老挝南屯1水电站闸墩预应力锚索施工技术

Construction Technology of Prestressed Anchor Cable for Gate Pier of Nam Theun 1 Hydropower Station in Laos

介绍了老挝南屯1水电站闸墩预应力锚索施工技术。针对工期紧、高空作业、施工设备多、交叉作业、工作面空间限制、大风天气、施工人员多、安全隐患突出等诸多不利因素,从施工布置、锚索设计、施工平台布置、预埋件安装、编索、穿索、测力计安装、设备安装、张拉、真空灌浆、成果分析等阐述,总结了闸墩预应力锚索施工技术经验。

This paper introduces the construction technology of prestressed anchor cable for gate pier of Nam Theun 1 Hydropower Station in Laos. In view of many adverse factors such as tight construction period, high-altitude operation, many construction equipment,cross operation, working face space restriction, windy weather, many construction personnel and prominent potential safety hazards,summarizes the technical experience of prestressed anchor cable construction of gate pier from the aspects of construction layout, anchor cable design, construction platform layout, embedded parts installation, cable braiding, cable threading, dynamometer installation,equipment installation, tensioning, vacuum grouting and result analysis.