施工技术 |
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预应力拱板屋面结构施工技术 |
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CONSTRUCTION TECHNIQUE OF PRESTRESSED ARCH SLAB ROOF |
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摘要 江苏某粮库新建单层仓库,跨度21 m,采用先张法预应力拱板屋面。施工中搭设预制平台,解决了场地不足和预制吊装的困难,减少了吊装环节,避免了吊装过程中可能出现的质量隐患。经几年的使用和检测表明,预应力拱板屋面板架合一受力合理,其强度、刚度和抗裂性能均较好。 |
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关键词: 粮库建筑
屋盖结构
预应力拱板
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Abstract:
A new single-storey warehouse is built for a grain depot in Jiangsu. The warehouse adopts pretensioned and prestressed arch slab roof with a span of 21 m. During construction, a prefabricated platform is built to solve the limited construction field and difficulties in prefabrication and lifting. The lifting steps are reduced to avoid potential quality defects which may appear during lifting. After service and inspection for several years, it is proved that prestressed arch slab roof has many favorable characteristics, such as combination of slab and truss, reasonable force distribution, high strength and rigidity, favorable crack resistance, etc.
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Key words: grain depot building roof structure prestressed arch slab |
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