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190 巻
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原稿種別: 表紙
1971 年190 巻 p. Cover1-
発行日: 1971/12/30
公開日: 2017/08/22
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原稿種別: 表紙
1971 年190 巻 p. Cover2-
発行日: 1971/12/30
公開日: 2017/08/22
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原稿種別: 目次
1971 年190 巻 p. Toc1-
発行日: 1971/12/30
公開日: 2017/08/22
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原稿種別: 付録等
1971 年190 巻 p. App1-
発行日: 1971/12/30
公開日: 2017/08/22
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川上 英男原稿種別: 本文
1971 年190 巻 p. 1-10,97
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリーIt has been reported previously by the author that at a given mortar the larger is the size and the greater the volume fraction of gravel, the lower is the compressive strength in one size gravel concrete. And an interpretation was presented that the strengh of one size gravel concrete can be represented in a plane defined by the size and the volume fraction of gravel. The present report discusses the character of the strength plane with reference on consistency of concrete. The volume fractions of gravel in concrete and of sand in mortar are taken up as the factors influencing the consistency of concrete. It is shown that the concrete strength of the same consistency is represented as a line on the strength plane when the consistency is ajusted by the size and the volume fraction of gravel and that the strength plane can be assumed to be constructed with these lines. Test result shows that the larger is the sand content in mortar, the smaller is the strength deduction of concrete from the mortar strength and the value of strength deduction is the same at any water cement ratio when mix proportion of cement paste, sand and gravel is kept the same. Thus the sand content in mortar is thought to play important role in strength of concrete as well as water cement ratio, the size and volume fraction of gravel.抄録全体を表示PDF形式でダウンロード (1085K) -
中西 正俊原稿種別: 本文
1971 年190 巻 p. 11-20,97
発行日: 1971/12/30
公開日: 2017/08/22
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杉山 英男, 中田 和夫原稿種別: 本文
1971 年190 巻 p. 21-26,97
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリーThe shear racking tests were made on the prefabricated wall panels with opening constructed with wooden framing and rawan plywood facings. Effectiveness of the formulae proposed by the author, predicting the shear stiffness and maximum load of the wall panel of the above type from the shear stiffness and maximum load of the wall panel without opening, is examined by the above test results. In this paper the results of the wall panels with openings of window and door types are examined, while vertical slit, horizontal slit and window were selected as the types of opening in the previous paper. The dimensions of the panels in this paper are larger than those of previous paper's panels.抄録全体を表示PDF形式でダウンロード (614K) -
山田 孝一郎, 竹内 重夫原稿種別: 本文
1971 年190 巻 p. 27-33,98
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリー本文は, 既論その5.1(弾性性状)につづくもので, 偏心でない節点をもつ剛節トラス(弦材 : T形鋼, 腹材 : 鋼管)を対象として, その上弦材節点部載荷時における実験を行ない, その耐力と剛性を弾性より弾塑性をへて破壊にいたるまで追跡し, これらの結果を, トラスとしての特殊性(一次応力は軸力であり曲げは二次応力)を考慮した仮定, すなわち仮定1 : 部材の応力度-ひずみ度曲線を完全弾塑性の二直線とする。仮定2 : 部材の降伏曲線(Mp-N曲線)を求めるに当り, 軸力と曲げのみを考慮し, せん断の影響は無視する。仮定3 : 部材において塑性ヒンジの形成個所以外は弾性とし, かつ部材の変形にともなう軸力による付加曲げモーメントの影響は無視する。仮定4 : トラスの荷重が増大している場合, 或荷重(P)のもとで或部材の一部分に塑性ヒンジが形成されるとき, この荷重以上の増分荷重(⊿P)に対して, 既に形成されている塑性ヒンジは, その増分荷重に対応する軸力の増分(⊿N)により, その部材の降伏曲線を満足するようその負担曲げモーメントが変化(⊿M)する塑性ヒンジとする。仮定5 : トラスの荷重が増大している場合, 或荷重(P)のもとで或部材が引張軸力(圧縮軸力)Nと曲げモーメントMにより全長にわたり降伏するとき, その荷重以上の増分荷重(⊿P)に対して, この部材はその全断面積(A)のなかで圧縮応力度(引張応力度)のみが作用している断面積(⊿A)のみが増分引張軸力(増分圧縮軸力)⊿Nに対して弾性として作用し, その部材の両端に仮定4を満足するような塑性ヒンジをもつ部材とする。を用いた弾塑性解析法(塑性ヒンジ理論)による解析結果と対比して, このような荷重状態における偏心でない節点をもつ剛節トラスの弾塑性性状を実験的並びに理論的に究明し, かつ上記弾塑性解析法の妥当性をも検討したものである。また節点部載荷時における剛節トラス(弦材 : T形鋼, 腹材 : 鋼管)の耐力と剛性が, その節点構成法, すなわち, 偏心でない節点をもつものと, 偏心節点をもつものとで, どのように変化するかを比較検討した。抄録全体を表示PDF形式でダウンロード (821K) -
伊藤 哲次, 山原 浩原稿種別: 本文
1971 年190 巻 p. 35-41,98
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリーThe linear acceleration method and Runge-Kutta method have been generally used for the earthquake response analysis of structure. These methods are effective when the earthquake input is given by acceleration acting at the base of structure. In the case, however, when the input mechanism of earthquake to the base of structure and the interaction effect between soil and structure are taken into consideration, the earthquake signal after passing through some transfer function should be applied to the base of structure. It is comparatively easy to analyse the transfer mechanism by assuming the input earthquake as a harmonic wave, and the general characteristic of the mechanism is expressed usually as a function of frequency of vibration. Thereby, it becomes almost unable to analyse the response of structure by random earthquake using linear acceleration method or other similar methods. In those cases, it is convenient that the earthquake response of structure can be obtained by compounding responses due to harmonic waves. To achieve this, random earthquake is expanded into trigonometric series by Fourier transform, and the random response of structure has been reduced to the problem of harmonic response in this study. As the result, the method by Fourier transform was proved to give enough accuracy and to be carried out by economical speed.抄録全体を表示PDF形式でダウンロード (641K) -
山田 稔, 河村 広原稿種別: 本文
1971 年190 巻 p. 43-50,99
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリーThe aseismic capacity of medium or low rise rectangular reinforced concrete rigid frames with shear walls is discussed here through the comprehensive treatment of such reinforced concrete structures which are assumed to be composed of three aseismic elements, i.e. long column units (LCu), short column units (SCu) and shear wall units (SWu) (cf. Fig.1). The total aseismic capacity is able to be estimated by the total deformation characteristics of such elements. The fracture modes, the natural periods and the critical numbers of stories of reinforced concrete structures are characterized by the combination of these three aseismic elements (cf. Figs.8 (a), (b)). These figures show that the shear walls have the largest influences upon the aseismic safety and the effects of sufficient web reinforcement (η1≧1%) of short columns are very large too (cf. Fig.15). A new comprehensive aseimic design method of medium or low rise reinforced concrete buildings with shear walls is presented here in this paper based upon the general deformation behaviours of such structures. and a checking and a stiffening method of already exixting reinforced concrete buildings is proposed here too.抄録全体を表示PDF形式でダウンロード (814K) -
大越 俊男原稿種別: 本文
1971 年190 巻 p. 51-57,99
発行日: 1971/12/30
公開日: 2017/08/22
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藤本 盛久, 橋本 篤秀原稿種別: 本文
1971 年190 巻 p. 59-67,99
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリーIt is known that spring constant of the plates is the most important factor in estimating tension type joints strength. Up to present, the absence of exact solution of both range of stress distribution inside of the plates and amounts of displacement of plate surface created by fastened bolts may be accounted for a barrier in direct estimation of joints strength. Thus estimation of exact solution of these two aspects on individual plates seems to be very important in analysis of tension type joints strength. The previous report describes theoretical and numerical analysis of exact solution of above two aspects using three dimensional elastic theory, and thereafter approximate equations to be useful for practical calculation of both spring constant and range of stress distribution inside of bolted plates were introduced. Now, in this report, changes of both bolt tension and plates' bending moments of T-stub joints, which was fastened with high tensile bolts, under various external tensions were theoretically estimated by new methods using the results of the previous report. Strength of joints under various tensions were further substantiated experimentally. All experimental values were in good agreement with those obtained by theoretical computation at corresponding conditions. Therefore, simple approximate equations here introduced can be applicable for practical estimation of T-stub joints strength. Similar approach may also be applicable for estimation of strength of more complicate tension type joints.抄録全体を表示PDF形式でダウンロード (934K) -
原稿種別: 文献目録等
1971 年190 巻 p. 67-
発行日: 1971/12/30
公開日: 2017/08/22
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松本 明男原稿種別: 本文
1971 年190 巻 p. 69-78,100
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリーA comparative study of the costs of structure was made with brief structural calculations and cost estimates by varying the areas of classroom and the methods of structural framing of 3 to 6-story reinforced concrete school buildings. 44 examples on Type I which have the inner walls designed as the anti-seismic wall, and another 12 examples on Type II which are not designed with such walls. Generally speaking, the cost of reinforced concrete structure for school buildings becomes less as the area of classroom becomes larger. In case of Type I, 4-5-story Plan A, 3-5 story Plan B, and 3-story Plan C are the most inexpensive amonong each type. On the other hand, 6-story buildings in each type are the most expensive. Comparing the 7×9 meters classroom of 4-story schools. Plan B and C are 6% and 12% respectively more in comparison to Plan A, and the ratio of cost in respect to the height of building is only 2%. In case of 7×9 meters classrooms of Type II, 4-story school is the cheapest, but the 6-story is the most expensive. The cost difference in respect to the height of building are as follows. Plans A and B, 1%, Plan C, 3%. Plan C is 4-5% more than Plans A and B. Since Type II must resist the earthquake load only by the rigid frame, without the anti-seismic wall reinforcements like Type 1, approximately 20 to 40% more steel will be required.抄録全体を表示PDF形式でダウンロード (1266K) -
井柳 光雄, 青木 志郎原稿種別: 本文
1971 年190 巻 p. 79-86,100
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリーIt is the purpose of this paper to research into the space organisation of the present rural region and its structure, and to investigate the desirable method of rural planning by pointing out some problems existing in this space structure. As a result of this report, it is proved that the major, space structure of the present rural area is composed of farm, Agricultural Cooperat on and home stead, besides that the functional relationship of the three spaces is irrational. It is arisen from a private enterprise system in Japanese agriculture. Therefore, it is necessary to consider that the desirable rural planning should be made a start from the reform of agricultural product system.抄録全体を表示PDF形式でダウンロード (944K) -
岩楯 保原稿種別: 本文
1971 年190 巻 p. 87-95,100
発行日: 1971/12/30
公開日: 2017/08/22
ジャーナル フリーThis dissertation is statistical analysis by the specimens of Japanese style for proportional relation. (1) In this study, No.1, stalistics are Coefficient of correlation, signifficant level, regression line, standard deviation and breadth between the 2 lines pavalled to the regretion line. (2) In the statistical phenomena, the mutual relation (correlation) is diffrent from the proportional relation. The proportional phenomenor are to have next statistics, that is to say. (A) It is to has mutual relation in the significant level at 0.001. (B) Both standard deviation and the breadth of 2 straight lines are to have neally zero. (3) this study has statistical analysis of the mutual relation between specimens in Zen style and make it a rule to a basis of the statistical analysis in Japanese style for the proportional retation. (4) The other method of statistical analysis has a correlational model for experiment and it is basis of statistical relation in Japanese style.抄録全体を表示PDF形式でダウンロード (1497K)
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