• Title, Summary, Keyword: 철골 보-철근콘크리트 복합구조

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A Study on the Moment and Shear Resisting Performance of Steel Girder - R/C Column Connection (철골 보 - 철근콘크리트 기둥 접합부의 휨 및 전단 저항성능에 관한 연구)

  • Choi, Kwang Ho
    • Journal of Korean Society of Steel Construction
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    • v.12 no.4
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    • pp.429-436
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    • 2000
  • The composite system, which is consisted of the steel girder and reinforced concrete column has some advantages in the structural efficiency and the construction productivity by complementing the shortcomings between the two materials. This research is aimed at the development of the composite beam-column connection system by which the steel beam can be connected to the R/C column with smooth stress transfer. And, to ensure safety of this system, the tests of moment and shear resisting performance have been carried out for actual size specimen. From the test, the connection system has been preyed to take good resistance and stress transfer between steel girder and reinforced concrete column.

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Experimental Study on the Machenical Properties of Composite Beam Composed End Reinforced Concrete and Center Steel (RC-S 복합보의 역학적 특성에 관한 실험적 연구)

  • Kim, Cheol Hwan;Chae, Won Tak
    • Journal of Korean Society of Steel Construction
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    • v.14 no.5
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    • pp.675-682
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    • 2002
  • The beam of composite structure composed of the RC structure in the end part and steel structure in the central palt were investigated during cyclic loading, in order to evaluate strength, stiffness, and deformational capacity. The parameters used in this study include the amount of reinforced steel bar between the steel beam and RC structure and the existence of the sticking plate. Test results showed that all specimens had stabilized hysteresis loops. Likewise, the specimens with sticking plate had higher load-carrying capacity compared with the one without it. In addition, the stiffness of the composite structure was higher than the steel structure. All specimens also showed good rotational capacity.

Analytical Study on Strength Resistance of Steel Beams with Stiffened Ends by Reinforced Concrete -difference of behavior with fixing plate- (복합보의 내력성능에 관한 연구 -정착판의 설치에 의한 거동의 차이-)

  • Kim, Seong Eun
    • Journal of Korean Society of Steel Construction
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    • v.12 no.6
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    • pp.681-690
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    • 2000
  • Recently, a long span is often required for the spacious building. Therefore the increase of stiffness is necessary to prevent floor vibration and control deformation of the building under earthquake and wind loads. For this purpose, steel beams with stiffened ends by reinforced concrete are effective. To realize such an effective reinforcement method, the smoothening of bending and shear stress transmission at the boundaries between middle-part of the steel beam and both end-parts of the steel beam with stiffened ends by reinforced concrete is required. Therefore, the fixed plate was installed at the boundary with the view of transferring the stress smoothly. This paper evaluates the method of effective transmission of bending and shear stress through the numerical analysis that is based on advanced experimental tests.

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Bending Tests of H steel-Partial Concrete Incased Composite Beams (H형강-국부 콘크리트 합성보지 휨 실험)

  • Kim, Sung-Hoon;Kim, Dae-Kon
    • Journal of the Earthquake Engineering Society of Korea
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    • v.9 no.3
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    • pp.77-85
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    • 2005
  • After the collapse of the World Trade Center in september 11, 2001 and due to the frequent fire-caused damages of buildings during earthquake attacks, social concerns have been increased for the fire proof of the structural members of buildings. Recently, researches have been conducted to improve the fire resistance for building members not by the traditional ways but by utilizing the fire-resisting characteristics of reinforced concrete and structural characteristics of H-steel. In this paper, laboratory tests were conducted in room temperature to investigate the structural performance of the composite beams, which were developed to improve the fire resistance, comprising with concrete incasement between upper and lower flanges of H steel. From the experimental results, the displacement ductility factors of $6\~8$ were obtained. The difference of flexural behavior ol H steel-partial concrete incased composite beams with various composite details seems to be minor. The amount of longitudinal rebars is the most influential factor for the flexural strength of the composite beams. Therefore, if this type of composite beams are selected for designing a building located in moderate seismic lone, identical beam size could be used in several stories of the building.

Experimental Study on the Behavior of Hybrid Beam-Column Joints Consisted of Reinforced Concrete Column and Steel Beam (철근콘크리트 기둥 및 철골보로 구성된 복합구조의 접합분 거동에 관한 실험적 연구)

  • Choi, Keun-Do;You, Young-Chan;Lee, Li-Hyung
    • Journal of the Korea Concrete Institute
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    • v.15 no.2
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    • pp.297-304
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    • 2003
  • This paper presents the test results of RCS(Reinforced Concrete Steel) beam-column joint with various types of transverse reinforcements such as small-column-type transverse reinforcements, four-piece ㄱ-shape assembled hoops and four-piece ㄱ-shape welded hoops. Five interior beam-column joint specimens were tested to examine the seismic performance and the shear strengths. From the test results, it was found that all the specimens sustained their strength at large levels of story drift(${\theta}$=0.035) without significant loss of strength and stiffness. Therefore it was concluded that the seismic performance and shear strength of the proposed RCS joint are at least the same as those of the specimen with conventional reinforcing details. Also, the contribution of the outer panel to the shear strength of the joint should be evaluated by the compression strut mechanism rather than compression field mechanism.

An Experimental Study on Structural Performance of HRC Composite Beam according to types of Connection Plate with Stud Bolts (HRC 복합보의 연결플레이트 보강법에 따른 구조성능실험)

  • Lee, Soo-Kueon;Yang, Jae-Guen;Song, Chang-Seok;Jang, Eun-Young;Moon, Jun-Chul
    • Journal of Korean Society of Steel Construction
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    • v.23 no.3
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    • pp.377-384
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    • 2011
  • Recently, for the purpose of reducing work terms and improving performance for construction work, various methods in structure field were developed. This included the HRC system which is applicable to a typical structure (e.g., parking and office building). The HRC system introduced the Gerber Joint to raise structural efficiency and used connection plate to bolt HRC composite beam to H beam in the construction field. In this research, the experimental tests for six specimens, which were in the same field conditions, were conducted with several parameters such as the length and height of the connection plate and the number of stub bolts. The test result was compared with those made by current design codes for the deflection and strains of the main bar. Within the given load, the integration of concrete in beam and connection plate, welded with stud bolts, was verified.

Structural Performance of Hybrid Coupled Shear Wall System Considering Connection Details (접합부 상세에 따른 복합 병렬 전단벽 시스템의 구조 성능)

  • Park, Wan Shin;Yun, Hyun Do;Kim, Sun Woong;Jang, Young Il
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.16 no.3
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    • pp.128-137
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    • 2012
  • In high multistory buildings, hybrid coupled shear walls can provide an efficient structural system to resist horizontal force due to wind and seismic loads. Hybrid coupled shear walls are usually built over the whole height of the building and are laid out either as a series of walls coupled by steel beams with openings to accommodate doors, elevator walls, windows and corridors. In this paper, the behavior characteristics of hybrid coupled shear wall system considering connection details is examined through results of an experimental research program where 5 two-thirds scale specimens were tested under cyclic loading. Such connections details are typically employed in hybrid coupling wall system consisting of steel coupling beams and reinforced concrete shear wall. The test variables of this study are embedment length of steel coupling beam and wall thickness of concrete shear wall. The results and discussion presented in this paper provide fundamental data for seismic behavior of hybrid coupled shear wall systems.

A Study on Hybrid Wall System on Connection Type of Coupling Beam (커플링 보의 접합방식에 따른 복합 벽체 시스템에 관한 연구)

  • Yun, Hyun-Do;Park, Wan-Shin;Han, Byung-Chan;Yun, Yeo-Jin
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.7 no.4
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    • pp.201-208
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    • 2003
  • The Hybrid Wall System(HWS) building composed of center core reinforced concrete walls and exterior steel frame has open space around the center core walls. It is necessary to develop design methodologies for the HWS building that the coupled shear walls withstand the most of lateral load and expect the most energy dissipation at the coupling beams and at wall foots. Major factors considered in this paper are connection type of coupling beams and scale of story. The studies of the system are investigated in terms of shear force, overturning moment, maximum lateral displacement, story drift ratio, and dynamical characteristics under the action of vertical and lateral forces such as wind and seismic loads.