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鋼構造論文集 Vol. 24 (2017), No. 94

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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鋼構造論文集 Vol. 24 (2017), No. 94

板曲げを受けるストップホール間のき裂のICR処理による貫通防止効果

松本 理佐, 石川 敏之, 塚本 成昭, 河野 広隆

pp. 94_1-94_9

抄録

In the previous study, it has been clarified that stop-holes drilled at tips of crack initiated at welded toe between steel deck plate and vertical stiffener promote crack initiation between stop-holes at the upper side of deck plate. In this study, to prevent the crack initiation at the upper side of deck plate, crack initiated at weld toe of deck plate is closed by ICR treatment. Furthermore, the prevention effect on crack initiation between stop-holes at the upper side of the deck plate was clarified by bending fatigue tests and FE analysis.

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板曲げを受けるストップホール間のき裂のICR処理による貫通防止効果

鉄骨置屋根形式建屋における屋根支持部損傷軽減のための耐震補強方法に関する研究

浅里 和茂, 堀川 真之, 日比野 巧, 清水 健次

pp. 94_11-94_21

抄録

From The 2011 off the Pacific coast of Tohoku Earthquake damage of RC concrete building with steel roof, a new damage has surfaced. Therefore, we were subjected to elastic-plastic response analysis of this building. Then, a new seismic retrofitting method have been proposed. As a result, when the sectional area of the roof brace is increased, the reinforcing effect is not changed even just the outer peripheral. At that time, the cross-sectional area is required about twice. In order to reduce damage to the roof joint, knee brace reinforcement is effective. This reinforcing method can reduce or omit the anchor bolts.

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鉄骨置屋根形式建屋における屋根支持部損傷軽減のための耐震補強方法に関する研究

鋼製独立柱とのダンパ一連結による木造住宅の耐震性能向上法(2階補強と併用する場合の設計手順)

服部 梨紗, 辻 聖晃

pp. 94_23-94_34

抄録

The purpose of this paper is to propose a seismic reinforce method for wooden house such that the 1st floor of a wooden house with insufficient seismic performance is connected by means of oil dampers to steel columns, and to disclose basic properties of seismic reinforcement effect of the method in cooperation with reinforcement of 2nd story in general method. Design procedure of the proposed seismic reinforcement method is presented and validity of the procedure is shown through design examples.

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鋼製独立柱とのダンパ一連結による木造住宅の耐震性能向上法(2階補強と併用する場合の設計手順)

支承部に着目した斜角を有する鋼鉄道橋の地震応答特性

和田 一範, 池田 学

pp. 94_35-94_47

抄録

Enough studies have not been conducted up to now about the characteristic of bearings of skew bridges during earthquake. In this paper, we have conducted the monotonic loading test of the bearings by acting force in various directions, in order to evaluate non-linear property of the bearings in the respective directions. As a result, it was found out that the strength of bearings could be evaluated by the shear capacity regardless of directions. Moreover, we have conducted dynamic analyses of the steel railway bridges with different skew angles. As a result, it was found out that the bearings of the bridges with skew angles were easily damaged and the bearing at the obtuse corner was firstly damaged.

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支承部に着目した斜角を有する鋼鉄道橋の地震応答特性

長周期地震動に対する CFT柱部材の保有性能に関する研究

城戸 將江, 福元 敏之, 津田 惠吾, 一戸 康生, 森田 耕次

pp. 94_49-94_64

抄録

It is an urgent issue to formulate a design method for concrete filled steel tubular structures against the long duration earthquake. This report shows the results of the study and research about the cyclic rotation capacity of the square concrete filled steel tubular columns against the long period ground motion. The experimental results by previous studies and this committee are introduced and the outlines of the fatigue properties of square CFT columns subjected to the axial force and cyclic lateral loading with constant deformation are given.

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長周期地震動に対する CFT柱部材の保有性能に関する研究

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