既有运营铁路上跨公路石拱桥的爆破拆除

Exploding demolishment of the stone arch bridge above crossing road on working railway

在既有电气化铁路改造施工中 ,既有公跨铁石拱立交桥的原位改建并不少见 ,如何既保证既有铁路正常运营 ,又能安全地拆除上跨石拱桥 ,是一项比较复杂的工作 ,根据一次实际施工 ,通过对方案选择 ,拱腹拆除 ,既有线路及接触网防护 ,方案实施等的阐述 ,找出施工的关键所在 。

Many stone arch bridges on road cross railway are rebuilt in transforming construction on electric oil railway. It is a complicated work for us to ensure railway 's normal working. Moreover, demolish the stone arch bridge crossing road. According to a practical construction, The paper discusses program selection, arch body demolishment, circult and contact net protection, etc, finds the key of construction, and puts forward a rationalization proposal.