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http://dx.doi.org/10.12652/Ksce.2011.31.3D.433

Computing Procedure of Daily Average Air Temperature using Field Data and Frost Index Calibration for Anti-Frost Heave Layer Design  

Cho, Myung-Hwan ((주)도화엔지니어링 기술개발연구원)
Kim, Nakseok (경기대학교 토목공학과)
Shim, Jaepill ((주)도화엔지니어링 기술개발연구원)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.31, no.3D, 2011 , pp. 433-439 More about this Journal
Abstract
The frost depth(frost penetration) is used to install anti-frost heave layers in pavement designs. The freezing index is calculated by an annual accumulated value of multiplying the period of time with temperatures below zero, and the corresponding temperature. Therefore, the DAAT(daily average air temperature) calculation method may play an effect on the FI(freezing index). The Weather Observatory used to supply 4 average air temperatures per day, but currently supplies 8 per day. With this study, we divided the southern part(below FI=$350^{\circ}C{\cdot}day$) of the Korean peninsula into 6 areas according to site conditions(low embankment, embankment-cutting slope, and the cutting slope) and established a field measurement system for 15 positions to check the effects on the result of FI according to differing DAAT calculation methods. The air temperatures obtained by the field measurement system was used to calculate and compare the FI. As a result, the freezing index calculated based on the $DAAT_4(T_4)$ is normally greater by 3% than the one on $DAAT_8(T_8)$. In addition, the calibration equation for the freezing index using air temperatures was proposed through the research.
Keywords
freezing index; calibration; frost depth; daily average air temperature; anti-frost heave layer;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 류상범, 김연희(2007) 기상청 기후자료의 균질성 문제(II) : 통계 지침의 변경, 대기, 한국기상학회, Vol. 17, No. 1, pp. 17-26.
2 조규태, 진정훈, 남영국(2002) 도로포장의 동상방지층 효용성 검증을 위한 현장계측 및 실내시험 연구, 대한토목학회논문집, 대한토목학회, 제22권 제5D호, pp. 913-921.
3 조명환, 이윤한, 진정훈, 심재필(2010) 아스팔트 콘크리트 포장의 표층 포설에 따른 노상토의 함수비 및 온도의 변동 특성 연구, 제36회 정기학술대회 논문집, 대한토목학회.
4 Bae, A., Solaimanian, M, Stoffels, S. Frost Depth Evaluation Considering Freeze-Thaw Cycles in Moderate Cold Regions, TRB 87th Annual Meeting, Transportation Research Board, pp. 36- 44.
5 United States Army Corps of Engineers (1966) T.M. 5-818-3.
6 United States Army Corps of Engineers (2001) Pavement Design for Airfieldsd, UFC 3-260-02.
7 Basham, D. L., Wright, J. W., Ferguson, K. I., Moy, G. W. (2001) Pavement Design for Airfields, UFC 3-260-2, United Facilities Criteria.
8 Wilks, D. S. (1995) Statistical Methods in the Atmospheric Sciences, Academic Press, p. 467.
9 건설교통부(2001) 도로설계편람(II).
10 국토해양부(2008) 국도건설공사 설계실무 요령.
11 국립건설시험소(1989) 동결심도조사보고서(NO. 498), 건설부.
12 권기철(2004) 국내 노상토의 동결.융해 특성, 대한토목학회논문집, 대한토목학회, 제24권 제2D호, pp. 213-219.
13 기상청(2004) 근대기상 100년사.
14 기상청(2007) 기후통계지침.
15 김석명(2003) 최근 기온변화가 동결지수 및 포장두께에 미치는 영향분석, 석사학위논문, 연세대학교.
16 김영진, 홍승서(2009) 동결지수와 전국 장국도에서 실측한 동결 깊이의 관계, 한국지반환경공학회논문집, 한국지반환경공학회, Vol. 10, No. 4, pp. 15-24.