Construction Technology for PC Chord － stayed Pole of Platform Canopy of Xi＇an North Station
NIU Zhen1，JI Jing － yuan1，WANG Li － yun2，LIU Ming － bao2
1． Beijing Construction Engineering Co． Ltd，China Railway Electrification Bureau Group，Beijing 100039，China; 2． Chinese Academy of Building Research，Beijing 100013，China
Abstract：Research purposes: The platform canopy of Xi＇an North Station of Zhengzhou － Xi＇an Passenger Dedicated Line is composed of steel column，cantilever beam and chord － stayed pole． One end of the chord － stayed pole is connected with the steel column and the other end is connected with the canopy． The steel chord － stayed poles are arranged symmetrically on the two sides of the steel column with pre － stressing to form the self － equilibrating system for reducing the length of the canopy and controlling the shape － finding of the structure． According to the project characteristics，the various influence factors on the force of the chord － stayed pole during construction were analyzed，and by simulation analysis of the whole construction process，the important parameters of fitting length of the pole without stress and the tensioning force during construction were determined to control the whole construction process．
Research conclusions: From the analysis it is concluded ( 1) Before construction the simulation analysis of the whole tensioning process should be made to make sure the cable tensioning is in control． ( 2) The real － time and tracing monitoring should be conducted during construction． ( 3) The calculation result should be compared with the monitoring result to prove the validity of the simulation analysis with finite element and the feasibility of the construction plan．
牛震，藉敬元,王立云， 刘明保. 西安北站站台雨棚斜拉杆施工技术[J]. 铁道工程学报, 2012, 29(7): 71-76.
NIU Zhen，JI Jing － yuan，WANG Li － yun，LIU Ming － bao. Construction Technology for PC Chord － stayed Pole of Platform Canopy of Xi＇an North Station. 铁道工程学报, 2012, 29(7): 71-76.
Wang Guoliang， Zhao Hongyu， Luo Jian， etc．Comparison and Selection of Catenary Suspension Installed on the Platform Canopy without Post in Jinan Railway Station［J］． Journal of Railway Engineering Society， 2008( 2) : 77 － 79．
2012, Vol. 29 
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