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Volume 95
Displaying 1-10 of 10 articles from this issue
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Article type: Cover
1964 Volume 95 Pages Cover1-
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSDownload PDF (31K) -
Article type: Cover
1964 Volume 95 Pages Cover2-
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSDownload PDF (31K) -
Article type: Index
1964 Volume 95 Pages Toc1-
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSDownload PDF (42K) -
Article type: Appendix
1964 Volume 95 Pages App1-
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSDownload PDF (136K) -
MICHIO UEDAArticle type: Article
1964 Volume 95 Pages 1-6
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSThe author offers the method of determining water cement ratio for concrete of Portland blast-furnace cement, of pozzolanic cement and of heigh-early-strength Portland cement. He prepared 4 sets of multifactorial experiments in orthogonal arrays; L_<18>(2^1×3^7), L_<54>(2^1×3^<25>), L_<31>(3^<40>) and L_<32>(2^<31>). Factors and levels are about alike in each case though some difference exists in details. Always 3 or 4 kinds of cement was picked up as the levels of cement-factor. They are Portland blast-furnace A, B, pozzolanic B, Portland and high-early-strength Portland cement. (1) He analyses the data in each case and gives partial conclusions in reference to every set of experiment. The results of the 4 sets do not always coincide with one another; in certain cases the estrangth clearly differs in compliance with the kinds of cement and yet we can find no significant difference in other cases. The interaction effect in strength between water-cement ratio and sand is sometimes significant and sometimes is not. (2) In spite of such partial disagreement those experiments are almost equivalent in accurracy and in average strength of concrete. So the author separated concrete strength formulae for each kind of cement from every set of the experiment and after that he put them together respectively in one formula for each kind of cement. (3) Comparing the above 3 formulae, he drew the following conclusion. a) The linear gradients of the 3 formulae do not differ significantly. b) The average strength, denoting in F/K, differs one another, where F is 4 week strength of concrete and K is that of cement. c) Approximately speaking, F/K of h.-l.-s. Portland cement is 110%, F/K of Portland b.-f. cement is 90% as compared with that of Portland cement.View full abstractDownload PDF (731K) -
HIROYOSHI KOBAYASHI, TATSUO MOGAMIArticle type: Article
1964 Volume 95 Pages 7-12
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSAuthors studied a method of response analysis on the tall buildings, whose structure are space frame, due to strong earthquake by using electric digital computer, and completed the programing of this problem for computer. They checked on the accuracy of this numerical analysis and obtained the conclusion as follows; I) About the time interval of one step of calculation, that is computed by method of step by step, ⊿T=0.01 see. is adequate. II) The accuracy of the time of earthquake accelerogram is effective to the result of this response analysis on the building.View full abstractDownload PDF (748K) -
HIROSHI KITAMURAArticle type: Article
1964 Volume 95 Pages 13-21
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSIn the previous reports, various references were made to the studies of the statically determinate spaced trusses by introducing difference equation for solving the problems. However, in addition to the conditions of equilibrim, the statically indeterminate structures must be checked on the basis of deformation theory together with the grid girders which bring forward the problems of resemblance in conditions of stress with the statically indeterminate spaced trussed flat plates. To deal with the problems, firstly, the equilibrim of bending moments and shears at the intersecting grid points are obtained by difference equation neglecting the twisting moments and assuming that grid girders are in isotropy conditions. Secondly, by using the "method of elastic weights" in the grid points, the relations of bending moments and vertical displacements are expressed in form of difference. Then, we obtain the difference equations of displacements or bending moments by substituting the former equation into the latter. Thus its approximate formulas are obtained by assuming the shearing rigidities. To ascertain the probability, we have checked "difference pattern" at each points in accordance with the various boundary conditions on the several examples by computing the linear equations to determine these difference equations and the results obtained on each case proved that the suggested approximate formula can be used with ease and its error may be considered negligibly small compared with the values obtained from the established formulas. The above method is excellent especially in case of multiple grids as the use of electronic computers broaden in scope, and is considered to be most useful for wider and practicable application.View full abstractDownload PDF (776K) -
YASUHIKO SHIBUYAArticle type: Article
1964 Volume 95 Pages 22-26
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSThis report is the study of the structure of simple wall body suitable for farmers' house which has been constructed, using the panel of MOKU-MO cement board (wood fibre cement board). I devised so that the farmers themselves might make all the process of the panel, the construction of the wall structure and paid attention so that the function, the durability as the wall structure might be kept long enough. The Panel is two Moku-Mo cement boards of 60×90cm fixed by pieces of wood. The joint used in joining up the two is reinforced concrete. Acceding to my experiment, the size for making of the panel, the procedure for making it, and the device of the wall structure was suitable for farmers' requirement among farm village tody at the price, the weight, and the durability.View full abstractDownload PDF (1129K) -
SATOSHI MIYAZAWAArticle type: Article
1964 Volume 95 Pages 27-32
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSThe guest-room of Japanese farmhouse has been completed under the influence of SHOIN-ZUKURI (SAMURAI-house). They have TOKONOMA, and TANA, a kind of fixture. Generally, the guest-space is composed of two on three TATAMI rooms. They are separated by sliding doors (FUSUMA, SHOJI, ITADO etc.) each other. These sliding doors are movable partition. If you take away that partions, you are able to use them as one room. This is peculiarity to the guest-room of Japanese house. There is some difference between districts about chronological date of completion of the guest-room. Generally, we consider that we can assess the date from 17th century to 19th century. In Kyoto, Nara, Osaka and the district (Kinki district) it is about 17 the century, Tohoku district, about 19th century. We have not been able to assess the exact date. I have researched about th farmhouse of Yachiho-Village and its documents which are records when the house was built, and I could know that the date the guest-room has been completed in Yachiho-Village. It can be assessed to 1730-1745. The upper class of farmer (SHOYA, NANUSHI etc.) needed the guest-room for the reception of SAMURAIS, at that time in this district.View full abstractDownload PDF (1102K) -
Article type: Bibliography
1964 Volume 95 Pages 33-34
Published: February 28, 1964
Released on J-STAGE: August 30, 2017
JOURNAL FREE ACCESSDownload PDF (170K)
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