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| Mechanical Analysis of End Block of a Double-track Railway Box Girder During Construction |
| ZHAO Yan-long, LIN Peng-zhen, LIU Feng-kui |
| Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China |
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Abstract Research purposes: In order to satisfy with the pretension and anchorage of prestress, the structure of end section of box beam is always complex. The mechanical properties of end section of box beam need further study at the stages of primary and final pretension, beam erection and secondary dead load action.
Research methods: According to construction of a double lines railway bridge with simple supported PC box beam, the mechanical properties of end section are analyzed and researched during construction. Using solid element method, three dimensions model of finite element of whole box beam is set up. The mechanical properties of end section is compared and analyzed.
Research results: According to different load conditions at construction stage, the mechanical properties of internal and external sides of end section are presented. The noticed problems of design and construction of end section of box beam for double lines railway bridges are investigated.
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Received: 26 October 2005
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2006, Vol. 23 
