Schwedler Single-Layer Ellipsoid Reticulated Shell Static Stability Analysis of Influencing Factors

Abstract

Proceeding eigenvalue buckling analysis and geometric nonlinear analysis on schwedler single-layer ellipsoid reticulated shell with analysis software ANSYS, obtain structural buckling mode and ultimate bearing capacity at different short span and different rise-span ratio. Then analyze its impact on static stability of ellipsoid reticulated shell considering load asymmetric distribution and initial defect, conclude stability regular of schwedler single-layer ellipsoid reticulated shell. These study results can provide theoretical basis and technical reference for further studying on static stability of schwedler single-layer ellipsoid reticulated shell and engineering practice.

Elasto-Plastic Bearing Capacity of Four Types of Single-Layer Reticulated Shell Structures Under Fire Hazards

“…2 Single-layer spherical lattice shell structures are defect-sensitive 3,4 for which the initial defects can obviously reduce their bearing capacity. 5 In recent years, relevant researches have been focused on the stability of reticulated shells of di®erent types with regard to the following issues: (1) the in°uence of elastic and elasto-plastic capacity on structural safety 6,7 ; (2) the in°uence of semirigid joint connection on loading capacity [8][9][10] ; (3) damage assessment based on stability capacity 11 and (4) dynamic stability under earthquake. 12 However, most of these researches have been carried out for the normal temperature condition, while the e®ect of high temperature caused by potential¯re hazards is not taken into account.…”