Study on Collapse Limit of Reinforced Concrete Buildings

钢筋混凝土建筑物倒塌极限研究

• 批准号: 15560489
• 负责人: TASAI Akira
• 金额: $ 2.05万
• 依托单位: Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560489/
• 关键词: Reinforced Concrete; Column; Residual Axial Capacity; Ductility Index; Extremely Brittle Column; Shear; Flexure; Shear Reinforcement Ratio; 軸力支持能力; 部材角; データベース; 繰り返し履歴; 破壊形式; 帯筋量

Residual axial load capacity, recommended in the Standard for Seismic Evaluation of Existing Reinforced Concrete Buildings published in 2001,was verified by experiment. Column specimens with relatively low strength were tested. The specimens were designed to fail in three typical failure modes, that is, extremely brittle shear failure, shear failure and flexural failure. The failure modes were controlled by only changing the column height, under constant axial load ratio, constant shear reinforcement ratio p_w, and constant main rebar. After the lateral load reversals, the residual axial capacity was investigated by loading in the axial direction.In the extremely brittle failure columns, the residual axial load capacity exceeded that recommended in the standard in the range of 0.2≦p_w≦O.4. In the shear failure columns, in the range of 0.2≦p_w≦0.4,test results of residual axial load capacity exceeded that recommended in the standard at 1.27 and 2.32 of ductility index. In the flexural failure columns, in the range of 0.2≦p_w≦0.4, test results of residual axial load capacity exceeded significantly that recommended in the standard at 2.0 of ductility index. However, at 3.0 of ductility index, the test result was almost equal to the recommended value. The residual axial load capacity, recommended in the Standard for Seismic Evaluation of Existing Reinforced Concrete Buildings, was verified to be approximately appropriate assumption even in the range of low strength concrete, independent of failure modes.

标准中的残留轴向负载用于实验对现有ED的地震评估。 P_W和横向负载逆转后的恒定钢筋，通过在0.2≦p_w o.4的标准范围内的极端脆性故障柱中加载残留的轴向能力。范围为0.2≦p_w≦0.4，剩余的测试结果超过了标准为1.27和2.32和flexur allafe柱，在0.2≦p_w≦0.4的范围内，残留轴向负载能力的测试结果超过了已预先推荐的，该结果已超过建议。但是，在灰尘索引的2.0处，在灰尘指数的3.0处，剩余的轴向负载能力，在标准中建议对现有的加固混凝土建筑物进行地震评估低强度混凝土，独立于故障模式。

项目成果

耐震診断基準における残存軸耐力の検証

地震诊断标准中剩余轴向强度的验证

• 发表时间: 2005
• 期刊: 日本建築学会大会学術講演梗概集構造系 構造IV C2(印刷中)
• 作者: 榎本将弘;山崎和宏;田才晃 他
• 通讯作者: 田才晃 他

岩本純一, Hassane OUSALEM, 田才 晃, 壁谷澤寿海: "柱の軸力保持限界に関する影響因子の検討"コンクリート工学年次論文集. 第25巻・2号. 349-354 (2003)

Junichi Iwamoto、Hassane OUSALEM、Akira Tasai、Hisami Kabeyazawa：“柱轴向力保留极限的影响因素研究”，《混凝土工程年报》，第 25 卷，第 2 期，349-354 (2003)。

柱の軸力保持限界に関する影響因子の検討

柱轴向力保持极限影响因素探讨

• 发表时间: 2003
• 期刊: コンクリート工学年次論文集 第25巻・2号
• 作者: 岩本純一;田才 晃 他
• 通讯作者: 田才 晃 他

Verification by Experiment for the Residual Axial Load Capacity in the Standard for Seismic Evaluation of Existing RC Buildings

既有钢筋混凝土建筑抗震评价标准中残余轴向承载力的试验验证

• 发表时间: 2003
• 期刊: Summaries of Technical Papers of Annual Meeting of AIJ (under printing)
• 作者: Masahiro Enomoto;Akira Tasai et al.
• 通讯作者: Akira Tasai et al.