Failure mechanism of single-layer saddle-curve reticulated shells subjected to erathquakes

Abstract

In order to have a good understanding of the failure mechanism of single-layer saddle-curve reticulated shells under earthquake motion, dynamic failure mode of single-layer saddlecurve reticulated shells under earthquake motion is discussed with accumulation of material damage introduced to analyze the failure of these shells under dynamic actions. Based on the comprehension of the mechanical behaviours and structural full-range characteristic responses in an example, dynamic strength failure due to excessive development of plastic deformation is a mainly failure mode for single-layer saddle-curve reticulated shells subjected to earthquakes. Then, a method is proposed for determination of failure state. The relationships between structural responses under ultimate load and different structural parameters are investigated through simulation.