Computers and Concrete

  • 제32권1호
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  • Pages.15-26
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  • 2023
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Study on seismic performance of shaking table model of full light-weight concrete utility tunnel

  • Yanmin Yang (School of Civil Engineering, Jilin Jianzhu University) ;
  • Qi Yuan (School of Civil Engineering, Jilin Jianzhu University) ;
  • Yongqing Li (Xinlicheng Reservoir Management Center) ;
  • Jingyu Li (School of Civil Engineering, Jilin Jianzhu University) ;
  • Yuan Gao (School of Civil Engineering, Jilin Jianzhu University) ;
  • Yuzhe Zou (School of Civil Engineering, Jilin Jianzhu University)
  • 투고 : 2022.07.19
  • 심사 : 2023.03.17
  • 발행 : 2023.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

In order to study the anti-seismic performance of full light-weight concrete utility tunnel, EL Centro seismic waves were input, and the seismic simulation shaking table test was carried out on the four utility tunnel models. The dynamic characteristics and acceleration response of the system consisting of the utility tunnel structure and the soil, and the interlayer displacement response of the structure were analyzed. The influence law of different construction methods, haunch heights and concrete types on the dynamic response of the utility tunnel structure was studied. And the experimental results were compared with the finite element calculation results. The results indicated that with the increase of seismic wave intensity, the natural frequency of the utility tunnel structure system decreased and the damping ratio increased. The assembling composite construction method could be equivalent to replace the integral cast-in-place construction method. The haunch height of the assembling composite full light-weight concrete utility tunnel was increased from 30 mm to 50 mm to enhance the anti-seismic performance during large earthquakes. The anti-seismic performance of the full light-weight concrete utility tunnel was better than that of the ordinary concrete utility tunnel. The peak acceleration of the structure was reduced by 21.8% and the interlayer displacement was reduced by 45.8% by using full light-weight concrete. The finite element simulation results were in good agreement with the experimental results, which could provide reference for practical engineering design and application.

키워드

과제정보

This research was supported by Jilin Province Science and Technology Department Key Research and Development Project (20200403071SF), National Emergency Management Department Safety Accident Prevention Science and Technology Project (jilin-0001-2018AQ) and Jilin Provincial Education Department "Thirteenth Five-Year" Science and Technology Project (JJKH20200281KJ).

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