鐵筋 및 部分 프리스트레스트 콘크리트 들보의 剪斷擧動에 관한 연구 = A Study on the Shear Behavior of R.C. & Partial P.C. Beams

다국어 초록 (Multilingual Abstract)

In this study,the 'Comb-structure' model which has been developed from truss analogy is modified in order to be applied to the partially prestressed concrete members. The proposed 'Comb-structure' model is modified so that the position, the slope of concrete compressive chord and the slope of concrete diagonal strut may change according to the magnitude of loads and prestress.
The anaysis results by the proposed 'Comb-structure' model are compared with the experimental results and validity of model is examined. It shows that the the result of 'Comb-structure' analysis lies between that of the modified Moersch theory and classical Moersch theory, and close to the measured value after cracking. The deflection of the beam and the stress of strrup can show good agreement, so it can be concluded that the proposed 'Combstructure' analysis model explains the shear behavior of partially prestressed concrte beams after crack initiation.