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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.
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/>
김호수(Kim Ho-Soo),차근창(Cha Geun-Chang),정성진(Jung Sung-Jin),김왕직(Kim Wang-Jik),배병선(Bae Byung-Sun),김덕문(Kim Derk-Moon) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.9
The construction types of the arched stone bridges show generally the semi-circled shapes. But, the several types have been constructed by considering the height-width ratios according to the installation locations. The arched stone bridges with the various arched types have the different load transfer mechanism and show the different structural behavior according to the axis variation. Therefore, this study analyzes the mechanical behavior characteristics according to the various arched types and applies the discrete element method for the modelling and analysis of discontinuum structure.
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),홍석일(Hong Souk-Il),신효범(Shin Hyo-Bum) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.8
The deformation and crack of stone pagoda are caused by the specific changes of ground characteristics such as the slope and depth difference of ground subsidence in weak zone. This phenomenon influences the safety and long-term conservation of stone pagoda structure. Therefore, we evaluate the structural influence of stone pagoda structure by carrying out the structural modeling and analysis according to the various ground characteristics models using the discontinuum analytical method.
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.
김호수(Kim Ho-Soo),홍석일(Hong Souk-Il),신효범(Shin Hyo-Bum) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.4
Stone pagoda structure is largely classified into three parts such as top, body and stylobate. Specifically, the reduction of stylobate's bearing capacity has great influence on the structural safety of stone pagoda structure because the stylobate is performing the role of foundation. Therefore, this study evaluates the structural safety of stone pagoda according to the layout types of stylobate's jeoksim. These layout types are classified into stacking form, column form+stacking form and rod-like rock column form based on the construction types of stylobate. Also, the soil loss phenomenon of stylobate is applied for the safety analysis of the structure. For the structural modeling and analysis of stylobate part, discontinuum models and discrete element analysis method are considered.
위상 및 크기 최적화를 고려한 대공간 철골트러스 구조물의 형상결정 방안
김호수(Kim Ho-Soo),양명규(Yang Myung-Kyu),박영신(Park Young-Sin),이한주(Lee Han-Joo) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.2
It is very important to find out the initial shape for the efficient design of spatial steel truss structure. Also, the reasonable optimization techniques are required in order to perform the optimal design of the structure. Traditionally, the structural design process starts with an initial conceptual model which is inspired by the designer's intuition and previous experiences. So, this study is to provide the information about the optimum layout of structure through the integrated process for the initial topology and final size optimization. To this end, this study finds out the initial optimum layout of spatial steel truss structure by using the topology optimization for unit structure model, and then decides the final optimal shape by using the size optimization for the total structure combined with several unit models.