Abstract：Two kinds of new reinforce techniques for multiline railway under traffic are in?troduced .The techniques are adopted when big-aperture box-framed under-cross bridge was pushed through multiline railway by use of joist and other light simple member dexterously. The practices have proved that these techniques have many advantages ： economical and prac?tical 9 easy to operate，high-cofficient of safety. So, it is worth popularizing.
谢新民，刘保生，陈长献. 大孔径箱桥穿顶多股道 线路加固新技术[J]. 铁道工程学报, 1997, 14(3): 22-27.
Xie Xinmin Liu Baosheng Chen Changxian. NEW REINFORCE TECHNIQUES FOR MULTILINE RAILWAY WHEN BIG-APERTURE BOX-FRAMED UNDER-CROSS BRIDGE BE PUSHED THROUGH IT. Journal of Railway Engineering Society, 1997, 14(3): 22-27.
1997, Vol. 14 
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