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홍원표,이광우,조삼덕,이재호 한국지반공학회 2006 한국지반공학회논문집 Vol.22 No.10
The lateral soil movement in soft grounds undergoing improvement with application of vertical drains is analyzed on the basis of monitoring data at three fields, in which fifty six monitoring sites are located. Based on the investigations, the criterions are suggested to predict the lateral soil movement. In order to predict the lateral soil movement in the improved soft grounds by using the dimensionless parameter R suggested by Marche & Chapuis (1974), it is desirable that the maximum lateral displacement in the soft ground below the toe of embankment should be applied to calculate R instead of the lateral displacement at the toe of embankment. The lateral soil movement may increase rapidly, if the safety factor of slope is less than 1.4 in case of high ratio of H/B (Thickness of soft ground/Embankment width) such as 1.15 or is less than 1.2 in case of low ratio of H/B such as 0.05. Also, the graph suggested by Tschebotarioff (1973), which illustrates the relationship between the maximum height of embankments and the undrained shear strength of soft grounds, can be applied to the evaluation for the possibility of the lateral soil movement due to embankments on soft grounds.
TRNSYS를 이용한 대형할인마트 하이브리드에너지시스템 해석 : 에너지소비해석 중심
홍원표,곽유석 한국조명·전기설비학회 2012 한국조명·전기설비학회 학술대회논문집 Vol.2012 No.10
This study present the results of the energy performance and characteristics in the large scale store. TRNSYS is used for the dynamic thermal analysis of the complex building energy systems. The study is verified by comparing the energy measurement of large scale store and dynamic simulation results.
홍원표,송영석,김동욱 대한토목학회 2004 대한토목학회논문집 C Vol.24 No.3
인천국제공항 공사현장의 19개 흙막이 굴착단면에서 계측된 자료를 토대로 연약지반에 설치된 버팀보지지 강널말뚝 흙막이벽의 수평변위와 흙막이벽에 작용하는 측방토압을 조사하였다. 연약지반에서 버팀보지지 흙막이벽에 작용하는 측방토압의 분포는 직사각형 모양이며, 측방토압의 크기는 0.6gH임을 알 수 있다. 제안된 측방토압의 크기는 Terzaghi and Peck(1967) 및 Tschebotarioff (1973)의 경험토압보다 크며, NAVFAC(1982)의 경험토압과 동일함을 알 수 있다. 한편, 연약지반에 설치된 버팀보지지 흙막이벽의 안정성에 대한 판단기준은 흙막이벽의 최대수평변위와 안정수를 이용하여 마련할 수 있다. 흙막이벽의 수평변위가 각 굴착단계별 굴착깊이의 1%이하이면 흙막이벽의 안정성이 양호한 현장이고, 1~2.5%이면 주의시공을 요하는 현장이며, 2.5%이상이면 흙막이벽의 안정성이 불향한 현장이라고 판단할 수 있다. Based on the measured field data obtained from nineteen excavation sections in Inchon International Airport project site, the horizontal displacements of the sheet piling walls with struts installed in soft ground and the lateral earth pressures acting on the these sheet piling walls were investigated. The proposed diagram of lateral earth pressure is a rectangular form, and the maximum earth pressure corresponds to 0.6gH. The maximum earth pressure is larger than the empirical earth pressures proposed by Terzaghi and Peck (1967) and Tschebotarioff (1973), it is similar to the empirical earth pressure proposed by NAVFAC (1982). The quantitative safe criterion of sheet piling walls with struts is established from the relationships between horizontal displacement of walls and stability number in excavated ground. If the horizontal displacement shows lower than 1% of excavation depth, the sheet piling walls exist under stable state. When the horizontal displacement is developed more than 1% and less than 2.5% of excavation depth, excavation works should be observed with caution. Also, when the horizontal displacement is developed more than 2.5% of excavation depth, appropriate remediations and reinforcements are applied to sheet piling walls.