http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
Risk assessment of triclosan, a cosmetic preservative
Jung Dae Lee(이정대),Joo Young Lee(이주영),Seung Jun Kwack(곽승준),Chan Young Shin(신찬영),Yong-Kyu Choi(최용규),Chung Sik Min(민충식),Hyun Jun Jang(장현준),Hyang Yeon Kim(김향연),Min Kook Kim(김민국),Dong Wan Seo(서동완),Byung-Mu 환경독성보건학회 2019 한국독성학회 심포지움 및 학술발표회 Vol.2019 No.4
풍화대소켓 현장타설말뚝의 극한단위선단지지력과 원위치 지반조사방법들과의 상관관계 분석
최용규(Choi Yongkyu),권오성(Kwon Oh Sung),이종성(Lee Jong Seong),최성순(Choi Sung Soon),정성민(Jung Sung Min) 대한토목학회 2010 대한토목학회논문집 C Vol.30 No.2
일반적으로 암반에 소켓된 현장타설말뚝기초의 선단지지력은 일축압축강도를 이용하여 산정하고 있다. 그러나, 풍화대 지반에서는 불교란시료의 채취가 어려워 일축압축강도를 확인하는 것이 곤란하므로 기존 지지력산정공식을 사용할 수 없다. 따라서 본 연구에서는 풍화대 지반에서 수행할 수 있는 원위치시험들(SPT, DCPT, PMT, BST)의 특성치와 현장타설말뚝의 선단지지력과의 관계를 말뚝선단부에 인접한 5개의 구간들(선단부, 선단~하부1D, 선단~하부2D, 상부1D~하부1D, 상부1D~하부2D)에 대하여 분석하였다. 그 결과 DCTP의 결과가 가장 신뢰성 있는 상관관계를 나타내었다. 또한 DCPT를 이용한 선단지지력의 설계도표를 제안하였다. To calculate the end bearing capacity of a drilled Shaft socketed into the rockmass, the unconfined compression strength could be used. But it is difficult to find the unconfined compression strength because it is impossible to get undisturbed samples in weathered soils and rocks. So, to calculate the end bearing capacity, the existing bearing formula could not be used. In this study, for five zones (near pile tip, tip-lower 1D, tip~lower 2D, upper 1D~lower 1D, upper 1D~lower 2D), the relationships between the characteristic values of in-situ tests(SPT, DCPT PMT, BST) and the end bearing capacity of drilled shafts were analysed. As a result, DCPT results were represented the best credibility. Also, a design chart of end bearing capacity using DCPT was suggested.
최용규(Yong Kyu Choi),권정노(Jung No Kwon) 한국수산과학회 1998 한국수산과학회지 Vol.31 No.3
The data of Secchi disc observation collected during 1966-1990 were analyzed to investigate the seasonal variation of transparency in the southeastern Yellow Sea. The bimonthly distribution of mean transparency showed that the isolines of transparency were roughly parallel to the isobaths. The transparency was low (3 m in February and 8 m in August) if the shallow water less than 20 m depth in comparision to the higher values (l0 m in February and 17 m in August) in the deeper water. The lowest transparency was found in winter. The transparency increased in spring and the highest transparency occurred in stammer. The water becomes turbid in autumn. Suspended solid concentrations in winter are ranged from 28 to 130 ㎎/ℓ, and from 8 to 60 ㎎/ℓ in summer. The seasonal variation of transparency seems to be mainly affected by resuspension of solid Iron the bottom. The amounts of suspended solid are large in winter due to the vertical convection by coaling effect and tubulence by the song wind, and small in summer due to the strong stratification and weak wind.