摘要
针对上跨既有高速公路的钢箱梁施工,由于其交通量大,为保证通行,施工安全的要求高。尤其是大跨径桥梁,拖拉式顶推往往无法满足现场需求。故采用步履式顶推施工是较优选择。就近年来我国自主研发的步履式顶推技术[1],针对跨既有高速桥梁大跨径钢箱梁施工,简述了其中的施工关键点和难点。
For the construction of steel box girders crossing existing highways,due to high traffic volume,high safety requirements are required to ensure passage.Especially for large-span bridges,the drag jacking is often unable to meet the site requirements.Therefore,the use of walking jacking construction is the preferred choice.This article briefly describes the key points and difficulties in the construction of large-span steel box girders spanning existing high-speed bridges using the walk-type pushing technology independently developed in China in recent years.
出处
《上海公路》
2023年第3期85-92,M0005,M0006,共10页
Shanghai Highways
关键词
步履式顶推
大跨径钢箱梁
跨既有高速
关键技术
walking push
large span steel box girder
crossing existing highways
key technology
