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Article type: Cover
1980Volume 294 Pages
Cover1-
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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Article type: Cover
1980Volume 294 Pages
Cover2-
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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Article type: Index
1980Volume 294 Pages
Toc1-
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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Article type: Appendix
1980Volume 294 Pages
App1-
Published: August 30, 1980
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ISAMU MATSUI, YOSHIO KASAI
Article type: Article
1980Volume 294 Pages
1-12
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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This paper describes the method of determining the surface sensation of warmth and cool caused by touching the building materials. A test apparatus was developed in order to obtain the physical quantity which correspond to the psychological quantity of sensation. The rate of change in temperature (θ_V) of copper cylinder (16mm in diameter, 25mm in high) that is the physical quantity was measured by this apparatus with many kinds of material. The sensation of warmth and cool that is changed by temperature condition in the room, kinds of material, thickness of material and crvering in paint or cloth can approximately represent by θ_V as follows. The sensation is discriminated warmth and cool at θ_V=-0.025℃/s. In the sensation of warmth, it feels a little warm at θ_V=0℃/s, pretty warm at θ_V=0.075℃/s and the sensation of warmth is saturated at more than θ_V=0.1℃/s. In the sensation of cool, it feels a little cool at θ_V=-0.054℃/s, pretty cool at θ_V=-0.135℃/s and the sensation of cool is saturated at more less θ_V=-0.2℃/s.
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MICHIO KOIKE, KYOJI TANAKA
Article type: Article
1980Volume 294 Pages
13-24
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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This paper deals with a quantitative estimation of light and heat effect on rubber and plastic films in the weather, adopting elongation at break as an index of degradation. An outdoor exposure test was carried out in Tokyo for two years under four exposure situations as follows; on the heat insulation, on the wire netting, under glass and in the shade. Temperatures of clear films and opaque black sheets in the four situations were continuously recorded and UV radiation accumulated every ten minutes was also recorded in order to distinguish the effect of principal weather elements. Comparing decreases of elongation of exposed samples with values calculated by the equations obtained in the previous paper (No.289) and data recorded in the exposure test, we can recognize that the equations expressing light and heat effect are valid to express the effect of weather. The equations are also useful to discuss equivalent conditions of accelerated exposure tests, and the conditions obtained are proposed.
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JUN SAKAMOTO, YOSHIRO KOHAMA, TAIJI TANABASHI
Article type: Article
1980Volume 294 Pages
25-33
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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An analytical method for accumulative plastic deformation under random loadings is described. The analysis is based on a hypothesis of accumulation law and stochastic equations for randomly accumulated plastic deformations. As analytical models, cumulative behaviors of plastic strains for Steel and Steel Reinforced Concrete members under random curvature amplitudes with constant axial force are treated. Analytical expressions and some numerical results are presented with Monte-Carlo simulations. Detailed behaviors on the analytical results are discussed in the following paper [II].
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KIYOSHI BAN, KATSUHIKO IMAI
Article type: Article
1980Volume 294 Pages
35-43
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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This paper deal with the experimental and theoretical study of the rigid frames with triangular stiffeners located in the plane of the beam franges. The purposes of the paper are to certify the applicability of the author's formulas (see ref. 18), 19), 20)) to the connections under lateral force and to survey the effects that the deformation of the beam flange connections and panel zone have on the elasto-plastic behavior of the structures. Theoretical analysis of the structures took into consideration the deformation of the beam, column, beam flange connection and panel zone as well as the P-Δ effect of the column. The conclusions from the study are as follows; I) the analytical results simulated very well the elasto-plastic behavior of specimens. II) the author's formulas to determine the strength and the deformation of the beam flange connection in the elasto-plastic range are applicable for structures under lateral force. III) the rigidity of the panel zone in the plastic range is about 4% of the one in the elastic range. IV) the deflection of the actual structure is considerably greater than the structure with ideally rigid connections. V) the deflection caused by the deformation of the beam flange connection is nearly equal to the deflection caused by the panel zone in practice. VI) P-Δ effect affects the deflection after yielding of the structure and also the ultimate strength.
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BEN KATO, ISAO NISHIYAMA
Article type: Article
1980Volume 294 Pages
45-52
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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The maximum strength and deformation capacity of cold-formed rectangular hollow section members subject to local buckling under axial compression were investigated experimentally. The influence of residual stresses due to cold-working on the strength and deformability was made clear through the comparison of these characteristic values of cold-formed tubes and those of the corresponding stress-relieved tubes. Finally, the empirical formulas which predict the local buckling strength and the deformation capacity of cold-formed rectangular hollow section members under axial compression were derived through the statistical approach.
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YASUNAGA FUKUCHI, YASUO DOI, YUKIO IZAKI
Article type: Article
1980Volume 294 Pages
53-60
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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The purpose of this paper is to consider about cyclic hysteretic behaviors of structural steel in unstationary and stationary state subjected to cyclic tension-compression test under a constant strain amplitude after plastic pre-strain and to make a proposition for hysteretic stress-strain relations under random strain amplitudes using the relationship between secant moduli and strain ranges of the stationary hysteretic loops. The test specimens are manifactured by machineworks from reinforcing bars (SR 24, 16mm diameter) and steel plates (SS 41, SM 50, 16mm thickness), Load is applied by a universal testing machine through the gripping devices for tension and compression tests. In regard to the cyclic tests under constant strain amplitudes and the proposed method for prediction of behaviors of steel under random strain amplitudes, the results are summarized as follows; (1) Hysteretic loops under a constant strain amplitude become stationary after several cyclic numbers, In the case of large amplitude, the stationary loops can be moved in parallel along the strain axis according to the pre-strain and in the case of small amplitude (R<4ε_Y), they cannot be moved by the above-mentioned method, but when the upper revarsal point is in the strain-hardening range, they can be moved by the same method. (2) The experimental curves of cyclic stress-strain relations under random strain amplitudes can be followed by the proposed method with good accuracy.
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YOSHIZO DOBASHI, TAKESHI UCHIYAMA, AKIRA SUGINOME
Article type: Article
1980Volume 294 Pages
61-73
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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Elasto-Plastic analysis of plates has been underlain by those theries mostly for the bending, with membrane effects considered, or the large diflection which are hardly accountable for other prime considerations of the shear effects. This report presents a method to take account of them by extending Reissner's approach, which can reasonably include the effects notably of transverse shears in terms of force and deformation, so that the inelastic range can be covered also in that direction owing to laminated types of finite elements. The subject matter is quantitatively discussed in a series of examples of plates differing in their relative thickness.
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Kiyoshi MUTO, Takashi KURODA
Article type: Article
1980Volume 294 Pages
75-85
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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KAZUO MATSUMURA, MINORU MAKINO
Article type: Article
1980Volume 294 Pages
87-96
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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In order to increase the safety of structures under earthquakes, it is indispensable to add the reliability of estimate of the strong ground motion. Under the assumptions of the Poisson distribution of earthquake occurrence, the Gutenberg-Richter's magnitude law and the attenuation relation, a large number of extreme values of yearly maximum earthquake ground motion are simulated by the Monte Carlo Method. The findings indicate that (1) the plotting position for the extreme values of earthquake ground motions agrees well with that of exponential distributions and (2) the distribution of the largest values is approximated as logarithmic normal distribution. Assuming that the distribution of the largest values is the logarithmic normal distribution, the control curves related to the mean and variance of the largest values can be established by an analytical procedure. As the analytical control curves of ground motions at Fukuoka and Tokyo agree well with the observed distributions for the period of 90 years, it is concluded that the combination of analytical control curves and observed extreme value distributions are convenient for an estimator of the probabilistic design load for the earthquake resisting design.
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HIROTO HAGURA, TOSHIO KOIZUMI
Article type: Article
1980Volume 294 Pages
97-109
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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We deduced regression equation, which can approximatey estimate a damage ratio of the houses hit by the Okinoerabu Typhoon, by means of quantification analysis with combination of some topographical factors. Then we made clear the effects of every factor. From the results, we made some following conclusions. (1) The kind and size of topographical factors, which have effects upon damage of houses hit by a storm, vary according to the undulation of the island. In an island, which undulates considerably, slope state has close connection with a damage ratio. But in the island, which does not undulate a great deal, effects of the sea have a close connection with a damage ratio. (2) We presented a new method which defines the scale of a topographical factor. The method analyzes the topographical wave length by cluster analysis. The scale is the range in which topographical wave changes occor. (3) Analysis of the topography is to analyze topographical wave length. (4) The results of interpreting aerial photographs of houses hit by a storm were accurate in showing complete destruction or half destruction of house.
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NOBUSUKE SAKATA, TAKUMASA YOSHIDA, HISAO TOKUYAMA, CHIAKI HARUTA, TORU ...
Article type: Article
1980Volume 294 Pages
111-121
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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MASAHIRO CHATANI, RYUZO OHNO, HIROAKI KOBAYASHI
Article type: Article
1980Volume 294 Pages
123-130
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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KAZUHISA IKI, YOSHIRO IKEHARA, TAKASHI NAKAJIMA, RYOZO NAKAMURA, HITOS ...
Article type: Article
1980Volume 294 Pages
131-138
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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The purpose of the study is to develop a model that enabel to simulate environmental change in a residential quarter of a city. The model constracted with the concepts of automata theory, provides a means to represent qualitative evolutions of urban area caused by certain environmental impacts, practically urban pollution factors. The contents of this paper is as follows : 1. Purpose and scope of study 2. Modeling concepts 3. Simulation and results 4. Discussion on Modelling technique 5. Future development
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KENICHIRO HIDAKA
Article type: Article
1980Volume 294 Pages
139-151
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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TANEO OKI, TAKASHI KONDOU, NORIMASA WADA
Article type: Article
1980Volume 294 Pages
153-158
Published: August 30, 1980
Released on J-STAGE: August 22, 2017
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1-1 To make the controller of skace clear There are four standpoints of the controllir of skace; an arderes, an owner, a manager and a user. And they have complicated relations actually. It seems right that the controller of space should be a user, but various problems have occurred, as the orderes is misunderstuood to be the controller of skace. 1-2 To isolate the territory The physical isolation of space has been needed in order to secure functons, but the isolation of space by means of a promise is sometimes needed. And the spaces that are articulated by means of physical isolation are connected by the spaces that ore not articulated. These spaces that are not articulated are characterizcd by promises. If they are compressed, the multiformity of human behavions will be damaged. 1-3 To make a space composition fit for the function To satisfy the function, a planmer compores spaces logically considering the objective data and concept that is given previonly. At that time he excludes the factors that cannot be grasped objectivity. 1-4 The isolatin of life space Life space is isolated by hard promise, aoft promise and physical setting. Physical setting has threc types; the spacial isolation, the isolation by distance (proxemics) and the symbolic isolation. The isolation by distance and the symbolic isolation is supported by soft promise. Unit-space that is ayticulated by only the spacial isolation is apt to eliminate most of free human behaviors.
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