长周期地震作用下减震结构动力响应与强度指标相关性研究

皮鹏程; 汪振琴

doi:10.11899/zzfy20240253

长周期地震作用下减震结构动力响应与强度指标相关性研究

doi: 10.11899/zzfy20240253

皮鹏程^1,,
汪振琴^2, ,

1.
中国市政工程中南设计研究总院有限公司, 武汉 430010
2.
湖北苏桓建设工程有限公司, 武汉 430050

详细信息

作者简介:
皮鹏程，男，生于1986年。高级工程师，一级注册结构工程师。主要从事结构设计工作。E-mail：244522797@qq.com

通讯作者:
汪振琴，女，生于1985年。高级工程师，一级注册造价工程师、一级注册建造师。主要从事工程全生命周期咨询及成本管控工作。E-mail：zhenqinwang85@163.com

12 https://www.usgs.gov/programs/earthquake-hazards
中图分类号: P315.9；TU352.1
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出版历程
- 收稿日期: 2024-12-11
- 录用日期: 2025-02-14
- 修回日期: 2025-02-09
- 网络出版日期: 2026-04-07

Study on the Correlation between Dynamic Responses and Intensity Measures of Seismic Reduction Structures under Long Period Ground Motion Action

Pi Pengcheng^1
,,
Wang ZhenQin^{2
, ,}

1.
Central and Southern China Municipal Engineering Design & Research Institute Co., Ltd., Wuhan 430010, China
2.
Hubei Suhuan Construction Engineering Co., Ltd., Wuhan 430050, China

摘要

摘要: 地震动的频率成分对结构地震响应有显著的影响。为探究地震动频率成分对结构地震动力响应及TMD减震性能的影响，本文首先基于“3·11”东日本大地震的454条强震动记录，经过基线校正和滤波处理，计算了以长周期界定参数β_l、地震动平均周期（T_m）、平滑谱卓越周期（T_o）、平均谱周期（T_avg），并以其目标强度指标。其次，建立了20层刚框架模型，并分析了长周期界定参数β_l以及频谱类强度指标之间的相关性，最后，探究了TMD减震效果与频谱类强度指标之间的相关性。结果表明，频率成分对结构位移响应存在显著影响，相比于T_o和β_l，减震效果与表征地震动低频成分的T_m以及T_avg呈现强相关，相关系数均大于0.8，且在中长周期地震动作用下，TMD具有更好的减震效果。相关结论可为结构减震机理以及地震动频率成分对结构动力响应的影响等相关研究提供参考。
- 长周期地震动 /
- 多层框架 /
- 结构动力响应 /
- TMD减震 /
- 相关性分析
Abstract: The frequency components of ground motion have a significant impact on structural seismic responses. T_o investigate the influence of ground motion frequency components on structural seismic dynamic responses and TMD damping performance, this study first utilized 454 strong ground motion records from the “3.11” Great East Japan Earthquake, performing baseline correction and filtering to calculate parameter for long-period determination β_l, mean period (T_m), smoothed spectrum predominant period (T_o), and average spectrum period (T_avg) as target intensity measures. Secondly, a 20-story rigid frame model was constructed to analyze the correlation between the β_l and frequency-content intensity measures. Finally, the correlation between TMD damping performance and spectral intensity measures was explored. The results show that frequency components significantly affect structural displacement responses. Compared to T_oand β_l, damping performance shows a stronger correlation with T_m and T_avg, which characterize the low-frequency components of ground motion, with correlation coefficients exceeding 0.8. Moreover, TMD exhibits better damping performance under medium- to long-period ground motions. These findings can provide valuable insights for studies on structural damping mechanisms and the effects of ground motion frequency components on structural dynamic responses.
- Long period ground motion /
- Multi-layer frame /
- Structural dynamic response /
- Tuned mass damper /
- Correlation analysis
注释:

1) 12 https://www.usgs.gov/programs/earthquake-hazards

HTML全文

图 1 β_l与震中距的分布

Figure 1. Distribution of β_land epicentral distance

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图 2 频谱参数之间的相关性

Figure 2. Correlation between spectral parameters

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图 3 结构平面布置图（单位：mm）

Figure 3. Plane layout of the structure

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图 4 结构前五阶振型图

Figure 4. The first five modes of the structure

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图 5 位移均方根RMS与长周期界定参数β_l的散点及线性拟合

Figure 5. Scatter and linear fitting of the RMSand β_l

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图 6 位移均方根RMS与频谱类强度指标的散点及线性拟合

Figure 6. Scatter and linear fitting of the RMS and the spectral intensity parameters

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图 7 单自由度结构-TMD体系原理图

Figure 7. Schematic diagram of the SDOF-TMD system

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图 8 单自由度结构-TMD体系能量累积时程图

Figure 8. Energy accumulation time history of the SDOF-TMD system

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图 9 E_TMD与β_l的散点及线性拟合

Figure 9. Scatter and linear fitting of the E_TMDand β_l

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Figure 10. Scatter and linear fitting of the E_TMDand the spectral intensity parameters

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