Seismic response analysis of K8 pattern single-layer reticulated domes under vertical rare earthquakes

The nonlinear response of K8 pattern single-layer reticulated domes of different rise-span ratios under vertical rare earthquakes are analyzed by using the dynamic time-history analysis method and the pseudo static elasto-plastic analysis method. Comparison of these analysis results indicates that the structural members would be in different plastic deformation states under vertical rare earthquakes because of different rise-span ratios. The analysis results of the dynamic time-history method indicate that the vertical displacement response decreases with the increase of the rise-span ratio in condition of the same member section. Through the comparison the analytical results of pseudo static elasto-plastic analysis with the analytical results of dynamic time-history analysis, it is found that the difference of plastic members and region and error of the vertical displacement response, which may be a reference for future vertical seismic study of single-layer reticulated domes.