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Article type: Cover
1979Volume 281 Pages
Cover1-
Published: July 30, 1979
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Article type: Cover
1979Volume 281 Pages
Cover2-
Published: July 30, 1979
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Article type: Appendix
1979Volume 281 Pages
App1-
Published: July 30, 1979
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Article type: Index
1979Volume 281 Pages
Toc1-
Published: July 30, 1979
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Article type: Appendix
1979Volume 281 Pages
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Published: July 30, 1979
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JUN SHIINO
Article type: Article
1979Volume 281 Pages
1-7
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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This paper describes statistic analysis of manpower of separate works for construction of prefabricated apartment houses of three to five stories, based on the daily reports of project. Major thirteen works, excluding plumbing, airconditioning and electric supply, of twenty-five projects were investigated, and the results obtained are as follows : (1) Linear relationship between manpower and the total floor area was observed. (2) A statistical linear model was established, and an accurate estimation formula was obtained for predicting manpower of separate works for foundation and erection of precast concrete pannels by employing the concrete volume of foundation, the number of precast concrete pannels and the total floor area as decision variables. (3) From this formula, a nomograph which enables predicting manpower required for foundation and erection of pannels from insufficient information obtained at the stage of expecting an order was drawn.
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HIROSHI NAGASHIMA
Article type: Article
1979Volume 281 Pages
9-20
Published: July 30, 1979
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YOUICHI MINAKAWA
Article type: Article
1979Volume 281 Pages
21-30
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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Considering the finite deformation theory, the nonlinear equations of motion which govern shells of revolution are derived. As there are some cases where the Donnell equation can not be applied, the finite element method is applied to shells of revolution. The obtained nonlinear equations of motion have many unkowns, and are not expressed by normal modes. If the modal analysis procedure is applied to the equations of motion, which is equivalent to the Galerkin method, they are transformed into the equtions of motion expressed by normal modes of which degrees of freedom are selected arbitrary. In the process we can make clear the mechanism of the coupling way in nonlinear spring terms caused by the coupling of different harmonic numbers in the circumferential directions. Considering the mechanism we can forcast whether there is a nonlinear term in a system or not. So we can show the form of nonlinear equations of motion for the system.
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HIROTO HAGURA, TOSHIO KOIZUMI, MANABU WAKATSUKI
Article type: Article
1979Volume 281 Pages
31-39
Published: July 30, 1979
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In part 1, we certified that it is useful to use aerial photos to investigate damage distribution of houses hit by a storm. In the former report, we induced regression equation, which can approximately estimate a damage ratio of the houses hit by a storm, by means of multiple regression analysis with combination of some topographical factors. Then we made clear the effects of every factor with residual analysis of which manner was to analyse the discrepancy of real damages and evaluated results. From the results, we found out that so long as to discuss the effects of topographical factors on damages of houses hit by a storm, there were some particular points which may be influenced by more local factors, such as hill, slope, foot of mountain. Those were too difficult to incorporate into the analysis numericaly. Thus, in this paper, we analysed the effects of every topographical factor by means of the combination of regression equation deviced from both quantification analysis and residual analysis. Where, quantification analysis is the method to be able to analyse the effects of every factor without estimate them numerically. By this way, we found out that it is necessary to take account of more limited factors than we chose in our former paper. In conclusion, we proposed a new manner to analyse the relationships between topographical factors and damages of houses hit by a storm.
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HIDEAKI KISHIDA, SHOICHI NAKAI
Article type: Article
1979Volume 281 Pages
41-55
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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MICHIKATSU HIRANO, HIDEO HOZUMI, YASUO KIKKAWA, HISAO TOMONAGA
Article type: Article
1979Volume 281 Pages
57-69
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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In Japan, Steel beams and concrete slabs with cellular steel decks are often combined as illustrated in Fig. 1 (a). A series of studies on composite beams of this type was undertaken by A.I.J. Steel Structure Committee. As part of the stubies, authors started to investigate the shear strength and behavior of stud connectors embedded in a composite beam with or without ecllular steel decks. Other than the above, the study had a purpose to examine the behavior of connectors embedded in a composite beam subjected to positive or alternating bending moment. As a result, new loading systems were invented as shown in Fig.5. Fifty-one push-out specimens were tested during this investipation. These specimens were named as illustrated in Table 1 and the details of some specimens are shown in Fig.3. Properties of slab concrete and connector steel are given in Table 4 and Table 5. Ultimate load per shear connector of each push-out specimen is as listed in Table 6. The following conclusions were drawn from the study : 1. The shear strength of stud connectors of P-N type specimens agreed with Fisher's Equation (2). 2. The shear strength of P-T type specimens can be expressed as Equation (4). 3. The ultimate load of P-DJ specimens was higher than that of P-N specimens, whether or not cellular steel decks are connected with a steel beam. 4. The shear strength of all specimen subjected to T-Loading was lower than that subjected to P-Loading. 5. There were no difference between the test results of DJS type specimens and those of DJC type specimens.
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MINORU MAKINO, CHIAKI MATSUI, ISAO MITANI
Article type: Article
1979Volume 281 Pages
71-80
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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In order to clarify post local buckling behavior and plastic rotation capacity of steel beam-columns, cantilever steel beam-columns of H shape cross section were tested under constant vertical load and alternating horizontal load. The test program was composed of two series; fifty nine specimens of Series I tested at large amplitude of plastic deflection, and thirty three specimens of Series II tested at small plastic amplitude. Main parameters involved in the tests were the width-to-thickness ratios of the flange b/f (2b, f : width and thickness of a flange, respetively), ones of the web D/w (D : depth of a cross section, w : thickness of a web), axial load ratios n (P/P_y, P : a constant vertical load of a specimen, P_y : axial yield load of a specimen), and material pro perties of the steel (mild steel and high strength steel). Values of the parameters b/f, D/w, n are as follows : b/f=6〜16 D/w=17〜65 n=0, 0.3, 0.6 In this paper, the test program and test results are reported. Some observation from the test results are as follows : 1) Not only width-to-thickness ratio of the flange but also one of the web and axial load ratio influence on the post local buckling behavior of the steel beam-columns. 2) Not only with axial load but also without axial load, the members subjected to alternating bending shrink due to unbalance of axial load carrying capacities of the buckled flanges.
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MASAHIDE TOMII, KENJI SAKINO
Article type: Article
1979Volume 281 Pages
81-92
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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YASUYUKI MIYAKAWA
Article type: Article
1979Volume 281 Pages
93-100
Published: July 30, 1979
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This paper reports on mathematical optimum design for the arrangement and heat distribution of radiant heating panels which hitherto had been handled only empirically. The Lagrange Method and SUMT were used as nonlinear optimization techniques. In case of Lagrange Method inequality constraints were eliminated by considering heat distribution patterns, and in case of SUMT equality constraints were eliminated by elimination of behavior variables using matrix method. Furthermore the approximation method of gradient vector was also proposed. It was turned out clear that the values of objective function which signified the sum of square of deviation of environmental index temperature to its designed values could be brought nearly to zero, if the heat distribution of devided zones of ceiling was freely controlled. However in case of the uniform heat distribution of radiant heating panels or grouping of panels, the values of objective function increased if the panels were not arranged in good condition. Furthermore it could be recognized that the optimum heating load were lessened as the area of radiant heating panels was larger.
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YUKIO KOMATSU, YASUHISA KATO
Article type: Article
1979Volume 281 Pages
101-107
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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The temperature and the relative humidity at the inner part of wall panels are very important factors in the rusting of LGS-frames of panels. This report is a part of the results of observations of them at the houses which are actually used. To determine the relative humidity and the temperature, an automatic digital recorder with electronic sensors was used. The results are as follows; 1) The degrees of temperature at the inner part of wall panels are about in the middle of those at the outdoors and at the rooms. And the values of relative humidity at the inner part of wall panels are less changeable than those at the other parts. 2) The mean values of relative humidity at the bath room wall panels (north side) are 10% to 20% higher than those at the living room wall panels (south side). But there are a few houses to which this result is not applied. 3) By the observation of calculated absolute humidity, it was found that the absolute humidity of the inner part of wall panels changes according to the temperature increment and decrement. This phenomenon is thought to be caused by the absorption and radiation of moisture by the materials e.g. plywood and glass wool mat. 4) Comparing the calculated dew-points with the the temperature at the outsides of wall panels, the probability of dew at the inner part of panels are found in all houses.
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MOTOYASU KAMATA
Article type: Article
1979Volume 281 Pages
109-119
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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Continued from the preceding paper (1), in this paper (2), I report the results of wind tunnel experiments on the effects of model shape, vent height and so forth on gas diffusion near buildings. Results) C_1′and C_b′become uniform as H/Z_o and W/H become greter (Fig.2-2〜5). 2) The effects of change of h_e/H and u_e/U_H on C_m′and C_w′near a model become small as cavity becomes greater (Fig.2-2〜5, 2-14). 3) When the location of vent is on model's leeward surface, especially when Z_e/H is small, C_1′and C_w′near a model are high and don't become low even if h_e/H increases a little (Fig.2-11, 14, 16). 4) When C_u′in the windward side of vent is higher than C_u′in the leeward side of vent, C′_1 doesn't become low even if h_e/H and u_e/U_H become greater (Fig.2-7, 8). 5) When the location of vent is on model's upper surface, judging from all experimental results, C_1′doesn't exceed 1.17 greately in any case. 6) C_w′in the distance from a model is virtually determined by model shape and H/Z_o (Fig.2-14〜16). 7) When the location of vent is on model's upper surface and D/H is not small, C_1′/C^- and C_w′/C^- near a model are virtually determined by model shape and H/Z_o (Fig.2-13, 17). 8) As Fig.2-22 shows, C_b′isopleth changes complicatedly as X_L/H changes.
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KOICHIRO OKAMURA, HIDEAKI HASE
Article type: Article
1979Volume 281 Pages
121-128
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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HIROKUNI TANIGUCHI, NAOJI MATSUMOTO
Article type: Article
1979Volume 281 Pages
129-137
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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In this study eight typical semantic scales were selected from the semantic dimensions (considered to be useful for meaning in the first section) as an index of measurement. The model was evaluated then, using semantic scales. These results were analysed by multidimensional scaling and large variations in evaluation were observed at the point where D/H=2 in front of building and D/H=1 in the side of building. Further, the physical elements which were strongry connected to visual effects values were selected by factor analysis and the visual effects values estimated. After estimating visual effects values using physical factors by multiple regression, the multiple correlations coefficients were 0.95, 0.92, 0.73 and 0.86 in cases of Closedness, Potency, Unity and Pleasantness respectively. Using the predicting equations, the visual effects values could be calculated in relation to various points of view around buildings and these could be considered in a contour form. This contour form can be considered as an useful asset in the flow planning and positioning of buildings. Further, regression equations were freezed by stepwise regression and two monograms were constructed using Closedness and Pleasantness as indices and this also could be considered as an available planning tool.
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Rokuro TOMINAGA, Yoshiaki HONDA
Article type: Article
1979Volume 281 Pages
139-144
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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This paper attempts to clarify factor of occurrence of redevelopement by using multivariate analysis. Firstly, the actual condition of redevelopement in Osaka region is discribed for preparation of analysis. Secondly, to clarify the relationship between occurrence of redevelopement and urban structure, discriminant analysis is carried out. In addition, effect of redevelopement is discussed.
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MAMORU TOHIGUCHI
Article type: Article
1979Volume 281 Pages
145-151
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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In this paper, the market structure and the price policy of prefabricated houses are analyzed as the basic data of users' ecconomical evalution. The summary results are as follow. 1. The prefab-house industry supplies low price houses, but the supply is small in quantity. 2. The industry consists of a few big enterprises and many small ones. And the big five enterprises supply almost 70% of prefab-houses. Now, the tendency of concentration continues. 3. In the prefab-house market, a non-price competition is dominant. Design, material, module, construction systems, etc. differentiate in many ways. 4. The prefab-house industry's competition with the traditional house industry is also non-price competition. And the means of competition are the characteristics such as the big capital, the strong publicity, the intermediation of loan, the intermediation of building land, the short time necessary for completion etc. 5. The pricing of a prefab-house is mainly based on elastic cost plus principle. Market price approach and full-cost principle are adopted by a small number of enterprises.
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KENICHIRO HIDAKA
Article type: Article
1979Volume 281 Pages
153-161
Published: July 30, 1979
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HIROYUKI SUZUKI
Article type: Article
1979Volume 281 Pages
163-171
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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It has been pointed out that W.E. Nesfield was a great figure in forming the Queen Anne Revival in the nineteenth century. But he was often regarded as a worse half of Nesfield-Shaw combination. So, as a first step, he must be discussed separately from Shaw. His major works were all country houses. Here was examined below four works. Coombe Abbey, 1861 Cloverley Hall, 1864 Kew Garden's Lodge, 1867 Kimmel Park, 1868 Characteristics of his composition in planning and manner of expression were summarized as follows; 1. Characteristic symmetry in exterior composition. 2. Influence of French style. 3. Influence of Japanese decorative motives. His work was quite unite unique and original, but his career as an architect was rather traditional in comparison with that of R.N. Shaw. Nesfield's originality in form and Shaw's modernity in career were both indespensable to make the "Queen Anne" powerful.
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TERUNOBU FUJIMORI
Article type: Article
1979Volume 281 Pages
173-180
Published: July 30, 1979
Released on J-STAGE: August 22, 2017
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In 1886 Japanese government employld german architlct Ende & Bockmann, who formed a plan to concentrate government office buildings. This plan was very important urbanism in Meiji Era. The aim of this paper is to make clear process of this project-that is famous but notclear. contents 8 on the architects and technicians.
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