| 夏璐,满大伟.基于模态分析的混合层间隔震体系设计策略研究[J].安徽建筑大学学报,2023,31(4):22-28 |
| 基于模态分析的混合层间隔震体系设计策略研究 |
| Research on Design Strategy of Hybrid Seismic Isolation System Based on Modal Analysis |
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| DOI： |
| 中文关键词: 层间隔震 TMD 混合控制 |
| 英文关键词: floor isolation TMD hybrid control |
| 基金项目:安徽省高校科学研究项目（2022AH040303，KJ2020A1050） |
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| 中文摘要: |
| 本文结合调谐质量阻尼器（TMD）与层间隔震技术的作用特点，即隔震层可吸收一部分外界输入能量，避免 TMD 的质量过大影响施工；TMD 可减小隔震层的位移，延长隔震装置的使用寿命，并基于振型分析结果，提出两种混合层间隔震体系设计策略。对 Benchmark 模型的 ANSYS 时程分析表明，在上部结构顶层安设 TMD（策略一）可进一步延长体系的基本周期，降低体系的一阶振型反应；在下部结构顶层安设 TMD（策略二）通过延长体系的二阶周期，使非隔震的二阶振型调谐。混合控制策略能有效改善仅层间隔震体系的单独工作性能，为提高类似建筑整体抗震性能提供一定参考。 |
| 英文摘要: |
| The characteristics of tuned mass dampers (TMDs) and seismic isolation technology are combined，i.e.，the seismicisolation layer can absorb part of the external input energy to avoid the excessive mass of TMDs affecting the construction；TMDs canreduce the displacement of the seismic isolation layer and extend the service life of the seismic isolation device.Based on the resultsof vibration type analysis，two design strategies of the hybrid isolation system are proposed. The ANSYS time history analysis of theBenchmark model shows that placing TMDs on the top of the superstructure (strategy I) can extend the period of the system and reducethe first-order mode response of the system，while on the top of the substructure (strategy II) can extend the second-order periodand make the non-seismically isolated second-order mode tuned. The hybrid control strategy can effectively improve the individualworking performance of the floor-only isolation system， and provide references for improving the overall seismic performance of similarbuildings. |
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