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| 1.
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論文
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冨田, 充宏 ; 前川, 幸次 ; 梶川, 康男 ; Tomida, Michihiro ; Maegawa, Koji ; Kajikawa, Yasuo
概要:
金沢大学理工研究域環境デザイン学系<br />本研究は, プレストレスにより互いに密着しているプレキャスト部材の非線形挙動を解析的に検討するため, 離散化モデルである剛体-ばねモデルの適用を試み, 曲げ実験結果と比較し, 解析の妥当性を検討
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したものである. 解析にあたり, (1) プレキャストPC部材接合面のばね定数の取扱い, (2) グラウトによるPC鋼棒とコンクリートの付着特性の導入等のプレキャストPC部材のモデル化を行っている.<br />An assembled structure, for instance precast concrete slab or precast rock-shed roof which is made of several precast concrete members laterally tightened by prestressing steel tendons can not be regarded as a perfectly continuous structure. The reason is that such a structure acts as if the precast members were connected through the spring corresponding to prestressing steel tendons after the maximum normal stress becomes zero at the tip of contact surface between precast members. This paper presents the experimental and analytical results on the static behavior of the above-mentioned structure, for which a beam made of two precast concrete members longitudinally tighted by the prestressing is substituted. To obtain the analytical results the rigid body spring model which is suitable for non-linear problem is applied.
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| 2.
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浜, 博和 ; 深田, 宰史 ; 阿川, 清隆 ; 岡田, 裕行 ; 梶川, 康男 ; 樅山, 好幸
概要:
The countermeasures work by reinforcing method with overlaid concrete was executed in the object bridge where the ground
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vibration problem was occurred. By these measures construction, it was confirmed that the ground vibration near the bridge decreased 3-5dB. According to the results of the dynamic response analysis under the running vehicle and the examination, the ground vibrations near the bridge were influenced by the road roughness at the object abutment. Therefore this study investigated the relation between the IRI_10 using the road roughness at the abutment and the vibration level of the ground vibration near the bridge.<br />出版者照会後に全文公開
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深田, 宰史 ; 梶川, 康男 ; 角本, 周
概要:
In order to improve the aeroelastic stability, there is a prestressed concrete stress ribbon footbridge, which was widened at the end of the span. The serviceability of the lateral vibration of the widened bridge is not clear.
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Therefore this study investigates the serviceability for the lateral vibration of the PC stress ribbon footbridges due to widening at the end of the span. This study made widened stress ribbon footbridge analytical models with various widths and span lengths using finite element method. Additionally, eigen-value analysis was carried out to grasp the vibration characteristics of those bridges. The vibration serviceability subjected to pedestrians walking on those bridges was simulated using the Hivoss guidelines method.
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浜, 博和 ; 深田, 宰史 ; 梶川, 康男 ; 松田, 哲夫 ; 宮本, 雅章
概要:
Environmental vibration caused by the ground vibration and the infrasound transmitted from the highway bridge occurred at the houses near the RC hollow slab highway bridge. Examinations were carried out to investigate the vibration
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characteristics of the bridge due to running trucks. According to the results of the examinations, it is clear that the bridge vibration generated by the deformation of the elastic shoes was transmitted to the houses near the highway bridge as ground vibration and infrasound. Therefore, the elastic shoes were removed and the abutment was changed to the rigid frame structure as a prevention measure. The validity of the prevention measure was confirmed by comparing the monitoring data before and after the prevention measure.
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梶川, 康男 ; 江上, 良三
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橘, 吉宏 ; 梶川, 康男 ; 川村, 満紀
概要:
金沢大学理工研究域環境デザイン学系<br />Kawamura, Mitsunori | 20019730
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深田, 宰史 ; 室井, 智文 ; 樅山, 好幸 ; 梶川, 康男
概要:
本研究で対象とした高速道路に架設されたPC桁橋は，大型車両の走行に伴い，車両と橋梁との連成振動が生じ，大きく振動していた．本研究では，試験車走行実験および路面計測により，その振動原因を路面凹凸の周期性であると判断した．そこで，様々な走行速度
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，重量およびばね特性を有した一般の大型車走行によって生じた車両と橋梁との連成振動により，橋梁が受ける影響として，主桁の応力度がどの程度，動的に増幅しているのか，2年間の長期モニタリングから明らかにした．さらに，その路面を補修したことにより，その応力度がどの程度低減できたのか，路面補修後の試験車走行実験と1年間の一般車走行を対象としたモニタリングにより明らかにした． Object prestressed concrete bridge with a 37.47m span vibrated greatly due to the resonation of the leaf suspension spring vibration arose from road roughness with the spatial wavelength near the expansion joint, only when the test truck ran in the 2nd slow lane. The bridge dynamic response affects the driver's riding comfort and the load-carrying capacity of the bridge. The monitoring was carried out for two years and five months in order to grasp the dynamic stress of the girders and the total weight of the trucks ordinarily running on the bridge. Moreover, the road roughness with a long spatial wavelength was repaired. After the repair, the same monitoring is continuing currently in order to compare with the data gathered about the dynamic response of the bridge before the repair. This paper describes the results of the dynamic response of the bridge resonated to the trucks' spring vibration arose from road roughness with a long spatial wavelength by monitoring before and after the repair.
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梶川, 康男
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梶川, 康男
概要:
城下町・金沢は、その中心部を、浅野川と犀川という二つの川がほとんど平行に北西方向に流れていて、最も狭い所で約二キロ。その二つの川の間の狭い小立野台地は天然の要害の地でその先端部に城が築かれた。そして、川の外部にもそれぞれ丘があり、街全体は二
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つの川と三つの丘とに跨って城下町が拡がっている。二つの川の利用や台地と用水の配置など、江戸の城下とよく似ている。このような地形はいまも変わらず、現代の都市構成に大きく影響している。本公演では､金沢の近代化遺産としての橋梁から戦後復興橋梁，そして最近の橋梁建設について，金沢の橋から何が発信できるかを考え，紹介する。<br />年月日：2005年11月日（土） 午後2時～3時30分, 場所：金沢大学サテライト・プラザ
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| 10.
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その他
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梶川, 康男
概要:
[随想]
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