The Nonlinear Dynamic Response Analysis of Frame-Supported Multi-Ribbed Slab Structure

Abstract eng:
In this paper nonlinear dynamic analysis model of frame-supported multi-ribbed slab structure (FSMRSS) is established with a rigid frame-oblique compression bar macro-model, which bottom frame and upper inner frame of multi-ribbed wall slab as well as outer frame are simulated by beam and column elements with retrogressive three-linear resilience model, while an analytical macro-model based on an equivalent strut approach integrated with a smooth hysteretic model is proposed for representing silicate brick infill panels. The hysteresis model uses degrading control parameters for stiffness and strength degradation and slip pinching. The nonlinear dynamic time-history analysis of 14 numerical cases of FSMRSS under eight earthquakes has been carried out. The dynamic response as well as influencing factors of FSMRSS was carefully studied, which provides more data information for the comprehension of earthquake responses characteristic of the structures. FSMRSS shows generally good seismic performance to severe earthquake motions.

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