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http://dx.doi.org/10.15683/kosdi.2022.12.31.930

Evaluation of Serviceability and Flexural Performance for RC Hollow Slab by Hollow Ratio and Damping Ratio  

Jong Hoon Kim (Construction Engineering Research Institute / Department of Civil ＆ Environment Engineering, Hankyong National University)
Dong Baek Kim (Daewon Construction Technology Research Institute)
Yong Gon Kim (Construction Engineering Research Institute / Department of Social ＆ Safety Engineering, Hankyong National University)
Jae Won Lee (Construction Engineering Research Institute / Department of Civil ＆ Environment Engineering, Hankyong National University)
Jeong Ho Choi (Construction Engineering Research Institute / Department of Civil ＆ Environment Engineering, Hankyong National University)
Publication Information
Journal of the Society of Disaster Information / v.18, no.4, 2022 , pp. 930-935 More about this Journal
Abstract
Purpose: The purpose of this study is to evaluate the stiffness reduction and damping ratio of reinforced concrete hollow slabs and to analyze their performance, and to study the effect of the damping effect of hollow bodies and the stiffness reduction on the serviceability of slabs. Method: Test specimen was made in a size of 0.6m*0.21m*3.6m to evaluate the vibration effect of the slab, and the hollow ratio was set in six steps from 0.0% to 30% to measure the change in rigidity and damping according to the change in the hollow ratio. Result: As the hollow ratio increases, rigidity decreases and the natural frequency decreases, but as the mass decreases, the natural frequency increases gradually. Since energy is hardly dissipated up to the hollow ratio of 20%, the hollow ratio should be reduced by 30%. Conclusion: It was found that the bending strength degradation of the slab with a hollow ratio of about 30% is minimized, but an appropriate natural frequency can be maintained, and a certain damping effect can be obtained.
Keywords
Hollow Ratio; Damping Ratio; Serviceability; Natural Frequency; Damping Effect;
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  • Reference
1 Choi, H.M., Park, T.W., Paik, I.K., Kim, J.S., Han, J.Y. (2015). "Shear performance of board-type two-way voided slab." Journal of the Korea Concrete Institute, Vol. 27, No. 6, pp. 651-659.   DOI
2 Han, S.H., Lee, M.K. (2004). "Evaluation of vertical vibration performance of apartment floor." Journal of the Korea Concrete Institute, Vol. 16, No. 2, pp. 221-228.
3 Hur, M.W., Yoon, J.H., Hwang, K.S., Youn, S.H., Park, T.W. (2017). "Evaluation of local Bearing strength of hollow core slab." KCI, Spring 2017 Convention, pp. 101-102.
4 Kang, J.Y., Kim, H.G., Joo, E.H., Kim, S.M., Kim, H.S., Shin, Y.S. (2011). "Experimental Studies on the effect of construction methods on shear strength of hollow core slab." Proceedings of the Korea Concrete Institute, Vol. 23, No. 1, pp. 15-16.