Ecology and Resilient Infrastructure

Korean Society of Ecology and Infrastructure Engineering (응용생태공학회)
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Structural Analysis of Multi-Functional Fishway in Seomoon Weir

서문보의 다기능 어도의 구조해석

  • Lee, Young Jae (Department of Civil Engineering, Kyungpook National University) ;
  • Lee, Jung Shin (Intelligent Construction Automation Center, Kyungpook National University) ;
  • Jang, Hyung Kyu (Research Institute for Disaster Prevention, Kyungpook National University)
  • 이영재 (경북대학교 토목공학과) ;
  • 이정신 (경북대학교 지능형 건설자동화연구센터) ;
  • 장형규 (경북대학교 방재연구소)
  • Received : 2020.11.11
  • Accepted : 2020.12.02
  • Published : 2020.12.31
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Abstract

In this study, the field applicability of the recently constructed multifunctional fishway in Seomunbo, Yeongcheon-si, and Gyeongsangbuk-do were examined. The analysis variables were R/C slab (S1) and R/C+S/C slab (S2), the underground passage standard areas (width × length) were 1.4 m × 0.2 m, 1.4 m × 0.3 m, and 1.4 m × 0.6 m, and the flow velocities were 0.8, 1.2, and 1.6 m/s. As a result of the analysis, the safety of the design of Seomunbo was evaluated. The analysis showed compared to the Seomoon Weir fishway, the maximum stress of S2 decreased by 24 - 32%, the bending moment of the underground passage decreased by 16 - 33%, the maximum stress of the sidewall decreased by 20 - 36%. In addition, the bending moment of the upper slab decreased by 17 - 33%, the maximum stress of the upper slab decreased by 9 - 28%, and the bending moment decreased by 19 - 33%. Complementation was required in the following percentages: 18% and 14% for the maximum stress and bending moment of the underground passage, respectively, 15% and 17% for the maximum sidewall stress and bending moment, respectively, and 11% and 16% for the upper slab maximum stress and bending moment, respectively. The results showed that S2 was superior to that of the Seomoon Weir fishway, and the underground passage size of 1.4 m × 0.3 m was superior to those of 1.4 m × 0.2 m and 1.4 m × 0.6 m, and R/C+S/C slab was superior to that of R/C slab. The findings are expected to be useful for constructing and designing the multifunctional fishway.

본 논문은 경북 영천시 서문보에 최근 건설된 다기능 어도의 현장 적용성을 검토하기 위해 해석 변수를 R/C Slab (S1), R/C+S/C Slab (S2) 및 지하이동통로 규격 (가로 × 세로)을 1.4 × 0.2 m, 1.4 × 0.3 m, 1.4 × 0.6 m와 유속 0.8 m/s, 1.2 m/s, 1.6 m/s 으로 구분하여 해석한 결과 서문보 설계식 안전성을 평가하였다. 서문보의 설계식 보다 R/C+S/C Slab타입이 지하이동통로 출구부는 휨모멘트와 최대응력은 각각 16 - 33%, 24 - 32%, 측벽은 각각 17 - 33%, 20 - 36%, 상부슬래브인 경우도 19 - 33%, 9 - 28% 적게 나타났다. 따라서 최대응력과 휨모멘트가 R/C+S/C Slab 타입이 구조 안전성이 확보되는 것으로 나타났다. 따라서 지하통로는 휨모멘트와 최대 응력이 각각 14%, 18%, 측벽은 17%, 15% 상부슬래브는 16%, 11%의 보완이 요구되는 것으로 판단된다. 이러한 결과는 지하이동통로 규격이 서문보 규격과 동일한 1.4 × 0.3 m 일 때가 1.4 × 0.2 m, 1.4 × 0.6 m보다 안전성이 가장 유리한 것으로 확인되었다. 또한 해석 및 분석 결과를 근거로 서문보 규모의 다기능 어도 적용 시 기본 자료로 활용이 기대된다.

Keywords

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