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지하철역사내 측정위치별 PM-10 및 중금속 농도특성에 관한 연구
장정욱(Chang Jung-Wook),조장제(Cho Jang-Je),최우건(Choi Woo-Gun),박덕신(Park Duk-Sin),정우성(Jung Woo-Sung),김태오(Kim Tae-Oh) 한국철도학회 2003 한국철도학회 학술발표대회논문집 Vol.- No.-
Subway has been used one of major public transportations because of overpopulation and heavy traffic problems in the metropolitan areas. So, the air pollution has been serious. In this study, continuous date of PM-to (particles with aerodynamic diameter < 10㎛) and heavy metal concentration measurements for winter, spring and summer. These measurements have been carried out in the outdoor, concourse, platform, tunnel. The study results showed that the average seasonally concentration of PM-10 particles were 141.57㎍/㎥ in winter, 129.34㎍/㎥ in spring and 122.73㎍/㎥. The average concentration of PM-10 particles at indoor higher than outdoor. The concentration of Fe, Cu, showed the largest peak concentrations during the respective season.
장정욱,박춘식,정창덕 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-
This thesis studied an lower ground clay of Pusan New Port Project site, in order to grasp engineering characteristics of Pusan clay. The physical and mechanical found in the clay are summarized as follows. (1) The physical characteristics are summarized in the following table. ◁ 원문 표 참조 ▷ (2) The mechanical characteristics are summarized in the following table. ◁ 원문 표 참조 ▷
SUNEX와 PLAXIS에 의한 흙막이벽의 안정해석 비교 연구
장정욱,박춘식,정창덕 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-
This study compared the results of the two programs, SUNEX and PLAXIS, regarding the stability of earth retaining wall. The conclusions of the study are as follows. (1) The stability analysis of earth retaining wall in soft clay ground showed the instable result from PLAXIS than SUNEX. (2) In sand ground, the results of SUNEX appeared less stable than PLAXIS. (3) In the composite ground, the results of both programs turned out almost the same except the maximum settlement.
소단조건이 토사사면의 안정성에 미치는 영향에 관한 연구
장정욱,박춘식,정창덕 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-
This study performed stability analysis of soil slope according to conditions of berm. The conclusions of the study are as follows. (1) As the result of stability analysis with the number of berm and inclination of slope as variables, the increase ratio of safety factor was higher as the slope inclination increased, and became the highest when the first berm was added. (2) The safety factor increased as the width of berm increased, but a significant correlation between them was not found. (3) Stability analysis performed with different soil conditions resulted in the increase ratio of safety factor showing 'sandy soil < weathered soil < clayey soil' as the width of berm increased. (4) Stability analysis performed with different berm locations resulted in safety factor showing 'top lever < bottom lever < middle lever', but the differences between the values were not considerable.