Abstract
This paper exhibits a comprehensively dynamic study of coupled truss-slab system of Tin Shui Wai Indoor Recreation Center in Hong Kong (Fig.1). Recently finite element (FE) model has become an efficient and practical analysis tool widely applied in engineering projects. However uncertain parameters of FE model are required to be determined while still preserve physical meaning for better predicting the dynamic property of real structure. In order to fully determine the dynamic properties of this coupled slab system, ambient vibration test was carried out first and then analytical 3D FE (Fig.2) modeling followed by model updating based on ambient test by newly developed Fast Bayesian FFT Method was conducted for further investigation. During model updating process, Modal Assurance Criteria (MAC) was taken for the resolution of modes paring problem and in addition damping (Rayleigh damping) contribution was considered for the first time in optimization function and proved to be well reflecting the structural damping property. Besides the dynamic effects of the partition wall typically ignored were explored and demonstrated to be effectively raising the stiffness and the stability of this building. Finally the updated 3D FE model presents sufficient improvement on modal parameters of the concerned modes matching up closely with ones extracted from experiments (see Table 1).
| Original language | English |
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| Publication status | Published - 17 Mar 2012 |
| Event | 16th Annual Conference of HKSTAM 2011-2012 - , China Duration: 17 Mar 2012 → 17 Mar 2012 |
Conference
| Conference | 16th Annual Conference of HKSTAM 2011-2012 |
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| Place | China |
| Period | 17/03/12 → 17/03/12 |