日本建築学会構造系論文報告集

表紙

原稿種別: 表紙
1989 年 399 巻 p. Cover1-
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_Cover1

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目次

原稿種別: 表紙
1989 年 399 巻 p. Cover2-
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_Cover2

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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募集規程

原稿種別: 付録等
1989 年 399 巻 p. App1-
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_App1

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CONTENTS

原稿種別: 表紙
1989 年 399 巻 p. Cover3-
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_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

原稿種別: 付録等
1989 年 399 巻 p. App2-
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_App2

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奥付

原稿種別: 付録等
1989 年 399 巻 p. App3-
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_App3

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ARモデルを用いた強震地動の震源特性推定手法に関する研究 : 解析手法と理論記象への適用

北川良和, 井上貴仁, 西出俊夫

原稿種別: 本文
1989 年 399 巻 p. 1-7
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_1

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In order to use the synthetic ground motions calculated from the fault model as input motion for earthquake resistant design of structures, it is necessary to estimate the characteristics of the source time function correctly. In this paper, the estimation method of the source time function by applying the auto regressive (AR) model to the observed ground motions for the purpose of estimating the dynamic properties of the ground surface and the seismic path is proposed. Further, this procedure is applied to the synthetic waves calculated from the fault model in order to verify this method. As a result, the waveform obtained by using this method corresponds to the source time function of the seismic moment. These results agree with the condition given for the fault model analysis and it is pointed that this analytical method using the AR model is available to estimate the source time function from the observed ground motions.

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3要素Maxwellモデルを用いた鉄筋コンクリート骨組の地震応答解析法

藤本盛久, 和田章, 木村雄一

原稿種別: 本文
1989 年 399 巻 p. 9-17
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_9

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The dynamic behavior of a reinforced concrete structure under earthquake loading differs from static behavior because its structural elements deform with their strain speed. In this paper, the adequacy of a analytical model with a three-element-Maxwell model taking the effect of deformation speed on the ends of structural elements into account was examined, and the analytical results were compared with experimental results. And a dynamic response analysis of reinforced concrete frames using this model was carried out. As a results, it was shown that this model can explain the increase of strength of structural elements caused by the deformation speed, and thus enable earthquake response analysis considering the effect of strain speed.

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圧延H形鋼の機械的切断に伴う残留応力の変動 : 圧延H形鋼の残留応力と破壊靭性 : その1

中山昭夫, 金多潔

原稿種別: 本文
1989 年 399 巻 p. 19-25
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_19

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There is residual stress in rolled or welded steel members, and the residual stress is in a state of equilibrium. This residual stress, however, changes the magnitude when a certain disturbance is applied, for instance, cutting or heating. In this paper, the authors deal with the residual stress of wide flange steel shapes and its change in the cutting process by machine saw. To clarify its change in cutting process, the authors carried out the experiment and verified that the residual stress changes exceedingly by means of cutting and, in the worst case, the wide flange shapes may be fractured without external forces.

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高速載荷時の鋼構造接合部の力学的挙動に関する実験的研究 : その3. 載荷速度の影響を考慮した接合部の力学的特性

金多潔, 甲津功夫, 藤村和男, 篠原祥, 木上貴夫

原稿種別: 本文
1989 年 399 巻 p. 27-36
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_27

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We have mentioned in our previous paper the experimental results of the static and the high speed tensile loading on the tower-shaped steel structure paying attention to the joint which is conceivably one of the most critical sections of the said structure. This paper describes the outline of our quantitative consideration of the relation between stress and strain on the basis of the results of both the previous experiment as mentioned above and the recent experiment of the static and the high speed tensile loading on specimens composed of steel angles and gusset plates.

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2方向地震動を受ける無限均等ラーメン構造の弾塑性応答性状

和田章, 広瀬景一

原稿種別: 本文
1989 年 399 巻 p. 37-47
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_37

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In building frames designed to resist earthquakes, the girders usually have a lower yield moment than the columns. This arrangement distributes the inelastic action among many frame members, leading to good overall energy dissipation. By contrast, the damage in a weak-column structure is concentrated in particular story, with potentially disastrous results. Studies on the column/girder strength ratio required for creating a weak-girder frame subjected to one-directional seismic motion have been carried out by many researchers. But there are few studies of the behavior of frames subjected to bi-directional ground motion. In this paper, a simplified frame model is used to study the inelastic dynamic behavior of a 10-story frame subjected to bi-directional horizontal ground seismic motion. By changing the column/girder bending strength ratio, the column strength required to create a weak-girder frame and the energy input to the structure are examined. The effects of bi-directionality and orientation of the input motions on the behavior are also examined. The girder flexibilities are represented by elasto-plastic rotational springs. The columns are modeled as rigid members, joined by springs at mid story height. The force-deflection relationships governing relative rotation and relative horizontal displacement of two contiguous column segments were derived independently. The story drift, which includes the displacements caused by both reversed curvature bending and shear, is modeled by a multiple shear spring (MSS) system. The purpose of the MSS model is to simulate a bi-directional inelastic spring, including interaction between the two directions. It consists of N displacement springs arranged radially around a circle.

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局所積分の概念を用いた確率有限要素法

高田毅士

原稿種別: 本文
1989 年 399 巻 p. 49-57
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_49

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This paper, introducing local integration, formulates a new stochastic finite element method for estimating the response variability of multi-dimensional stochastic systems. Young's modulus is assumed to have a spatial variation and is idealized as a multi-dimensional continuous Gaussian stochastic field. An essential feature of the proposed method is that the continuous stochastic field is rigorously taken care of by means of local integrations to construct element stiffness matrices, as the results, the issue involving the stochastic field is transformed into a problem involving only a few random variables, and the perturbation technique is then utilized with considerable ease. This may lead to substantial improvement in computational efficiency. And the accuracy of the solution from the proposed method appears to be independent of the way in which discretization is performed, whereas the problem associated with the convergence of the solution from conventional methods, which are based on a discretized stochastic field, always remains in any case. In this paper, it is shown that stochastic stiffness matrices can be easily derived from the principle of complementary virtual work, when the spatially varying Young's modulus is idealized as mentioned above. In order to examine the validity of the proposed method, two kinds of stochastic structures subjected to deterministic loads; a portal frame and a plane stress plate, are analyzed. As the results, the proposed method has a great advantage not only in the computational cost but also in the solution accuracy. Finally, it should be emphasized that the formulation of this method is so systematic that it can be easily extended to various engineering problems.

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台風に起因する強風の極値分布についてのシミュレーションによる考察 : ポアソン確率モデルに基づく最大風速の極値分布(その3)

牧野稔, 前原智

原稿種別: 本文
1989 年 399 巻 p. 59-64
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_59

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Most part of the Japanese Islands belongs to a region of not well behaved wind climate. Observed annual maximum wind speed distributions in this region are generally not so smooth. However asymptotes of the extreme value distribution have frequently applied to these distributions to obtain the probabilities of design wind speed. It seems to be difficult to estimate the population of the distributions correctly. Strong winds caused by tropical storms can be estimated adequately by a probabilistic procedure based on statistical properties of the tropical storms. Simulations based on the same procedure may be yield sample distributions easily from a known population. We can investigate a fitting problem of distributions with samples from the known population. The Type III extreme value distribution is well applied to the samples representing a record of 30 years. But the samples hardly lead to the population as anticipated. It is newly recognized that the samples having large values provide large coefficients of variation.

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地震荷重および地震地域係数に関する研究

牧野稔, 清家規

原稿種別: 本文
1989 年 399 巻 p. 65-71
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_65

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A seismic zoning map for the building standard law in Japan was first set up in 1952 taking account of not only historical seismic activity but also political wisdom. Development of this kind of map was so slow that nearly the same map has been adopted to a newest building regulation. There was no remarkable study to stimulate the political wisdom. A cost-benefit model is employed to investigate adequate seismic design coefficients for buildings to withstand destructive earthquakes. The model consists of a profit for rent, a charge for initial and maintenance costs and a damage loss due to collapse in a unit area of a building. The initial and maintenance costs are functions of a design acceleration. It is assumed that building collapse occurs when ground acceleration exceeds a specific design acceleration. The probabilities of ground acceleration at four sites in Japan are taken from a report investigated by a probabilistic analysis base on a Poisson' s process of earthquakes and Gutenberg-Richiter's law. The adequate level of design acceleration may be determined from the level at which the maximum net profit is given. For seismic zoning factors the parameters of the model are modified with the economical factor of the sites. Obtained results are: 1) The adequate level of the design earthquake is at about a 90 percent probability of not being exceeded in a 50 year interval. 2) Net profits are not sensitive near the adequate level so that over strength design is rather recommendable than underestimated design to avoid unexpected severe damage. 3) The seimic zoning factors currently used in Japan for buildings are adequate if the design level in Tokyo is adequate, otherwise are questionable.

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煙感知器連動防火扉の定期点検に関する研究 : 点検記録を用いた故障時間解析と可動率推定

朴哲也, 辻本誠

原稿種別: 本文
1989 年 399 巻 p. 73-80
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_73

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At first in this study the failure distribution of an interlocking fire door with a smoke detector was determined by analyzing the periodical inspection records. Next based on the failure distribuion the interval availability of the equipment, to which the periodical inspection and the corrective maintainance were executed, was evaluated. By considering the failure modes of elements of the equipment, an interlocking fire door with a smoke detector was divided into two units. The failure distribution of the unit 1, composed of the elements which are broken by sudden failures, is exponential with the failure rate λ=l/4, 341 [failures/day]. While, to the unit 2 mainly composed of electric elements, there may exist some uncertainty on determining the failure distribution whether the exponential distribution with the failure rate λ=1/13, 504 [failures/day] or the normal distribution with the mean μ=5,000 [days] and S. D. σ=2.200 [days]. In the case that these two units constituted a system in series, it was found with numerical simulations that the inspection interval which maximized the interval availability was about 100 days. And it was found that the interval availability became larger at most about 0. 02 if the exponential distribution was assumed as the failure distribution of the unit 2.

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計画系論文報告集目次 No.399 1989・5

原稿種別: 付録等
1989 年 399 巻 p. App4-
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_App4

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裏表紙

原稿種別: 表紙
1989 年 399 巻 p. Cover4-
発行日: 1989/05/30
公開日: 2017/12/25

DOIhttps://doi.org/10.3130/aijsx.399.0_Cover4

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