Detailed investigation of demaged briges due to Chi-Chi earthquake.

对集集地震受损桥梁的详细调查。

• 批准号: 14404001
• 负责人: KOSA Kenji
• 金额: $ 5.5万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14404001/
• 关键词: Chi-Chi earthauke; earthquake design; earthquake damage; bridge; displacement due to fault rapture; gider collision; 地盤被害

Several following numerical analyses were performed which were modeled dameged bridges due to Chi-Chi earthquake.1)Ji-Ji-Da Bridge suffered problematic damage which is unaccetable in terms of seismic design of this type of bridge. For example, Plastic hinges were produced not only at the pier bottom but also in the main pylon and main girder, and one diagonal cable pulled out from the anchorage section. The damage mechanism of this bridge was analyzed using a frame model, with the incorporation of field measurement results and detailed drawings obtained from bridge administrators in Taiwan. It was found that the cause of cable pullout was the unsufficient anchoring strength.2)Seismic damage analysis was conducted on the Chang-Geng Bridge damaged in the 1999 Chi-Chi Earthquake in Taiwan. This bridge sustained peculiar damage that two girders fell to the ground even though the girder did not show any fault displacement. The cause of the fall was assumed to be the horizontal displacement of the girders when they collided under seismic loading. Through nonlinear dynamic analysis using field measurement results and detailed drawing obtained from the administrator of the bridge, it was confirmed that the girders were pushed toward the parapet and collied from the back under seismic loading, resulting in the fall from the piers.

进行了几次数值分析，这些分析是由于Chi-Chi地震而建模的。1）JI-JI-DA桥遭受了有问题的损害，这是这种类型的桥梁的地震设计而无法取得的。例如，塑料铰链不仅在码头的底部，而且在主塔和主梁上生产，并且从锚固部分拉出了一根对角线。使用框架模型分析了该桥的损坏机制，并结合了田间测量结果和详细图纸，从台湾的桥管理员那里获得。发现电缆的原因是锚定强度不足。2）地震损伤分析是在1999年台湾Chi-chi地震损坏的昌甘桥上进行的。这座桥受到了奇特的破坏，即使梁没有显示出任何断层位移，两个大梁落在了地面上。跌落的原因被认为是梁在地震载荷下碰撞时的水平位移。通过使用现场测量结果和从桥的管理员获得的详细图形的非线性动态分析，可以证实，梁被推向栏杆，并在地震载荷下从背部汇总，从而导致码头跌落。

项目成果

台湾大地震によるRC橋脚被害調査

台湾大地震RC桥墩受损调查

• 发表时间: 2002
• 期刊: 構造工学論文集 Vol.51A
• 作者: 田崎賢治;幸左賢二;阿部弘典;新井伸博
• 通讯作者: 新井伸博

台湾集集地震における玉突き衝突の被害分析

台湾集集地震球碰撞损伤分析

• 发表时间: 2002
• 期刊: コンクリート工学年次論文報告集 Vol.24
• 作者: 手嶋康博;幸左賢二;田崎賢治;鈴木直人
• 通讯作者: 鈴木直人

幸左賢二, 田崎賢治: "台湾集集地震で被災した石圍端の損傷要因分析"コンクリート工学論文集. Vol.22. (2003)

Kenji Koza，Kenji Tasaki：“台湾集集地震损坏的石墙边缘的损坏因素分析”混凝土工程杂志第 22 卷（2003 年）。

台湾集集地震で被災したPC斜張橋(集鹿大橋)の詳細分析

台湾赤几地震受损PC斜拉桥（赤鹿桥）详细分析

• 发表时间: 2004
• 期刊: 構造工学論文集 Vol.50A
• 作者: 田崎賢治;幸左賢二;池田隆明;小郷政弘
• 通讯作者: 小郷政弘

田崎賢治, 幸左賢二: "台湾集集地震における長庚端の桁衝突解析"構造工学論文集. Vol.49A. 573-580 (2003)

Kenji Tasaki、Kenji Koza：“台湾 Chi-Chi 地震期间长庚端的梁碰撞分析”《结构工程杂志》第 49A 卷（2003 年）。