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| Design of High Frame Pier of Left Interconnecting Super Major Bridge of Beijing—Shijiazhuang Passenger Dedicated Line |
| XUN Jia—lei |
| The Third Railway Survey and Design Institute Group Corporation，Tianjin300142，China |
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Abstract Research purposes:The crossing angle between the left interconnecting railway of the Beijing一Shijiazhuang Passenger Dedicated Line and the Beijing一Guangzhou Passenger Dedicated Line is 13°59'. As this angle is small，the frame pier plan was finally adopted after comparing the optional schemes of the frame pier. The 5一20 m unballasted signle line prestressed concrete simple supported box beam was adopted longitudinally. The structure model was built with bridge finite element design software BSAS and Midas to analyze and research whether the various parameters，such as strength and deformation of the high frame pier, could meet the demands of the ballastless track of passenger dedicated line for the deformation or not.
Research conclusions:(1)Compared with the continuous beam plan，the frame pier h:}s the characteristics of strong ability of spanning, agile arrangement and good economical efficiency capability，so it is widely used. It solved the problem of the left interconnecting railway of the Beijing一Shijiazhuang Passenger Dedicated Line crossing the Beijing-Guangzhou Passenger Dedicated Line with small angle.(2)The structure of high frame pier system is simple with clear load bearing. After checking，all the indexes meet the demands of the ballastless track for deformation.(3)The dynamic analysis shows that when the speed of the train is at 240 km/h，the high frame pier can meet the traffic safety and stability requirements. (4)The hight of this high frame pier reaches the 38. 5m and it can provide the reference to the similar works.
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Received: 16 July 2012
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2012, Vol. 29 
