• Title/Summary/Keyword: Detail of connection

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Deformation Capacity of Steel Moment Connections with RHS Column (각형강관 기둥을 가진 철골모멘트 접합부의 변형능력)

  • Kim, Young-Ju;Oh, Sang-Hoon;Ryu, Hong-Sik
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 2006.03a
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    • pp.249-258
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    • 2006
  • In this paper, deformation capacity of steel moment connections with RHS column was investigated. Initially, non-linear finite element analysis of five bate steel beam models was conducted. The models were designed to have different detail at their beam-to-column connection, so that the flexural moment capacity was different respectively. Analysis results showed 4hat the moment transfer efficiency of the analytical model with RHS-column was poor when comparing to model with WF(Wide flnage)-column due to out-of-plane deformation of the RHS-column flange. The presence of scallop and thin plate of RHS column was also a reason of the decrease of moment transfer efficiency, which would result in a potential fracture of tile steel beam-to-column connections. Further test on beam-to-column connections with RHS column revealed that the moment transfer efficiency of a beam web decreased due to the out-of-plane deformation of column flange, which led to premature failure of the connection.

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A parametric investigation on the hysteretic behaviour of CFT column to steel beam connections

  • Esfandyary, R.;Razzaghi, M.S.;Eslami, A.
    • Structural Engineering and Mechanics
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    • v.55 no.1
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    • pp.205-228
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    • 2015
  • The results of a numerical investigation pertaining to the hysteretic behaviour of concrete filled steel tubular (CFT) column to I-beam connections are discussed in detail. Following the verification of the numerical results against the available experimental tests, the nonlinear finite element (FE) analysis was implemented to evaluate the effects of different parameters including the column axial load, beam lateral support, shape and arrangement of stiffeners, stiffness of T-stiffeners, and the number of shear stiffeners. Pursuing this objective, an external CFT column to beam connection, tested previously, was selected as the case-study. The lateral forces on the structure were simulated, albeit approximately, using an incremental cyclic loading reversal applied at the beam tip. The results were compared in terms of hysteretic load-displacement curves, stress distributions in connection, strength, rotation, and energy dissipation capacity. It was shown that external T-stiffeners combined with internal shear stiffeners play an important role in the hysteretic performance of CFT columns to I-beam connections.

Static behavior of novel RCS through-column-type joint: Experimental and numerical study

  • Nguyen, Xuan Huy;Le, Dang Dung;Nguyen, Quang-Huy
    • Steel and Composite Structures
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    • v.32 no.1
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    • pp.111-126
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    • 2019
  • This paper deals with experimental investigation and modeling of the static behavior of a novel RCS beam-column exterior joint. The studied joint detail is a through-column type in which an H steel profile totally embedded inside RC column is directly welded to the steel beam. The H steel profile was covered by two supplementary plates in the joint area in order to avoid the stirrups resisting shear in the joint area. Two full-scale through-column-type RCS joints were tested under static loading. The objectives of the tests were to examine the connection performance and to highlight the contribution of two supplementary plates on the shear resistance of the joint. A reliable nonlinear 3D finite element model was developed using ABAQUS software to predict the response and behavior of the studied RCS joint. An extensive parametric study was performed to investigate the influences of the stirrups, the encased profile length and supplementary plate length on the behavior of the studied RCS joint.

Cyclic Test of welding connections for Steel-Plate Concrete Column to H-shaped Steel Girders (강판 콘크리트(SC) 기둥과 H형강 보의 용접 접합부에 대한 반복 이력 실험)

  • Park, Ho Young;Kang, Cheol Kyu;Choi, Byong Jeong
    • Journal of the Earthquake Engineering Society of Korea
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    • v.18 no.1
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    • pp.63-71
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    • 2014
  • This study presents an experimental study of the structural behavior for steel plate-concrete column-to-steel girder connections. Experiments were carried out to investigate the moment-rotation characteristics, failure behavior and ultimate moment capacity of these connections. The results of this experimental study involving three welded moment-resisting connections subjected to cyclic loading are presented. The specimens were fabricated at full scale to evaluate their hysteretic behavior. A description of the test specimens, the details of the joint, the test system and the testing methods are described. The test results showed that the structural behavior of these composite connections was influenced by the connection details.

A Network Partitioning Using the Concept of Conection Index-Algorithm and Implementation (연결지수의 개념을 사용한 회로망분실-알고리즘 및 실시)

  • 박진섭;박송배
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.21 no.6
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    • pp.94-104
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    • 1984
  • Based on a new concept of connection index of a weighted graph, a new efficient houris tic algorithm of 0(v.e) for network partitioning is presented, where v and e are the number of nodes and edges, respectively. Experimental results show that our algorithm is very efficient and yields an optimal or near optimal solution for a number of partitioning problems tested. Some applications of the proposed algorithm are suggested and its computer implementation is described in detail.

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An Investigation into the Finite Element Modeling of Connections of Composited H-Beams and Concrete Filled S.H.S Columns Subjected to Compression (축력을 받는 충전콘크리트 각형강관과 콘크리트-H형강 합성보 접합부의 유한요소 모델링에 관한 연구)

  • 이종석;윤영조;김승현
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1996.10a
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    • pp.230-238
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    • 1996
  • Recently, square hollow section (S.H.S) is frequently used for column and H-section for beam of steel building structures. The connection between S.H.S column and H-beam is found to weaken the rotational restraint of the joint. Several types of detail to overcome the problem have been suggested for the connection between concrete filled S.H.S column and concrete composited H-bean In this paper, modelling technique to monitor the behavior of the connections is proposed. Then, Drucker-Prager yield criteria is introduced to simulate yield behavior of in-fill concrete while Von-Mises was used in earlier works. Gap-elements are also introduced to simulate the interaction between S.H.S columns and the in-fill concrete as in privious papers. axial forces are applied to S.H.S columns and made to vary in intensity and eccentricity.

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Finite element modeling of tubular truss bearings

  • Kozy, B.;Earls, C.J.
    • Steel and Composite Structures
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    • v.5 no.1
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    • pp.49-70
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    • 2005
  • This paper reports on finite element analysis techniques that may be applied to the study of circular hollow structural sections and related bearing connection geometries. Specifically, a connection detail involving curved steel saddle bearings and a Structural Tee (ST) connected directly to a large-diameter Hollow Structural Section (HSS) truss chord, near its open end, is considered. The modeling is carried out using experimentally verified techniques. It is determined that the primary mechanism of failure involves a flexural collapse of the HSS chord through plastification of the chord wall into a well-defined yield line mechanism; a limit state for which a shell-based finite element model is well-suited to capture. It is also found that classical metal plasticity material models may be somewhat limited in their applicability to steels in fabricated tubular members.

Several Issues Closely Related to Construction in the Structural Design of Wuhan Center

  • Jian, Zhou
    • International Journal of High-Rise Buildings
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    • v.11 no.3
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    • pp.189-196
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    • 2022
  • The practical difficulties of construction will impose many restrictions on the structural design, and the construction method can also provide unexpected ideas for solving design problems. Through the discussion of three issues closely related to construction in the structural design of Wuhan Center, this paper illustrates the importance of in-depth consideration of the construction situations in the structural design stage. The topics of "Connection between Embedded Steel Plates in Steel Plate Composite Shear Wall" and "Connection Joint between Outrigger Truss and Core Wall" are about how to facilitate on-site construction by simplifying and optimizing detail design. The topic of "Adjusting Internal Force Distribution by Optimizing Construction Sequence" is about how to make the construction process a tool for structural design.

Suitability Review on Development Plans of Offshore Wind Farm Based on National Wind Map and Geographic Information (국가바람지도 및 국가지리정보에 의한 해상풍력단지 개발계획의 적합성 검토)

  • Kim, Hyun-Goo;Hwang, Hyo-Jung;Song, Kyu-Bong;Hwang, Sun-Young;Yun, Jin-Ho
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.06a
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    • pp.534-535
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    • 2009
  • The objective of this research aims preliminary assessments of the proposed plans of offshore wind farm development based on the recently established national offshore wind map and suitability assessment system of offshore wind farm. Incheon Mueodo, Busan Dadaepo-Gadukdo, Sinangun Haeodo have been assessed considering geographic constraints such as water depth, offshore distance, national park, grid connection, and meteorological constraint such as wind power density and wind direction. According to the assessment, Mueodo plan has a weak point in grid connection and several geographic limitations are involved in Haeodo plan while Dadaepo-Gadukdo seems the most possible plan among the review cases. Because of limited assessment in this research, more detail and further consideration are necessary to make a decision of a feasibility project at proposed sites.

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Implementation of the Stand-Alone PV Generation System for the LED Road Sign (LED 교통 표지판용 독립형 태양광 발전 시스템의 구현)

  • Lee S. R.;Jeon C. H.;Shin Y. C.;Lee K. M.
    • Proceedings of the KIPE Conference
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    • 2003.11a
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    • pp.206-209
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    • 2003
  • This paper deals with stand-alone PV power generation system with charge and discharge controller for the LED road sign. Main power source of PV system are generally solar cell and battery. Therefore PV system can be classified into variable types in accordance with connection type between battery and solar sell. Mainly used on of them is direct connection type which has advantage such as simple structure and simple controller. To verify the proposed PV generation system for the LED road sign, the detail simulation and experiment results indicate that operating characteristics are verified by experiment with a laboratory prototype in this paper.

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