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Multi-ribbed frame grid (hereinafter referred to as MRFG) is an important part of Multi-ribbed composite wall
and consisted of outer frame and ribbed grid. The reinforcement of outer frame is the main influence factor on the
performance of MRFG. In this study, an MRFG specimen under laterally cyclic and axial loading in literature is
numerically simulated with 5 kinds of different reinforcement ratio of outer frame, by a general finite element software
and user-defined material model. The influence of different reinforcement ratio of outer frame on the mechanical behavior
of MRFG has been discussed.