Study of Newly-built Anchor Reinforcement Measure for External Pre-stressing Reinforced Concrete Bridge

According to the occurrence of the anchor block's disease when the external tendons were stressed using external re-stressing reinforced method to reinforce a concrete bridge and the field test data,the reason of the disease is analyzed.And then the pasting steel plate method is proposed to reinforce the anchor block.The solid finite element modeling method is used to analyze the anchor's deformation and stress distribution before and after reinforcing.Finally,the structural form of the reinforcement steel plate and the most adverse stress region are obtained.The arrangement of the bolts are discussed and some useful suggestions are proposed.