비틀림, 전단력, 휨모멘트를 받는 철근콘크리트 보의 상호작용식

Abstract

비틀림외에 휨모멘트, 전단력이 동시에 작용되는 철근콘크리트 부재의 강도는 상호작용으로 인하여 비틀림, 휨모멘트, 전단력만이 작용되는 부재의 강도에 비해 감소한다. 이러한 상호작용에 관하여는 만족할 만한 이론식이 제안되지 못하고 있으며 단지 많은 실험을 통한 신뢰성 높은 결과식이 대신되고 있다.

본 논문은 腹部철근의 有無에 따라, 휨, 비틀림, 전단력의 합성에 따른 상호작용에 관한 이론을 고찰하였다. 현행 ACI Code의 비틀림에 관한 사항을 논의하였고 腹部철근에 따라서, 또한 휨모멘트 및 전단력에 따라서 상호작용식을 구분 적용함이 타당하다고 고찰되었다.

Flexural moments, flexural shear forces and torques, when applied simultaneously, interact in a manner which will reduce the strength of a concrete member in pure torsion or pure shear.

No satisfactory theories of this complex interaction have been applied, therefore one must rely on the experimental investigation of this situation.

This paper intends to study the interaction theories between torsion, bending, shear for concrete members with or without web reinforcement.

The torsion criteria of the 1977 ACI Code provisions are compared with these studies theories for the design of concrete members subject to combined loadings.

Flexural moments, flexural shear forces and torques, when applied simultaneously, interact in a manner which will reduce the strength of a concrete member in pure torsion or pure shear.

No satisfactory theories of this complex interaction have been applied, therefore one must rely on the experimental investigation of this situation.

This paper intends to study the interaction theories between torsion, bending, shear for concrete members with or without web reinforcement.

The torsion criteria of the 1977 ACI Code provisions are compared with these studies theories for the design of concrete members subject to combined loadings.