港珠澳大桥浅水区非通航孔桥组合梁体系转换施工工艺及监理控制要点

发布时间：2018-01-19 03:17

本文关键词： 组合梁顶升组合预应力控制　出处：《公路》2017年04期 　论文类型：期刊论文

【摘要】：在港珠澳大桥推行"大型化、标准化、工厂化、装配化"的建设理念下,浅水区非通航孔桥上部结构采用"组合梁"结构型式,通过体系转换(包括简支变连续、组合梁顶升、墩顶桥面板湿接缝纵横向预应力混凝土施工)实现墩顶桥面板负弯矩区域的承载能力。为了确保组合梁体系转换的施工安全和质量,监理通过在施工方案的审批、首件工程的总结、施工过程的严格控制,进行全过程、全要素的实施监理工作,最终确保了组合梁体系转换的施工安全和质量。因此,该项目对组合梁体系转换的施工工艺及安全、质量控制要点,可以为今后组合梁结构的体系转换施工控制提供借鉴与参考。
[Abstract]:Under the construction concept of "large-scale, standardized, factory and assembled", the superstructure of non-navigable bridge in shallow water area adopts "composite beam" structure. Through system transformation (including simple support and continuous, composite beam jacking. In order to ensure the safety and quality of the construction of composite beam system, the bearing capacity of the negative bending region of the pier top deck slab is realized in the construction of wet joint longitudinal and transverse prestressed concrete. Supervision through the examination and approval of the construction plan, the summary of the first project, the strict control of the construction process, the implementation of the whole process, all elements of the supervision work. Finally, the construction safety and quality of the composite beam system conversion are ensured. Therefore, the key points of construction technology, safety and quality control of the composite beam system conversion are discussed in this project. It can provide reference and reference for system conversion construction control of composite beam structure in the future.
【作者单位】：西安方舟工程咨询有限责任公司;
【分类号】：U445.4
【正文快照】： 1　概述方法,然后通过支点升降法使桥面板拉应力降低到在港珠澳大桥推行“大型化、标准化、工厂化、装一个较低的水平,最后施加适量的纵向体内预应力配化”的建设理念下,浅水区非通航孔桥上部结构采钢束作为储备,从而做到拉而不裂。用“组合梁”结构型式。鉴于该桥处于海洋环

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