| Popis: |
Critical wind velocity of dynamic failure is an important factor for the wind-resistance design of three-way single-layer cylindrical reticulated shells. This paper investigates the elastoplastic dynamic failure of reticulated shells under three dimensional wind loads, the ultimate capacity, buckling mode and plastic development distribution of reticulated shells under wind loads are investigated. The influence of initial geometrical imperfections, initial static loads, supporting types, rise-span ratio, long-width ratio on the failure performance of reticulated shells are presented. The comparison of the ultimate bearing capacity shows that the critical wind velocities under dynamic wind loads are much lower than that under static wind loads for reticulated shells. |
