Abstract：Research purposes: Erecting the steel truss girder with the float tow and jack － in method needs five systems of the corbelling，slideway ，bearing of uplift force，longitudinal movement by jack － in，and direction and position controller． This paper introduces the main technique principle，the technological process，operation steps and the measures of ensuring safety and quality of erecting the steel truss girder with the float toe and jack － in method for providing the reference to construction of similar bridge．
Research conclusions: The float tow and jack － in method is the innovation based on the traditional float toe method． It is different from the traditional float toe method in the power to make the girder longitudinal moving． Namely，it uses the jack － in device at the rear end of steel truss to substitute the traction device in the front of the steel truss，with the features of using simply equipments，easy operation，even velocity，smooth running and ensuring the security．
张云昭. 浮托顶推法架设64 m 钢桁梁技术[J]. 铁道工程学报, 2011, 28(3): 58-63.
ZHANG Yun － zhao. Technology of Erecting 64 m Span Steel Truss Girder with Float Tow and Jack － in Method. 铁道工程学报, 2011, 28(3): 58-63.
Xu Huaxuan． The Possible Technical Problems and Counterm Easures During Construction of Launched Bridges［J］． Journal of Railway Engineering Society，2002( 6) : 13 － 16．
Xu Huaxuan，Shi Fengshou． The Inspecting and Control System for Deflection of Top End of Piers Based on Virtual Instrument［J］． Journal of Railway Engineering Society，2002( 3) : 30 － 33．
2011, Vol. 28 
版权所有 © 2014 《铁道工程学报》编辑部