Document Type: FAQ Product(s): LEAP CONBOX Version(s): All Original Author: Bentley Bridge Technical Support Group - VM QUESTION: User has a two span post-tensioned box girder bridge with an integral pier. When he/she added a diaphragm at the pier, the required P-Jack force is increased quite a bit. Explain how Conbox analyzes the diaphragm that would cause this increase in jacking force? ANSWER:P-jack is designed at the support location where the diaphragm is present.P-jack is designed for stress. Section properties used for stress calculation will be different with and without diaphragm. Since stress calculation will change, P-jack will change.
Document Type: FAQ
Product(s): LEAP CONBOX
Version(s): All
Original Author: Bentley Bridge Technical Support Group - VM
ANSWER:P-jack is designed at the support location where the diaphragm is present.P-jack is designed for stress. Section properties used for stress calculation will be different with and without diaphragm. Since stress calculation will change, P-jack will change.