Amplification Factor for Wood-Concrete Hybrid Structures Based on Dynamic Numerical Simulation

Abstract:

Extensive concerns on environmental protection have provoked low-carbon buildings to be the mainstream of building construction worldwide, and wooden structures in this sense outperform other structural forms. Wooden-concrete hybrid structures featuring distinct wooden and concrete stories typically exhibit uneven stiffness distribution along the structure height; in particular, abrupt stiffness changes occur at the wood-concrete transition stories. Therefore, structural designing of such hybrid structures must consider a stiffness amplification effect in the static structural calculation as well as complicated procedures in the dynamic analysis. To determine an appropriate amplification factor for design purpose, this study employed a dynamic numerical approach to determine the displacement response of wooden-concrete hybrid buildings and compared the results with the displacement response obtained from static analyses. According to the results, it is found that the appropriate amplification factor should beα= f (x) = 0.47x + 1.00.αcan be valued 1.94 at 2nd floor, 2.41 at 3rd floor and 2.88 at 4th floor. The results may serve as a reference for seismic designing of wooden-concrete hybrid structures.

• Periodical: Key Engineering Materials (Volume 873)
• Pages: 65-69
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.873.65
• Online since: January 2021
• Authors: Yi Hui Huang, Meng Ting Tsai*
• Keywords: Amplification Factor, Dynamic Numerical Simulation, Load Distribution, Timber-Concrete Hybrid Structure

References

[1] M. T. Tsai and H. Le: Determination of Initial Stiffness of Timber–Steel Composite (TSC) Beams Based on Experiment and Simulation Modeling. Sustainability 2018, 10, 1220.

DOI: 10.3390/su10041220

[2] H. Le and M. T. Tsai: Experimental Assessment of the Fire Resistance Mechanisms of Timber–Steel Composites. Materials 2019, 12, 4003.

DOI: 10.3390/ma12234003

[3] H. Le and Tsai, M.: Behavior of Timber-Steel Composite with Dowel Connection under Fire. Key Engineering Materials 2019, 803, 195–199.

DOI: 10.4028/www.scientific.net/kem.803.195

[4] W. Winter, K. Tavoussi, T. Pixner, F- R. Parada: Timber-Steel-Hybrid Beams for Multi-storey Buildings. WCTE (2012).

[5] M. T. Tsai and M. Koshihara: The study and proposed application of the multi-storey hybrid timber structural system on the design flexibility and hazard prevention. WCTE (2014).