Wang Xinling, Duan Hongwei, LüZhenya. THE EXPERIMENTAL RESEARCH ON FATIGUE PERFORMANCE OF PRESTRESSED CONCRETE GIRDER WITH HRBF500 STEEL BAR FOR HIGH SPEED RAILWAY[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 22-26. doi: 10.13204/j.gyjz201011007
Citation:
Wang Xinling, Duan Hongwei, LüZhenya. THE EXPERIMENTAL RESEARCH ON FATIGUE PERFORMANCE OF PRESTRESSED CONCRETE GIRDER WITH HRBF500 STEEL BAR FOR HIGH SPEED RAILWAY[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 22-26. doi: 10.13204/j.gyjz201011007
Wang Xinling, Duan Hongwei, LüZhenya. THE EXPERIMENTAL RESEARCH ON FATIGUE PERFORMANCE OF PRESTRESSED CONCRETE GIRDER WITH HRBF500 STEEL BAR FOR HIGH SPEED RAILWAY[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 22-26. doi: 10.13204/j.gyjz201011007
Citation:
Wang Xinling, Duan Hongwei, LüZhenya. THE EXPERIMENTAL RESEARCH ON FATIGUE PERFORMANCE OF PRESTRESSED CONCRETE GIRDER WITH HRBF500 STEEL BAR FOR HIGH SPEED RAILWAY[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 22-26. doi: 10.13204/j.gyjz201011007
In this paper,two high-strength prestressed concrete T girders with HRBF500 steel bar have been designed and made.To compare the measured values and the theoretical values of prestress losses,the measured values of prestress losses are more than its theoretical values.Based on the test result under fatigue load,load-stress curves of HRBF500 steel bar and prestressed steel bar and midspan deflection curves of 2 girders are drawn out,and the fatigue performance of high-strength prestressed concrete girder with HRBF500 steel bar is studied.The result shows that HRBF500 steel bar,prestressing strand and midspan deflection in the girders meet the limits of service stage.It also means that the fatigue performance of the prestressed concrete girders with HRBF500 steel bar can still satisfy design requirements after 2.5 millions circles amplitude fatigue loads on the condition that tensile stress of HRBF500 steel bar is more than 150 MPa.
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