Rapid evaluation of structural soundness of steel frames using a coupling coefficient (CC)-based method

使用基于耦合系数 (CC) 的方法快速评估钢框架的结构稳定性

• 批准号: 22KF0221
• 负责人: 倉田 真宏
• 金额: $ 1.34万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KF0221/
• 关键词: 地震被災; 構造ヘルスモニタリング; 残存性能; 鋼構造

A method for evaluating the post-earthquake condition of steel frame structures based on the coupling coefficient (CC) has been developed. The CC is an index that reflects each story's internal force distribution and damage mechanism in frames, computed with the drift distribution at the maximum structural response estimated from limited monitoring data and the design drawings of the target structure.Preliminary finite element analyses showed that the CC contains some important information that is not obvious in displacement responses, such as the structure's global and local working modes. Useful information is whether the damage to each story is mainly distributed on the beams or columns. An incremental dynamic analysis with an 18-story steel frame tested at the E-Defense shaking table facility confirmed that the identified structure's condition by the CC-based method corresponds to the damage information reported by visual inspection.

提出了一种基于耦合系数（CC）的钢框架结构震后状态评价方法。CC是一个反映框架中每层内力分布和损伤机制的指标，根据有限的监测数据和目标结构的设计图纸估计的最大结构响应时的漂移分布计算。初步的有限元分析表明，CC包含了一些在位移响应中不明显的重要信息，如结构的整体和局部工作模式。有用的信息是每层的损伤是主要分布在梁上还是柱上。在E-Defense振动台设施上对一个18层钢框架进行了增量动力分析，证实了基于c -based方法识别的结构状态与目视检查报告的损伤信息相对应。

项目成果

Rapid evaluation of structural soundness of steel frames using a coupling coefficient (CC)‐based method

• DOI: 10.1002/eqe.3811
• 发表时间: 2023-01
• 期刊: Earthquake Engineering & Structural Dynamics
• 影响因子: 4.5
• 作者: Shao‐Dong Shen;M. Kurata