Progressive Collapse of a Single Layer Schwedler Dome

Large span domes have always drawn architects’ and engineers’ interest as they provide easy method of roofing large areas with architectural beauty. Single layer Schwedler Dome composed Circular Hot Hollow Frame (CHHF) is investigated to understand the effects individual member removal behaviour stability single dome. The major issues structural system are related its instability phenomena whereby it vulnerable snap through buckling. failure space structure such Sultan Zainal Abidin Stadium Bucharest clearly show an understanding important develop a safer especially in future. This study deals dome having diameter 52 m depth ratio ½. loads subjected on nodes consists dead, live wind assumed be 1kN each. Due symmetric geometry dome, removals were done quarter section only that distribution patterns similar for each section. required 210 members’ result obtained has been analysed thoroughly. In order achieve objectives research, computer programming FORMIAN, AutoCAD SAP2000 V18 used generate afterwards structure. numerical technique based redistribution internal loadings due member’s failure. Critical members determined by analyzing Demand Capacity Ratio (DCR) value identifying number overstressed neighboring members. When load exceeds loading capacity, becomes fails which may lead collapse entire DCR numbers existed after criticality As conclusion, this critical area must considered during analysis, design construction stage