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| Wind-induced vibration control of super high-rise building TTMDI system based on topological layout |
| LU Chang, LI Chunxiang, CAO Liyuan |
| School of Mechanism and Engineering Science, Shanghai University, Shanghai 200444, China |
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Abstract In order to solve the problem of large amplitude vibration of super tall building susceptible to vortex shedding under the strong wind, the tuned tandem mass dampers-inerters (TTMDI) was proposed for cross wind-induced vibration control of super tall building. In the frequency domain, the peak responses of the structure furnished with the TTMDI were formulated, and the criterion for the optimum searching was then defined. Parameter optimization of the TTMDI was conducted by resorting to pattern search algorithm. Taking a super-tall building as a numerical example, considering TTMDI with different inertial properties configured in different topologies, the performance evaluation on the TTMDI included its control effectiveness, stiffness and damping coefficient, strokes, inerter forces and robustness. For purposes of further comparison, the optimum results of the tuned mass damper (TMD), tuned tandem mass dampers(TTMD) and the tandem mass damper-inerter(TMDI) were also included into consideration. Numerical results demonstrate that TTMDI system has superior control effectiveness and robustness. Furthermore, when topology or inertia ratio increase to a certain extent, the TTMDI only needs a linking damping. Likewise, the total damping requirement of TTMDI system is less than half that of TMDI system, thus being easier to implement.
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Received: 18 December 2020
Published: 15 May 2022
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