To counter a bridge constructed with steel fiber reinforced ferroconcrete, the calculation of bending strength and crack of steel fiber reinforced ferroconcrete t beam has been accomplished.

The engineering situation of Nanyang river bridge is introduced and the idea of adopting external prestress vertical tension method to reinforce t beam and design principle are proposed.

The calculation on relative parameters for strain-pull controlling of T-style beam bridge prestress, can provide reference for construction in future.