公开(公告)号：US20230117215A1

公开(公告)日：2023-04-20

申请号：US17538038

申请日：2021-11-30

申请人： National Applied Research Laboratories

发明人： Marco BONOPERA ,  Kuo-Chun CHANG ,  Chung-Che CHOU

IPC分类号： G01N3/20 ,  G01N3/06 ,  G01N29/04 ,  G01N33/38

摘要： A method for identifying prestress force in single-span or multi-span PCI girder-bridges is provided. The method includes non-destructive steps for obtaining a set of parameters of the PCI girder-bridge under investigation, and combines various analyses to identify the change of prestress force. Therefore, the losses of prestress force are tracked and predicted. The method does not cause structural damages along the PCI girder-bridge, and the cost of the identification is significantly decreased.