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Blind Analysis of the Benchmark Tests on RC Beam-Column Joints under Cyclic Loading

Author: YuWei
Tutor: HanZuo
School: China Seismological Bureau, Institute of Engineering Mechanics
Course: Disaster Prevention and Reduction Engineering and Protective Engineering
Keywords: Beam - column connections Nonlinear Reaction Benchmark experiments Blind analysis
CLC: TU375.4
Type: Master's thesis
Year: 2007
Downloads: 61
Quote: 2
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Abstract


As we all know, the reinforced concrete (RC) beam - column connections the nonlinear reaction under cyclic loading is very complex and affected by many factors . Conventional seismic analysis of RC structures , beam - column connections are usually assumed to be rigid or semi-rigid , resulting in large errors . Therefore, an accurate analysis of the seismic performance of RC structures , contains as few parameters as possible to establish a material nonlinearity and the various factors affecting the theory but can fully reflect the beam - column joint model is very necessary . Under cyclic loading , the nonlinear response performance of the reinforced beam - column joint response significant influence. Therefore, the establishment of a can accurately describe the nonlinear properties of reinforced under cyclic loading analysis model is also essential in the seismic analysis of RC beam - column joint . By comparison of several widely used model of reinforced and screening , the paper details two classic hysteretic model reflects reinforced cycle characteristics and numerical stability under small strain cycling conditions were improved . The improved model is then transplanted into the finite element seismic analysis software , and the accuracy and efficiency of the model was verified by an example . Basis of consolidation experiments reinforced materials , papers to choose one of them as a blind analysis of reinforced material model . As another part of the blind analysis of the material model , the paper introduced by the numerical stability improved uniaxial nonlinear constant reinforced concrete model and then ported to the finite element seismic analysis software in conjunction with the reinforced model . Determine material model based on the thesis proposes a new simplified beam - column joint model to simulate the rotation and shear spring three typical beam - column joint deformation failure mechanisms . Through the the blind analysis show that simplified node model not only has the higher accuracy and computational efficiency , and is easy to apply . Use of papers selected and improved reinforced concrete model proposed the simplified beam - column joint model , at the University of Tokyo, Japan in 2006 RC beam - column joint blind analysis of benchmark experiments under cyclic loading , and contrast analysis and experimental results to verify the reliability of the model of the new node . On this basis , the paper summed up the inadequacies of the simplified model of the beam - column joint , the future direction of research and development .

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures > Frame
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