Characteristic of Behavior of Steel fiber Reinforced Concrete Exterior Beam-Column Joints
The Purpose of this study is to evaluate the behavior of exterior beam-column joints.For this purpose, the volume fraction of steel fiber is determined as main parameter (0%, 1% and 2%) and the cyclic loading test of the beam-column joints was conducted.According to the test result, the maximum strength of the RC joint did not exceed the nominal bending strength of the beam.However, in the case of test specimens with 1 and 2% volume fraction of steel fiber, the maximum strength was 10% and 15% higher than the nominal strength.All the specimens exhibited the maximum strength after yielding of the beam and the drift experiencing the yielding of joint transverse rebar was delayed as the volume fraction of steel fiber increased.In order to evaluate the deformation capacity of the exterior beam-column joint, total deflection of beam-end was divided into beam flexural rotation, joint deformation, bar slip, and flexural deformation of column.In the case of test specimens with 1% volume fraction of steel fiber, there was no change in the beam flexural deformation.However, contribution of flexure deformation was increased by 1.38 times for the inclusion of 2% volume fraction of steel fiber.In addition, experiencing maximum strength, the deformation of joints was decreased about 57% with inclusion of 1% steel fiber and 72% with 2% steel fiber, compared to RC joint.The results of this study indicate that steel fiber inclusion can change the failure mechanism of beam-column assemblage, especially joint fracture to beam yielding.
Steel fiber beam-column joints drift contribution joint shear
D.H.Son U.J.Cho B.I.Bae C.S.Choi
Department of Architectural Engineering, Hanyang University, Seoul, Korea The Research Institute of Industrial Science, Hanyang University, Seoul, Korea
国际会议
福州
英文
999-1005
2018-11-04（万方平台首次上网日期，不代表论文的发表时间）