Evaluation of Shear Strength Degradation after Flexural Yielding of RC Member

钢筋混凝土构件弯曲屈服后抗剪强度退化评价

• 批准号: 24656278
• 负责人: NAKAMURA HIKARU
• 金额: $ 2.58万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24656278/
• 关键词: せん断破壊; 繰返し荷重; 曲げ降伏; 変形性能; 耐震性能; せん断耐力劣化曲線

The degradation process of shear strength after flexural yielding of RC member subjected to cyclic loading was evaluated numerically and experimentally.Regarding numerical method, 3D Rigid Body Spring Model (3D RBSM) was used. Firstly, shear failure after flexural yielding of RC beam subjected to cyclic loading was simulated and applicability of 3D RBSM was confirmed. Then, a method which can evaluate the degradation process of shear strength after flexural yielding was proposed. It was shown that the strength degradation curve obtained by analysis shows similar behavior with the equation obtained by statistical procedure. Moreover, the effects of web reinforcement ratio, axial force and tensile reinforcement ratio on shear degradation curve were evaluated. On the other hand, a method to evaluate shear strength degradation experimentally was proposed and the effectiveness of the proposed method was confirmed.

使用数值和实验评估了经受循环载荷的RC成员的弯曲屈服后的剪切强度的降解过程。使用数值方法，使用了3D刚体体弹簧模型（3D RBSM）。首先，模拟了经受循环载荷的RC梁的弯曲屈服后的剪切失效，并确认了3D RBSM的适用性。然后，提出了一种可以评估弯曲屈服后剪切强度降解过程的方法。结果表明，通过分析获得的强度降解曲线显示出与通过统计程序获得的方程式相似的行为。此外，评估了Web增强率，轴向力和拉伸强化比对剪切降解曲线的影响。另一方面，提出了一种评估剪切强度降解的方法，并确认了该方法的有效性。

项目成果

Numerical Study on Shear Strength Degradation After Flexural Yielding of RC Member Subjected to Cyclic Loading

循环荷载作用下钢筋混凝土构件弯曲屈服后抗剪强度退化的数值研究

• 发表时间: 2013
• 作者: H.Furuhashi;H. Nakamura ;Y. Yamamoto
• 通讯作者: Y. Yamamoto

Crack propagation analysis of reinforced concrete wall under cyclic loading using RBSM

• DOI: 10.1080/19648189.2014.881755
• 发表时间: 2014-06
• 期刊: European Journal of Environmental and Civil Engineering
• 影响因子: 2.1
• 作者: Yoshihito Yamamoto;Hikaru Nakamura;I. Kuroda;N. Furuya

繰返し荷重を受けるRC部材におけるせん断耐力低下挙動の数値解析的評価

循环荷载作用下钢筋混凝土构件抗剪强度降低行为的数值分析评价

• 发表时间: 2012
• 作者: H.Furuhashi;H. Nakamura ;Y. Yamamoto;H. FURUHASHI;山本佳士;古橋宏紀,中村光,国枝稔,上田尚史
• 通讯作者: 古橋宏紀,中村光,国枝稔,上田尚史

材料形態学講座

材料形态学课程

Simulation of Crack Propagation in RC Shear Wall Using a 3D Rigid-Body-Spring Model with Random Geometry

使用具有随机几何形状的 3D 刚体弹簧模型模拟 RC 剪力墙中的裂纹扩展

• 发表时间: 2013
• 作者: H.Furuhashi;H. Nakamura ;Y. Yamamoto;H. FURUHASHI;山本佳士
• 通讯作者: 山本佳士