Study on the Diaphragm Effect of the Beam Type Bridge

Our country bridge design code prescribe beam bridge often set the diaphragm to strengthen transverse connection. However, many countries think the beam bridge can reduce or do not set diaphragm. This paper respectively analyzed the deflection and stress of straight T beam bridge and curved box girder bridge with or without diaphragm, further demonstrated the diaphragm settings are necessary in straight beam bridge and curved beam bridge, especially when the vehicle and bridge width gradually increase, the diaphragm right force analysis and design becomes more and more important, it become an important part of the whole bridge design.