Transactions of the Architectural Institute of Japan

[title in Japanese]

Article type: Cover
1970Volume 177 Pages Cover1-
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_Cover1

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[title in Japanese]

Article type: Cover
1970Volume 177 Pages Cover2-
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_Cover2

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[title in Japanese]

Article type: Index
1970Volume 177 Pages Toc1-
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_Toc1

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[title in Japanese]

Article type: Appendix
1970Volume 177 Pages App1-
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_App1

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PUMPING PRESSURE OF FRESH CONCRETE IN PIPELINES : Part 1 : Rheological Properties of Fresh Concrete and Analysis of Pumping Pressure

SENSUKE KARASUDA, SHIGERU MORINAGA, KAZUNORI NARITA, JUNJI TAKAGI, HIR ...

Article type: Article
1970Volume 177 Pages 1-5,108
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_1

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The flow condition and pumping pressure in pipeline leave a large room for investigation concerning to concrete pump in spite of its wide use. The theoretical study on the rheological properties of fresh concrete was carried out with aid of experiments using viscometer. The conclusions are as follows : (1) The fresh concrete can be regarded as Bingham's body which has a yield point of δ and a plastic viscosity ofηp1. (2) The fresh concrete flows in the pipe forming a solid plug which has a cross section equal to that of the pipe. (3) The frictional stress between the solid plug and the inner surface of the pipe is expressed as a function of the velocity of the solid plug. (4) From the results mentioned above, equations were obtained which express the pressure and pressure loss in straight pipe, bent tapered pipe.

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STUDIES ON ULTRASONIC ANGLE BEAM TESTING FOR STEEL WELDS (Part 2) : A Considration on Estimating the Defect Lengthes by D_e Method

TOSHIAKI FUJIMOTO

Article type: Article
1970Volume 177 Pages 7-13,108-109
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_7

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On part 1 we picked up such seven methods for estimating the defect sized as D_<max> method, D_x method, D_e method, D_s method, X_<max> method, X_e method and X_s method. On this paper we theoritically considered the D_e method for estimating the defect lengthes and examined the theory by the lateral scanning along the widthes of the artificial slits. The D_e value in D_e method is 6 becibels when 2 a/√<λR> is larger (about over 1.5), but when 2 a/√<λR> is smaller (about under 1.5), we must take smaller D_e value than 6 decibels. When the defect size is smaller, the estimated defect length by D_e method in which the D_e value is 6 decibels will be 1.39λR/mπ. Where D_e method : The method for estimating the defect size by locating the points at each end at which the indication amplitude drops D_e decibels, and measuring between the points from the center of the transducer at one end to the center of the transducer at the other end. R : The Beam Path Distance 2a : The Defect Length 2m : The Crystal Sizeλ : The Wave Length

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THEORY OF THE CHAIN CONSTRUCTION WITH ELASTIC JOINTS (6) : Limit Analysis of the Chain Plate (1)

HOKATO EGAMI

Article type: Article
1970Volume 177 Pages 15-24,109
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_15

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In the previous paper, the author reported the theory of the Chain Construction with elastic joints from the results of the experimental study on the Sandwich Curtain Wall. It was shown that the theory could be applied to the wall with close approximation in its vertical direction. From the results of the other experimental study, it was shown that the theory could be applied to the each and every construction with elastic joints (Chain Plate). The present paper shows that this theory could be applied to the new Building Element consisted of slab unit and ceiling unit, by the experimental study on this Building Element. And approachability of limit analysis on the Building Elemeut are found to be possibe as the result of an experiment on the element with special joints.

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STUDY ON ASEISMATIC ELASTIC DESIGN BY STATISTICAL METHOD

YOSHIAKI NAKAO

Article type: Article
1970Volume 177 Pages 25-34,109
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_25

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Such steel structures as steel stacks, boiler frames, etc. are usually designed by the elastic theory. The author tried to establish the method of the aseismatic elastic design by statistical method. First be derived the formulae to estimate the response of general structures to the ground motion of two perpendicular directions, assuming that the seismic phenomena is a steady, Gaussian, and ergodic process. These formulae are proved to have sufficient accuracy by the random shaking table tests for the models of several framed structures. Second he applied the theory to the actual seismic waves, introducing the concept of the average earthquake continuation time. Finally a practical response specrum is proposed, which covers the whole response range to the seismic wave recorded in the past.

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LOAD-DEFLECTION BEHAVIORS AND PLASTIC FATIGUE OF WIDE-FLANGE BEAMS SUBJECTED TO ALTERNATING PLASTIC BENDING : PART III STEADY-STATE THEORY

RYO TANABASHI, YOSHITSURA YOKOO, TSUNEYOSHI NAKAMURA

Article type: Article
1970Volume 177 Pages 35-46,109
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_35

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FOURIER ANALYSIS OF A SHALLOW HYPERBOLIC PARABOLOIDAL SHELL WITH GENERATOR BOUNDARIES : I. On the General Solution of the Marguerre-Vlasov Equations

YOSHITSURA YOKOO, KAZUO MIZUNO, HIROYUKI MATSUNAGA

Article type: Article
1970Volume 177 Pages 47-58,110
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_47

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STRESS ANALYSIS OF T TYPE BEAM-COLUMN CONNECTIONS (I)

TOSHIO OKOSHI

Article type: Article
1970Volume 177 Pages 59-67,110
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_59

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EARTHQUAKE RESPONSE OF MULTI-STORY BUILDING SUPPORTED ON PILES : Part 1-Method of Analysis

SHIZUO YAMAMOTO, TAKASHI SEKI

Article type: Article
1970Volume 177 Pages 69-78,110
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_69

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A method of analysis for investigating the seismic effects on multi-story buildings which are supported on piles is presented. Several calculated results make clear the difference of earthquake response between buildings supported on piles and without piles. Further-more, anti-seismic design of piles is discussed. The fundamental idea for the dynamical interaction between pile and soil is similar to the mehod by Penzien et al. Multi-story buildings are regarded as a lumped-mass system of shear type which is allowed to sway and rock. This theory is compared with Tajimi's three-dimensional wave propagation theory, from the point of view of lateral resistance and radiational damping of pile by the surrounding soil.

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EVALUATION METHOD OF THE ECHO OSCILLOGRAMMES FOR ACOUSTIC MODEL EXPERIMENTS AND THEIR RELATION TO THE ROOM SHAPES OF AUDITORIUM

SYO KIMURA, KATSUAKI SEKIGUCHI

Article type: Article
1970Volume 177 Pages 79-88,110
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_79

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For development of acoustic model technique as a design tool of auditorium, evaluation method of the echo oscillogrammes on the subjective echo disturbance was investigated. The 1000 decay curves having single echoes, which have a time delay of 50 ms to 170 ms, with various sequence of diffusing reflections were made in a special model box (fig.6). The test sound used was 2 ms pulse of warbling tone of 10 kHz. From the results of hearing test, dependence of echo disturbance on the intensity of the diffissing sound as well as the delay times and the level differences of the echoes referred to the primary sound were looked for. Two parameters, R/D and h/w in fig.12, were adopted to establish a quantitative relation of the evaluation of echoes to the shape of echo diagrams. By using these two parameters, the critical lines at the threshold of absolute perceptibility of an echo as a function of the delay time were obtained in fig.13 and fig.14. These acoustic model techniques wave applied in 1 : 10 scale models of six multipurpose auditorium and the influences of the room shape on the echo oscillogrammes were examined. So we could find the effect of modification in the design of various parts of the room to improve decay curves varied with the fundamental shapes of auditorium.

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AN EXPERIMENTAL STUDY ON AIR FLOW AROUND THE BUILDINGS (I) : Wind Tunnel Tests on Turbulent Air Flow around the Buildings, Part I

TAKASHI SHODA, SHUZO MURAKAMI, RYOJI SHODA

Article type: Article
1970Volume 177 Pages 89-93,111
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_89

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This research report consists of four sections : report (I) which is presented here and report (II), (III), (IV) which will he presented in the next numbers. In report (I), (II), we describe about the measurement of the velocity of the wind near the building wall and the velocity in the corridor opened to the outdoor which is set on the exerior wall of the building. In this experiment, we use the single model of the apartment house and a few models arranged variously. 24 hot wire anemomenters are set on the wall of the model. Report (I), (II) aim at reaching some priciples for setting the balancedflue terminals and another principles for designing the corridor opened to the outdoor. In report (III), (IV), we describe about the analysis of the turbuleuce of the air flow around the bluff body on the building wall and the analysis of the surface pressure of the wall. In this experiment, we use the two dimensional fence model and block model on the flat plate and the various kinds of electronic instruments, for example, linealiser, correlator, A-D convertor, analogue and digital computers, etc. Report (III), (IV) aim to clarify the diffusion of the exhaust of the gas boiler around the bluff body on the building wall and to reach some principles for deciding the position of the balanced flue terminals which is set near the bluff body.

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EXPERIMENTAL STUDIES ON THE STRENGTH OF COMBINED JOINTS OF VARIOUS CASE (2)

Working Group of the Combined Joints

Article type: Article
1970Volume 177 Pages 95-106,111
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_95

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The statical characteristics of combined joints of next cases are investigated more minute by than former experiments which were performed last year. i) High strength bolt and fillet weld ii) Rivet and high strength bolt It becomes clear as the results of the research as follows : The ultimate strength of combined joint of first case is calculated as the 0.9 times value of the sum of slip load of high strength bolts and the ultimate strength of fillet weld. The ultimate strength of combined joint of second case is calculated simply by the sum of the ultimate strength of bolt kind of fasteners. According to those results and the behaviour of the joints, it is concluded that the design of combined joints of those types may be based on the allowable strength of each joining elements. The ultimate strength of combened joint of rivets and fillet weld is calclated by sum of the slip load of rivets and the ultimate strengt of fillet weld. But the slip load of rivets is very uncertain, because it depends upon the condition of rivetting procedure. So it is neccessary to investigate the combined joints of this type more miulltely before use of this type of joints.

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[title in Japanese]

Article type: Appendix
1970Volume 177 Pages 107-
Published: November 30, 1970
Released on J-STAGE: August 22, 2017

DOIhttps://doi.org/10.3130/aijsaxx.177.0_107

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