STUDY ON INTERNAL DEFECT EVALUATION METHOD OF SEISMIC REINFORCING PIER

抗震加固桥墩内部缺陷评价方法研究

• 批准号: 10650444
• 负责人: MIKAMI Shuichi
• 金额: $ 2.05万
• 依托单位: Kitami Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650444/
• 关键词: ultrasonic inspection; seismic reinforcing; delamination of the steel, resin and concrete laminated structure; vibration characteristics; crack location; delamination location; quantification defects evaluation; 鋼板接触剥離; 鋼板巻立工法; ひびわれ位置

This research is examining the internal defect of the reinforced-concrete pier by which seismic reinforcing was performed, about the following two. They are the quantitative evaluation method of the reinforcement effect at the time of performing steel-plate-lining reinforcement with internal damage of a reinforced-concrete pier, and a method of evaluating quantitatively exfoliation of the steel-plate adhesion part of a steel-plate adhesion method of construction as a reinforcement method of construction. As the quantitative evaluation method of the reinforcement effect of the reinforced-concrete pier accompanied by internal damage, this research is examining the evaluation method that directed its attention to change of the oscillation characteristic of a pier that received damage. Moreover, the evaluation method of the internal damage position by the impact testing was examined. It turns out that change of the generating position of the flexural crack of a pier is measured. Examination turned to a fundamental experiment and practical measurement about the internal defective detection methods, such as adhesion exfoliation of the part material reinforced with the steel-plate adhesion method of construction by the ultrasonic echo method, was performed. It turns out that detection of an exfoliation situation is possible for the measurement conditions at the time of setting a sensor and the interval of a steel plate to 0.9mm. The method of visualizing an internal defect on this condition could be developed, and it was able to include in the measurement system. In order to put these results to practical use, the examination by the full-scale specimen is required.

本次研究对进行抗震加固的钢筋混凝土桥墩的内部缺陷进行了研究，主要有以下两种。对钢筋混凝土桥墩的有内部损伤的钢板衬砌进行加固时的加固效果的定量评价方法以及对钢板的钢板附着部的剥离进行定量评价的方法粘结施工法作为加固施工法。作为对伴有内部损伤的钢筋混凝土桥墩加固效果进行定量评价的方法，本研究正在研究关注损伤桥墩振动特性变化的评价方法。另外，对通过冲击试验进行的内部损伤位置的评价方法进行了研究。结果表明，测量了桥墩弯曲裂纹产生位置的变化。检验转向了关于内部缺陷检测方法的基础实验和实际测量，例如通过超声波回波法对采用钢板粘合施工方法加固的部件材料进行粘合剥落。可知，将传感器和钢板的间隔设定为0.9mm时的测定条件能够检测剥离状况。可以开发在这种情况下可视化内部缺陷的方法，并且它能够包含在测量系统中。为了将这些结果付诸实际应用，需要通过全尺寸样品进行检验。

项目成果

Shuichi MIKAMI、Toshiyuki OSHIMA、Kuniaki MINAMI、Tomoyuki YAMAZAKI、etc.: "Study on Delamination Evaluation of The Steel, Resin and Concrete Laminated Structure by The Ultrasonic Wave"Journal of Structural Engineering. Vol.45A. 329-336 (1999)

Shuichi MIKAMI、Toshiyuki OSHIMA、Kuniaki MINAMI、Tomoyuki YAMAZAKI 等：“利用超声波评估钢、树脂和混凝土层合结构分层的研究”结构工程学报 Vol.45A（1999）。

岡部雄二、他: "鋼板接着剥離の評価手法に関する研究"日本非破壊検査協会平成11年度秋季大会講演概要集. 19-20 (1999)

Yuji Okabe等：“钢板附着力和剥离的评价方法的研究”日本无损检测协会1999年秋季会议讲座摘要19-20（1999）。

三上修一、他: "補強鋼板の接着剥離検出のための計測システムの検討"土木学会北海道支部論文報告集. 56(A). 182-185 (2000)

Shuichi Mikami等人：“用于检测钢筋粘合剥离的测量系统的研究”日本土木工程师学会北海道分会论文报告56（A）182-185（2000）。

Shuichi Mikami, Toshiyuki Oshima, Tomoynki Yamazaki, etc.: "Reinforcement by Steel Plate on Damaged RC Pier and its Diagnostic Evaluation using Elastic Wave"Proceedings of Hokkaido Chapter of the Japan Society of Civil Engineers. Vol.55(A). 324-327 (1999)

Shuichi Mikami、Toshiyuki Oshima、Tomoynki Yamazaki等：“受损RC桥墩钢板加固及其使用弹性波的诊断评估”日本土木工程学会北海道分会论文集。

三上 修一: "損傷RC柱の鋼板接着補強と弾性波による診断評価" 土木学会北海道支部論文報告集. 55号(A). 324-327 (1999)

Shuichi Mikami：“受损 RC 柱的钢板粘合加固和使用弹性波的诊断评估”日本土木工程师学会北海道分会论文报告第 55 (A) 号（1999 年）。