골리앗 크레인의 구조해석 및 검증

김정경(Jeong-Kyeong Kim),신성환(Sung-Hwan Shin),신유인(Yoo-In Shin),송철기(Chul Ki Song),이용희(Yong-Hee Lee),김범근(Bum-Keun Kim),배태한(Tae-han Bae),김중문(Joong-moon Kim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11

Structure analysis and evaluation of 300ton Goliath Crane was conducted by finite element method. The finite element model which is composed with solid element was receives loads self weight, hoisting motion, crane traveling motion, trolley traveling motion, wind force, and earth quake force, etc. In the research, equivalent stress and deformation of the crane were analyzed by ANSYS. Structural safety of crane were confirmed in the results of numerical analysis.

유소년 방과 후 농구교실 참가동기

김정경(Jeong Kyeong Kim),김기한(Ki Han Kim) 한국사회체육학회 2007 한국사회체육학회지 Vol.0 No.30

This research aims to determine what motivates children to participate in the after-school basketball class. To that end, 220 subjects were selected through random sampling in April 2006 from among participants in basketball classes operating in Daegu and North Gyeongsang Province. Data were analyzed using t-test or one-way analysis of variance. The analysis based on research hypotheses came up with the following results. First, as to their basketball class participation motivation by gender, the male group had a higher level of motivation of cleanness, physical aptitude, professionalism, demonstration of show-off, achievement, and spontaneity. Second, as to their basketball class participation motivation by school year, there was a statistically significant difference in all types of motivation, and elementary schoolers in higher school grades had a higher level of motivation than middle school students. Third, as to their basketball class participation motivation by religion, other group and Buddhist group had a higher level of motivation. Fourth, as to their basketball classroom participation motivation by their parents` occupation, participants with their parents` occupation being professional had the highest level of motivation. Fifth, as to their basketball classroom participation motivation by region, residents in cities and counties, overall, had a higher level of motivation. In particular, residents in cities and counties had a high level of motivation of physical aptitude, demonstration of show-off, and spontaneity. Sixth, The villa-residents group had a higher level of motivation than the apartment-residents group. Seventh, the house-owning group had a higher level of cleanness motivation, and the rented-house group had a higher level of motivation of show-off and achievement. Eighth, as to their basketball classroom participation motivation by participation period, The 1 to 6-month group had the highest cleanness motivation level, the 1 to 2 year or lower group had the highest physical aptitude motivation level, and the 7 to 12-month group had the highest level of motivation of show-off, achievement and spontaneity. Ninth, as to their basketball classroom participation motivation by participation attitude, The positive-participants group had a high level of motivation of physical aptitude and spontaneity. Tenth, as to their basketball classroom participation motivation by participation frequency, the weekly four-time or more participants group had the highest level of all types of motivation. Eleventh, as to their basketball classroom participation motivation by preference over basketball, The group which liked basketball had a higher level of physical aptitude motivation, while the group which did not like basketball had the highest level of motivation of cleanness, achievement and spontaneity.

쉴드 TBM 세그먼트 지수재의 배열수 변화에 따른 방수성능 평가

함수권,정훈,김범주,정경한,이석원,Ham, Soo-Kwon,Jung, Hoon,Kim, Beom-Ju,Jeong, Kyeong-han,Lee, Seok-Won 한국터널지하공간학회 2020 한국터널지하공간학회논문집 Vol.22 No.1

최근 국내에서는 쉴드 TBM (Tunnel Boring Machine)을 이용한 터널 굴착에 대한 관심이 크게 증가하고 있다. 쉴드 TBM 터널은 비배수 터널로써 세그먼트 이음부에서 누수가 발생할 경우에는 터널의 사용성 및 안정성에 문제가 될 수 있다. 본 연구에서는 쉴드 TBM 터널의 세그먼트 시공 시 시공오차 및 세그먼트 과다변형에 의한 수팽창 지수재의 방수 성능을 검토하였다. 특히, 수팽창 지수재 1열 배열 및 2열 배열 각각에 대하여 방수 성능을 검토하여, 2열배열의 효율성을 검증하였다. 실험결과, 1열 배열 및 2열 배열 수팽창 지수재는 동일한 방수 성능을 보였다. 즉, 1열 배열 및 2열 배열 모두, 수팽창 지수재는 엇갈림에 대해서는 대응성이 좋으나, 틈새 간격에 대해서는 대응성이 불리한 것으로 나타났다. The interest in the use of shield TBM (Tunnel Boring Machine) on the tunnel excavation has been increased rapidly in Korea. The shield TBM tunnel is generally designed as non-drainage tunnel. Consequently, if water leakage through the segment joints happens, big problems on the usage and stability of tunnel can be occurred. In this study, the variation of waterproof capacity of hydrophilic rubber waterstop by the construction error and excessive displacement of segment was studied. In particular, the waterproof capacity of each of single and double layer arrangements of hydrophilic rubber waterstop was examined to verify the efficiency of the double layer arrangement. The test results show that the single layer and double layer hydrophilic rubber waterstop showed the same waterproof performance. hydrophilic rubber waterstop has favorable on the offset, however unfavorable on the gap.

골리앗 크레인의 구조안정성 검증

신성환(Sung-Hwan Shin),김정경(Jeong-Kyeong Kim),송철기(Chul Ki Song),김범근(Bum-Keun Kim),배태한(Tae-Han Bae),김중문(Joong-moon Kim) 대한기계학회 2011 大韓機械學會論文集A Vol.35 No.11

본 연구는 유한요소해석에 의해 300톤 골리앗 크레인의 구조해석 및 평가를 하였다. 300톤 골리앗 크레인의 구조는 110m의 스판과 50m의 높이로 구성되어 있다. 크레인은 자중, 크레인의 주행 관성력, 트롤리의 주행 관성력, 풍하중, 지진하중을 받는다. 다양한 하중 조건을 입력하여 크레인의 구조 해석을 수행하였다. 크레인의 등가응력과 전체 변형량을 ANSYS Workbench에서 얻은 결과를 이용하여 크레인의 구조 안전성 여부를 판단하였다. Structural analysis and evaluation for the 300ton Goliath Crane were conducted with an FEM tool. The Golliath Crane has a 300 ton hoisting weight, a 110 m span and a 50 m lift. All loads such as the self weight, crane traveling load, trolley traveling load, wind load, and earthquake force, etc., that are indicat in the reference standards, were inputted as various severe conditions affecting the crane. The deformation and equivalent stress (von Mises stress) were evaluated for the crane structures

〈학술논문〉골리앗 크레인의 구조안정성 검증

신성환(Sung-Hwan Shin),김정경(Jeong-Kyeong Kim),송철기(Chul Ki Song),이용희(Yong-Hee Lee),김범근(Bum-Keun Kim),배태한(Tae-Han Bae),김중문(Joong-moon Kim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.4

본 연구에서 구조 해석을 수행할 모델은 권상하중 300ton, 가로 110m, 높이 50m 인 골리앗 크레인이다. 300ton 골리앗 크레인은 유한요소법에 의해 해석되었다. 유한요소모델은 3차원 모델로 구성되어 있으며, 자중, 크레인 주행하중, 트롤리 주행하중, 풍하중, 지진하중와 같은 하중 조건으로 해석을 수행하였다. 본 연구는 범용유한요소 프로그램인 ANSYS WB에 의해 크레인의 등가응력과 전체변형량 해석을 수행하였다. The goliath crane has the 300 ton hoisting weight, the 110m span and the 50 m lift. Evaluation of 300ton Goliath crane was conducted by FEM too1. The finite element model which is composed with solid element. All loads such as dead load, crane traveling load, trolley traveling load, wind load, and earthquake force, etc,. In the research, equivalent stress and deformation of the crane was analyzed by ANSYS. Structural safety of crane was confirmed in the results of numerical analysis.

임상 치과위생사의 직제실태 조사

노희진 ( Hie-jin Noh ),배성숙 ( Sung-suk Bae ),김선경 ( Seon-kyeong Kim ),문소정 ( So-jung Mun ),한선영 ( Sun-young Han ),조효순 ( Hyo-soon Cho ),남정란 ( Jeong-ran Nam ),김성옥 ( Seong-ok Kim ),김보경 ( Bo-kyoung Kim ),정경이 ( K 한국치위생학회(구 한국치위생교육학회) 2017 한국치위생학회지 Vol.17 No.1

Objectives: The present study is aimed at comprehending the organizational setup of clinical dental hygienists and to establish an organizational setup that fits their roles. Methods: The survey data of 776 clinical dental hygienists who understood the purpose of the study and agreed to write the questionnaire was utilized. Statistical analysis was performed using SPSS Ver. 20.0 program and the significance level was 0.05. Results: The presence of an organizational setup in dental hygienists was surveyed as being higher, with university dental hospital (89.86%) showing the highest. However, the presence of position terms was highest in dental hospitals with 76 subjects (38.78%). Standards for positions most commonly followed hospital regulations in the case of general hospitals (48.42%), whereas they were often based on service period in the case of dental hospitals (48.90%). Salary standards were most commonly determined by service period in all institutions. The job satisfaction of dental hygienists was significantly different according to social status and financial satisfaction depended on having organizational hierarchy for those who work in university dental hospitals. Conclusions: The results of the present study show that dental hygienists who work in organizational setups mostly enjoy high satisfaction in terms of job satisfaction. In other words, the study shows that systemizing the organizational setup of dental hygienists within dental institutions is required, and additional research to achieve efficient human resource management within the organization is necessary as well as institutional utilization of the results of the present study.