• Title, Summary, Keyword: 강구조물의 에너지소산능력

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Influence of the Random Yield Strength Distribution on the Behaviour Factor of Steel Structures (임의항복강도의 분포가 강구조물의 거동계수에 미치는 영향)

  • Kook, Seung Kyu
    • Journal of Korean Society of Steel Construction
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    • v.9 no.2
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    • pp.229-235
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    • 1997
  • In order to check the influence of the randomness in yield strengths on the energy dissipation capacity of steel structures, behaviour factors applied for the "Response Spectrum Method" and their distributions are determined in this study with 7 steel framed models. Also 4 artificial accelerograms simulated with a given spectrum are applied to check the influence of the randomness in seismic action on the behviour factor. To execute numerous time-step calculations for the investigation a time-step analysis method is developed and applied after the reliability estimation to determine the action effects.

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Design of a Steel Structural Building Using Double Split Tee Connections without Shear Tabs (전단탭이 없는 상·하부 스플릿 티 접합부를 적용한 강구조물의 설계)

  • Yang, Jae Guen;Kim, Yong Boem
    • Journal of Korean Society of Steel Construction
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    • v.28 no.2
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    • pp.85-96
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    • 2016
  • Double split tee connection has various strength, stiffness, and energy dissipation capacity according to changes of thickness of T-stub flange and gauge distance, number, and diameter of high-strength bolt. If the double split tee connection is applied to a low- or medium-rise steel structure, a shear tab can't be applied for supporting shear force because of geometrical limitation. So it is required to propose details of improved double split tee connection to support shear force as well as flexural force. This research was performed to see if enough rotational stiffness is found when the double split tee connection without shear tab which was obtained through analytic and experimental researches by Yang et al. is applied to a low- or medium-rise steel structure. Also, it was seen if the low- or medium-rise steel structure having double split tee connection without shear tab has safe structural behavior, as well as material saving effect.

Experimental Evaluation of New Seismic Connections between Rectangular Steel Tube Column and H-shaped Beam (각형강관 기둥-H형강 보 신형상 내진접합부의 실험적 평가)

  • Jin, Jooho;Kim, DooHwan;Kim, Hyunsook;Shin, Jinwon;Park, Kooyun;Lee, Kyungkoo
    • Journal of Korean Society of Steel Construction
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    • v.30 no.2
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    • pp.77-85
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    • 2018
  • A through diaphragm is often used to ensure their stiffness for moment-resisting connections using rectangular steel-tube column and H-shaped beam. The through-diaphragm connections, however, have some difficulties for their applicabilities to the field due to the complexity of the fabrication and construction processes. This study thus proposes a new modular system of steel structures assembled only using bolts without welding, by bringing a connection module composed of rectangular steel-tube column, H-shaped beam and oneway bolt onto the site. An experimental study to evaluate the seismic performance of the proposed connection details based on the new modular system is then conducted. The length and type of the inner reinforcement plate are considered as the primary design parameters, and the strength, stiffness, ductility and energy dissipation capability of the new connections are experimentally analyzed by comparison to those of conventional through diaphragm connections.