特大桥大跨度系杆拱施工方案设计

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摘 要:系杆拱结构因其自平衡结构体系,抗压性能及竖向荷载力强,已广泛应用于桥梁结构建设中。该文以某特大桥为例,基于桥梁大跨度工程概况及施工特点,对系杆拱设计及施工方案进行探讨,并对系杆拱的重点工程的施工工艺进行描述。旨在为类似工程施工提供参考。
关键词:系杆拱;特大桥;大跨度;施工方案;张拉工艺
中图分类号:U445.4 文献标志码:A 文章编号:2095-2945(2023)35-0117-04
Abstract: Tied arch structure has been widely used in bridge structure construction because of its self-balancing structural system, strong compressive performance and strong vertical load. Taking an extra-large bridge as an example, based on the general situation and construction characteristics of the long-span project of the bridge, this paper discusses the design and construction scheme of the tied arch, and describes the construction technology of the key projects of the tied arch. The purpose is to provide reference for the construction of similar projects.
Keywords: tied arch; extra-large bridge; long span; construction scheme; tension technology
系杆拱结构是拱桥类型的一种,不仅具有拱桥的一般特性,而且融合了梁的优点,是拱受压、梁受弯的结构性能的有机组合,可以同时具备拱和梁共同承受荷载,在桥梁整体架构上也显得更为美观,目前已经广泛应用于铁路、公路等桥梁结构设计中,并且随着我国国民经济发展和桥梁施工技术的不断进步,系杆拱施工工艺和施工技术也在不断创新发展[1-2]。(剩余4825字)