Computers and Concrete

  • 제27권2호
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  • Pages.163-173
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  • 2021
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Research on the anti-seismic performance of composite precast utility tunnels based on the shaking table test and simulation analysis

  • Yang, Yanmin (School of Civil Engineering, Jilin Jianzhu University) ;
  • Li, Zigen (School of Civil Engineering, Jilin Jianzhu University) ;
  • Li, Yongqing (Institute of Water Conservancy and Planning Research) ;
  • Xu, Ran (School of Civil Engineering, Jilin Jianzhu University) ;
  • Wang, Yunke (School of Civil Engineering, Jilin Jianzhu University)
  • 투고 : 2020.10.28
  • 심사 : 2021.01.22
  • 발행 : 2021.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, the parameters of haunch height, reinforcement ratio and site condition were evaluated for the influence on the seismic performance of a composite precast fabricated utility tunnel by shaking table test and numerical simulation. The dynamic response laws of acceleration, interlayer displacement and steel strain under unidirectional horizontal seismic excitation were analyzed through four specimens with a similarity ratio of 1:6 in the test. And a numerical model was established and analyzed by the finite element software ABAQUS based on the structure of utility tunnel. The results indicated that composite precast fabricated utility tunnel with the good anti-seismic performance. In a certain range, increasing the height of haunch or the ratio of reinforcement could reduce the influence of seismic wave on the utility tunnel structure, which was beneficial to the structure earthquake resistance. The clay field containing the interlayer of liquefied sandy soil has a certain damping effect on the structure of the utility tunnel, and the displacement response could be reduced by 14.1%. Under the excitation of strong earthquake, the reinforcement strain at the side wall upper end and haunches of the utility tunnel was the biggest, which is the key part of the structure. The experimental results were in good agreement with the fitting results, and the results could provide a reference value for the anti-seismic design and application of composite precast fabricated utility tunnel.

키워드

참고문헌

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