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Article type: Cover
1978 Volume 269 Pages
Cover1-
Published: July 30, 1978
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Article type: Cover
1978 Volume 269 Pages
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Published: July 30, 1978
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Article type: Appendix
1978 Volume 269 Pages
App1-
Published: July 30, 1978
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Article type: Index
1978 Volume 269 Pages
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Published: July 30, 1978
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Article type: Appendix
1978 Volume 269 Pages
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Published: July 30, 1978
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SADAHIRO INOUE
Article type: Article
1978 Volume 269 Pages
1-10
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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KOICHI KISHITANI, TAKAYUKI HIRAI
Article type: Article
1978 Volume 269 Pages
11-18
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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It is reasonably possible to reinforce Gypsum paste or Gypsum concrete matrices by metallic skeletons as in the case of steel reinforced cement concrete. While, for metallic skeleton not only steel bar but aluminium bar is avilable. In neutral matrices as Gypsum paste or Gypsum concrete aluminium does not need corrosion protective covering so to examine the structural performance of aluminium skeleton reinforced Gypsum paste or Gypsum concrete is an interesting theme. Then we carried out some experiments on beams bearing simple bending load to investigate the mechanical properties of these metallic skeletons reinforced inorganic matrices structures. There are some series in the experiment. In the small size beam series the fracture by bond destruction between matrix and reinforcing tensile bar are examined. Series I, II and III are on the natural size beams. For series I deformed steel bar skeletons and Gypsum paste or Gypsum light weight aggregate concrete matrices, for series II round aluminium bar skeletons and cement concrete, Gypsum paste and Gypsum light weight aggregate concrete matrices, and for series III deformed aluminium bar skeletons and cement concrete, Gypsum paste and Gypsum light weight aggregate concrete matrices are used. In the study the bending performance of the metallic skeleton reinforced inorganic matrix structure are estimated and the basis idea needed to design the members having these structure are indicated. In this paper experimental results are shown and theoretical analysis will be reported in the next paper (Part 11).
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ISAMU TANAHASHI
Article type: Article
1978 Volume 269 Pages
19-30
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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The rheological properties in dispersed system (i.e. slipping shear stress, Viscosity and shear yeild stress) were examined by two kinds of rotation viscometer. These properties depend on the volumetric concentration and the specific surface area of dispersed solid. The result of the theoretical examination about the size shapely effect of dispersoid having influence upon viscosity are as follows. 1. When the revolution is 62.5rpm, the rotation viscometer shows the most stabilized value. 2. Shapely effect of dispersoid can be obtaind by the ratio of measured value to theoretical value in specific surface area. 3. Fresh cement mortar has a yield stress and it is non-Bingham body which is shown as a non-linear relation between stress and strain rate. 4. The viscosity η_m is ten times as large as the shear yeild stress τ_y. 5. The viscosity in dispersed system of cement can be shown as a function of volumetric concentration and specific surface area of dispersoid. the relation equation is as follows. p_η_<re>=η_<cp>/ηW=(4.7×10^<-5>・B_c+1)^<φc> _mη_<re>=η_m/η_<cp>=(1.015×10^<-5>・log B_<st>+1.053)^<φs> Where. _pη_<re>=η_<cp>/ηW : Relative Viscosity of Cement Paste _mη_<re>=η_m/η_<cp> : Relative Viscosity of Mortar η_W (poise) : Viscosity of water (or dyne・sec/cm^2) η_<cp> (poise) : Viscosity of cement paste (or dyne・sec/cm^2) η_m (poise) : Viscosity of mortar (or dyne・sec/cm^2) B_c (cm^2/gr) : specific surface area of cement (measured value) B_<st> (cm^2/gr) : specific surface area of fine aggregate (caluculated value) φ_c (%) : Volumetric concentration of cement contained in cement paste φ_s (%) : Volumetric concentration of fine aggregate contained in mortar
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HIROSHI NAGASHIMA
Article type: Article
1978 Volume 269 Pages
31-38
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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SAKICHI OHGISHI, MITSUO WADA
Article type: Article
1978 Volume 269 Pages
39-48
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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Shuhzoh SUZUKI, Hideo SUGIYAMA, Yoshitugu TAKEMURA
Article type: Article
1978 Volume 269 Pages
49-59
Published: July 30, 1978
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In this paper, the influence of racking test methods and wall length on the shearing properties of wooden bearing wall sheathed with 4mm-thickuplywood or 12mm-thick insulation fiberboard are represented on the basis of the test results.
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KIYOSHI KOMORI
Article type: Article
1978 Volume 269 Pages
61-71
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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In this paper, the method to calculate strength and deflection of a reinforced concrete one-way slab with a varying compressive membrane force due to lateral restraint was developed, and sixteen reinforced concrete one-way slab (wide flat beams) have been tested to confirm the accuracy of solution obtained from the equation, and the effect of span depth ratio and the rigidity of lateral restraint was discussed. The results obtained may be summarised as follows. 1) The compressive membrane force caused in one-way slab with lateral restraint was measured. 2) It became evident that the membrane force changed as deflection increase. 3) Load-deflection diagrams of one-way slabs with the compressive membrane force showed a very similar characteristic of columns, concavo-convex shape. 4) The arching effect due to the compressive membrane force became larger as span depth ratio decreased. 5) Ultimate load and deflection could be calculated in considerable accuracy using the equations proposed by author.
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MINORU YAMADA, HIROSHI KAWAMURA
Article type: Article
1978 Volume 269 Pages
73-83
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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In this paper (IV), the resonance fatigue characteristics of structural elements idealized as NM and NQ Models in the previous paper (III) are inspected qualitatively and quantitatively based upon experimental results. Reinforced concrete columns with flexural yielding type and reinforced concrete shear walls with shear fracture type are employed as test specimens for NM and NQ Models, respectively. In accordance with the analytical predictions in the previous paper (III), it is shown that constant deflection and incremental deflection amplitude conditions result in the resonance response condition of reinforced concrete columns with flexural yielding type and that of reinforced concrete shear walls with shear frac- ture type, respectively.
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Kazuo Ohno, Mamoru Obata
Article type: Article
1978 Volume 269 Pages
85-92
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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TAKESHI OHKUMA, AKIO KANAYA
Article type: Article
1978 Volume 269 Pages
93-101
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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In previous papers, Part I, II, response characteristics of three types of rectangular block in six different flows-three kinds of uniform flow or flow without velocity gradient and three kinds of shear flow or flow with velocity gradient-were comparatively investigated. From those works, the effect of the vortex-shedding on the response were guessed to be large in any-combination of the block and the flow. Then pressure fluctuations on side face of the block with square section are examined here. Employed flows are above-stated six flows. In any case flow direction is parallel to the side face. Main results are as follows. i) The r. m. s. pressure coefficients are 0.1〜0.25 in uniform flows and 0.3〜0.4 in shear flows having downward slow increase. ii) The pressure spectra, more correctly nS(n)/σ^2, in uniform flows have marked peaks at nD/U≈0.1 which weaken with increase in the turbulence intensity of flow. In shear flows, however, predominant peak is not shown, that is, the spectra are wide banded centered on nD/U_H≈0.1. iii) The pressure fluctuations are convective downstream having monotical decrease with frequency in the coherences. The convection velocity U_c is about 0.58 U in uniform flows and about 0.34 U_H in shear flows. iv) For the vertical correlation, the phase differences are nealy zero except the case of the strong shear flow and the root-coherence s decrease with frequency as exp[-Knη/(U or U_H)] in any case. v) For the correlation between side faces, real parts of the correlation spectra are strongly negative around nD/U≈0.1 in uniform flows and nealy zero in others.
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NAOTUNE TAGA, TADASHI MIYAZAKI
Article type: Article
1978 Volume 269 Pages
103-114
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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By the construction of high rise buildings, long span bridges and large scale oil tanks, the fundamental period interested in earthquake engineering is being long. So, the comparatively long period of soil layers as well as structures is a matter of utmost concerns. Here in this paper, the microseisms are observed along the two geological lines near the center of the Nohbi Plain, by use of the long period seismometer with 10 seconds. The wave forms of observed seisms are digitalized by A/D converter and analysed by the Fourier's Transform technique. The vibrational properties in the Plain is the Range of 0.2 to 0.3 Hz in the low frequency, 0.5 to 0.6 Hz in the middle and 1.5 to 3.0 Hz in the high frequency. The numerical results and spectral forms are discussed and compared with the geological profile of the Plain, the sea wave properties of the Ise Bay, the Bouguer's anomaly and the wave propagation properties.
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YOUICHI MINAKAWA
Article type: Article
1978 Volume 269 Pages
115-125
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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Hiroyasu Okuyama, Kenichi Kimura
Article type: Article
1978 Volume 269 Pages
127-137
Published: July 30, 1978
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JUN UENO
Article type: Article
1978 Volume 269 Pages
139-144
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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In the proceeding report (Part 1.) the author derived the method which can accurately estimate the population change by every year interval and by every year age group. And in this report the author attempted to indicate an effective planning technique which can control the population changes in the housing estates through the practical simulation by this method. In order to examine the population changes, the yearly change of the number of pupils was taken for example, that is to say, the measure how to reduce the number of pupils in the housing estates was investigated. Summary of results are as follows; 1) The family-types composition of newcomers includes more younger family-types, the number of pupils at the peak point in its yearly change comes to more numerous. 2) The remaining ratio in the housing estate is higher, the number of pupils at the peak point comes to more numerous.
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HIROSHI KATANO
Article type: Article
1978 Volume 269 Pages
145-154
Published: July 30, 1978
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NOBUAKI MORIMOTO
Article type: Article
1978 Volume 269 Pages
155-163
Published: July 30, 1978
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In this paper, a hypothesis about a market price of rent is presented. That may be summerized as follows; 1) House rents are widely distributed. 2) Maximum rent is decided by solvency of a tenant. 3) Minimum rent is decided by the lowest cost on management of tenement-house, such as, repair expenses, insurance against fire, the municipal property tax or so. In this case, it is important that ground rent, depreciation reserve and repair expense for future are not concluded. After that, it is proved that the hypothesis is correct by using results of some researches.
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TORU HATSUDA
Article type: Article
1978 Volume 269 Pages
165-174
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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The purpose of this study is to clarify the architectural characters of the fish warehouse at Honfuna-Cho of Nihonbashi, Tokyo, and to know the Japanese response to the European architectures in the eary Meiji Era. A summary will be given as follows; 1. The fish warehouse at Honfuna-Cho was built early in the Meiji Era (1875) by a group of eight landowners. 2. Early in the Meiji Era the European style house was called "Seiyo-Zukuri", and "Seiyo-Zukuri" was built for a social status symbol of enterprisers. 3. The fishwarehouse at Honfuna-Cho had European truss, but the warehouse was not called "Seiyo-Zukuri. Because the warehouse was typical of Japanese style. 4. The reason why the warehouse was not built in "Seiyo-Zukuri" was found in the fact that the warehouse was built only for practical use.
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AKIRA SATO
Article type: Article
1978 Volume 269 Pages
175-184
Published: July 30, 1978
Released on J-STAGE: August 22, 2017
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Following the former part, here at first, we observe Burnham's attitudes towards architectural styles. He was not a rigoristic Classicist as compared with, for instance, McKim. According to circumstances, he was sympathetic to the Gothic. Besides, he had interest in the new architectural tendencies till his latest days, too. He maintained private contacts not only with Sullivan and Wright but also with younger generation architects as George Maher. He could and did produce "Chicago School" architecture even in his last years. But request was rare simply. If there were any one notion applicable to Burnham's later works, it would be ambiguous, loose one, "Beautiful". Then, we investigate the situation of his office. His office produced great volume of works in about forty years. This was made possible by the haste of design work on the one hand, and the delegation system on the other hand. It goes without saying that the office itself was a large organization with about 180 staffs. In that, Burnham showed his innate administraive ability. He left off the old-fashioned notion of architect. In conclusion, it would be possible to say that, though he knew "rational" architecture, Burnham, produced old-aged and seemingly irrational style. But it was done from his clever eye. He accomplished his rationality in another field, namely architectectural design production, like those one geneaology of architects as James Wyatt, G. G. Scott and Albert Kahn.
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