Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Analytical Evaluation of Axial Load Effects on Design Equation for Special Boundary Element in RC Structural Wall

철근콘크리트 구조 벽체의 특수 경계요소 설계식에 대한 축력 수준 영향의 해석적 평가

  • Received : 2012.07.02
  • Published : 2012.10.25
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Abstract

Boundary elements are regions at the ends of the cross section of the wall that are reinforced as columns, with the reinforcement enclosed by hoops or ties. RC walls with boundary elements are less susceptible to earthquake damage than walls without boundary elements. The first provisions for special boundary elements were included in the ACI318-95, where the stress-based approach was used. The displacement-based design equation was newly incorporated into the ACI318-99, because of the shortcomings associated with the ACI318-95 provision. In this paper, the background of displacement-based design equation is described briefly and its derivation is presented step by step. To investigate the assumption which the neutral axis does not change significantly within the range of extreme fiber compression strain values typically computed when the wall is displaced to the design displacement, sectional analyses of wall using the Response-2000 were carried out under various axial load levels. The results of analysis show that the assumption related to the neutral axis is not valid if a cross section of wall is under the compression-controlled condition.

Keywords

Acknowledgement

Grant : 탈현장 초고속 주택 구조 기술 개발

Supported by : 한국건설기술연구원

References

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