In view of the phenomenon that the actual elongation of small radius prestressing tendons is slightly greater than the theoretic elongation, all kinds of factors that influencing the elongation of the tendons were analyzed and the constitution feature of the tensioning elongation of the tendons was pointed out.

By taking it into no consideration the repugnant forces for safety support conditions and regarding elastic-plastic stress radius as being variable, the interaction between the elastic-plastic stress of No.

By taking it into no consideration the repugnant forces for safety support conditions and regarding elastic-plastic stress radius asbeing variable,the interaction between the elastic-plastic stress of No.

Influence of horizontal curvature of prestressing tendon in transverse beams on concrete cable-stayed bridge inclined web;

A study on construction of small curvature radius U prestressing tendon;

In view of the phenomenon that the tensioning elongation of sharp curvature radius tendons is slightly greater than the theoretic elongation, this paper analyzes the squeeze effect and strand effect that affect the tensioning elongation of the tendons, and proposes an uniform method for calculating the tensioning elongation.

Research on attrition loss of prestress wire with space curve

Through the test of friction loss of pipe with 6 kinds of prestressed reinforcement for 32m simply supported box girder of Yanmiao bridge of Wuhan-Guangzhou passenger special line,the least square method was used for the analysis,and friction coefficient between prestressed steel rope and pipe wall and pipe deviation coefficient were obtained.