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하이브리드 중간층 지진 격리 시스템과 빌딩 구조물의 동시 최적화
강주원,김현수 한국공간구조학회 2019 한국공간구조학회지 Vol.19 No.3
A hybrid mid-story seismic isolation system with a smart damper has been proposed to mitigate seismic responses of tall buildings. Based on previous research, a hybrid mid-story seismic isolation system can provide effective control performance for reduction of seismic responses of tall buildings. Structural design of the hybrid mid-story seismic isolation system is generally performed after completion of structural design of a building structure. This design concept is called as an iterative design which is a general design process for structures and control devices. In the iterative design process, optimal design solution for the structure and control system is changed at each design stage. To solve this problem, the integrated optimal design method for the hybrid mid-story seismic isolation system and building structure was proposed in this study. An existing building with mid-story isolation system, i.e. Shiodome Sumitomo Building, was selected as an example structure for more realistic study. The hybrid mid-story isolation system in this study was composed of MR (magnetorheological) dampers. The stiffnessess and damping coefficients of the example building, maximum capacity of MR damper, and stiffness of isolation bearing were simultaneously optimized. Multi-objective genetic optimization method was employed for the simultaneous optimization of the example structure and the mid-story seismic isolation system. The optimization results show that the simultaneous optimization method can provide better control performance than the passive mid-story isolation system with reduction of structural materials.
등가플레이트 요소를 이용한 일방향 중공슬래브의 동적해석에 관한 연구
강주원,임준호,채승훈,김기철,석근영,Kang, Joo-Won,Lim, Jun-Ho,Chae, Seoung-Hun,Kim, Gee-Cheol,Seok, Keun-Young 한국전산구조공학회 2012 한국전산구조공학회논문집 Vol.25 No.5
중공슬래브 시스템은 슬래브 두께가 증가해도 자중은 크게 증가하지 않으면서 일반슬래브에 비해서 휨강성이 크게 저하되지 않는 장점이 있다. 그러나 이러한 장스팬 구조의 경우 바닥판 진동의 증가에 의한 사용성 문제가 발생할 수 있고, 특히 중공슬래브의 경우 기존의 구조시스템과 동적특성이 상이하다. 따라서 진동에 대한 중공슬래브의 안전성 및 사용성 검토가 요구되고 있으며, 이를 위한 실용적인 정밀해석이 필요하다. 본 연구에서는 효율적인 고유치 해석을 위하여 일방향 중공슬래브의 동적특성을 비교적 정확하게 나타낼 수 있는 등가의 플레이트 모델을 사용하였다. 결론적으로 등가플레이트 모델이 일방향 중공슬래브의 동적특정을 비교적 정확하게 나타나는 것으로 나타났다. Considering that the weight of a hollow slab system is not increased with an incremental increase in its thickness, and that the flexural stiffness of a hollow slab is not significantly lower than that of a general slab, there has been a growing need for hollow slab system, because long span structures are in great demand. In a long span structure, the problem of vibration of floor slabs frequently occurs, and the dynamic characteristics of a hollow slab system are quite different from the conventional floor system. It is required to investigate the safety and the serviceability of hollow slab. Therefore, there exists a necessity for accurate vibration analysis. Hollow slab should be modeled by refined mesh for accurate vibration analysis. For the efficiency of the Eigenvalue Analysis, an equivalent plate slab model when can relatively precisely represent the dynamic behavior of a one-way hollow slab system is used. In conclusion, equivalent plate models relatively precisely presented the dynamic characteristics of one-way hollows.
폭발 하중을 받는 프리캐스트 프리스트레스트 콘크리트 패널의 거동 평가
강주원,조은선,김민숙,이영학 한국공간구조학회 2015 한국공간구조학회지 Vol.15 No.1
The purpose of this study is to establish and examine the analytical methods based on FEA to predict the behavior of the precast prestressed concrete panels under blast loading. The precast prestressed concrete structures are on the rise, but there is little research in this regard explosion. In this paper, we set the variable to the three models. TNT 500 kg was an explosion in the standoff-distance 3m. In conclusion, the precast models damage was concentrated in the bonded portion. The concrete panels after an explosion occurred continuously deformed. But the including prestressed panels deformation occurs only at the beginning of the explosion were able to see the results.
일반역행렬을 이용한 케이블 돔 형 구조물의 자기평형 응력 모드 해석방법
강주원,김재열 대한건축학회 2006 大韓建築學會論文集 : 構造系 Vol.22 No.10
This paper deals with an analytical method of cable dome type structures consisted with cables and struts which is a type of lightweight structural systems suitable for covering large column-free space. Cable dome derives its initial stiffness from appropriate combination of initial tension or compression introduced into the system. For the design of this type of structure, a special step to determine the self-equilibrium stress mode is necessary. In this paper, a simple method based on the use of generalized inverse will be described. The ultimate aim of the paper is to introduce a tool with which various shapes of cable dome structures could be analyzed for design purpose.