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http://dx.doi.org/10.11112/jksmi.2021.25.5.60

Study on the Equation of Natural Period of Middle and Low Rise Building of Upper-Walled Lower Frame Type  

Yoo, Suk-Hyeong (Department of Architectural Engineering, Gyeongsang National University)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.25, no.5, 2021 , pp. 60-67 More about this Journal
Abstract
According to the 「Guidelines of Structural Design for Piloti Building」 of the Ministry of Land, Infrastructure and Transport (2018), the natural period of middle and low rise building of upper-walled lower frame type, such as the domestic multiplex house in piloti style, is suggested for safety to apply the existing code formula of the wall structure. However, the current code formula of the wall structure was provided based on actual measurement of high-rise wall-type structures that mainly exhibit bending behavior. So it is considered that it is not suitable for a piloti-type house with four stories or less, where the wall behaves in shear. See also Park et al. (2000) confirmed that the effect of the lower frame part is greater than that of the upper wall part in the natural period of complex structures with 10 or more floors through analytical studies. Therefore, in this study, in order to examine the effect of the lower frame on the natural period of the middle and low-rise piloti structure, the estimation of natural period by the finite element analysis, approximation formula and ccurrent code formula was performed for the target structures with the shear and flexural stiffness of the upper wall and the shear stiffness of the lower frame as variables. As result, it was found that the change in the shear stiffness of the lower frame had a greater effect on the natural period of the whole building than the change in the bending or shear stiffness of the upper wall.
Keywords
Upper-walled lower frame structure; Natural period formula; Shear stiffness of frame; Eigenvalue analysis; Finite element method;
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1 Chun, Y. S., Yoo, S. H., and Lee, L. H. (1998), Experimental Formula to Determine the Natural Period of Wall-slab Apartment Building Structures, Journal of the Architectural Institute of Korea, 14(4), 281-290.
2 Kim, H., Yoo, S. H., and Shin, S. W. (2007), A Simplified Method for Calculation of the Natural Frequencies Using the Stiffness Contribution Degree, Journal of the Architectural Institute of Korea, 23(7), 3-10.
3 Park, K. S., Kim, H. C., and Kim, J. H. (2000), Natural Period Estimation for the Buildings of Upper Wall and Lower Frame Type, Journal of the Earthquake Engineering Society of Korea, 4(4), 1-14.
4 Basu, A. K., Ashok, K. N., and Ashwani K. N. (1982), Dynamic Characteristics of Frame-Wall Systems, ASCE, ST6, 1201-1218.
5 Oh, S. H., Kim, J. C., and Shin, S. H. (2019), Damage Investigation of Pilotis Structures and Analysis of Damage Causes by Pohang Earthquake, Journal of the Architectural Institute of Korea, 35(3), 3-10.
6 Chun, Y. S., Cho, S. H., Kim, D. Y., and Lee, L. H. (1995), Approximate Estimate of Natural Periods for Residential Buildings having Wall-Slab Configurations, Journal of the Architectural Institute of Korea, 11(8), 211-219.
7 Moon, E. C., Baek, E. R., and Lee, S. H. (2018), Influence of Inter-story Strength and Stiffness Ratios on the Seismic Performance of RC Pilotis Type Building, Journal of the Korea Concrete Institute, 30(6), 633-640.   DOI
8 Chun, Y. S., and Lee, L. H. (1998), Fundamental Periods of Vibrations in Apartment Building Structures, Journal of the Architectural Institute of Korea, 14(3), 309-317.
9 Zalka, K. A. (2001), A Simplified Method for Calculation of the Natural Frequencies of Wall-frame Buildings, Engineering Structures, 23(12), 1544-1555.   DOI
10 Stafford, S. B., and Elizabeth, C. (1986), Estimating Periods of Vibration of Tall Buildings, Journal of Structural Engineering, 112(5), 1005-1019.   DOI
11 Korean Building Code, Ministry of Land, Infrastructure and Transport, (2016).
12 Guidelines of Structural Design for Piloti Building, Ministry of Land, Infrastructure and Transport, (2018).