http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
부산·경남지역 퇴적 점토의 함수비를 이용한 압밀정수 산정 연구
강성욱,김대환,김태형,정진교,주인곤,Sung-Uk Kang,Dae-Hwan Kim,Tae-hyung Kim,Chin-Gyo Chung,In-Gon Joo 한국지반신소재학회 2024 한국지반신소재학회 논문집 Vol.23 No.1
In this study, physical property tests and standard consolidation tests were conducted on the marine clay of Busan New Port and North Port, the middle and lower reaches of the Nakdong River including Gimhae and Yangsan, and Ulsan regions. The moisture content, a property unrelated to sample disturbance with small individual test errors, was used for regression analysis with the compression index, virgin compression index, consolidation coefficient, expansion index, and secondary compression index, among others. Subsequently, the correlation and accuracy were evaluated. Upon analyzing the correlation between the moisture content, void ratio, and liquid limit commonly used physical properties for calculating compression indexes, it was confirmed that the liquid limit had the lowest correlation. Through a linear regression analysis of the consolidation constants using the current moisture content in the natural state, a high correlation was demonstrated. Relationship equations were then presented to determine settlement and settlement time. This study suggests that moisture content can be utilized as an alternative for evaluating and calculating consolidation constants when examining ground settlement in sedimentary clays distributed in the Busan and Gyeongnam regions.
강성욱(Sung Uk Kang),장정욱(Jeong Wook Jang),정연인(Youn In Chung) 한국해안해양공학회 2016 한국해안해양공학회 논문집 Vol.28 No.5
낙동강 하구지역에 위치하고 있는 녹산지역과 장유지역에서 채취한 불교란 연약 점성토에 대한 물리적 특성시험과 압밀시험을 수행한 결과 다음과 같은 결론을 얻었다. 낙동강 하구지역 점성토의 주요 점토광물은 Kaolinite, Illite 계열로 분류되었다. 자연함수비는 녹산지역 및 장유지역이 각각 50.4~92.8%, 46.6~99.0%의 범위로 비슷하게 분포하고 있으며, 두 지역 모두 액성한계는 자연함수비(Wn)보다 낮게 나타났다. 압축지수는 녹산지역이 0.44~1.57의 범위로 분포하고, 장유지역은 0.67~1.94의 범위로 분포하고 있어 녹산지역보다 장유지역이 다소 높게 나타났다. 이차압축지수 역시 장유지역이 0.027~0.092로 녹산지역 0.024~0.075보다 높은 것으로 나타났다. 회귀분석결과 함수비(Wn)와 압축지수와의 관계는 선형적이며, 초기간극비와 압축지수와의 관계는 Cc=0.80eo − 0.58로 나타났다. Cα/Cc비는 0.03~0.08로 다소 넓은 범위의 값을 나타내었다. From having an experimental study of physical and consolidation characteristics of soft clay in Nakdong river lower basin, we come to the conclusion as follow. Clay minerals in Nakdong river lower basin are classified into Kaolinite and Illite. Water content(Wn) is similarly distributed in a range of 50.4% to 92.8% in Noksan and 46.6% to 99.0% in Jangyu, and liquid limit(LL) of both areas appears lower than water content. In the case of compression index, the index of jangyu is a little higher than that of Noksan because Jangyu is in a range of 0.67 to 1.94 and Noksan in a range of 0.44 to 1.5. The second compression index of Jangyu in a range of 0.027 to 0.092 is also higher than Noksan in a range of 0.024 to 0.075. As a result of regression analysis, a relation between water content and compression index is linear, and between initial void ratio and compression index is shown to Cc = 0.80eo − 0.58. The ratio of Cα/Cc in a range of 0.03 to 0.08 expresses a wide range.
일부 도시지역 주민의 흡연 실태와 이에 영향을 미치는 요인
강성진,남철현,이정희,강성욱,김문환,오선영,이상희,Kang, Sung-Jin,Nam, Chul-Hyun,Lee, Chung-Hee,Kang, Sung-Uk,Kim, Moon-Hwan,Oh, Sun-Yoeng,Lee, Sang-Hee 대한예방한의학회 2008 대한예방한의학회지 Vol.12 No.3
Purpose : To know the smoking status of regional residents and to contribute the development of smoking education program by analyzing the related characteristics and affecting variables. by convenience sampling of total 1,300 regional residents in Daegu. Method : The investigation was conducted with 1,204 residents in mid to small urban area of Gyeongsangbukdo. for 3 months from April 1, to June 30, 2007. Results : 1) The current smoking rate of test subjects was 19.3% and 63% responded as non smoker, and 17.1% of test subjects responded as currently stopped smoking. 2) The smokers' age that habitually started smoking resulted to show the highest distribution at their age of $20{\sim}29$ by including 49.3% in 446 smokers, and 39.6% in ages younger than 19 years old. 3) The subjective health status of test subjects was found to be healthy in 65.1% of nonsmokers. 4) The increase of stress along with the increase of depression significantly had large effects on smoking rate. 5) When the regression analyses were conducted, test subjects' sex, age, religion, current residing area, occupation, the level of health status, the level of stress and the level of depression found to have significant effects, and the influence of these variables was 27.4% by showing an overall significance. Conclusion : Primarily, the average smoking rate of regional residents was slightly decreased, but the smoking rate in juveniles, university students, professional workers, office workers, labor workers and women were found to be increased. Therefore smoking prevention and stop smoking policies have to be enforced with the development of more effective education programs. Secondly, the health status especially the increase of stress along with the increase of depression significantly had large effects on smoking rate. So, it is considered that the responsible government, related organizations and experts should make efforts not only for the improvement of health and but also for the establishment of stress and depression solving measures. Thirdly, the supports and willingness of government and local government for substantial practicing the development of smoking prevention and stop smoking enforcement policy education programs have to be advanced with the systematic backup as the first step of improving health of national peoples.