摘要
研究目的:京沪高铁Ⅵ标段位于江苏省和上海市境内,全长158 km,多次跨越通航河道,其中吴淞江大桥跨越五级通航河道,大桥基础位于水中,埋置深,水中施工周期长,施工环境差、风险大,是全线的重点工程。为了降低施工风险,缩短施工周期,将水中施工变为陆上施工是本项目的关键。如何利用钢板桩作为深水基础止水围堰,将钻孔桩施工和深水承台施工有机地结合在一起,变水中施工为陆上施工,保证深水基础施工进度、安全质量以及航道通航正常,实现京沪高铁控制性工程的节点工期目标。研究结论:通过本工程采用钢板桩围堰结合填芯筑岛技术方案的实施,成功将水中钻孔桩和承台施工改变为陆上施工,降低了施工风险,施工环境等到了较大的改善,加快了施工进度,保证了施工安全和航道运输安全,同时本工程开工早,为本标段其他多处跨江、跨河工程提供了有益的实践经验,同时对上海地区类似的工程建设也具有参考意义。
Research purposes： The Bidding 6 of Beijing - Shanghai High - speed Railway, located in Jiangsu Province and Shanghai City, crosses navigable waterway for several times, with total length of 158 km. The Wusongjiang Bridge crosses the 5 grade navigable waterway with deep buried depth of its foundation, long construction period, bad construction environment and big construction risk, so construction of the bridge is essential to construction of the railway. Turning the construction of the bridge in water to the construction on land, how to us the steel sheet pile as surrounding wall and how to combine bored pile with deep water abutment are the key points to lower the construction risk, shorten the construction period, speed up the construction process, guarantee the construction quality and normal operation of navigable waterway and achieve the expected goal of the controlled project of the railway. Research conclusions：With application of steel sheet pile as surrounding wall along with the technology for island - filling , it was successful to turn the bored pile and abutment in water were to on land, lower the construction risk, improve the construction environment, speed up the construction process and guarantee the construction quality and normal operation of navigable waterway, which can offer the reference to the similar works.
出处
《铁道工程学报》
EI
北大核心
2009年第3期27-32,共6页
Journal of Railway Engineering Society
关键词
钢板桩围堰
水中基坑
施工技术
surrounding wall with steel sheet pile
foundation pit in water
construction technology
