调谐液柱阻尼器-结构系统风致振动响应的CFD/CSD耦合分析方法

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (11) : 236-245.

论文

黄鹏，吴玖荣，傅继阳，孙连杨，王加雷

作者信息 +

CFD/CSD coupled analysis method for wind-induced vibration responses of TLCD-structure system

HUANG Peng, WU Jiurong, FU Jiyang, SUN Lianyang, WANG Jialei

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文章历史 +

摘要

针对调谐液柱阻尼器（TLCD）难以建立其精确的非线性理论分析模型，且其力学性能试验成本高和耗时长等问题，本文首先采用CFD（计算流体动力学）数值模拟方法，对TLCD系统的力学性能和动力特征进行仿真模拟，在此基础上进一步提出了基于计算流体动力学/计算结构动力学（CFD/CSD）耦合分析方法，求解带TLCD系统的高层建筑结构的风致动力响应。通过开展某一TLCD系统在特定底部激励下的力学性能和动力特性试验，得到其内液体晃荡的自由液面波高和晃动力时程，验证了本文CFD数值模拟方法可以准确地分析TLCD水箱内液体的非线性晃动特征。随后对风工程领域广泛采用的76层建筑结构振动控制Benchmark模型，假设其顶部设置TLCD系统时主体结构在三种风速重现期（10、50和100年）风速对应的横风向动力风荷载激励下的风致控制效率，采用本文提出的CFD/CSD耦合分析方法，进行了数值仿真模拟分析。耦合分析结果表明，TLCD系统对Benchmark模型的风致加速度、速度和位移响应均有一定的控制效果，对加速度响应的控制效果要优于对位移响应的控制效果。本文研究方法可为复杂TLCD系统对高层建筑的风振控制分析提供有效的参考。

Abstract

In view of the challenges in establishing an accurate nonlinear theoretical analysis model for the Tuned Liquid Column Damper (TLCD), as well as the high cost and time-consuming of its mechanical performance testing, the Computational Fluid Dynamics (CFD) method is utilized to analyze the mechanical properties and dynamic characteristics of the TLCD system. Furtherly, a coupled analysis method based on Computational Fluid Dynamics/Computational Structural Dynamics (CFD/CSD) is proposed to analyze the wind-induced dynamic response of high-rise structures equipped with TLCD systems. Through conducting the mechanical performance and dynamic characteristic tests on a typical TLCD system under a specific bottom excitation, the wave height of free liquid surface and sloshing force are obtained, which verifies the accurate analysis capability of the CFD numerical method regarding the nonlinear characteristics of sloshing liquids within the TLCD water tank. Subsequently, the widely adopted 76-story benchmark model for vibration control study in wind engineering is selected, with the TLCD system installed at the top of the main structure. Utilizing the proposed CFD/CSD coupled analysis method, numerical simulations are carried out to assess the wind vibration control efficiency under the dynamic across wind loads corresponding to design wind speed with three different return periods (10, 50, and 100 years). The results of the coupled analysis show that the TLCD system could produce a certain control effect on the wind-induced acceleration, velocity, and displacement responses of the benchmark model, with a more pronounced control effect on the acceleration response than the displacement response. The presented method offers an effective reference for the wind vibration control analysis of high-rise buildings with complex TLCD systems.

导出引用

黄鹏，吴玖荣，傅继阳，孙连杨，王加雷. 调谐液柱阻尼器-结构系统风致振动响应的CFD/CSD耦合分析方法[J]. 振动与冲击, 2024, 43(11): 236-245

HUANG Peng, WU Jiurong, FU Jiyang, SUN Lianyang, WANG Jialei. CFD/CSD coupled analysis method for wind-induced vibration responses of TLCD-structure system[J]. Journal of Vibration and Shock, 2024, 43(11): 236-245

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