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캄보디아 앙코르 유적 석조건축물의 손상부재 보강사례 연구
김호수 청주대학교 산업과학연구소 2020 産業科學硏究 Vol.38 No.1
The Angkor remains are main heritage of the Khmer empire from the 9th to 15th centuries. The Angkor remains consist of about 200 temples, and there are a variety of stone structures. However, the Angkor remains suffer from various damages due to high temperature and humidity of the southeast asian climate. Accordingly, this study intends to analyze construction type of Angkor remains and to analyze reinforcement cases of damaged members for preservation of stone structures.
김호수,이찬주,김소은,지창윤,김성태,김진석,김상용,곽상수 한국식물생명공학회 2018 JOURNAL OF PLANT BIOTECHNOLOGY Vol.45 No.3
Sweetpotato [Ipomoea batatas (L.) Lam] represents an attractive starch crop that can be used to facilitate solving global food and environmental problems in the 21st century. It can be used as industrial bioreactors to produce various high value-added materials, including bio-ethanol, functional feed, antioxidants, as well as food resources. The non-profit Center for Science in the Public Interest (CSPI) announced sweetpotato as one of the ten ‘super foods’ for better health, since it contains high levels of low molecular weight antioxidants such as vitamin-C, vitamin-E and carotenoids, as well as dietary fiber and potassium. The United States Department of Agriculture (USDA) also reported that sweetpotato is the best bioenergy crop among starch crops on marginal lands, that does not affect food security. The Food and Agriculture Organization (FAO) estimated that world population in 2050 will be 9.7 billion, and require approximately 1.7 times more food than today. In this respect, sweetpotato will be a solution to solving problems such as food, energy, health, and environment facing the globe in the 21st century. In this paper, the current status of resources, and cultivation of sweetpotato in the world was first described. Development of a new northern route of the sweetpotato and its prior tasks of large scale cultivation of sweetpotato, were also described in terms of global food security, and production of high-value added biomaterials.
김호수,남경연,이성수,장용호 청주대학교 산업과학연구소 2008 産業科學硏究 Vol.25 No.2
The use of system support is gradually increased in the construction field of large and tall buildings. Many engineers have few concerns about the structural safety of formwork system such as supports and forms. So, some serious failures occur occasionally during the construction works. Therefore, this study presents the optimal fabrication module through the safety evaluation of system support. To this end, we consider the many modules of system support by the combinations of unit members. Buckling analysis and structural safety evaluation are performed based on the various design variables. Finally, the optimal fabrication module lists through the weight comparison of various modules are presented.
김호수,유준,김소연,김진완 한국공간구조학회 2017 한국공간구조학회지 Vol.17 No.2
In Korea, the occurrence frequency of earthquakes has recently increased, compared with the past. So, the various damages for cultural properties due to earthquake can be expected, and especially fortress structure is vulnerable to earthquake. Therefore, the resonable seismic characteristics evaluation is required to secure the safety for fortress structure with the various construction and configuration types. Also, we should consider the various applied load conditions as design variables. To this end, this study classifies fortress structures according to the construction and configuration types, and then applies the discrete element method to model and analyze fortress structures. Finally, the seismic characteristics is evaluated through slip condition due to the analysis results considering the various design variables.
김호수,이한주 청주대학교 산업과학연구소 2007 産業科學硏究 Vol.24 No.2
In this study, the effective method to control quantitatively lateral drift of RC frame structures is prestlted. Also, lateral drift constraints are established by introducing approximation concept that preserves the generality of the mathematical programming and can efficiently solve large scale problems. Besides, the relationships of sectional properties are established to reduce the never of design variables. Specifically, the methodology of dynamic displacemtlt sensitivity analysis is developed to formulate the approximated lateral displacement constraints.
민감도해석을 이용한 전단벽 아웃리거 시스템의 횡변위 제어 방안
김호수,이한주 청주대학교 산업과학연구소 2006 産業科學硏究 Vol.24 No.1
This study presents an effective sensitivity analysis technique to evaluate the efficiency of lateral drift control for tall shear wall outrigger system subject to horizontal loads. To this end, isoparametric plane stress element with rotational stiffness is used for shear wall element ands stiffness gradient is calculated. Also, the approximation concept to solve effectively the large scaled problems, member grouping technique and resizing technique are considered. To verify the effectiveness and usefulness of this technique, three types of 50 story models with core and outrigger systems are presented.
김호수,홍석일 청주대학교 산업과학연구소 2006 産業科學硏究 Vol.23 No.2
As the stone pagoda on the Miruksa temple site in one of the oldest and grandest stone pagodas which remain in Korea today, this stone pagoda has (a high value as architectural history. However, this stone pagoda has) remained only six stories of the northeastern part, because this stone pagoda was collapsed at past. Therefore, it is important to know original structure and form of this stone pagoda. Hypotheses about collapse cause of this stone pagoda are presented as four cases; collapse by earthquake, collapse by fragility of ground, collapse by durability reduction, and collapse by lightning. On the basis of these four collapse hypotheses in this study , we evaluate collapse causes of this stone pagoda through the structural analysis using discrete element method
런너의 설치간격을 고려한 스터드골조형 벽체패널의 구조성능에 관한 연구
김호수 청주대학교 산업과학연구소 2006 産業科學硏究 Vol.23 No.2
This study presents the wall panels framed by the vertical members called studs and the horizontal members called runners using the carbon steel square. Load bearing capacity according to the axial and shear loads is evaluated to apply in the housing system with 3~5 stories through the variations of intervals for the runners. Accordingly, this study evaluates axial load and shear load capacity of unit wall through the experimental study according to the several experimental variables to verify the structural performance of the framed wall system and provides the practical application performance of this wall panel system.
김호수,한병호,이하나,이종구 청주대학교 산업과학연구소 2013 産業科學硏究 Vol.31 No.1
This study presents the module design method of solar tracker support system. To this end, we consider the various design loads and design variables, and then perform the structural modelling and analysis. Through the analysis results, this study provides the several alternatives for solar tracker support system.
김호수 청주대학교 2010 産業科學硏究 Vol.28 No.1
It is very difficult to analyze reasonably the masonry stone pagoda structure through the analysis program because of the discontinuum characteristics. So, we present the efficient load distribution method to solve the above problems and to check the vertical load transfer mechanism. Also, we evaluate the load transfer mechanism by comparing the analysis results between the load distribution method and ADINA analysis program through the practical stone pagoda structural model.