夹岩水利枢纽工程白甫河高大跨管桥拱圈锚碇结构设计与应用  

Design and application of arch ring anchorage structure of Baifu river-crossing high and large span pipe bridge of Jiayan water conservancy project

作　　者：任明武 徐青松 谭九月 REN Mingwu;XU Qingsong;TAN Jiuyue(Guizhou Water Conservancy Investment(Group)Co.,Ltd.,Guiyang 520001,China;China Gezhouba Group Road&Bridge En-gineering Co.,Ltd.,Yichang 443002,China)

机构地区：[1]贵州省水利投资(集团)有限责任公司,贵州贵阳520001 [2]中国葛洲坝集团路桥工程有限公司,湖北宜昌443002

出　　处：《水利水电快报》2021年第7期34-39,共6页Express Water Resources & Hydropower Information

摘　　要：在夹岩水利枢纽工程白甫河高大跨管桥拱圈施工过程中,为了给拱圈悬臂浇筑节段提供充足的锚固力,又可降低工程施工成本,根据两岸桩基、镇墩等永久构筑物布置,结合施工现场的实际地形、地质条件,采用了混合式锚碇结构和新型预应力锚碇结构。目前管桥拱圈已安全顺利合龙,施工过程中的监测数据表明锚碇结构和管桥拱圈状态正常,说明混合式锚碇结构和新型预应力锚碇结构结构设计合理,施工质量良好,结构安全可靠,并保证了拱圈的施工安全、进度和质量。In the arch ring construction of Baifu river-crossing high and large span pipe bridge of Jiayan water conservancy project,in order to provide sufficient anchoring force for cantilever casting segment of arch ring and reduce construction cost,according to the arrangement of the pile foundation and anchor block on both sides of the river and considering the actual terrain and geological conditions of the construction site,hybrid anchorage structure and new prestressed anchorage structure were adopted.At present the arch ring of pipe bridge has been closed safely and smoothly,the monitoring data during construction showed that the anchorage structure and arch ring of pipe bridge were in normal condition,showing that the design of hybrid anchorage structure and new prestressed anchorage structure was reasonable,the construction quality was good,and the structure was safe and reliable,which ensured the construction safety,progress and quality of the arch.

关 键 词：混合式锚碇结构 预应力锚碇结构 高大跨管桥 拱圈 夹岩水利枢纽工程 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]