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157 巻
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原稿種別: 表紙
1969 年157 巻 p. Cover1-
発行日: 1969/03/30
公開日: 2017/08/22
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原稿種別: 表紙
1969 年157 巻 p. Cover2-
発行日: 1969/03/30
公開日: 2017/08/22
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原稿種別: 目次
1969 年157 巻 p. Toc1-
発行日: 1969/03/30
公開日: 2017/08/22
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原稿種別: 付録等
1969 年157 巻 p. App1-
発行日: 1969/03/30
公開日: 2017/08/22
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西 忠雄, 山本 康弘原稿種別: 本文
1969 年157 巻 p. 1-9
発行日: 1969/03/30
公開日: 2017/08/22
ジャーナル フリーThis Paper is intended to study the bond strength between the steel bars which is coated with zinc and aluminium and the concrete, some of which is admixed the Calcium Chloride. The results of persistency will be reported in the nearest future. As the results of these experiments, we found that there are no differences in the bond strength between coated bars and non-corted far, so far as one and four weeks aged specimens. But in case of thirteen weeks aging or more, coated bars are by far higher than non-coated bar. Namely, zinc coated bar, in case of thirteen weeks aged specimen, is 25% higher than non-coated and is 42% higher in four years aged specimen, further more, alminium coated bar, incase of thirteen weeks aged specimen, is 31% higher than non-coated and is 37% higher in four years aged specimen. When the Calcium Chloride has been admixed with concrete, the bond strength of zinc coated bar become higher with the passage of time, but there are no tendency to increase concerning to the aluminium coated bar. The slip of the coated bar at the bond breaking is smaller than that of non-coated bar in the shorter aging. Also, the difference between coated and non-coated bar is decreased with the passage of time. Therefore, the bond strength between the zinc and aluminium coated bars and the concrete as well as the non-coated bar.抄録全体を表示PDF形式でダウンロード (1200K) -
片山 恒雄原稿種別: 本文
1969 年157 巻 p. 11-18
発行日: 1969/03/30
公開日: 2017/08/22
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東 洋一, 大和田 義正原稿種別: 本文
1969 年157 巻 p. 19-26
発行日: 1969/03/30
公開日: 2017/08/22
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富沢 稔原稿種別: 本文
1969 年157 巻 p. 27-31
発行日: 1969/03/30
公開日: 2017/08/22
ジャーナル フリーThe auther markes a proposal for the new method to analyze approximately the stresses of the multistoried rigid jointed rectangular frame in consideration of axial deformation of columns. The stresses and deformations of the building frame are calcurated approximately by this method in less executing time than by the stiffness matrix method. This method is a combinative application of the principle of Mininum Total Potential Energy and D-value method which was developed by Dr. K. MUTOH. In this paper the auther describes the explanation of the method on the special case of Box type framework like the World Trade Centre Building. It could be however extended to general case in succeeding paper. From the results of many exercises, it is possible to say that the executing time for the multistoried building frame is almost 10% as compared with the stiffness matrix method, which is a correct answer, and the error of this method is about 3% to a correct one.抄録全体を表示PDF形式でダウンロード (609K) -
日置 興一郎, 坂 寿二原稿種別: 本文
1969 年157 巻 p. 33-39
発行日: 1969/03/30
公開日: 2017/08/22
ジャーナル フリーIn this paper, double layer lattice plates, which may be treated as systems of discrete elements, are analytically dealt with as equivalent continua. So, the lattice plates may be analyzed as anisotropic plates including transverse shear deformation, by considering the effects of web-members. The method to derive all the equivalent rigidities of the lattice plates has been described. The equivalent rigidity is the fundamental quantity to treat lattice plates formed trusses as continua. Differential equations of these plates can be expressed by using the equivalent rigidities. In the concrete form, the equivalent rigidities and equations of some types of double layer lattice plates have been determined. The results are as follows; 1. In case of the example I, the plate action in this lattice plate is separated from the disk action even if the effects of web-members are considered. The stretching rigidity D^<1212>, which does not arise by ignoring the effects of web-members, occurs by considering them. 2. In case of the example II, the web-members have no relation to every rigidity except shearing rigidities. 3. In cace of the example III, the coupling rigidities between stretching and shearing rigidities are caused by the effects of web-members. The web-members have influence on stretching rigidities.抄録全体を表示PDF形式でダウンロード (651K) -
田中 尚, 林 永全原稿種別: 本文
1969 年157 巻 p. 41-51
発行日: 1969/03/30
公開日: 2017/08/22
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島田 良一原稿種別: 本文
1969 年157 巻 p. 53-59
発行日: 1969/03/30
公開日: 2017/08/22
ジャーナル フリーSeasonal factor and irregular factor are both important in the short term fluctuations of the building starts by type of construction. SI-factors are got by removing the trend and business fluctuations from the original data. Stable seasonal factors are shown in Fig. 1 and Fig. 2. Wooden building has three peaks during the warm season, while R.C. STEEL and C.B. have their peaks in the latter half of the year. There is close similarity between R.C. and STEEL. The pattern of Wooden and C.B. shift gradually as shown in Fig. 3 and Fig. 4. The other two pattern changes very quickly. There is some similarity between Fig. 4-2 and Fig. 4-3. The Fig.5 shows the fluctuations of the irregular factor including extreme fluctuations. The extreme term in Dec. of 1959 is common to all except S.R.C, while the extreme term in Nov. of 1965 of S.R.C has no similar increase in the other types of construction. In the fluctuations of Fig. 5 except the extreme terms, we can find some correspondence between different types of construction. Because of this, these can not be concluded as simple random fluctuations. By Table 1, the most correlation coefficients between the irregular factors of the different type of construction are more than zero. The relation between R.C. and STEEL and between Wooden and C.B. are examples of significant correlation. As the Table 2 shows, the wooden building has the highest level of F value, because of the smallest residual square sum. In spite of the almost same scale of irregular factors as R.C or STEEL, Concrete block building shows the second highest F value because of the largest 'between month' square sum of the S.I factor. S.R.C. has the biggest 'total' square sum, the biggest 'Residual' square sum and the lowest F values.抄録全体を表示PDF形式でダウンロード (816K) -
岡田 光正, 吉田 勝行, 柏原 士郎原稿種別: 本文
1969 年157 巻 p. 61-66
発行日: 1969/03/30
公開日: 2017/08/22
ジャーナル フリーIn the previous paper, we reported the results of time studies about factories, elementary schools, and junior high schools, and senior high schools. By the same method, we obtained such results about office buildings, government office buildings and stations as follows; 1. On office buildings for the exclusive use of one company, modes of concentration curves are between 0 and 10min. before beginning time of the work, and ratio of concentration in 5min., is about 30%. 2. On office buildings for rent, ratio of concentration in 5min., is about 15%. 3. On office buildings for government or the exclusive use of a few companies modes of concentration curves are between 0 and 15min. before beginning time of the work, and ratio of concentration in 5min, is about 20%. 4. On passengers of train reserved seats, modes of concentration curves are between 5 and 20min. before the trains start, and ratio of concentration in 5min, is about 23%. 5. On passengers of accommodation trains, modes of concentration curves are between 15 and 25min. before the trains start, and ratio of concentration in 5min is about 18%.抄録全体を表示PDF形式でダウンロード (794K) -
吉武 泰水, 浦 良一, 伊藤 誠, 荻原 正三, 柳沢 忠, 松本 啓俊原稿種別: 本文
1969 年157 巻 p. 67-74
発行日: 1969/03/30
公開日: 2017/08/22
ジャーナル フリーMany satelite towns are being constructed. The maternity hospital is one of the important public facilities in these housing estates because of the high proportion of newly-married couples in the inhabitants. The object of this investigation is to get information for planning the maternity facilities in the newly developing housing estate. Number of maternity beds required to meet demand can be calculated by following formula; N=B・n・β/γ・κ N=Number of maternity beds required in the housing estate. B=Average number of birth for every family during an year. n=Total number of families living in the housing estate. β=Rate of utilization of maternity beds in their own housing estate. γ=Number of turnover of a maternity bed per year. κ=Occupancy rate of maternity beds. This report of our surveys presented suggestive data for each factors as follows : (1) B is 150〜200 an year for 1000 families during the early three or four year, but it decrease soon after to the normal level, that is 70〜80. (2) β will amount to 60% or more when the adequate facilities are provided.抄録全体を表示PDF形式でダウンロード (1093K) -
原稿種別: 付録等
1969 年157 巻 p. 75-77
発行日: 1969/03/30
公開日: 2017/08/22
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原稿種別: 付録等
1969 年157 巻 p. 78-
発行日: 1969/03/30
公開日: 2017/08/22
ジャーナル フリーPDF形式でダウンロード (17K)
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