钢箱梁步履式多点顶推技术实践

Construction technology application of steel box girder walking type multi-point incremental launching

顶推施工技术在桥梁工程应用中,对跨线、跨河区域交通影响小,具有吊装施工无法替代的优势,在我国桥梁工程中应用较为广泛,尤其是钢箱梁桥顶推施工居多。结合实际工程案例,采用2017MIDAS/Civil对支架及钢箱梁进行建模分析,对步履式多点顶推施工过程进行技术分析和探讨。

In the application of bridge engineering, the jacking construction technology has little impact on the traffic of the cross-line and river-crossing areas, and has the advantage that hoisting construction cannot be replaced. It is widely used in bridge engineering in my country, especially the steel box girder bridge jacking construction mostly. Combined with actual engineering cases, the 2017MIDAS/Civil is used to model and analyze the support and steel box girder, and the technical analysis and discussion of the walking multi-point push construction process are carried out.