Study on Seismic Evaluation and Seismic Retrofit for Exposed Column Bases used in Gymnasiums

体育馆裸露柱基抗震评价及抗震改造研究

• 批准号: 12650575
• 负责人: TANAKA Tsuyoshi
• 金额: $ 2.24万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650575/
• 关键词: Seismic Retrofit; Existing Gymnasium; Steel Frame with Brace; Exposed Base Column; Post-Installed Anchor Bolt; Fracture of Anchor Bolt; Corn Failure; Effect of Retrofit; ブレース付き骨組; 鉄骨造体育館; 耐震診断; 柱脚; 構造実験; 後施工アンカー; 骨組数値解析; 極限解析

This report presents the results of experimental study on seismic retrofit for exposed column bases by post-installed anchors. Elasto-plastic behavior of exposed column bases and the effect of seismic retrofit are discussed. The test parameter is the number of the post-installed anchors. The test specimen is composed of the steel frame with the braces and the concrete footing beam. Three specimens are tested under horizontal load. The following conclusions can be made :1. The all specimens failed due to fracture in the threaded portion of the previous anchor bolts2. Cracks on the concrete footing beam were observed for the specimens with post-installed anchors. The cracks were caused by the corn failure of the post-installed anchors.3. For the post-installed anchors, the remarkable flexural deformation was observed. This flexural deformation deprived the bond stress between the post-installed anchors and the concrete beam.4. The evaluation for the tensile strength of column bases is available for the all specimens.5. The evaluation for the shear strength of column bases overestimates the test results.

本报告介绍了通过后装锚杆对裸露柱基进行抗震改造的实验研究结果。讨论了裸露柱基的弹塑性行为和抗震改造的效果。测试参数为后装锚固件的数量。试件由带有支撑的钢框架和混凝土基础梁组成。三个样本在水平载荷下进行测试。可以得出以下结论： 1．所有样本均因先前锚定螺栓2的螺纹部分断裂而失效。对于带有后安装锚的样本，观察到混凝土基础梁上的裂缝。裂缝的原因是后安装锚杆的破坏造成的。 3．对于后安装的锚，观察到显着的弯曲变形。这种弯曲变形消除了后装锚杆与混凝土梁之间的粘结应力。4．所有试件均可进行柱底座抗拉强度的评定。 5．对柱基础抗剪强度的评估高估了试验结果。

项目成果

RISA HATANAKA: "Study on Seismic Retrofit for Exposed Column Bases of Steel Frames with Braces - Part 1. Outline of Test"Summaries of Technical Papers of Annual Meeting AIJ - Structures III. 801-802 (2002)

RISA HATANAKA：“带有支撑的钢框架外露柱基的抗震改造研究 - 第 1 部分。试验大纲”年会 AIJ - Structures 技术论文摘要 III。

畑中 理沙: "ブレース付き鉄骨造骨組における露出柱脚の耐震補強に関する研究"日本建築学会近畿支部研究報告集. 第42号. 221-224 (2002)

Risa Hatanaka：“支撑钢框架中裸露柱基的抗震加固研究”日本建筑学会近畿分会研究报告第42. 221-224号（2002年）。

G.Y.Jin: "Behaviour of Exposed Type of Column Bases Subjected to Tensile Force"Proceedings of the 6^ Pacific Structural Steel Conference. 407-412 (2001)

G.Y.Jin：“受拉力作用下外露型柱基的行为”第六届太平洋结构钢会议论文集。

田中 剛: "あと施工アンカーを用いた露出柱脚の耐震補強に関する実験的研究"鋼構造年次論文報告集. 第10巻. 513-518 (2002)

Tsuyoshi Tanaka：“使用后装锚杆对裸露柱基座进行抗震加固的实验研究”钢结构年报第 10 卷，513-518（2002）。

RISA HATANAKA: "Study on Seismic Retrofit for Exposed Column Bases of Steel Frames with Braces"Structural Report of Kinki Branch of the AIJ. No.42. 221-224 (2002)

RISA HATANAKA：“带有支撑的钢框架裸露柱基的抗震改造研究”AIJ 近畿分会的结构报告。