Transactions of the Architectural Institute of Japan

[title in Japanese]

Article type: Cover
1963 Volume 83 Pages Cover1-
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_Cover1

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[title in Japanese]

Article type: Cover
1963 Volume 83 Pages Cover2-
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_Cover2

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[title in Japanese]

Article type: Appendix
1963 Volume 83 Pages App1-
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_App1

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[title in Japanese]

Article type: Index
1963 Volume 83 Pages Toc1-
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_Toc1

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[title in Japanese]

Article type: Index
1963 Volume 83 Pages Toc2-
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_Toc2

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Experimental Studies Lightweight Aggregates made from Expanded Shale

HIDEHARU KAGA

Article type: Article
1963 Volume 83 Pages 1-6
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_1

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Shale expanded in a rotary kiln has been used as structural lightweight aggregates in U.S.A. since 10 years ago. Recently several eompanies in Japan began to produce these aggregates on trial. This report discussed properties of these expanded shale aggregates. Two kinds of these aggregates are given for this studies. One of them M consists of five and corse aggregates and another S 5 sizes sieved from five to corse. Natural sand-and-gravel and Haruna Pumice are used for the comparison. Tests on properties of these aggregates include gradiation, unit weight, specific gravity, vacant in aggregate, absorption and crushing strength. In order to examine properties of these concretes, all aggregates are ajusted to the standard gradiation and concretes are mixed with the same proportion and slump. Unit weight of fresh concretes, dryed weight, compressive strength, dinamic young modulus, drying shrinkage and absorption are tested. As the result of tests it is known that these expanded shale aggregates have more excelent properties as structural lightweight aggregates than Haruna pumice and the others. Their particles are rounded and smooth, and have a lot of isolated vacants in them. Though their bulk specific gravity are 1.2〜1.5kg/l and a litlle weighter than Haruna pumice, they have rather less absorption and larger crushing strength. Their concrete weight are 1.4〜1.6kg/l and about 60〜70% of sand-and-gravel concrete. Their compressive strength are 60〜80% of sand-and-gravel concrete and according to JIS A 5002, these aggregates belong to B or C class as the structural lightweight aggregates.

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General Solutions of Spherical Shell in State of Free Vibrations (1)

YOSHITSURA YOKOO, OSAMU MATSUOKA, HARUO KUNIEDA

Article type: Article
1963 Volume 83 Pages 7-14
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_7

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This paper is concerned with the general solutions of spherical shell in state of free vibrations. First of all, setting on the general equations of spherical shell, which contain all necessary solutions with the introduction of following functions, on the basis of displacement components, [numerical formula] [numerical formula] authers got general solutions of free vibrations of spherical shell. But for the convenience of practical uses, expression method with stress function is considered for this state, secondarily. After the explanation that the expression with stress function does not give all necessary solutions even in static state, that expression was expanded to kinematic state. Comparing this expression with X, Y-expression, authers compensate lacked solutions from solutions of X, Y-exp. Setting stress resultants with stress functions as follows, [numerical formula] [numerical formula] [numerical formula] authers get[numerical formula] as necessary condition, but in this case compatibility condition is identically sufficed and it becomes as follows, [numerical formula] Therefore the lack of two solutions is apparently expected. Then from the comparison with X, Y-expression solutions, solutions(X=0, Y≠0) where Y: solutions of [numerical formula] must be compensated. Here all general solutions of spherical shell in state of free vibrations are shown as the expression of Legendre Bi-Function.

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Approximate Evaluation of Natural Frequencies for Lateral Vibrations of Non Shallow Spherical Shells

YOSHIKATSU TSUBOI, SHIGEYA KAWAMATA

Article type: Article
1963 Volume 83 Pages 15-22
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_15

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The object of the paper is to give formulas for approximately evaluating natural freqencies of lateral vibrations of edge-supported spherical shells, which are essential in aseismatic design of tanks, pressure vessels and containing buidings. From restricting the argument to the rigid body displacements-a translations and a rotation which constitute the most part of lateral displacement, resulted simple formulas for natural periods of vibration by static analysis of spring constants. Comparison of the rigid body displacement with static displacement curve, from which the former was extracted, suggests that the formulas give fairly good results. Formulas are given for shells whose edges are clamped or pin-supported, and are presented cuves of natural periods of steel spherical shells for variety of dimentions.

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Tests on the reinforced concrete columns under combined loading

AKIO IKEDA

Article type: Article
1963 Volume 83 Pages 23-30
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_23

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This paper presents the results of a series of reinforced concrete column test under new type of combined loading. The test procedure is as follows; the specimen is set up vertically and loaded with constant axial force N(σ_0=N/A=40kg/cm^2 or 100kg/cm^2) and the lateral load (H) is applied at the center of its height (span length l=80cm). The specimen has 15 by 15cm cross section and has longitudinal reinforcement of p_t-p_c&eDot;0.5% and the stirrup of 5 or 10cm spacing. Summing up the results of this tests, it found that: 1) The column subjected th σ_0=40kg/cm^2 has very rich ductility and behaves just like the beams subjected to bending moment. For one way loading about 1/20 and 1/10 of the maximum deformation R(2δ/l) are obtained for the specimens with stirrups of 10cm spacing and 5cm spacing respectively, and for alternate loading about 1/40 and 1/20 are obtained for the specimens with stirrups of 10cm spacing and 5cm spacing respectively. 2) The column subjected to σ_0=100kg/cm^2 has poor ductility. In this case the max. deformation R for each loading condition and spacing of stirrups is obtaind to be about half or less than it of that in case of σ_0=40kg/cm^2. 3) In case of σ_0=40kg/cm^2 the max. lateral load H for alternate loading is about 90% of that for one way loading, while it is about 80% in case of σ_0=100kg/cm^2. 4) Stirrups are quite effective to add more ductility to the columns subjected to combined loading.

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An Extension of the Generalized Slope Deflection Equation Method to Elastic Buckling

MINORU MAKINO

Article type: Article
1963 Volume 83 Pages 31-36
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_31

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In analysis of structural frames the effect due to axial force for straight members is usually ignorced for the moment distribution. In this papers this effect is considered for moment distributions in the straight member of uniform corss section with solving usual differential equtions (1-a) and (1-b). Consequently the modified slope deflection coefficients for bending depending upon the intensity of axial force introduced to the generalized slope deflection equations which are reported previously by the author. These coefficents are identical with those represented in several referred papers and are given in Fig. 2, but in which is a new coefficient for end force equations. In equations (1-a) and (1-b), the applied loads are expanded with Fourier sine series which is available to use for various loading cases, then the fixed end moments and fixed end forces are also expressed with modified coefficients. The procedure of analysis is nearly the same as mentioned before by the author. The result can be optained with the successive approximation if the determinant of the stiffness matrix is not zero. When the determinant becomes zero which yield critical values for buckling. In view of engineering the lowest one is practically important. Examples in Fig. 6 and 7 are given to illustrate a feature of analysis in braced frames.

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[title in Japanese]

[in Japanese]

Article type: Article
1963 Volume 83 Pages 37-39
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_37

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[title in Japanese]

[in Japanese]

Article type: Article
1963 Volume 83 Pages 40-44
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_40

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[title in Japanese]

[in Japanese]

Article type: Article
1963 Volume 83 Pages 45-48
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_45

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[title in Japanese]

Article type: Appendix
1963 Volume 83 Pages 49-50
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_49

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[title in Japanese]

Article type: Appendix
1963 Volume 83 Pages 50-51
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_50

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[title in Japanese]

Article type: Appendix
1963 Volume 83 Pages 51-
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_51_1

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[title in Japanese]

Article type: Appendix
1963 Volume 83 Pages 51-
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_51_2

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[title in Japanese]

Article type: Bibliography
1963 Volume 83 Pages 52-54
Published: March 30, 1963
Released on J-STAGE: August 30, 2017

DOIhttps://doi.org/10.3130/aijsaxx.83.0_52

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