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저발열배합 및 분할타설을 고려한 매스콘크리트의 수화열 해석
김호수(Kim Ho-Soo),한민철(Han Min-Cheol),김지연(Kim Ji-Yeon),한승백(Han Seung-Baek) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.1
As the scale of structure becomes larger, the temperature crack of massive concrete structure is caused by the phenomenon which the mass concrete volume is restricted in the inside or outside part due to the temperature variations induced by the hydration heat of cement. So, we should prepare the method to reduce reasonably the hydration heat for the control of temperature crack. Therefore, this study presents the hydration heat analysis to verify the control effect of temperature crack when we consider the different placement layers and block placement according to the different concrete mixtures. To this end, we consider the low heat mixture concrete and block placement effect. This is, we place the low heat mixture concrete in the lower layer by using the admixture to reduce the hydration heat, and then place the general concrete or early strength type concrete in the upper layer. Also, we evaluate the control results of the temperature crack by comparing the distributions of temperature and stress in the middle and surface parts.
스페이스 프레임 돔 구조물의 형태생성 및 강성최적화 이력에 따른 구조성능 분석
김호수(Kim, Ho-Soo),박영신(Park, Young-Sin),이민호(Lee, Min-Ho),오주영(Oh, Ju-Young) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.1
Space frame structures have the different shapes according to generation principle and member connection method. Thus, space frame dome structures need the optimal shape design method according to requirements. The optimal design method for space frame structures generally adopts the size and shape optimization method that aims at optimal weight. This optimization method shows the results which consider the minimum weight with appropriate shapes from stress and displacement constraints. But, it is not easy to secure the maximum stiffness of structure because the optimal weight design is established by the given constraint conditions. Therefore, this study finds out the optimal structural shape that has the maximum stiffness through the stiffness optimization method. To this end, we first select the various types of space frame dome structures and generate the dome structure shapes using VBA(Visual Basic for Application). Also, we consider the various load conditions and perform the optimal stiffness design for the performance comparison of dome structures. In this way, the total weights and displacements are evaluated during the stiffness optimization process according to the height variations of dome structures.
수학적 계획법을 이용한 복층 볼트시스템의 구조최적화 방안
김호수(Kim Ho-Soo),박영신(Park Young-Sin),이한주(Lee Han-Joo) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.10
This study presents the shape decision and structural optimization techniques for the double-layer vault system. Double-layer vault system takes less weight than general space frame structures and is widely used with the advantages of the lightweight structure, mass production and quick construction. But, the initial design of double-layer vault system depends on the structural engineer's experience and the repeated trial and error. Therefore, the optimization of double-layer vault system by controling displacement and stress needs a method to determine the optimal shape. First, this study develops the shape decision method for modeling double-layer vault system and presents the size and shape optimization techniques that can select main design valuables according to the radius of curvature, lattice division and height. Also, the automated computation of joint coordinates and numbering technique, and automatic input of the load are considered for the shape modeling. Finally, the optimal design and algorithm using sensitivity analysis technique through mathematical programming method are verified through the analysis example.
김호수,김정환,Kim, Ho-Soo,Kim, Jung-Hwan 한국공간구조학회 2015 한국공간구조학회지 Vol.15 No.3
Cheomseongdae is the masonry stone structure with the cultural and historical values. But, this structure has the various damages such as cracks, gaps, slope variations and ground subsidence. So, the interests for the safety security in the structural parts have been increased. Therefore, this study performs the structural modelling which considers the several damage cases, and then evaluates the structural behavior characteristics through the discrete element analysis. Especially, this study checks the swelling and displacement gap of the whole structure and the separation between the neighboring members.
김호수(Kim, Ho-Soo),이종구(Lee, Jong-Ku),정성진(Jung, Sung-Jin),김왕직(Kim, Wang-Jik),배병선(Bae, Byung-Sun),김덕문(Kim, Derk-Moon) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.8
The seokbinggo structures have the various construction types with the several configuration members and suffers the upper earth pressure. So, the seokbinggo structures show the different structural characteristics and the various load transfer mechanism. Especially, this study presents the discrete element method for the discontinuous elements and joints according to the discontinuum behavior characteristics in the masonry stone structures. Therefore, this study selects the representative seokbinggo structure and then considers the various design variables according to the construction types. Finally, this study analyzes the structural behavior characteristics of seokbinggo structures through the discontinuum structural modelling and analysis.
김호수(Kim Ho-Soo) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.5
This study analyzes the structural characteristics and load transfer mechanism according to the construction types of stylobate and body part of the typical traditional stone pagoda structure. To this end, the construction and structural types are compared between two typical stone pagodas in the Goseon-sa and Jeongnim-sa temple sites. Also, the discontinuum structural modelling and discrete element analysis are performed in order to analyze the structural behaviors of stylobate and body part, and the resonable constitutive models of block and joint are considered. Especially, the structural characteristics and safety according to the construction types of stone pagodas are verified through the comparisons of stress and displacement distributions between the discrete elements of stylobate and body part.
석탑문화재 손상 유형 및 영향 요인에 따른 손상도 평가
김호수,홍석일,전건우,김덕문,박찬민,Kim, Ho-Soo,Hong, Souk-il,Jeon, Gun-Woo,Kim, Derk-Moon,Park, Chan-Min 한국공간구조학회 2018 한국공간구조학회지 Vol.18 No.2
Stone pagoda structures have continued to be aged due to the combination of various damage factors. However, some studies on nonstructural damage have been carried out, but assessment studies on structural damage have not been done in various ways. Therefore, in this study, structural and nonstructural influencing factors according to the damage types are classified and the damage assessment according to the structural influencing factors affecting the behavior of the stone pagoda structure is performed. In addition, the damage rating classification criteria for each type of structural damages or damage locations are presented, and the damage index is calculated by providing the criteria for the classification of damage according to the degree of damage to which the damage is caused. Therefore, this study can evaluate quantitatively the damage status of stone pagoda structures.
스페이스 프레임 돔 구조물의 최적화를 위한 형상생성 방안
김호수(Kim Ho-Soo),박영신(Park Young-Sin),양명규(Yang Myung-Kyu),이한주(Lee Han-Joo) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.12
Space frame system is applied to various parts of large spatial dome structures. Especially, space frame dome structure is composed of traditional shape or the combinations of various shapes and new design. In this case, the big difference in the total weight and behavior of structures is shown, based on the selection of space frame dome structure and the difference of member connection, even if they have same size and height. For this reason, it is not easy to decide the optimal shape in the design of this system. Therefore, this study presents the shape generation method and then try to develop the shape generation module. To this end, the node and member generation technique is formulated to consider the characteristics of shapes through the various example selection of space frame dome structure. Also, various example models are presented for efficiency evaluation of the shape generation technique and optimization results are compared through the application of optimization algorithm.
변위민감도 해석을 이용한 삼차원 고층철골조 구조물의 횡변위 제어에 관한 연구
김호수(Kim Ho-Soo),이한주(Lee Han-Joo) 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.9
This study presents an effective Stiffness-based optimal technique to control quantitatively lateral drift for 3-D steel frameworks subject to lateral loads To this end, the displacement sensitivity depending on behavior characteristics of 3-D steel frameworks is established Also, the approximation concept that can preserve the generality of the mathematical programing and can efficiently solve large scale problems is introduced Resizing sections in the stiffness-based optimal design are assumed to be uniformly varying in size and the technique of member grouping is considered for the improvement of construction efficiency Two types of 30-story frames are presented to Illustrate the features of the quantitative lateral drift control technique proposed in this study<br/>