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节段式沉管预应力孔道压浆施工技术

China Harbour Engineering(2015)

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Abstract
针对港珠澳大桥沉管隧道设计使用年限120 a,沉管大埋深、强回淤等特点,论述了沉管预应力孔道压浆工艺及主要的质量控制措施。为保证预应力孔道密封性,从预应力波纹管选材、节段接缝处连接、端头封闭等各个重要环节入手,采取可靠措施满足了密封性要求,通过采用真空辅助压浆技术,保证了孔道压浆的施工质量。
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