Abstract：Research purposes: The bridge maintenance and repair is an essential to guaranteeing the service life of the bridge and the traffic safety. The Dongxin Gan River Bridge in Nanchang is a continuous steel truss bridge and it is the largest span four-track railway steel truss bridge in China. This paper studies the scheme for design of the bridge maintenance device featured with safe climbing and crossing span and meeting the bridge requirements for highly lifting， large horizontal span and good anti-electric performance.
Research conclusions: The scheme of the maintenance vehicle presented in this pape is as follows:(1)The maintenance vehicle can travel in walk type by control of the electric plug pin device，with no operation by person on the chord member. The anti rolling device is installed between the the vehicle and the rail to enhance the construction safety and the travel safety. ( 2)The maintenance vehicle can cross the span because the walking wheel box is made in arch shape. In this way，the whole maintenance works can be done by one maintenance vehicle and the maintenance cost can be reduced.(3)The full and safe maintenance can be conducted to the side of the upper arch and web member because the light extension-type suspension cage is used as the side operating platform and the limit protection device is used for the truss. ( 4 ) The technical scheme presented in this paper can provide the reference to the similar works.
China Railway First Survey and Design Institute Group Ltd. The Feasibility Study Report of Xi'an Metro Line 2 [R].Xi' an: China Railway First Survey and Design Institute Group Ltd,2005.
China Railway First Survey and Design Institute Group Ltd. The Feasibility study report of Xi' an Metro Line 3 [R].Xi' an : China Railway First Survey and Design Institute Group Ltd , 2010.
China Railway First Survey and Design Institute Group Ltd. The Feasibility study report of Xi'an Metro Line 2 [R].Xi' an: China Railway First Survey and Design Institute Group Ltd,2012.
[4]施仲衡.地下铁道设计与施工[M].西安:陕西科学技术出版社，2006.
Shi Zhongheng. Desidn and Construction of Subway [M].Xi' an : Shanxi Science and Technology Press , 2006.
[5]GB 50157—2003，地铁设计规范[S].
GB 50157—2003 , Code for Design of Metro[S].
[6]孟凡铁.地铁线路设计研究[J].铁道工程学报，2007 (2):86-87
Meng Fantie. Research on the Design of Metro Line [J].Journal of Railway Engineering Society , 2007 (2 ): 86-87.
2013, Vol. 30 
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