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Evaluation of Flexural Behavior of a Modular Pier with Circular CFT

충전원형강관을 이용한 모듈러 교각의 휨 거동 평가

  • Ma, Hyang Wook (Daewoo Institute of Construction Technology) ;
  • Oh, Hyun Chul (Daewoo Institute of Construction Technology) ;
  • Kim, Dong Wook (Department of Civil Engineering, Chung-Ang University) ;
  • Kong, Davon (Department of Civil Engineering, Chung-Ang University) ;
  • Shim, Chang Su (Department of Civil and Environmental Engineering, Chung-Ang University)
  • 마향욱 (대우건설 기술연구원, 토목연구팀) ;
  • 오현철 (대우건설 기술연구원, 토목연구팀) ;
  • 김동욱 (중앙대학교, 토목공학과) ;
  • ;
  • 심창수 (중앙대학교, 사회기반시스템공학부)
  • Received : 2012.05.16
  • Accepted : 2012.12.13
  • Published : 2012.12.27

Abstract

A new modular pier system using concrete filled circular steel tubes was suggested to realize modular bridge substructures for accelerated bridge construction. Structural details and connection details were proposed by connection multiple concrete filled tubes (CFT) for standardized products of fabrication, delivery and erection. Static tests were performed for the modular pier with suggested details under lateral load conditions for weak and strong axes. Due to the eccentricity by the bracing system, the modular pier showed 5.23 times higher flexural stiffness and 6 times greater flexural strength from the test. It is proper for the rational design to evaluate stress and deformation by frame modeling of the modular CFT pier. Structural capacity of the pier can be obtained by adjusting the spacing of the CFT columns. Design recommendations were derived from the test.

Acknowledgement

Supported by : 국토해양부

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