젊은 남자에게 발생한 통상성 간질성 폐렴과 동반된 폐암 1예

박종숙,이준혁,박성우,장안수,박춘식,박재성,백상현,고은석,신화균 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Usual interstitial pneumonia(UIP) is relatively rare disease of lung parenchyme under the age of 50. Lung cancer is reported to occur as a complication of UIP, but has not been reported in young age patient with UIP in Korea. A 35-year-old man was admitted to the hospital because of dyspnea, cough and mild fever. He had been suffered from dyspnea during 3 years. The dyspnea worsened recent 1 month ago. He had been treated with pneumonia at another hospital during 4 months before this admission. Chest radiographs and High resolution CT showed subpleural and basal dominant reticular opacities in both lung with no change until now. He was smoker and his occupation was car engine-man dealing with benzene. UIP is suspected by history and radiologic findings. Operation for open lung biopsy was performed to obtain lung specimen via video-assisted thoracoscopic surgery. Patient's pathologic examination showed UIP combined with adenocarcinoma in RLL superior segment and posterobasal segment and RLL lobectomy was done. After operation, the patient has been in cancer free condition so far. We report a case of UIP combined with lung cancer in young man with brief review of the literature.

사면안정 해석방법의 차이에 의한 안전율의 비교 연구

박춘식,장정욱,안준희 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

This study performed slope stability analysis by changing analysis methods and shear strength with the slope stability analysis program. The conclusions of the study are as follows. 1) The safe factor of clayey soil applied with Bishop's simple method turned out to be similar to or slightly higher than those of other methods, for both dry and saturated conditions. 2) The safe factor of sandy soil applied with GLE method turned out to be slightly higher than those of other methods. But when applied with Bishop's simple method, it appeared to be slightly higher than those of other methods. 3) The safe factor of ordinary soil applied with GLE method showed the highest result. 4) Janbu method showed the lowest safe factor among all the methods for the above three types of soils.

구속압 및 과압밀비가 점성토의 변형·강도특성에 미치는 영향]

박춘식,장정욱,최차석 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

The purpose of this study is to investigate the deformation and strength characteristics of clay by confining pressure and O.C.R by triaxial compression test. The results are shown as follows. 1)In normally consolidated clay soil of confining pressure, the more σ₃is increased, the more internal friction angle is decreased. 2) Within 0.3~4.0kgf/㎠ range of σ₃, internal friction angle has shown confining pressure about 5~6˚. 3)A point of destory, pore-pressure moduls is increased as σ₃is getting increase.

교대의 조시시공을 위한 단계별 성토고 결정에 관한 연구

박춘식,장정욱,김종환 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

This study suggests solutions to the problem of consolidation settlement or lateral movement, which may occur when roads or civil structures are constructed on soft clay. It also presents a proposal to determine appropriate height and time of embankment for early construction of abutment, on the basis of soil parameters in terms of reverse analysis. The following shows the summary of the study. (1) The Hyperbolic method was applied to the field measurement to compute a predictable final settlement. (2) The field measurement was analyzed by Asaoka method and a reverse analysis was carried out on the coefficient of consolidation of the vertical drain method. (3) The target amount of settlement was determined by the try and error method, which considered consolidation settlement to form the planned height. (4) Appropriate heigh and time of stepped embankment was determined to reach the target amount of settlement. (5) Slope stability of the step embankment was examined.

하천 횡단 지하구조물 시공 시 발생하는 오차원인 및 보완대책에 관한 연구

박춘식,장정욱,박진규 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

This thesis studied construction errors and complement methods of steel pile pressure injection method. We studied Daesan, Changwon, Gyoungnam. We analyzed the construction results in terms of FEM analysis. The conclusions of the study are as follows. 1) We found that the settlement of steel piles was caused by a great disturbance of the underground, which had in turn been caused by the pressure injection of steel piles. The settlement of steel piles exceeded the allowable settlement. The following summarizes the results of Terzaghi's consolidation theory and FEM regarding ground reinforcement. 2) The Semi-Shield method and Micro Tunnelling method turned out to be the most appropriate method.

盛土에 의한 橋臺의 側方移動에 대한 硏究

박춘식,장정욱,유기재,최성민 國立 昌原大學校 産業技術硏究所 2002 産技硏論文集 Vol.16 No.-

This Study investigated a possibility of lateral movement in the reconstruction field of Nongso bridge at Nongso-ri, Joochon-myeon, Kimhae. The methods applied in this study were the judgement formula and the Finite Element Method(FEM). The conclusions are shown in the following. 1) The application of the FEM, as well as the judgement formula resulted in the lateral movement. 2) Bridge abutment and foundation must be constructed after completing consolidation. 3) The occurrence possibility of lateral movement should be judged by the FEM that can re-present field conditions. 4) Lateral movement will take place in the case. Hence, settlement of proper countermeasure method should be followed by the construction.

NATM 터널간의 굴착거리에 따른 터널 거동에 관한 연구

박춘식,장정욱,안병호 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

This thesis studied the behavior of tunnels according to the change in the excavation distance during the additional construction of NATM tunnels. The Finite Difference Method was employed to analyze the crown settlement, the horizontal convergence, and the axial force of rock bolts, extending the distance between the tunnels up to five times as long as the diameter of tunnel. It turned out that the crown settlement, the horizontal convergence, and the axial force of rock bolts became decrease as the distance between the tunnels became farther, and that they converged when the distance between the tunnels was over 3D.

지하수위 고려방법에 따른 사면안전율의 비교연구

박춘식,장정욱,장일석 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

This study examined soil parameters, existence of ground water, and the safety factors of slope according to the ground water level. The following are the conclusions of the study. (1) The safety factor became less as the ground water level decreased. (2) The greater the cohesion became, the less the safety factors according to the ground water level did. (3) In the case with ground water, greater cohesion had less effect on the safety factor. However, in the case without ground water, changes in cohesion had considerable effects on the safety factor. (4) While the safety factor increased associated with increase in the angle of shear resistance as the ground water level, the safety factor according to cohesion was almost constant.

전단파괴된 제방의 보강공법 비교 연구

박춘식,장정욱,장일석 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

This study suggests the most reasonable analytical and reinforcement methods for possible collapse of underground caused by levee construction on the soft ground. We inspected stability of levee in the field where heaving caused by sliding had occurred. We applied three reinforcement methods: Surcharge method, Sand Compaction Pile method, and Deep mixing method, all of which met the allowable safe factor. However, Surcharge method requires great amount of costs for land compensation and Sand Compaction Pile method had disadvantages of higher construction cost and instability of levee caused by vibration. Therefore, Deep mixing method is considered the most proper method.

평면변형률 압축시험에 의한 입상체의 강도이방성

박춘식 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

Anisotropy in strength and deformation characteristics of isotropically consolidated sands prepared by pluviating through air was studied by plane strain compression tests. Seven types of sand of the world-wide origins were tested, which have been extensively used for research purposes. The strains for direction of maximum principal stress and direction of minimum principal stress were measured continuously from 10(-6) to 10-². The following results common for all sands were obtained. The behaviour at strains less than about 0.001% was elastic and isotropic regardless of the angle δ of the σ₁ direction relative to the bedding plane. However, the sands became gradually more anisotropic as the strain increased exceeding the elastic limit. The peak strength was noticeably anisotropic with a similar trend that the angle of internal friction φ decreased as δ decreased from 90°, and the ratio of the smallest to largest values of φ was between 0.982 and 0.90. The φ has a minimum at δ=0°∼30 depending on the types of sand. The residual strength became isotropic again.