Abstract
The particle-tuned liquid damper (PTLD) can combine the functions of baffles and energy-dissipating materials, such as highly viscous liquids, by integrating the particle dampers into a conventional tuned liquid damper (TLD). However, the particles distributed only at the bottom of the container cannot drive the motion of water in the middle layer to function effectively. Therefore, a suspended particle-tuned liquid damper (SPTLD) is proposed in this study and its effectiveness and reliability are examined compared with the conventional TLD through shaking table tests. Based on the experimental results, a parametric analysis of the SPTLD is further conducted to investigate the damping mechanism of the SPTLD, including the number of particles, the excitations with various amplitudes, and the use of suspended versus floating particles in liquid. The test results revealed that SPTLD successfully controlled the structural acceleration responses under seismic excitations with good reliability; the peak acceleration response was reduced by 67.4% and the RMS value was reduced by 75.9%. In the SPTLD, the particles filled in the container can drive more liquid to effectively participate in the sloshing motion, and the superimposed damping effects involving collisions and the energy-dissipation mechanisms of buoyancy and hydraulic resistance in the SPTLD lead to an improvement in the vibration control performance. Furthermore, the comparison of SPTLD and the floating particle-tuned liquid damper (FPTLD) demonstrates the better availability of SPTLD in practical applications, especially for some slender structures with limited plane space on the top floor.
Funder
National Natural Science Foundation of China
Program of Shanghai Academic Research Leader
Top Discipline Plan of Shanghai Universities-Class I
Subject
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献