Construction cracks control of 64 m same-height simply-supported prestressed concrete box-girder

In light of the construction features of 64 m same-height simply-supported prestressed concrete box-girder on Yangtze river railway bridge in Anqing,the paper analyzes the concrete structure cracking causes,puts forward cracks control measures of same-height simply-supported prestressed concrete box-girder,and especially adopts prestressing tendons to control concrete cracks.Practice proves that: the above mentioned measures are effective for controlling concrete box-girder cracks.