Transactions of the Architectural Institute of Japan

[title in Japanese]

Article type: Cover
1969 Volume 166 Pages Cover1-
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_Cover1

JOURNAL FREE ACCESS

Download PDF (53K)
[title in Japanese]

Article type: Cover
1969 Volume 166 Pages Cover2-
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_Cover2

JOURNAL FREE ACCESS

Download PDF (53K)
[title in Japanese]

Article type: Index
1969 Volume 166 Pages Toc1-
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_Toc1

JOURNAL FREE ACCESS

Download PDF (46K)
[title in Japanese]

Article type: Appendix
1969 Volume 166 Pages App1-
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_App1

JOURNAL FREE ACCESS

Download PDF (21K)
EXPERIMENTAL STUDIES ON DIRECT ELECTRIC CURRING CONCRETE (Part III)

REIICHIRO FUKUDA

Article type: Article
1969 Volume 166 Pages 1-9,83
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_1

JOURNAL FREE ACCESS

Show abstractHide abstract

Physical properties on direct electric curring concrete are investigated. In this paper, kind of aggregate, kind of cement, the unit water volume, the sand-aggregate ratio, the quantity of cement, current, precurring time, and age which affect it were discussed. Each factor have 2〜4 levels. In extablishing the Experimental Plan, an orthonogonal table of type L_<32> (2^1+4^9) are apportioned. Rational specification was obtained by experimental result. Significant primary factor about compressive strength are age, kind of aggregate, kind of cement, and the quantity of cement. The method of fructural modulus is affected by age. The primary factors affect temperature of concrete are current and the unit water volume. Consumption of electric power were affected by current and precurring time. So rational specification was obtained by crush stone, blast-furnace cement and the unit of water volume 170l/m^3. Current is 4A (0.0005A/(cm)^2), sending time of current if 2 hours and precurring time is 1/2 hours. Sand-aggregate ratio and volume of cement are free.

View full abstract

Download PDF (909K)
A STUDY ON THE DURABILITY OF CONCRETE : The Degree of Expansion by Frost as a Measure of Frost Resistance of Concrete

EIJI KAMADA

Article type: Article
1969 Volume 166 Pages 11-17,83
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_11

JOURNAL FREE ACCESS

Show abstractHide abstract

Changes of the length of concrete specimens during freezing and thawing within the temperature range from 20℃ to 30℃ were measured by using a new testing apparatus. The tensile strength of the specimens were measured after 13 alternate freezing and thawing cycles. The new term, "the degree of expansion by frost (DEF)", was defined as a measure of frost resistance of concrete. Slow and rapid freezing and thawing tests were made for finding out the relation between DEF and the dynamic modulus of elasticity. A diluvial gravel, a crushed stone and several kinds of artificial lightweight aggregates, which show various properties to freezing and thawing, were used as coarse aggregates. Test results are as follows; 1) Oven-dry specimens give uniform thermal expansion, however, the saturated specimens using high water absorptive aggregates show abnormal expansion during freezing. And DEF of the specimens after 13 alternate freezing and thawing cycles gives value from 1000×(10)^<-6> to 3000×(10)^<-6>. In this case, the decrease in the tensile strength exceeds 50% of the initial strength. In case of low water absorptive aggregates, no expansion during freezing is observed, and increase in DEF and decrease in the tensile strength are very small. 2) DEF will indicate the grade of frost damage of Concrete, as there is a relation between DEF and the decrease in the splitting tensile strength or in the dynamic modulus of elasticity. However, the relationship between DEF and dynamic modulus of elasticity varies due to the difference of water-cement ratio.

View full abstract

Download PDF (972K)
EFFECTS OF SIZE AND QUANTITY OF AGGREGATE ON COMPRESSIVE STRENGTH OF CONCRETE (I)

HIDEO KAWAKAMI

Article type: Article
1969 Volume 166 Pages 19-27,84
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_19

JOURNAL FREE ACCESS

Show abstractHide abstract

The report presents the results of an experimental investigation on the compressive strength of concrete with particular reference on size and quantity of coarse aggregate. Several series of tests were carried out using single-size aggregate which are in narrow range of size. It is shown that the larger is pebble and the more aggregate is contained in concrete, the weaker is the concrete. When these relations are combined, the strength of one size aggregate concrete (glass marble or gravel) is expressed as a plane in a space co-ordinte, with different position according to the mortar strength which is mainly governed by water cement ratio. When the interface bond in ordinary concrete is the same with that of one size aggregate concrete, the compressive strength of the former can be expressed with the strength of each one size aggregate concrete and with each aggregate contents in present concrete. It is shown that the concrete has its own strength composition according to the quantity and the size of coarse aggregate.

View full abstract

Download PDF (1000K)
STRENGTH OF CONCRETE UNDER COMBINED COMPRESSION AND TORSION

YOSHIO KOSAKA, YASUO TANIGAWA

Article type: Article
1969 Volume 166 Pages 29-35,84
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_29

JOURNAL FREE ACCESS

Show abstractHide abstract

Practical expressions of Failure Criteria of structural light-weight and normal-weight concrete under combined compression and torsion were investigated. Consequently, the following empirical formulas in terms of F_<sp> and F_<cy> were obtained for the faiure criteria of the above mentioned concretes; [numerical formula] or [numerical formula] or [numerical formula] where, F_<cy> : compressive strength, σ_1, σ_3 : principal stresses, F_<sp> : tensile splitting strength, σ_y : axial compressive stress, σ : normal stress, τ_<xy> : torsional shearing stress. τ : shearing stress,

View full abstract

Download PDF (949K)
FLANGE BUCKLING AND ULTIMATE LOAD OF BEAMS UNDER MOMENT GRADIENT : Part II Buckling Load

YASUNAGA FUKUCHI

Article type: Article
1969 Volume 166 Pages 37-42,84
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_37

JOURNAL FREE ACCESS

Show abstractHide abstract

The restriction of the width-thickness ratio (b/t) of flange plates has been tried by many authors, in respect of the plastic. or limit Design. In their reports, plates are stressed by uniform normal stresses along their length. In the case of flange plates of beams, such plates exist only when beams suffer pure bending moment. Between beams under pure bending moment and those under moment gradient their behaviers and characters are different. Therefor, the buckling load of flange plates of beams under moment gradient must be thought differently from that of plates stressed uniformly along their length. In this report, it is shown that the flange buckling load of beams under moment gradient has possibility to be over the full-plastic-moment load of the beam and the restriction of b/t can be relaxed. But, concrete values of the restriction of b/t will be shown in Part-III after the analysis of ultimate loads and rotation capsities.

View full abstract

Download PDF (646K)
ELASTIC ANALYSIS OF SHEAR WALLS LOADED ANTIMETRICALLY WITH REGARD TO THEIR LONGITUDINAL CENTER LINE AND SYMMETRICALLY WITH REGARD TO THEIR TRANSVERSAL CENTER LINE PART II : Equations for Conditions which are Necessary to Define the Unknown Coefficients and Unknown Factor

MASAHIDE TOMII, IKUO TOKUHIRO

Article type: Article
1969 Volume 166 Pages 43-50,85
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_43

JOURNAL FREE ACCESS

Download PDF (595K)
ELASTO-PLASTIC TORSION OF THIN-WALLED OPEN SECTIONS

MAMORU KIMURA, TOSHIRO SUZUKI

Article type: Article
1969 Volume 166 Pages 51-57,85
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_51

JOURNAL FREE ACCESS

Show abstractHide abstract

This paper describes the torsional behaviour of thin-walled open sections, and deals with pure torsion and combined torsion with initial axial stress of bending moment. The narrow rectangular plate is chosen for this analysis and following assumptions are intraduced. (1) The field of small-deflection is considered. (2) The cross section is underformed and remains plane during torsion. (3) Statical behaviour of open section is equivalent to that of the gatharing of very thin-walled closed sections. (4) The yield criferion of the material is based on Von. Mises' law, and work-hardening is not taken into account. The approximate solution is obtained by nomographs for the combined torsion. The computed results are compared with the experimental results and they show good agreement under pure torsion. In case of torsion combined bending, the experimental result is investigated in early stage of twisting angle, because, when the initial bending about major axis is great, the specimen produces lateral deformation about minor axis with increasing angle of twist.

View full abstract

Download PDF (708K)
LIMIT ANALYSIS OF BEAM-COLUMN CONNECTIONS (VII-2) : Connections of Wide-flange Beam to Box-Column subjected to Bending and Thrust

Hisashi TANAKA, Tsuneo SHIGENOBU

Article type: Article
1969 Volume 166 Pages 59-64,85
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_59

JOURNAL FREE ACCESS

Download PDF (459K)
A STUDY ON THE SPATIAL DEVELOPMENT OF HEIAN-KYO (NOW KYOTO) IN THE LATE HEIAN PERIODE (2)

TAKEHISA KOTERA

Article type: Article
1969 Volume 166 Pages 65-74,86
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_65

JOURNAL FREE ACCESS

Show abstractHide abstract

On this part of the paper, some factors to influence the actions on the urban space are inquired. As for Mikado's palades etc., after Suzaku-Oji was abandoned, many routs could be takeable on grid plan as Heian kyo. but there existed some factors influenced on the decision of the rout. 1) Ritual factor. They prefered the rout of precedents as far as possible. But it varied according to rituality of the parade. 2) Religious factor. This based on the belief in Onmyodo idea which dominated ancient human action. There existed some taboo for time and space, especially for orientation. The orientation at that time was decided by compornents of a right-angular coordinates. This means that the actions based on Onmyodo were well matched with the grid pattern of the capital. Also on this idea, they used to keep away from mourning house fearing the spirit and a parade often made a detour. 3) Another factor. After late Heian periode, the rout of parades of Mikado or others were often changed according to the convenience of an attendance by retired Mikado. This means not only decline of Mikado's authority but that of ritual feather in this ancient capital. These tendency had gone parallel with decay of spacial order and change in its quality. Oji (major street) and Koji (minor street), which had run right-angularly at the same intervals and sparated from buildings by earthern wall, lost their, trict order and were reorganized according to more economical functions of the city. In this process, advent of street architectures as shops took an important role for change in spatial quality.

View full abstract

Download PDF (1918K)
THE AUDIENCE CHAMBERS IN THE IMPERIAL PALACE PLANNED BY J. CONDER (I)

SHIGEKATSU ONOGI

Article type: Article
1969 Volume 166 Pages 75-82,86
Published: December 30, 1969
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.166.0_75

JOURNAL FREE ACCESS

Show abstractHide abstract

The planning of the Audience Chambers at Yamazato in the Imperial Palace was commenced in May 1881 by J. Conder (Professor at the Imperial Collage of Enginnring, a〓itect and advisor to the form〓 Department of Public works and also to the Bureau of Imperial Palace Con〓; 1852-1920, M. R. I. B. A.) and the plans was prepared in July 1882. J. Conder improved the Reception Rooms at Akasaka designed by C. de Boinville hough was order〓 working on old lines and using old materials as much as possible. But this plan was gave up in April 18〓 In the present paper, the details of the progress after 〓 first planning and the outlines of the designs are described.

View full abstract

Download PDF (1575K)

Register with J-STAGE for free!