高速公路破损现浇箱梁拆除及重建

Demolishing and Reconstructing Damaged Cast-in-place Box Beam of Expressway

京石高速公路K175+132白陀北沟桥是我省正在运营的高速公路中首次进行破损现浇连续箱梁拆除施工的工程。随着我国国民经济的发展,高速公路的通车里程越来越多,相应地许多突发事故对桥梁的损害也将增多,如何尽快地修复受损的桥梁,保障高速公路的畅通,是未来公路工程养护及施工中必须解决的一个问题。本文通过该工程的施工,介绍怎样合理选用现阶段比较成熟的技术,对受损的桥梁现浇连续箱梁上部结构进行快速拆除及重建的经验。

Beijing-Shijiazhuang expressway k175＋132 Baituobeigou Bridge is the first engineering of operating speed way in Hebei Province in which damaged cast-in-place continuous box beams are demolished. With the development of China＇s national economy, mileage of expressway is getting longer and the damage from urgent accidents to bridges is increasing. The problem of how to repair damaged bridges as soon as possible to keep the traffic moving must be solved. With the construction of this engineering, the paper introduces the experience of demolishing and reconstructing quickly the superstructure of damaged cast-in-place continuous box beam with mature technology at this stage.