• Title/Summary/Keyword: lateral drift

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Lateral Drift Control Technique of High-Rise Shear Wall Core Structural System (고층 전단벽 코어구조시스템의 횡변위 제어방안)

  • Han, Seong-Baek;Kang, Myoung-Hee;Nam, Kyung-Yun;Lee, Seong-Su;Lee, Han-Joo;Kim, Ho-Soo
    • Proceeding of KASS Symposium
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    • pp.151-154
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    • 2008
  • This study presents the efficient lateral drift control optimal technique that can control quantitatively lateral drift of high-rise structures. To this end, optimal design algorithm is formulated and then lateral drift control optimal program is developed. The 130 story shear wall core model is considered to illustrate the features of lateral drift control technique proposed in this study

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Study on the Limit Slenderness of a Single Outrigger System Building Satisfied the Limitation of the Maximum Lateral (풍하중에 대한 횡변위 제한 값을 만족하는 단일 아웃리거 시스템 건물의 한계 세장비에 대한 연구)

  • Yang, Jae-Kwang;Lee, Yeon-Jong;Park, Sung-soo
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.33 no.1
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    • pp.57-64
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    • 2017
  • The demand on high-rise buildings increased, lateral drift control became a most important design variable, at the same time, various lateral drift control system were proposed and outrigger structural system was one of these typical systems. In recent years, the optimal location of outrigger has been proposed. The maximum of lateral drift vary depending on the slenderness ratio of structure, even the structures were set as similar heights and outriggers were also set at the optimal locations. Commonly, There's no knowing that the limitation of the maximum lateral drift either meets the requirements or not limitation of the maximum lateral drift as just at the optimal location of outriggers simply. This paper transformed the equation on the optimal location of singular outrigger proposed by Taranath. Equation of limitation of slenderness ratio on structures with singular outrigger on the optimal location were proposed singular outrigger on the optimal location, limitation of slenderness ratio was also proposed.

Stiffness-Based Optimization for the Lateral Drift Control of Outrigger System (아웃리거시스템의 횡변위제어를 위한 강성최적화 기법)

  • Lee, Han-Joo;Park, Young-Sin;Nam, Kyung-Yun;Lee, Seong-Su;Shin, Hyo-Bum;Kim, Ho-Soo
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • pp.210-215
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    • 2008
  • This study presents an effective stiffness-based optimal technique to control quantitatively lateral drift and evaluates the structural behavior characteristics and efficiency for tall outrigger system subject to lateral loads. To this end, displacement sensitivity depending on behavior characteristics of outrigger system is established and approximation concept that can efficiently solve large scale problems is introduced. Specifically, under the 'constant-shape' assumption, resizing technique of member is developed. Two types of 60 story frameworks are presented to illustrate the features of the quantitative lateral drift control technique proposed in this study.

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Lateral Drift Control of 3-D Steel Structures Using Approximation Concept (근사화 개념을 이용한 삼차원 철골조 구조물의 횡변위 제어에 관한 연구)

  • Lee, Han-Joo;Lim, Young-Do;Kim, Ho-Soo
    • 한국공간정보시스템학회:학술대회논문집
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    • pp.96-102
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    • 2004
  • This study presents an effective stiffness-based optimal technique to control quantitatively lateral drift for 3-D steel frameworks subject to lateral loads. To this end, the displacement sensitivity depending on behavior characteristics of 3-D steel frameworks is established. Also, approximation concept that can preserve the generality of the mathematical programming and can efficiently solve large scale problems is introduced. Resizing sections in the stiffness-based optimal design are assumed to be uniformly varying in size. Two types of 30-story frames are presented to illustrate the features of the Quantitative lateral drift control technique proposed in this study.

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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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    • 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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Lateral Drift Control of High-rise Buildings using Partial Reanalysis Algorithm (부분재해석 기법을 이용한 고층건물 횡변위제어)

  • Lee, Jae-Cheol;Kim, Chee-Kyeong
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.22 no.1
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    • pp.81-88
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    • 2009
  • This paper alined at the development of a lateral drift control method that is able to quantitatively control the lateral drift of global node. For this, we applied an efficient partial reanalysis algorithm. By using this algorithm, we could recalculate the displacement and member force of the specific node without reanalyzing the entire structure when member stiffness changes partially. The theoretical concepts of the algorithm are so simple that it is not necessary to solve the complicate differential equation or to repeat the analysis of entire structure. The proposed method calculates the drift contribution of each member for the global displacement according to the variation of section sizes by using the algorithm. Then by changing the member sizes as the order of drift contribution, we could control the lateral drift of global node with a minimum quantity of materials. 20 story braced frame structure system is presented to illustrate the usefulness of proposed method. It is shown that the proposed method is very effective in lateral drift control and the results obtained by proposed method are consistent with those of commercial analysis program.

A Study on Quantitative Lateral Drift Control of Tall Steel Braced Frames subject to Horizontal Loads (수평하중을 받는 고층철골가새골조의 정량적인 횡변위제어에 관한 연구)

  • Kim, Ho-Soo;Lee, Han-Joo
    • Journal of Korean Society of Steel Construction
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    • v.12 no.4
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    • pp.397-406
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    • 2000
  • This study presents an effective optimal technique to control quantitatively lateral drift for tall steel braced frames subject to horizontal loads. In this paper, the displacement sensitivity depending on behavior characteristics of steel braced frames is established, and also the approximation concept that has the generality of the mathematical programming and can efficiently solve large scale problems is introduced. Especially, the commercially available standard steel sections are used for the discrete selection of member sizes. Three types of 12-story braced frames and a 30-story braced framework are presented to illustrate the features of the quantitative lateral drift control technique proposed in this study.

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Dynamic Sensitivity Analysis For Lateral Drift Control Of Frame-Shear Wall Structures (골조-전단벽 구조물의 횡변위제어를 위한 동적 민감도 해석)

  • Lee, Han-Joo;Kim, Ji-Youn;Han, Seung-Baek;Nam, Kyung-Yun;Kim, Ho-Soo
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • pp.571-576
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    • 2007
  • This study presents stiffness-based optimal design to control quantitatively lateral drift of frame-shear wall structures subject to seismic loads. To this end, lateral drift constraints are established by introducing approximation concept that preserves the generality of the mathematical programming and can efficiently solve large scale problems. Also, the relationships of sectional properties are established to reduce the number of design variables and resizing technique of member is developed under the 'constant-shape' assumption. Specifically, the methodology of dynamic displacement sensitivity analysis is developed to formulate the approximated lateral displacement constraints. The 12 story frame-shear wall structural models is considered to illustrate the features of dynamic stiffness-based optimal design technique proposed in this study.

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Quantitative Lateral Drift Control of RC Tall Frameworks using Dynamic Displacement Sensitivity Analysis (동적 변위민감도 해석을 이용한 고층 RC 골조구조물의 정량적인 횡변위 제어 방안)

  • Lee, Han-Joo;Kim, Ho-Soo
    • Journal of Korean Association for Spatial Structures
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    • v.6 no.3
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    • pp.103-110
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    • 2006
  • This study presents a technique to control quantitatively lateral drift of RC tall frameworks subject to lateral loads. To this end, lateral drift constraints are established by introducing approximation concept that preserves the generality of the mathematical programming and can efficiently solve large scale problems. Also the relationships of sectional properties are established to reduce the number of design variables and resizing technique of member is developed under the 'constant-shape' assumption. Specifically, the methodology of dynamic displacement sensitivity analysis is developed to formulate the approximated lateral displacement constraints. Three types of 10 and 50 story RC framework models are considered to illustrate the features of dynamic stiffness-based optimal design technique proposed in this study.

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Optimal Displacement Control of Shear Wall Structure using Sensitivity Analysis Technique (감도해석기법을 이용한 전단벽 구조물의 최적변위제어)

  • Lee Han-Joo;Jung Sung-Jin;Kim Ho-Soo
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • pp.121-128
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    • 2005
  • This study presents an effective stiffness-based optimal technique to control quantitatively lateral drift for shear wall structures subject to lateral loads. To this end the displacement sensitivity depending on behavior characteristics of shear wall structures is established. Also, the approximation concept that can preserve the generality of the mathematical programming and can efficiently solve large scale problems is introduced. Resizing sections in the stiffness-based optimal design are assumed to be uniformly varying in size and the technique of member grouping is considered for the improvement of construction efficiency Two types of 11-story shear wall structures are presented to illustrate the features of the quantitative lateral drift control technique proposed in this study.

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