上跨既有铁路双曲拱桥拆除研究

摘要

以衡东霞流公铁桥为例，介绍了2种拆除上跨既有铁路营业线钢筋混凝土双曲拱桥的施工步骤及工法———棚架拆除法和机凿拆除法。通过比较，阐明2种施工方法的适用范围。%In this study,two ways of demolition of double arch bridge are introduced.One is the dem-olition of bridge by trellis and the other is the demolition of bridge by chiseling off the foot of the arch.By comparison of these two ways of demolition method the scope of application is elucidated.