大孔径箱桥穿顶多股道 线路加固新技术

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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.

Key words： big-aperture box-framed bridge be pushed through reinforcement of railway new technique

Received: 18 April 1997

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y1997/V14/I3/22

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