMBERS OF FRAMES

TOSHIRO SUZUKI, ISAO KUBODERA

Article type: Article
1970 Volume 175 Pages 63-68,103
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_63

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It have been often reported that some frames jumpt out laterally at the corner crossed beam and column, and frames came to collapse. When we consider the stability of steel structure, in any way we severally analyze each members, for instance beam or column. This method is valid when the members are laterally braced at the point of end connection with the other members. But steel frames often have no lateral bracing members at the point, or only tention flange is braced. In thise cases frames are in danger of laterally jumping out at the corner. We consider thise phenomenon to be lateral torsional buckling of one member composed by beam and column. By numerical analysis we explaine fundermental charactors of thise phenomenon, and in order to discover unsuitable points of this analysis we make an experiment on model knee members of frame.

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EXPERIMENTAL STUDY OF THE INELASTIC STEEL BEAM (3) : Beam Bracing on The Both Sides of Plastic Hinge

TOSHIRO SUZUKI, TETSURO ONO

Article type: Article
1970 Volume 175 Pages 69-74,103
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_69

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In the previous papers (1), (2), authors treated of the support space-versuse-the rotation capacity relationship of the beam under uniform moment and moment gradient. In this paper, we make clear the rotation capacity, lateral support space, and the behavior of local buckling about the lateral bracing beam on the both sides of plastic hinge. In these experiments we planed two new apparatus in order to experiment the elastic-plastic beam including the experiment, Vid. Fig. 2, Fig. 3). The moval reaction point apparatu showing Fig. 3 is took away faults that the reaction point restrains the deformation at the loading point or the center of loading moves after deformation. (Vid. Fig. 4) In order to examine the propriety of two apparatus we try to experiment the buckling of the elastic-plastic beam. As a result of these experiment we confirm that these two apparatus exhibit the arranged capacity. Then, we try to experiment the plastic design beam using these appartus, and we obtain the following results. i) As a result of the completion of these apparatus, we can experiment with the beam in elastic or plastic range of every kinds. ii) The supports space of bracing beam on the both sides of plastic hinge is property 50 ry.

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CHILDREN'S PLAYLIFE, PLAYFIELD AND THE MOTORCAR TRAFFIC RESTRICTION IN LIVING CONDITIONS (Part I)

MORIAKI HIROHARA, RIUICHI KANEYAMA, [in Japanese], ISAO NAKAMURA, [in ...

Article type: Article
1970 Volume 175 Pages 75-82,104
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_75

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At the present time, to the destruction of living conditions which is already drived into by motorization, how to break through by way of a present emergency measure, we propose a gradational plan of the motorcar traffic restriction. In this report, we prove that our propasal is actually able to do by the next points. 〓 the actual condition of motorcar uses-(a) The diffusion rate is 40%. In the residence section, the motorcar for attending office is 50%, for business is about 40%. (b) The number of times coming and going of a motorcar in the residence section are almost three times per one day, the rate driving all day is less than 10%. (c) As the parking by roadsides is 40% in daytime, on this side, the road is occupied the car, too. 〓 the actual condition of the infringement in children's playlife-(a) Main playing fields of children, about infant and law grades of the elementary school, are in front of their home or at the alley on their neigborhood. And their main reason is because of safty. (b) The sufferer rate of the child in traffic accidents is 13%, and plus cases of just before, the majority of children have dangerous experiences of the traffic accidents. (c) In these traffic accidents, about 60% is at playing or going and returning times at their playing fields. (d) The traffic accidents are more boys than girls, but there is no difference about the cases of just before. 〓 The inhabitants reaction to the restriction of motorcar traffic-(a) About the inhabitants reactions, in the residence places, the child protectors about 70%, support the traffic restriction. (b) These are some difference between possessor and unpossessor of motorcar about the restriction ways. (c) The drivors 64% need some restriction, but about its ways, there is no clear.

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SEASONAL FLUCTUATION OF CONSTRUCTION LABOR (III) : Regional Differences of the Seasonal Patterns

RYOICHI SHIMADA

Article type: Article
1970 Volume 175 Pages 83-90,104
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_83

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We can find some regional differences in the seasonal patterns of the construction labor calculated from the data of the monthly labor survey. The monthly total man days of the construction laborers decreases in winter in the northern prefectures like Hokkaido or Akita, but it decreases in summer in the southern prefecture like Tokushima. In any prefectures, the monthly total man days of the non.production workers (manager, engineer and clerical workers) does not fluctuate as much as the production workers. We can find some interesting facts by comparing the seasonal patterns of the hours worked by the production workers in construction industries, with those of the sales of portland cement as shown in Fig. 3-1〜3-11. There is a significant similarity between the two patterns especially in the northern or southern prefectures like Hokkaido or Tokushima of which the magnitudes of the seasonal patterns are comparatively big. There are some differences of patterns which are common to some prefectures. For example, the patterns of labor in Iwate, Akita, Chiba and many other prefectures have a peak in July, but the patterns of cement have no apparent peaks. We cannot find two sharp peaks in December and March of the labor patterns as those of cement sales. In most prefectures the levels of cement exceeds the level of labor about two or three months before the cold season. In warmer prefectures, such months are a little close to winter, compared with the colder prefectures.

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THE STUDY OF THE SALE AND RECEPTION ROOM OF THE KAITAKUSHI (XIII)

AKIHISA ENDO

Article type: Article
1970 Volume 175 Pages 91-97,105
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_91

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It is well-known that the interior decoration of the Sale and Reception Room tof the KAITAKUSHI was designed in a Japanesque style by J. Conder. But the concrete figures remain unexplained. This report as the part of the Study of the Sale and Reception Room of the KAITAKUSHI gives a description of the Japanized taste for textile goods in the interior decoration of the building from materials owned by Hokkaido prefectual Government.

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[title in Japanese]

[in Japanese]

Article type: Article
1970 Volume 175 Pages 99-
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_99

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1970 Volume 175 Pages 100-
Published: September 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.175.0_100

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