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최만용 ( Choi Man-yong ),권일범 ( Kwon Il-bum ),김치엽 ( Kim Chi-yeop ) 한국구조물진단유지관리공학회 1997 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.1 No.1
강트러스 교량의 손상발생을 검출하기 위한 기법을 실험실 안에서 연구하기 위하여 실교량을 1/15로 축소한 3차원 강트러스 교량을 제작하고 실험하였다. 강교량의 손상시나리오를 6개로 선정하고 동적 유한요소해석을 수행하여 축소모형 강교량의 동적특성을 해석적으로 검토하였다. 축소 모형 강교량은 8개의 베이(bay)를 갖는 단경간의 복사재로 구성하여 설계하고 제작하였다. 이동하 중차량은 서보모터를 사용하여 140Kg의 최대무게 및 최대속도 4m/sec로 가동할 수 있도록 제작하였다. 이동하중차량에 의한 실험결과 가속도계 신호로부터 주파수 스펙트럼이 손상에 따라 크게 변화하는 것을 확인하였다. 따라서 이러한 동적 특성 검출에 의하여 강교량의 붕괴 이전에 손상을 검출할 수 있도록 상시감시할 수 있음을 알 수 있었다.
최만용 ( Choi Man-yong ),허광희 ( Heo Gwang-hee ),오세욱 ( Oh Se-wook ),조상래 ( Jo Sang-lae ) 한국구조물진단유지관리공학회 2000 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.4 No.2
Presently it becomes deeper underground excavation with rapid growth of industrial and gravitation of the population. By purpose of cut-off, impervious, and ground strengthening etc., grouting is used. But it is difficult to check impregnation effect because grouting operate in under ground. Up to this day, many methods of inspection have been designed, but these methods is not trusted. Therefore, the purpose of this study is to confirm to ground improvement effect by using temperature measurement. From the result, the more sensor adjoin impregnation tube, the more temperature increases.
최만용(Man Yong Choi) 한국조리학회 1999 한국조리학회지 Vol.5 No.1
The purpose of this was to solve conceptual problems of family restaurant through theoretical approach, to improve problems associated with managing restaurants, and to suggest plans for family restaurant chains. First of all, in order to improve the problems of franchising, the contents of contract were analyzed by showing the examples, and the methods were illustrated to analyze the overall contents. Hereafter, family restaurants will be categorized as either `Casual Dining` or `Theme Restaurant`, some of the nicknames for family restaurant. However, the fundamental categories will be in accordance with the categories of NRA of the U.S.A. as `Family Chain Restaurant`, `Grill-Buffet Restaurant` and `Dinner House`. It is hoped that the future study categorize these three in more details. The problems of restaurant management were considered to be concerned with the owner and the managerial problems. As a way to overcome the problems associated with restaurant chain concept, the importance of manual and food & beverage production, the analysis on different methods of store development, the characteristics of manual, the interested items when filling-out, and the methods were presented. The basic systems of commissary food service were introduced and their effects were presented as well in this study. The stages of store development and the models of expansion were presented for an analysis. The main focus of this study was to grasp the flow of organizational and store expansion by analyzing on-site stores and headquarters office hence find out the reason why the current portion of family restaurant is decreasing and not increasing among dining out industry. Therefore, it has brought a great opportunity to seize the problems of structual systems of family restaurant. A family restaurant is no longer perceived as an ordinary restaurant, yet it represents a whole new cultural environment due to the unique characteristics of family restaurant such as its food culture, protocol, and various shapes and sizes. The researcher of this study extends his wish that the future study reinvestigates differently categorized family restaurant and gives much attention to a systematically independent research subject.
최만용 ( Choi Man-yong ),오세욱 ( Oh Se-wook ),허광희 ( Heo Gwang-hee ),박정학 ( Park Jeong-hak ) 한국구조물진단유지관리공학회 2000 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.4 No.1
This study deals with earth pressure acting on CIP wall and displacement of CEP wall with excavation. The primary purpose of this study analysis the earth pressure using displacement and strut axial force by the measured and calculated values with excavation step. Also, through the comparative analysis of measured axial forces with load cells and calculated earth pressure with principle virtual work, it is the purpose of this study to obtain the measurement analysis source that could solve problems for the process of the stage excavation. This paper compares measurement results with analysis results on the earth pressure and displacement of the wall and describes more exact earth pressure and the change of the wall displacement of deep excavation.
현수 시스템의 케이블 장력 측정을 위한 표준 실험 장치의 개발
최만용 ( Choi Man Yong ),박해원 ( Park Hae Won ),이규 ( Lee Giu ),장선재 ( Jang Sun Jae ),이승석 ( Lee Seung Seok ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.1
현수시스템에서 케이블의 장력은 구조물의 신뢰성을 확인할 수 있는 매우 중요한 요인이다. 본 논문에서는 현수시스템에서 케이블의 정확한 장력 값을 측정하여 그 값의 신뢰성을 확인하고 실제 현수 시스템에 적용할 수 있도록 하기 위해 케이블의 장력을 측정 할 수 있는 표준 실험 장치 개발에 관한 연구를 수행하였다. 표준 실험 장치를 직접 설계 제작하였으며 시험편을 제작 실험을 수행하였다. 실험을 통해 케이블의 장력 값을 측정할 수 있으며 실제 현수시스템에서 케이블 장력측정에 적용 할 수 있는 표준 실험 장치를 개발하고자 하였다. This paper describes a new tension measurement system of suspension cable. The suspension cables play an important role in long-span cable-supported bridges, of which the reliability assessment has today been a major topic all around the world. Tension data of a suspension cable in mechanical design and selection of a cable in the construction of a structure helps an engineer and researcher. However, it is difficult to supply the repeatability and the reliability of measurement result in previous technique-vibration acceleration measurement system, load cell technique. In this paper, the tension measurement system of suspension cable and the specimen design for accurate measurement are proposed and the measurement results are described.