PROGRESSIVE COLLAPSE OF CABLE STAYED BRIDGE USING SAP2000

Progressive collapse is a major threat causes the more demolitions of structure and leads to the loss and damage of lives. The main causes of the progressive collapse are earthquake and severe wind which results in gradual and successive failure of number of elements of the structure. The present paper includes linear static analytical procedures. For linear static analysis loading is considered as per the Post Tensioning Institute (2001) recommendations and GSA (2003) progressive collapse guidelines. Alternate path (AP) method is used for progressive collapse analysis of the cable stayed bridge. The cable stayed bridges are modeled in SAP 2000 with various cable arrangements and studied the deflection of girder under static loading condition. also studied the axial forces developed in the cables under the cable loss. The results are taken with respect to the various cable arrangement and number of cable lost.