• Title/Summary/Keyword: 합성전단벽

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합성 전단벽에 대한 대각 압축 응력장 접근법

  • Lee, Eo-Jin;Hong, Sung-Gul
    • Proceedings of the Korea Concrete Institute Conference
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    • 2010.05a
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    • pp.5-6
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    • 2010
  • In this study, assuming that there is a diagonal uniaxial compression field in combination with triangular homogeneous stress fields in the cracked concrete wall and a tensile stress of a steel plate occurs in the perpendicular to the direction of the diagonal compression field, an ultimate shear strength of a slender composite shear wall is estimated.

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Shear Strength and Seismic Behavior of the Composite Shear Wall with the Steel Plate Embedded in the RC Wall (철판삽입 합성전단벽의 전단강도와 내진거동)

  • Chun, Young-Soo;Park, Ji-Young;Lee, Jong-Yoon
    • Land and Housing Review
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    • v.8 no.3
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    • pp.211-221
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    • 2017
  • This study proposed hybrid coupled shear wall in the steel plate insertion method, which is capable of reinforcing the shear strength of the entire wall without increasing wall thickness in the wall-slab apartment buildings. The proposed hybrid coupled shear wall was tested for its effectiveness, shear strength and seismic behavior in experiment. As a test result, the shear strength improvement by the proposed hybrid coupled shear was found effective. Integral-type of steel plate insertion was found more effective than separate-type steel plate insertion. In this case, if the stud enforcement method proposed in this study was used, the shear strength of hybrid coupled shear wall was recommended to calculate using the KBC2016 0709.4.1(3) method. The steel plate inserted in the proposed method was found to have no significant impact on the final fracture behavior and bending strength of hybrid coupled shear wall. The shear strength at the final destruction of the wall was merely about 1/50 of the entire design shear strength. Thus, it is deemed that the wall was over excessively designed regarding the shear force in the existing design method. This finding indicates further study on wall designing to ensure effective and economic designing based on appropriate strength estimation under the destruction mechanism.

Analytical Study for Design of Shape and Arrangement Spacing of Studs in Steel Plate Concrete(SC) Wall subjected to Shear and Axial Forces (전단력과 축하중을 받는 강판 콘크리트(SC) 벽체에서 스터드의 형상과 배치간격의 설계를 위한 해석적 연구)

  • Cho, Sung-Gook;Lim, Jin-Sun;Jeong, Young-Do;Yi, Seong-Tae
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.18 no.4
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    • pp.67-76
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    • 2014
  • In this study, the behavior of Steel Plate Concrete (SC) walls subjected to shear and axial forces to investigate the effects of shape and arrangement spacing of studs on the design of SC walls was analytically reviewed. For this purpose, 9 cases of finite element analyses considering the different shape and spacing of studs in SC wall were performed. The results showed that the steel plate was yielded at the lower load than the second yielding shear force of the design skeleton curve when the spacing of stud is excessively far from each other. It is also found that the shape of the stud did not affect the shear behavior of SC wall but, the spacing influenced to its composite action. In this study, it was also proven that the inclined shaped stud resists more effectively to the bucking load than the general shaped stud in SC wall.

Analytical Study for Performance Improvement of Studs for Steel Plate Concrete(SC) Walls subjected to Combined Loads (조합하중을 받는 강판 콘크리트(SC) 벽체에서 스터드의 성능개선을 위한 해석적 연구)

  • Yi, Seong-Tae
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.19 no.2
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    • pp.108-116
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    • 2015
  • This study analytically reviewed the behavior of Steel Plate Concrete(SC) walls subjected to combined loads of axial force, flexural moment, and shear force to investigate the effects of shape and arrangement spacing of studs on the behavior of SC walls. To perform it, 9 cases of finite element analyses considering the different shape and spacing of studs in SC wall were carried out. The results showed that, for SC walls combined steel plate and concrete according to the Design Code, the compressive strength is higher than the tensile strength. Compared results from the finite element analyses of SC walls subjected to combined loads with Design Code showed that all cases were higher than the design strength. For KEPIC SNG, the moment and shear force were not influenced by the axial force of 0.1 to 0.2 times axial strength, however, from the analyses, it was found that the values were decreased as the axial force is increased.

Beam Transition Elements for Finite Element Analysis of Transition Regions of Coupled Wall Structures (병렬전단벽 구조물의 변화부분의 유한요소해석을 위한 보-변환요소의 개발)

  • 김호수
    • Computational Structural Engineering
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    • v.8 no.2
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    • pp.85-93
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    • 1995
  • This study presents the formulation of beam transition elements and transition zone elements for the effective finite element analysis of the transition regions of coupled wall structures. Beam transition element can be described as the quasi beam element which is replaced by an equivalent plane stress element, keeping equally, the basic behavior of beam element, based on the kinematic and force constraints between beam and wall element. These beam transition elements solve the incompatibility related to different degrees of freedom between beam and wall element in transition regions. Also, the stiffness matrices of transition zone elements which are directly connected with beam transition elements in transition regions can be derived from the equivalent constraint conditions. These elements provide the reasonable mesh grading schemes for transition regions and can be usefully applied to the transition regions of all structures that the interactions of wall and beam element are considered.

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Cyclic Test for RC Frame with Infilled Steel Plate (강판채움벽을 갖는 RC 골조에 대한 반복가력 실험)

  • Choi, In Rak;Park, Hong Gun
    • Journal of Korean Society of Steel Construction
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    • v.21 no.2
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    • pp.115-125
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    • 2009
  • An experimental study was performed to investigate the cyclic behavior of the reinforced concrete frame with infilled steel plate. For this purpose, three-story compositewalls using infilled steel plates (RCSPW) were tested. The parameters for this test were the reinforcement ratio of the column and opening in the infilled steel plate. A reinforced concrete infilled wall (RCIW) and a reinforced concrete frame (RCF) were also tested for comparison. The deformation capacity of the RCSPW specimen was significantly greater than that of the RCIW specimen, although the two specimens exhibited the same load-carrying capacity. Like the steel plate walls with the steel boundary frame, RCSPW specimens showed excellent strength, deformation capacity, and energy dissipation capacity. Furthermore, by using infilled steel plates, shear cracking and failure of the column-beam joint were prevented. By using a strip model, the stiffness and strength of the RCSPW specimens were predicted. The results were compared with the test results.

Evaluation of Seismic Performances on Prestressed Composite Coupling Beams with Discontinuous Webs (불연속웨브가 도입된 프리스트레스트 합성연결보에 대한 내진성능 평가)

  • Oh, Jae Yuel;Lee, Deuck Hang;Choi, Seung Ho;Kim, Kang Su;Yi, Seong Tae
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.17 no.1
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    • pp.133-142
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    • 2013
  • The shear wall system with coupling beams has been known as an effective means for moderate and high rise buildings up to 40 stories, because this structural system can provide the enhanced lateral stiffness compared to individual shear walls. Typical reinforced concrete coupling beams have difficulties in construction due to complicated reinforcing work on site, and steel coupling beams also have disadvantages in economical point of view because of a large number of stiffeners required for its stability under lateral loading. To overcome these disadvantages in existing coupling beam systems, this study developed the prestressed composite coupling beam with discontinuous webs, which have improved constructability, economic feasibility, and reduced sectional size. The reversed cyclic loading test on two prestressed composite coupling beams with discontinuous webs having different shear reinforcement ratios have been conducted to investigate their structural performances, and test results showed that the proposed composite coupling beams had good seismic performances.

Lateral Drift Optimal Control Technique of Shear Wall-Frame Structure System using Composite Member (합성부재를 이용한 전단벽-골조 구조시스템의 횡변위 최적제어방안)

  • Lee, Han-Joo;Jung, Sung-Jin;Kim, Ho-Soo
    • Proceeding of KASS Symposium
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    • 2005.05a
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    • pp.191-198
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    • 2005
  • The effective stiffness-based optimal technique to control quantitatively lateral drift for shear wall-Frame structure system using composit member subject to lateral loads is presented. Also, displacement sensitivity depending on behavior characteristics of structure system is established and approximation concept that preserves the generality of the mathematical programming is introduced. Finally, the resizing technique of shear wall, frame and composite member is developed and the example of 20 story framework is presented to illustrate the features of the quantitative lateral drift control technique.

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