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Author:

Chen, J. (Chen, J..) | Xu, C. (Xu, C..) | Du, X. (Du, X..) | El, Naggar, H.M. (El, Naggar, H.M..) | Han, R. (Han, R..)

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EI Scopus SCIE

Abstract:

This paper presents the design and commissioning of a novel pseudo-static test apparatus for underground structures that accounts for soil-structure interaction by simulating the soil with suitably designed springs. The developed apparatus was employed to conduct 1:10 large scale tests on a two-story three-span prefabricated subway station structure. Two comparative cyclic load tests were conducted: one involved the developed springs-structure system; and one involved the structure alone (no springs). The test results demonstrated important differences in the damage location, damage degree, bearing capacity, and deformation capacity of the prefabricated subway station structure under the two loading conditions (i.e., with and without springs). The presence of springs (i.e., soil-structure interaction) enhanced the lateral collapse resistance of the underground structure and affected the inter-story displacement ratio (IDR) between the upper and lower layers of the two-story prefabricated subway station structure. However, it did not affect the deformation coordination of the walls and columns of each layer. A finite element model of the prototype station was also established to conduct dynamic time history analysis simulating the soil-structure interaction. The results from the dynamic analysis validated the effectiveness of the pseudo-static test method employing the spring-structure system. The excellent agreement between the calculated dynamic responses and the responses obtained from the pseudo static tests confirmed the ability of the developed apparatus to conduct seismic tests on complex large-scale underground structures such as prefabricated subway stations. Thus, this test methodology might be utilized to attain valuable insights into the seismic performance of prefabricated subway stations at a relatively low cost and effort. © 2024 John Wiley & Sons Ltd.

Keyword:

seismic damage prefabricated subway station underground structure spring-structure system numerical analysis pseudo-static test

Author Community:

  • [ 1 ] [Chen J.]Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 2 ] [Chen J.]Department of Civil and Environmental Engineering, Western University, London, ON, Canada
  • [ 3 ] [Xu C.]Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 4 ] [Du X.]Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 5 ] [El Naggar H.M.]Department of Civil and Environmental Engineering, Western University, London, ON, Canada
  • [ 6 ] [Han R.]College of Resources, Environment and Architectural Engineering, Chifeng University, Inner Mongolia, Chifeng, China

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Source :

Earthquake Engineering and Structural Dynamics

ISSN: 0098-8847

Year: 2024

Issue: 4

Volume: 53

Page: 1573-1592

4 . 5 0 0

JCR@2022

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

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