日本建築学会構造系論文報告集

表紙

原稿種別: 表紙
1989 年 395 巻 p. Cover1-
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_Cover1

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目次

原稿種別: 表紙
1989 年 395 巻 p. Cover2-
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_Cover2

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CONTENTS

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1989 年 395 巻 p. Cover3-
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_Cover3

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「日本建築学会構造系論文報告集ならびに日本建築学会計画系論文報告集」論文募集

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1989 年 395 巻 p. Cover4-
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_Cover4

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奥付

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1989 年 395 巻 p. Cover5-
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_Cover5

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鉄筋コンクリート構造物の施工荷重に及ぼすクリープおよび温度等の影響

山本俊彦

原稿種別: 本文
1989 年 395 巻 p. 1-12
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_1

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In curent formwork for concrete, the dead weight of beams and slabs during the placement of concrete is carried and supported by the previously cast floors below, by means of props. The load at this time is large. The present method of analysis for load distribution during construction is based on elastic theory. The main physically unjustified assumption in the present method of analysis is the neglect of creep and thermal deformations. The object of this paper is to present a method of analysis that takes creep and thermal deformations into account. Numerical analysis using the computer program are made to examine the effects of creep and temperature on load distribution during construction. The results of numerical analysis are compared with field measurements.

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ブラックパネル温度に基づく熱劣化予想マップ : 屋外での熱劣化環境の定量化(その1)

冨板崇

原稿種別: 本文
1989 年 395 巻 p. 13-20
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_13

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Heat is recognized as general degradation agent of most building materials. Therefore quantification of thermal degradation is essentialy important to discuss the durability. Based on the theory of chemical reaction rate, author proposed a thermal degradation simulation method to predict the service life of building materials. Introducing black-panel temperature, the property change of model material was estimated. The thermal degradation simulation method is consist of following steps. 1) From thermal aging test at several constant temperature, degradation material constants are obtained. Some supposed constants were used in this paper. 2) Black-panel temperature, which is an index of thermal degradation environment, is measured in outdoor and the relation between daily equivalent black-panel temperature and meteorological elements are analysed. The daily equivalent black-panel temperature in various area can be estimated by the observed meteorological data. 3) The property change of material can be calculated using daily equivalent black-panel temperature day by day, and the obtained results are plotted on a map.

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我が国における結露マップの提案 : 高分子系建築材料の耐久性に関する研究(その2)

冨板崇, 樫野紀元

原稿種別: 本文
1989 年 395 巻 p. 21-27
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_21

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Some deteriorations of polymeric building materials are caused by dissolusion of stabilizers and anti-degradation agents and hydrolyzation of base polymers. These chemical changes can be determined quantitatively by the wetness time. Dry wet cycle is an index of another type of moisture degradation which occurs under thin water layer, where water and oxgen in the atmosphere produce corrosion of metals under polymer coatings. The moisture in the air condenses into dew on the cooled surface of materials when it comes below dew point. The ISO/TC 156 WG 4 generalized that the meteological conditions of dewing occure humidity is higher than 80 % RH, also temperature is higher than the freezing point. According to this standard, wetness time and wet-dry cycle are calculated from meteorological data in Japanese observatories of recent 25 years. The estimated data are plotted on the map for discussing the differeneces of materials deteriorations by wetness.

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アレー地震動記録を用いた地震波の相関性と伝達特性に関する基礎的研究

和泉正哲, 栗田哲, 飯塚節夫, 佐藤智美, 相羽朋紀

原稿種別: 本文
1989 年 395 巻 p. 28-39
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_28

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In this paper, the coherence functions and transfer functions between the Fourier amplitudes, those between the Fourier phases of seismic waves recorded at several observation points in Higashimatsuyama instrument array were estimated by use of statistical methods proposed on the base of the least square variance technique. The relationship between the coherency and the estimated propagate transfer function of waves were derived. The following results are obrained; 1) The coherency of the Fourier amplitude between seismic waves is higher than that of the Fourier phase. 2) The coherency of the propagation transfer functions between seismic waves is dependent on that of the Fourier phase. These results indicated that the uncorrelated waves as noise exert the greater influence on the Fourier phase of seismic waves than on the Fourier amplitude. Those uncorrelated waves can be attributed to the scattering waves caused by irregularities of the soil structure.

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EP型,BX型接合部の正負交番荷重下の変形・破壊挙動について : 木柱-鋼梁接合部の耐力と靭性に関する実験的研究,その1

定方啓

原稿種別: 本文
1989 年 395 巻 p. 40-47
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_40

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The beam to column connection of the post and beam frame on the wooden building structures will have to be designed by concept of ductility and toughness connection, and this is the rational design concept of the characteristics of timber material. In this report (Part 1), author study the strength and ductility of a steel beam to wooden column connections with load versus deflection hysteresis loops under alternate cyclic loading. The connector type are consist of two group, the first is steel beam be jointed by a plain End Plate system connector to the wooden column, that is EP-type, and secondly is jointed by the attach stiffener for the purpose of reinfocement to end plate look like a part of Box Column that is BX-type. Experimental result indicate, EP-type is most effective connection system because tension bolts tighten the wooden column in a state of crevage flucture, therefor in a next paper (Part 2), I will report on the EP-type connection system varying the end plate thickness.

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偏平な付帯柱を有する連層耐震壁の曲げ降伏後の靭性に関する実験的研究

平石久廣, 都祭弘幸, 川島俊一, 井上芳生

原稿種別: 本文
1989 年 395 巻 p. 48-59
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_48

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The experimental study had shown that the final stages beyond flexural yielding of multistory shear walls (MSW) were mostly determined by compressive crushing of the columns and the panels. Therefore, the ratio (η_c) of compressive strength of the boundary columns to the compressive forces acting at the critical section under the yielding mechanism, was considered one of important factors to determine the deformation capacity of MSW. The five MSW specimens that were 1/4 scale models, showed lower 7 stories of a 11-story prototype building, and mainly focused on the effect of the ratio (η_c) on the deformation capacity were tested under reversing static loads. And the deformation behavior of MSW beyond flexural yielding was analytically investigated based on the test results. Major conclusions obtained from the investigations are as follows: (1) The ratio of the compressive strength of the boundary columns, to the axial force, definitely influences on the deformation capacity of MSW. (2) Beyond flexural yielding of MSW, there is a stable region of the deformation in which the deformation profiles along the height are uniform. In this stable region, MSW deform by rotational mechanism having the center of rotation at the base of the boundary columns under compression. (3) The drift angle Rt above the hinging region is nearly equal to the drift angle R_p and to the rotation θ_p at the top of the hinging region. However, this relation of R_i=R_p=θ_p disappears beyond the limit of the stable region of the deformation. So, the estimation of R_i in this region requires both θ_p and R_p.

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高強度鉄筋SD50を用いた鉄筋コンクリート梁・柱断面の曲げ解析

但木幸男, 田中礼治

原稿種別: 本文
1989 年 395 巻 p. 60-71
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_60

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The load-flexural deflection and the moment-flexural deflection relationships in test length of concrete beams and columns reinforced with high strength steel Grade SD 50 bars were studied analytically and compared with past test results. The analytical stress-strain curves for steel have been proposed on the experimental results of Grade SD 50 bars under alternatedly repeated loading. In this study, following conclusions were obtained. (1) The stress-strain curve proposed for steel seems to express experimental results of Grade SD 50 bars under alternatedly repeated loading. (2) For analysis of beam and column sections under monotonic loading, the overall strength and the stiffness, up to the maximum load seem to pursue the experimental results very well. But the analyses of column sections under large axial loading after maximum load were not in agreement with experimental results. (3) For analysis of beam and column sections under alternatedly repeated loading, the moment-flexural deflection relationships seem to pursue overall experimental results. Particulary, the assumptions of stress-strain curve for steel, that is, stiffness of strain hardening is E_s/50 and stiffness of unloading is E_s, seemed to be reasonable.

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非線形システムの不規則応答解析における重み付き最小二乗化による等価線形化法およびその応用

和泉正哲, 李再明, 木村正彦

原稿種別: 本文
1989 年 395 巻 p. 72-83
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_72

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高層建築物の強風時風向直角方向応答加速度の性状ならびに予測に関する研究

藤本盛久, 大熊武司, 赤木久真, 鈴木雅靖, 丸川比佐夫

原稿種別: 本文
1989 年 395 巻 p. 84-92
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_84

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This paper shows the characteristics of wind-induced accelerations of box-like high rise buildings obtained by the wind tunnel tests. For the model, the scaled model of an existing-building and parametrical arranged models are used. The test results of the scaled model are compared with ones of the full scale measurement. Furthermore a statistical estimation method for across-wind acceleration responses of box-like high rise buildings is shown. Main results are as follows. (1) Experimental results are close to the full scale ones. (2) Correlation between the along-wind acceleration and the across-wind one is poor. (3) Characteristics of fluctuation of the accelerations seem to be the narrow-band random process. (4) Standard deviations of the accelerations are in proportion to about 3 rd power of mean wind velocity. (5) Estimated accelerations by the suggested method are close to the experimental results and the full scale ones.

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テンション構造の形態の理論について

安宅信行

原稿種別: 本文
1989 年 395 巻 p. 93-100
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_93

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This paper is described of the theory for finding a configuration of tention structures, which is equilibrium under initial stress. This problem has been treated as the special case of the mechanics of continuous media. The purpose of this study is to establish the configuration theory which can explain past various formulations and experiments for this problem, and can treat this problem as the routine work of the mechanics of continuous media. In order to treat this problem as that of the mechanics of continuous media, we introduce the concept of O^<th> elasticity, which is a concept of material, and involve ideal fluid as one of isotropic materials of O^<th> elasticity, and its properties are discussed in detail in this paper. Having intrduced this concept, we can treat this problem as same as that of other continous media, and introduce the principle of extreme potential energy. And this concept shows theoretical foundation that the configuration of equitention can be obtained from the experiments of soap film.

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最適化手法を用いた膜構造物の裁断図解析

坪田張二, 吉田新

原稿種別: 本文
1989 年 395 巻 p. 101-111
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_101

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Current structural design methods for determining the initial equlibrium configuration of membrane structures are based on the assumption that the membrane stress distribution is uniform all over the surface. However, a typical method of fabricating these structures is to divide the complex curved surface into a number of plane membrane strips called 'cutting patterns', which are then assembled and finally stretched between fixed boundary members. Presently, the cutting pattern is obtained by dividing the curved surface into several approximate plane developed strips by utilizing geodestic lines, and then obtaining the cutting pattern by estimating the membrane elongation corresponding to the initial membrane stress distribution. Errors occur in developing the non-developable curved surface and also in estimating the membrane elongation. Therefore, the actual stress distribution deviates from the assumed uniform stress state and the accuracy of the cutting pattern is considered to be an important factor affecting the behavior and safety of actual membrane structures. In this paper, a new analytical method for producing a more accurate cutting pattern by utilising an optimization technique is proposed. The optimum cutting pattern is definde so that the membrane stress distribution in the actual initial equilibrium state becomes as closely as possible to the uniform stress distribution assumed in the design stage. An optimization problem is formulated and solved for determining the geometry of the optimum cutting pattern. The proposed method is applied to simple membrane structural models. As the results, it is found that the optimum cutting pattern obtained from the proposed method is able to form the close stress distribution to the uniform one assumed in the design, and the necessity of the proposed method for producing the accurate cutting pattern is confirmed. The applicabilty and validity of the proposed method are also verified through simulation analysis of an actual fabrication process for an actual membrane structure.

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鉛直力を受ける鋼管杭の水平挙動に関する非線形解析法 : その2:群杭について

冨永晃司

原稿種別: 本文
1989 年 395 巻 p. 112-120
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_112

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This paper is the second of two papers dealing with the nonlinear analysis of the lateral behavior of steel pipe piles axially and laterally loaded to failure. In the first, the problem of single piles was examined. In this paper, an analytical method is presented for the nonlinear lateral behavior of pile groups subjected to simultaneous axial and lateral loading, and the analysis is then applied to various examples of square groups of piles in relatively loose sand. The conclusions of this paper may be summarized as follows. 1) The general characteristics of group behavior are similar to those for single pile discribed in previous paper. For example, the vertical force influences the .lateral behavior of pile group, and because of additional moment caused by pile deflection at relatively high vertical load levels, the lateral load-displacement curve has a peak. 2) The group reduction factors based on the lateral resistance at any given displacement are examined. It is found that the group reduction factor tends to increase as the displacement from which the factor is estimated increases, and that the value is maximum at the peak of lateral resistance. 3) The change of moment distribution of individual pile in the groups with increasing lateral displacement and the ultimate state of pile group foundations are discussed.

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鋼梁-柱部材の加熱時構面内弾塑性クリープ変形挙動に関する研究

古村福次郎, 右田健児, 安部武雄, 岡部猛, 金和中

原稿種別: 本文
1989 年 395 巻 p. 121-131
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_121

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Numerical studies on the elasto-plastic creep thermal deformation behavior of steel beam-columns at elevated temperatures are carried out to get information for the fire safety design of steel frames. The combined nonlinear analysis method by the one-dimensional finite element technique is adopted to simulate the beam-column behavior, in which the mechanical model of steel material at continuously varying temperature proposed by F. Furumura in Ref. 5) is used. The slenderness ratio, the axial load ratio, and the moment load ratio of steel beam-columns are selected for analytical parameters. The influence of the reduction of mechanical properties and the increase of creep strain in steel materials at high temperature on the behavior of steel beam-columns and the influence of the beam pushing action on the collapse temperature of beam-columns are investigated.

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計画系論文報告集目次 No.395 1989・1

原稿種別: 付録等
1989 年 395 巻 p. App1-
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_App1

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裏表紙

原稿種別: 表紙
1989 年 395 巻 p. Cover6-
発行日: 1989/01/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.395.0_Cover6

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