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96 巻
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原稿種別: 表紙
1964 年 96 巻 p. Cover1-
発行日: 1964/03/30
公開日: 2017/08/30
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原稿種別: 表紙
1964 年 96 巻 p. Cover2-
発行日: 1964/03/30
公開日: 2017/08/30
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原稿種別: 目次
1964 年 96 巻 p. Toc1-
発行日: 1964/03/30
公開日: 2017/08/30
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平野 道勝原稿種別: 本文
1964 年 96 巻 p. 1-6
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーIn the previous work, author suggested and examined experimentally a hypothesis on an approximate moment-rotation relationship for "plastic hinges" in rigidly-jointed trussed beams when the cord member of the panel were buckled. [numerical formula] equation (5) where A: relative rotation of a hinge panel E: Young's modulus M: bending moment _cM_0: full plastic moment of a cord member when no axial load acts _cN_0: full plastic axilal strength of a cord member when no bending h: depth of a truss s: length of a cord member of a panel σ_y: yield stress A: cross-sectional area of a member In this paper, the behaviour of trussed continuous beams when loaded into plastic range is investigated theoretically and experimentally. Two series, eight specimens cut from a mild steel plate were tested under steadly increasing load (deflection). Their behaviours were predicted using the previous hypothesis and the slope-deflection method (equation (1)〜(5)). Calculated and observed load-deflection relations and load-strain relations are shown in fig. 6〜10. Well agreement between predicted and observed loading capacity is demonstraed, except maximum loads, and the difference of safety between trussed and prismatic continuous beams is also shown.抄録全体を表示PDF形式でダウンロード (946K) -
鈴木 敏郎原稿種別: 本文
1964 年 96 巻 p. 7-12
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーThis repart gives theoretical and experimental analysis for the lateral stability of trusses. The general formula for buckling load of the truss is presented. It is gained by an approximate analysis, using the energy method, for the elastic stability out of the plane of the truss. The truss is an elastic plane truss with parallel chords and it, in the present treatment, is considered as a whole. The result applies to any arrangement of vertical and diagonal web members. As the experimental investigation, tests on full size trusses are carried out. The trusses are composed of circular steel tubes and warren type webs are joined rigidly to the main chards of trusses. The most of the test results are found in general to be in good agreement with the theoretical works. In addition, it is found that the lateral buckling load of these trusses is very high, because of the high tarsional rigidity of circular tube. Special mention must be made of these results.抄録全体を表示PDF形式でダウンロード (866K) -
北村 弘原稿種別: 本文
1964 年 96 巻 p. 13-20
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーIn the previous report, an analysis has been made to the gridworks by the application of difference equation. This time it is intented to analyze the statically indeterminate space trussed flat plate by difference method. In discussing the solution of plate, it is of adventage to find out the equations of deformation in the form of series from the equations of equilibrium and the method of elastic weights regarding plane warren-type trusses. By transforming the corresponding equations, we may obtain difference equations which show the relations between the deformations and loads. Then, in discussing the problem in contrast with gridworks which have been referred to in the previous report, the relations between deformation and load of grid truss are derived in difference forms. Now before we go into any further, let us explain the character of the space trussed flat plate, the upper and the lower chords of which meet at right angles one another at regular intervals in plane projection and by tying up the points of these intersections diagonally with lattice members, it would form space trussed flat plate mentioned. For the solution of the problem, we first choose the stress of each chord on these space trusses of isotropy as unknown quantities, and eliminate the stress of lattice members which are derived from the conditions of equibrium at each point, and obtain force equilibrium in form of difference equations, by which the relations between the stress of chords chosen and arbitrary loads at each points are shown. These equations can be also obtained by modifying coefficients referred to in the previous report of the statically determinate space truss shell in such manner as may be applicable to plate.抄録全体を表示PDF形式でダウンロード (730K) -
田中 尚, 高梨 晃一原稿種別: 本文
1964 年 96 巻 p. 21-27
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーThe method of structual design, so as to "Plastic Design", "Collapse Design", etc., is based on the ultimate strength of the structure. The calculation of ultimate strength requires the formation of plastic hinges with perfect rotation capacity after large plastic deformation. In this report, the stability criterion, as the limitation of width-thickness ratio, of flanges or webs of I-shape section, is discussed. First, the stability criterion of thin plate, which is already acted the yield stresses under various boundary conditions, is established, using the criterion of dynamic stability. Then, this criterion is rewrited by the Prandtl-Reuss' stress-strain relationship concerning elastic, perfectly plastic material. For example, the limitation numbers of the width-thickness ratio of the plate in the plastic region under four types of loading and boundary conditions, are calculated. Compared with the reported results of the experimental analyses, the results of calculations are rather high. One of the reasons of this difference is said to be the unavoidable imperfections of actual plates.抄録全体を表示PDF形式でダウンロード (654K) -
山原 浩原稿種別: 本文
1964 年 96 巻 p. 28-35
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーPipe piles are generally driven with their ends open and insides of them are consequently filled with soil. Up to this time, it has been regarded as a important problem whether the soil, filled inside of pile, gives enough plugging effect or not. The soil, filled inside of pile, does not always form a complete plug against the subgrad reaction at the top of pile. The plugging effect is mainly arised by the resistance acted against the movement of soil along the inner surface of pile. In the case of granular soil, the resistance is regarded as a frictional force between pile surface and soil, but when the soil is cohesive, the resistance is looked upon as the interaction shear force acted along the slide plane close to the pile wall. Then the bearing capacity standing by the inner soil can theoretically be calculated from the solutions of differential equations which are the function of gravity, cohesion, angle of internal friction and coefficient of lateral pressure of soil, coefficient of friction between pile and soil, diameter of pile and depth of soil filled within the pile. By the theoretical works described on this paper, a general mechanism of plugging effect was made clear and these theoretical estimates are shown in good agreement with the observed practical data. As the result of several discussions, please take notice especially of the fact that the diameter of pile have an remarkable effect on the formation of plug. The larger the pile diameter is, the deeper penetration is required to obtain the beneficial plugging effect. The experiential fact that granular soil is much effective to the formation of plug than cohesive soil is also quantitatively estimated by this solution. It is hoped that this study will be very useful enough not only for the economical and secure design of pile foundation but also for the analytical work on pile bearing mechanism.抄録全体を表示PDF形式でダウンロード (956K) -
久我 新一原稿種別: 本文
1964 年 96 巻 p. 36-45
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーThe sound transmission loss (TL) of single glasses, bi-glasses, pair glasses, single windows and double windows were measured and analized theoretically. The frequency-characteristics of TL of single glasses were coincided with theoretical mass law (A. London) and has the valley of decrease due to coincidence effect (C. Cremer) in high frequency range. TL of bi-glasses were similar to single glass's which had total thickness of glasses used in bi-glasses used in bi-glass, but some increase in all frequency range were observed due to inserted material between glass-plates of bi-glass. On the frequency characteristics of TL of pair glasses, it should be mentioned specially that they have a valley of decrease due to resonance transmission in low frequency range [numerical formula], but in middle frequency range, f>f_r, they were improved considerably more than single glasses, so designation of situation of f_r would be very important to utilize pair-glass efficiently. TL of single windows were analized as they were resulted with the effects of glass and slit-like-opening around the window. And on the common type windows, the effect of openings were more evident, but on the air-tight type windows, the effect of glass were more prominent. On the TL of double windows, the damping effect between two windows is important. Smaller the damping is, lower the TL at resonance frequency, but higher the TL in middle frequency range will be. To lower the effect of damping, to larger the distance, d, between two windows is effective, especialy for the air-tight-type-double window, but for the common-type-double window the damping effect is not so much important as to the effect of the opening.抄録全体を表示PDF形式でダウンロード (1240K) -
鈴木 一原稿種別: 本文
1964 年 96 巻 p. 46-49
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーThis is the report of 1st investigation about relations on land cost and building volume in the central area of Tokyo. When a town-planner practise urbau renewal, it is important to decide building volume in the site. In Japan recently, land price is comperatively higher than other things. It is obvious in order to develope the project or to realize the plan, satisfaction of economical remuneration is most important condition for its authority or enterprise. The land price is higher, then the building volume must be higher, and there will be lower limitations concerning with economical remunerativeness, that will be in the range of the same or higher profitable rate with other general enterprises. This is of course in the private redevelopement, and by public authorities, if the rate is not proper there will be debt over the public aids. In the equations on economical remunerativeness in building operations reported on last report, there was seven factors. These factors can be classify in two groupes, those are building cost, profit rate, expense of maintenance, and land cost, rent, premium, ratio of building volume. The former gloupe will be able to assume by a technical study, but the latter is inpossible, it must be studied by the investigations of contemporary economical movement in real estate of the country. This report is the investigations of relations for rent, premium, land cost, and ratio of building volume in office buildings for rent in Tokyo. Relations of these factors are illustrated in graphs. These graphs show proportionate inclination in general, but the index of dispersion is high. There will be complicated conditions in the economical remunerativeness in buildigs for rent. In the next, the investigation of cause of dispersion will be scheduled.抄録全体を表示PDF形式でダウンロード (613K) -
原稿種別: 文献目録等
1964 年 96 巻 p. 50-53
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーPDF形式でダウンロード (273K) -
原稿種別: 付録等
1964 年 96 巻 p. App1-
発行日: 1964/03/30
公開日: 2017/08/30
ジャーナル フリーPDF形式でダウンロード (29K)
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