大跨度连续梁悬臂灌筑施工中几个技术问题

How To Tackle Some Technical Problems Arisen In Cantilever Pouring Construction of Large-Span Continuous Girder

阐述了连续梁悬臂灌筑施工中钢筋骨架整体和分网片预制、吊装;大体积混凝土一次灌筑成型;大跨、长联连续梁的挠曲和变形控制;施加预应力和防止混凝土开裂;大吨位群锚体系和扁锚应用以及长联、多跨连续梁体系转换等六大关键技术问题.

This article deals with 6 key technical questions arisen in cantilever pouring construction of large-span continuous girder, such as prefabrication and hoisting of steel reinforcenent frame integrally and seperately; one-batch pouring of mass concrete into its shape; deflection & deformation control of large-span continuous girder; application of prestress and avoidance of concrete cracking; application of heavy group anchorage system and flat anchorage; multi-span continuous girder system transfer etc.