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论文类型：期刊论文
发表时间：2014-11-01
发表刊物：EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
收录刊物：SCIE、EI、Scopus
卷号：43
期号：14
页面范围：2115-2134
ISSN号：0098-8847
关键字：force analogy method; reinforced concrete framed structures; geometric nonlinearity; stiffness degradation; strength deterioration; structural member failure; rotation hinge; slide hinge
摘要：A method of nonlinear seismic analysis for RC framed structures considering full-range factors, including stiffness and strength degradation, geometric nonlinearity, and structural member failure, is established based on the fundamental concept of the force analogy method. The strong material nonlinearity, large geometric deformation, and internal forces redistribution due to the member failure can be depicted by the proposed local plastic mechanisms, the rotation hinges at the member ends and the slide hinges assigned to the columns, of which the measurement relationships are moment versus plastic rotation and shear force versus shear plastic deformation, respectively. They are capable of evaluating the exact response of RC structures. Because only unchanging initial stiffness matrices are used through the whole computation process, the state-space formulation was used for solving the equations of motion. The advantages of the force analogy method, such as high efficiency and stability, are still retained. The exactness of the proposed local plastic mechanisms is verified against a group of tests data, and the application of the proposed procedure is performed to an RC framed structure to simulate the full-range nonlinear response by increasing the excitation step by step until failure of partial structural members appear. Copyright (c) 2014 John Wiley & Sons, Ltd.