A comparative study on the shaking table test of a superstructure subway station structure

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (24) : 65-74.

HAN Xuechuan，TAO Lianjin，ZHANG Yu，JIA Zhibo

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Abstract

In order to study the seismic response law of subway station structure with superstructure, two kinds of subway superstructure systems were taken as research objects, and shaking table test was carried out in silty sand site field. The seismic response of subway station structure was studied from acceleration and strain, and the two test results were compared. The test data show that: (1) With the increase of input seismic intensity, the soil acceleration peak value of the monitoring points increases, but the acceleration amplification coefficient and the amplitude of acceleration magnification factor decreases. (2) Compared with the integrated subway station structure with upper cover, the acceleration peak value and amplification coefficient of the upper monitoring point close to the middle column of the subway station are relatively small, while those of the monitoring point at the bottom are relatively large. (3) The strain amplitude of each measuring point in the superstructure subway station gradually increases with the increase of input earthquake intensity. When the earthquake intensity is low, the difference of strain amplitude between the two test conditions is small. When the earthquake intensity is high, the strain increase of the integrated subway station structure with upper cover is obviously larger than that of the closely attached subway station structure with upper cover. The research results can provide reference for seismic design and analysis of superstructure subway station structure.

Key words

Upper cover subway station structure / Seismic response / Numerical analysis / Shaking table test / Free field

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HAN Xuechuan，TAO Lianjin，ZHANG Yu，JIA Zhibo. A comparative study on the shaking table test of a superstructure subway station structure[J]. Journal of Vibration and Shock, 2021, 40(24): 65-74

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