Statistical analysis of fundamental period of RC structure based on multi-source measured data

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (19) : 212-220.

WANG Zetao1, CHEN Jun1,2, SHEN Jiaxu1

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Abstract

Here, through massive literature retrieval, the measured information of 873 reinforced concrete (RC) structures in different countries and regions with a height of less than 100 m was collected to obtain a database including 1 482 fundamental period values about these structures’ section long and short axes. The cluster analysis method was used to check the representativeness and integrability of the database, and then distribution laws of fundamental period versus structure height, number of floors and height-width ratio were analyzed statistically. Referring to the existing empirical formulas of natural vibration period of RC structures at home and abroad, combined with the structural conceptual design, regression formulas for fundamental period and structural geometric parameters were deduced, and distribution differences of part subsets in the database were discussed contrastively. The results can provide a reference for engineering design and parametric modeling.

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reinforced concrete (RC) structures / fundamental period / empirical formula / cluster analysis / regression analysis / multi-source data

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WANG Zetao, CHEN Jun, SHEN Jiaxu. Statistical analysis of fundamental period of RC structure based on multi-source measured data[J]. Journal of Vibration and Shock, 2021, 40(19): 212-220

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