• Title/Summary/Keyword: Structual design

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Structual Design of a Building with High Damping Provided by Deformation Amplification Mechanisms and Tuned Viscous Mass Damper

  • Mizuki Shigematsu;Takaaki Udagawa;Satoru Nagase
    • International Journal of High-Rise Buildings
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    • v.12 no.3
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    • pp.215-224
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    • 2023
  • This paper presents the structural design and response control system of the JR MEGURO MARC building, a 70 meters high office building with steel structure located in Tokyo (Figure 1). In order to achieve high earthquake resistance and useable office space, this building integrates a centralized response control system with deformation amplification mechanisms and tuned viscous mass dampers on the lower floor. Moreover, buckling-restrained braces (BRB) are installed on the upper floors to increase the effectiveness of centralized response control system and to reduce damage of the main frames in the event of a major earthquake. It features an efficient centralized response control system by amplifying the deformation of the dampers without creating a soft story.

Structural Analysis of Injection Molding Machine Components (사출성형기의 주요 구조부품 해석)

  • U, Chang-Su;Lee, Sang-Rok
    • 연구논문집
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    • s.25
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    • pp.5-12
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    • 1995
  • Mold platen are one of the most important structural components of the injection molding machine. Mold platen had been designed, and manufactured based on the experience and the method of trial and error. Recently, as the computer progress, the numerical simulation method using commercial finite element analysis code has been used to analyze the characteristics of components. It's a urgent problem to reduce the weight of mold platen while preserving the safety and reliability for the structual failure. Finite element analyses to establish basic design technologies and reducing the weight of mold platen were carried out. As result, we are obtained the about 10% reducing the weight for mold platen.

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3-D Behavior and Strut-and-Tie Model Analysis of Diaphragm in PSC Train Bridge (PSC철도교량 격벽부의 3차원 거동 및 스트럿-타이 모델 해석)

  • 송하원;변근주;김형운;김영훈
    • Proceedings of the KSR Conference
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    • 1998.05a
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    • pp.564-571
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    • 1998
  • The function of diaphragms at abutments and piers of prestressed concrete (PSC) box girder train bridge is to transfer forces from the superstructure onto bearings or column and to stiffen the superstructure cross-section against in-plane deformation. Due to large stress disturbance at diaphragm, the design for the diaphragm using conventional design method is relatively irrational than designs for other structual members. And, due to contribution to boundary condition of deck slab by the diaphragm, the behavior of deck slab near the diaphragm is different from behavior of the deck slab obtained from two dimensional analysis of the bridge, which is basis far the design of deck slab. In this paper, three dimensional behavior of deck slab near diaphragm of PSC box girder train bridge constructed by the precast span method are analyzed by using three dimensional finite element modeling. Then, strut-and-tie model is applied to design the diaphragm of PSC box girder train bridge. The modeling techniques in this paper can be applied effectively to examine the causes of cracks at deck slab near diaphragm and to design diaphragm rationally.

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Structual Design Verification and Design Optimization of Pantograph for Korean Very High Speed Train (한국형 고속전철용 판토그라프 구조설계 검증 및 설계 최적화)

  • 정경렬;김휘준;백진성;박수홍
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2001.11b
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    • pp.1229-1234
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    • 2001
  • There are three items, which are panhead displacement, tilting angle of pan head, required moment of main shaft, which representing kinematic performance of pantograph. Kinematic variables effective on kinematic performance are length of each components and installation angle, In this study, cost function is defined with 3 items, By this cost function, length of thrust rod was optimized. Finite element analysis was used to consider structural soundness. Finite element model was qualified by comparison between analysis result with experiment result. By qualified F.E, model various severe condition was simulated to consider structural soundness.

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Introduction of distributed system for a integrated structual design systems (통합 구조설계 시스템 구축에서의 분산시스템 도입)

  • 강인호;천진호;신동철;이병해
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1999.10a
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    • pp.343-350
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    • 1999
  • This study introduce how distributed object technology can be applied effectively to use in a integrated structural design systems environment with the rapid increasement in the use of network technology. The architecture and management models of the developed systems are described by the CORBA(Com mon Object Request Broke Architecture) distribution standard and objects in Java language. The proposed system can be used for communicating with data between remote designers, regardless of the H/W or S/W platforms they use. Introduction of distributed objects methodologies to a Integrated structural design systems provide advanced levels of integration in structural design environment.

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A analysis on dyanmic movements of Bridge status using High Rail monitoring systems (상시 계측결과를 이용한 경부고속철도 교량의 동적거동 분석)

  • Chung Jae-Min;Han Sang-Chul;Choi Il-Yoon;Lee Jun-Seok;Seo Hyeong-Lyel
    • Proceedings of the KSR Conference
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    • 2004.10a
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    • pp.934-939
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    • 2004
  • The Korea high-speed rail, based on the French design. It also implements new concept to increase the strength of bridge deck by adding an impact factor (dynamic intensity factor) in static load. In order to assure the dynamic stability, SYSTRA and Jeseph Penzien, a professor in CEC (the US) conducted a dynamic stability review on design phase. Analyzing the review results, they developed design criteria for dynamic behavior. This study deal with operating PSC box GIRDER equipped with measurement equipment or measured data of Seoul $\∼$ Taejeon, P.S.C BOX GIRDER bridge and steel comsition bridge equipped with measurement equipment based on structual knowledge about configuration of measuring sensor, response analysis of structure when train runs was performed by using measured data of PSC box girder to directly compare with design criteria. moreover, the dynamic stability with comparison of high-speed rail construction criteria was reviewed and analyzed based on historical records.

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Computer-Aided Drawing and Manufacturing of Rebars for RC Buildings (RC 건축물 철근 배근 상세도 및 가공도 작성 자동화)

  • Choi Dong-In;Kim Chee-Kyeong
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2006.04a
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    • pp.508-513
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    • 2006
  • In construction of RC buildings, the quality of shop and detail drawings is very essential for the quality and safety of buildings. Nevertheless, most of thess works are left to site workers and the requirements about bar detailing such as anchorage and splice have been done without rational design and engineering. The purpose of this research is to develop a computer-aided drawing system of rebars for RC buildings. The system is based on an integrated structural design system, that is SDP. SDP manages an engineering database for structural design information. It provides all the information needed to draw rebar drawings. The drawing system consists of three modules, 1) Structual Plan Drawing System, 2) Shop Drawing System, and 3) Detail Drawing System. It is expected that not only the productivity of detail drawing works but also the quality and safety of buildings will be improved using the rebar drawing system developed in this research.

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