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저자 : 박호영 ( Park Ho-young ) , 이경민 ( Lee Gyeong-min ) , 한명환 ( Han Myoung-hwan ) , 김시준 ( Kim Sijun )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 8-13 (6 pages)
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저자 : 박희원 ( Park Heewon ) , 유바라지나타라잔 ( Yuvaraj Natarajan ) , 김법렬 ( Kim Bubryur )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 14-18 (5 pages)
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저자 : 최나영 ( Choi Na-young ) , 김현수 ( Kim Hyun-su ) , 강주원 ( Kang Joo-won )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 27-34 (8 pages)
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Spatial structure does not have columns and walls installed inside, so they have a large space. There are upper structure and substructure supporting them. The response of seismic loads to the upper structure may be increased or decreased due to the effects of the substructure. Therefore, in this study, the seismic response of the upper structure and the floor response spectrum of the substructure were compared and analyzed according to the height of the substructure in the spatial structure where the LRB was installed. As a result, the possibility of amplification of response was confirmed as seismic waves passed though the substructure, which is likely to increase the response of the upper structures.
저자 : 김호수 ( Kim Ho-soo ) , 이하나 ( Lee Ha-na )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 35-44 (10 pages)
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Recently, the occurrence frequency of earthquake has increased in Korea, and many cultural assets have been damaged. Cheomseongdae is a valuable cultural assets that must be preserved historically and culturally. But, the masonry structure such as Chemseongdae is vulnerable to lateral forces. Therefore, in this study, structural modeling and dynamic analysis are performed to reflect the ground state and structural form of Cheomseongdae. Also, discrete element analysis technique is applied and dynamic behavior characteristics are analyzed according to earthquake load. For this purpose, displacements and stresses according to locations are reviewed and then swelling and distortion are analyzed.
저자 : 김다영 ( Kim Da-young ) , 유정한 ( Yoo Jung-han )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 45-52 (8 pages)
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The purpose of the paper is to introduce a system that reduces the occurrence of weak-story in the event of earthquake. Weak-story concentrates deformation on the story and causes all member to collapse before the capacity of all member is reached. This paper introduces Strong-Back system (SB) to protect weak story. SB is a hybrid of zipper frame, tied eccentrically braced frame, and elastic truss system and it is divided into elastic and inelastic areas. Elastic areas prevent the generation of weak story by distributing energy, and inelastic areas dissipate energy through buckling or yielding. In this paper, the seismic performance is evaluated by comparing the four type braced frame with SB through push-over analysis. The four criteria are compared from the base shear, the ductility capacity, the column failure order, and the quantity of brace. As a result, SB proved to have sufficient performance to protect the weak-story.
저자 : 박금성 ( Park Keum-sung ) , 이상섭 ( Lee Sang-sup ) , 곽명근 ( Kwak Myong-keun )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 53-60 (8 pages)
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In this study, an experimental study was carried out to evaluate the bond shear performance according to the shear connector between the glue-laminated timber and steel interface. Ten block shear specimens were fabricated according to the configuration of the adhesive surface of wood and steel. In addition, four test specimens were produced according to the main variable shape of the wood-concrete shear connector. As a result of the block shear test, the shear strength of the steel-wood adhesive is shown to have a shear performance greater than the wood-wood shear strength. As a result of the push-out test according to the shape of the shear connector, the shear strength increased linearly with the attachment area. The complete composite behavior between the glued-laminated timber and the steel can be secured.
저자 : 김민숙 ( Kim Min Sook ) , 정은호 ( Jeong Eun Ho ) , 노경민 ( Ro Kyong Min ) , 이영학 ( Lee Young Hak )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 61-68 (8 pages)
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This paper discusses the influence of transverse reinforcement spacing and support width of concrete wide beam on shear performance. In order to evaluate the shear performance, a total of thirteen specimens were constructed and tested. The transverse reinforcement spacing, the number of legs and support width were considered as variables. From the test results, the shear strength equation of concrete wide beam is proposed for prediction of shear strength of concrete wide beam to consider the transverse reinforcement spacing and support width. It is shown that the proposed equation is able to predict shear strength reasonably well for concrete wide beam.
저자 : 하준홍 ( Ha Junhong ) , 손수덕 ( Shon Sudeok ) , 이승재 ( Lee Seungjae ) , 황경주 ( Hwang Kyung-ju )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 69-76 (8 pages)
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A stadium roof that uses the pin-jointed spatial truss system has to be designed by taking into account the unstable phenomenon due to the geometrical non-linearity of the long span. This phenomenon is mainly studied in the single-free-node model (SFN) or double-free-node model (DFN). Unlike the simple SFN model, the more complex DFN model has a higher order of characteristic equations, making analysis of the system's stability complicated. However, various symmetric conditions can allow limited analysis of these problems. Thus, this research looks at the stability of the DFN model which is assumed to be symmetric in shape, and its load and equilibrium state. Its governing system is expressed by nonlinear differential equations to show the double Duffing effect. To investigate the dynamic behavior and characteristics, we normalize the system of the model in terms of space and time. The equilibrium points of the system unloaded or symmetrically loaded are calculated exactly. Furthermore, the stability of these points via the roots of the characteristic equation of a Jacobian matrix are classified.
저자 : 문교영 ( Moon Kyo Young ) , 김시윤 ( Kim Siyun ) , 김승직 ( Kim Sung Jig ) , 이기학 ( Lee Kihak )
발행기관 : 한국공간구조학회
간행물 :
한국공간구조학회지
19권 4호
발행 연도 : 2019
페이지 : pp. 77-84 (8 pages)
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This study introduces a newly developed PC non-bearing wall system to prevent the damage of RC wall-type apartments that have been heavily damaged by the 2017 Pohang Earthquake. In order to evaluate the performance of the developed PC non-bearing wall system, a static cyclic test is conducted. The prototype of test specimen is from the RC wall-type apartment which has been severely damaged by the 2017 Pohang Earthquake. The specimen with the conventional non-bearing wall system showed the similar damage of RC wall type apartment suffered from the Pohang Earthquake. In case of the specimen with the developed PC non-bearing wall system, cracks and damages were not transmitted between the walls due to the seismic slit and there were almost no cracks in the non-bearing walls. Therefore, the proposed non-bearing wall system, separated from the structural walls, could prevent spreading cracks to bearing walls and make it possible to effectively control damage due to earthquake loads.
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