Comparison of Seismic Experiments on Traditional Chinese Wood Structures and Light Wood-Framed Structures
Publication: Journal of Structural Engineering
Volume 139, Issue 11
Abstract
Shaking table tests of two 1:2 scale prototype structures were performed to study the seismic performance of Chinese traditional wood structures and light wood-framed structures. The results show that the natural frequency (2.18 Hz) of the Chinese traditional wood structure (CTWS) in the lateral direction is less than that of the light wood-framed structure (LWFS), equal to 5.34 Hz, which indicates that the lateral stiffness of the CTWS is less than that of the LWFS. When the peak value of acceleration input (PAI) is less than 0.5g, the lateral acceleration response at the roof of CTWS will be less than input; the dynamic magnification factor of acceleration ranged from 0.46 to 0.57. Furthermore, for a PAI greater than 0.2g, the obvious slippage between the columns and base stones, as well as the deformation of joints connecting beams with columns, is evident in CTWS. This behavior allows for dissipation of earthquake energy. However, for LWTS, when the PAI is greater than 0.4g, the dynamic magnification factor of acceleration will be more than 1.0, meaning that the effect of diminishing acceleration response of CTWS is better than that of LWTS. If the PAI is less than 0.5g, the LWFS retains elastic, meaning that the seismic performance of the LWFS is superior to that of the CTWS with the same plan. In summary, the models and prototype structures can provide life safe performance when the design earthquake ground motion is equal to 0.20g and meet collapse prevention performance when the maximum considered earthquake ground motion is equal to 0.40g.
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Published In
Journal of Structural Engineering
Volume 139 • Issue 11 • November 2013
Pages: 2038 - 2043
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jan 9, 2012
Accepted: Oct 26, 2012
Published online: Oct 29, 2012
Published in print: Nov 1, 2013
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