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Original Article

Statistical Characteristics of Pier-Scour Equations for Scour Depth Calculation

교각세굴심 산정 공식의 통계적 특성

Ho Jin Lee1
,
Hyung Joon Chang2
,
Tae Young Heo3*
이 호진1
,
장 형준2
,
허 태영3*
1Professor, School of Civil Engineering, Chungbuk National University
2Post Doctor, School of Civil Engineering, Chungbuk National University
3Professor, School of Information and Statistics, Chungbuk National University
1충북대학교 토목공학부 교수
2충북대학교 토목공학부 박사후 연구원
3충북대학교 정보통계학과 교수
*Corresponding Author
30 September 2019. pp. 51-57
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Abstract

In recent years, the occurrence of localized torrential rain has increased due to the increase in heavy rainfall and massive typhoons caused by abnormal weather. As a result, the flow rate of small and medium-sized rivers in Korea is rapidly increasing, affecting the safety of bridges and increasing the risk of scour. However, the domestic bridge construction technology does not reflect the watershed characteristics of domestic rivers because the bridge scour depth calculation formula developed overseas is used to calculate the bridge scour depth. Therefore, this study is a basic study for prevention of bridge damage according to scouring phenomenon, and a comparative analysis was performed between the experimental data measured through hydraulic model test and the scour depth formulas applied in Korea. In addition, the statistical analysis between experimental data and scour depth formula shows that Coleman's (1971) formula estimates the best scour depth. The results of this study are expected to be used to calculate more accurate bridge scour depth in river design and bridge design.

Keywords
Pier
Scour depth
Statistical Analysis
River Design

최근 이상기후로 인한 집중호우, 대규모 태풍 등의 증가로 국지성 집중호우의 발생빈도가 높아지고 있다. 이로 인하여 국내 중소규모 하천의 유량이 급격하게 증가함에 따라 교량의 안전성에 영향을 미치고 있으며, 세굴에 대한 위험성도 증가하고 있다. 그러나 국내 교량건설기술에서는 교각 세굴심을 산정하기 위하여 해외의 교각 세굴심 산정식을 활용하고 있어 국내 하천의 유역특성을 반영하지 못하고 있는 실정이다. 따라서 본 연구는 세굴현상에 따른 교량피해를 예방하기 위한 기초연구로써, 수리모형실험을 통해 측정된 실험자료와 국내에 적용되고 있는 세굴 산정식들간의 비교 분석을 수행하였다. 또한 실험자료와 세굴 산정식의 통계분석을 통하여 Coleman(1971) 공식이 가장 우수하게 세굴심을 산정하고 있는 것을 확인하였다. 본 연구의 결과는 향후 하천설계 및 교량설계에 있어 보다 정확한 교각 세굴심을 산정하는데 활용 될 수 있을 것으로 기대된다.

키워드
교각
세굴심
통계분석
하천설계
References
1
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2
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Korean References Translated from the English

1
민병윤, 장형준, 이호진, 김성덕 (2019). 하천 세굴심 산정을 위한 교각 세굴심 산정식의 적용성 검토. 한국방재안전학회 논문집. 12(1): 1-9.
2
박제완 (2012). 하천 만곡부의 세굴심 산정을 위한 산정식의 적용성 평가. 강원대학교 석사학위논문.
3
이성수 (2001). 원환을 이용한 연속교각에서의 국부세굴심 감소효과. 홍익대학교 석사학위논문.
4
임준홍 (2002). 산지 소하천에서의 교각세굴심에 관한 실험적 연구. 단국대학교 석사학위논문.
5
유중식 (1997). 현장에서의 세굴깊이 측정 및 적용성 검토. 명지대학교 석사학위논문.
Information
  • Publisher :Korean Society of Disaster and Security
  • Publisher(Ko) :한국방재안전학회
  • Journal Title :Journal of Korean Society of Disaster and Security
  • Journal Title(Ko) :한국방재안전학회 논문집
  • Volume : 12
  • No :3
  • Pages :51-57
  • Received Date : 2019-09-09
  • Revised Date : 2019-09-18
  • Accepted Date : 2019-09-24
  • DOI :https://doi.org/10.21729/ksds.2019.12.3.51
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