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鋼構造論文集 Vol. 2 (1995), No. 5

ISIJ International
belloff
オンライン版ISSN: 1884-0329
冊子版ISSN: 1880-9928
発行機関: Japanese Society of Steel Construction

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  30. Vol. 2 (1995)

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    3. No.6
    4. No.5

  31. Vol. 1 (1994)

    1. No.4
    2. No.3
    3. No.2
    4. No.1

キーワードランキング

16 May. (Last 30 Days)

鋼構造論文集 Vol. 2 (1995), No. 5

建築鉄骨における溶接接合部の合理化と自動化・ロボット化

中込 忠男, 軽部 正彦, 藤田 哲也

pp. 1-15

DOI:

10.11273/jssc1994.2.1

抄録

In construction of steel buildings, the Beam-to-Column connection is one of the most important component in it. The structural design of Non-Scallop forms have improve the mechanical properties than a beam with normal scallop forms. Otherwise the technique of welding robot has completed in flat position welding, but not yet in other position welding. In this paper, we subscribe about the Rationalization of Beam-to-Column welding connection for steel Building with Non-Scallop structural joint design. And we also subscribe about the Automation and Robotization of these welding connection. According to this manuscript, Applying Non-Scallop method and Welding robots makes more efficiency and more rationality.

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建築鉄骨における溶接接合部の合理化と自動化・ロボット化

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Ris

起重機船を用いた大ブロック架設におけるフック荷重管理システムの開発

迫田 治行, 江上 武史, 酒井 有哲

pp. 17-26

DOI:

10.11273/jssc1994.2.17

抄録

The Rokko Island Bridge is a double deck steel arch bridge. It has 215.35m single span length and weights about 7, 000 tons. The bridge was assembled in a fabrication yard by the sea, and then lifted up, transported and erected as a whole bridge in 1992 by cooperation of three floating cranes. A new control system was developed and employed in order to ensure the safety of the bridge during erection. Lifting loads acting on each hooks of three floating cranes were measured and adjusted by the system. This paper presents this new control system.

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起重機船を用いた大ブロック架設におけるフック荷重管理システムの開発

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EARTHQUAKE RESPONSE OF CABLE-STAYED BRIDGE IN CONSIDERATION OF SOIL-STRUCTURE INTERACTION

Teguh RAHARDJO, Toshiyuki SUGIYAMA, Yasuharu FUKASAWA

pp. 27-36

DOI:

10.11273/jssc1994.2.27

抄録

The effect of soil-structure interaction upon the response of cable-stayed bridge subjected to a strong earthquake motions is investigated. The effect is evaluated by comparing its responses to the responses of rigidly supported base condition model. The strong earthquacke motions are represented by artificial earthquake motion in which the the characteristic values of ground condition adopted in Japanese Specification for Highway Bridges (JSHB) are considered. The results indicate that the soil-structure interaction effect should not be ignored when considering the safety of a long cable-stayed bridge.

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厚肉少補剛断面を有する鋼製橋脚の経済性と耐震性評価

富永 知徳, 安波 博道

pp. 37-51

DOI:

10.11273/jssc1994.2.37

抄録

A steel bridge pier cross section, which is consisted of comparatively thick wall and is stiffened by less number of stiffeners, is proposed from the view of seicemic capacity and construction costs. At first various cross-sections are designed and evaluated from the view of costs. Then, tests and analysis are undertaken to evaluate the seicemic capacity of proposed structures. The test specimens were cantilever steel box columns, modeling one-tenth scale steel bridge piers. Cyclic loading tests and on-line tests, simulating real earthquake response, were done on the specimens. Analysis was also done for the various cases of earthquakes and weight of superstructures. The steel bridge piers are proved to have enough seicemic capacity.

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厚肉少補剛断面を有する鋼製橋脚の経済性と耐震性評価

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高力ボルト首下丸み部の応力集中緩和に関する解析的研究

脇山 広三, 金 振鎬, 多田 元英

pp. 53-58

DOI:

10.11273/jssc1994.2.53

抄録

Fatigue fracture or delayed fracture often occurs at the threaded portion or the underhead fillet of high-strength bolts where the stress concentrates. In order to reduce the stress-concentration at the threaded portion, we have already proposed the improved thread shape. In this paper, the cone shape head is proposed to reduce the stress-concentration at the underhead fillet. The efficiency of this shape is analyzed by the FEM in which the parameters are the radius of the fillet and the angle of the bearing surface at the underhead.

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高力ボルト首下丸み部の応力集中緩和に関する解析的研究

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コンクリート充填鋼管柱の長柱耐力に関する解析的検討(偏心圧縮耐力と3点曲げ圧縮耐力の比較検討)

伊藤 茂樹, 岡本 晴仁, 下川 弘海

pp. 59-65

DOI:

10.11273/jssc1994.2.59

抄録

Strength of slender composite columns subjected to axial force and bending moment is usually calculated as reduced strength from full plastic strength depended on slenderness ratio. In order to have the maximum strength of such columns, eccentric axial compression test mainly have been conducted. But actual distribution of bending moment of a column during earthquake is often different from the distributionunder such experimental loading condition. In this paper, the effects of the moment distributions or loading conditions on the strength of the composite slender columns are calculated by analytical procedure(CDC method). Comparison between experiments and calculations and between loading conditions are investigated and, it is concluded that nominal bending moment of 3-points bending condition is about 10-50 % higher than eccentric axial compression.

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コンクリート充填鋼管柱の長柱耐力に関する解析的検討(偏心圧縮耐力と3点曲げ圧縮耐力の比較検討)

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