A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Filling concrete continuous rigid frame bridge
The invention relates to a continuous rigid frame bridge filled with concrete and belongs to the technical field of bridge construction. Most of work of concrete construction is converted into bridgetop completion, and the risk that a pumping pipeline is blocked is avoided; aggregate is adopted for vibrating and filling, so the using amount of concrete cement paste is reduced, contradiction between concrete workability and shrinkage is avoided, and influence of the external environment on construction is reduced. A vacuum auxiliary grouting process is adopted, so concrete plumpness of box girder sections can be ensured, and honeycomb pitted surfaces and other diseases are avoided, construction of a large-scale concrete processing system is avoided, and investment is saved; fine aggregateconcrete aggregate can be selected to be laid at the densely-reinforced position, and the concrete construction quality of the densely-reinforced position is improved; arrangement opportunity of prestressed steel beams can be coordinated with a filler, so the conditions that a prestressed pipeline hinders discharging tumbling and a vibrating rod is difficult to insert due to the fact that concretepouring is carried out after steel beams are generally adopted at present are avoided.
本发明涉及一种填注混凝土连续刚构桥，属于桥梁建设技术领域。本发明将混凝土施工的大部分工作转化为桥顶完成，避免了泵送管道堵塞的风险；采用骨料振捣填筑，减少混凝土水泥浆用量，避免了混凝土和易性与收缩量的矛盾，减少了外界环境对施工的影响。采用真空辅助注浆工艺，可以保证箱梁节段的混凝土饱满度，避免出现蜂窝麻面等病害。避免建设大规模的混凝土加工系统，节约投资。钢筋较密的部位可以选择细石混凝土骨料进行布设，改善钢筋密集部位混凝土施工质量。预应力钢束布置时机可以与填料协调，避免目前通常采用的钢束布置结束后再进行混凝土浇筑，发生预应力管道阻碍下料串筒和振捣棒插入困难的情况。
Filling concrete continuous rigid frame bridge
The invention relates to a continuous rigid frame bridge filled with concrete and belongs to the technical field of bridge construction. Most of work of concrete construction is converted into bridgetop completion, and the risk that a pumping pipeline is blocked is avoided; aggregate is adopted for vibrating and filling, so the using amount of concrete cement paste is reduced, contradiction between concrete workability and shrinkage is avoided, and influence of the external environment on construction is reduced. A vacuum auxiliary grouting process is adopted, so concrete plumpness of box girder sections can be ensured, and honeycomb pitted surfaces and other diseases are avoided, construction of a large-scale concrete processing system is avoided, and investment is saved; fine aggregateconcrete aggregate can be selected to be laid at the densely-reinforced position, and the concrete construction quality of the densely-reinforced position is improved; arrangement opportunity of prestressed steel beams can be coordinated with a filler, so the conditions that a prestressed pipeline hinders discharging tumbling and a vibrating rod is difficult to insert due to the fact that concretepouring is carried out after steel beams are generally adopted at present are avoided.
本发明涉及一种填注混凝土连续刚构桥，属于桥梁建设技术领域。本发明将混凝土施工的大部分工作转化为桥顶完成，避免了泵送管道堵塞的风险；采用骨料振捣填筑，减少混凝土水泥浆用量，避免了混凝土和易性与收缩量的矛盾，减少了外界环境对施工的影响。采用真空辅助注浆工艺，可以保证箱梁节段的混凝土饱满度，避免出现蜂窝麻面等病害。避免建设大规模的混凝土加工系统，节约投资。钢筋较密的部位可以选择细石混凝土骨料进行布设，改善钢筋密集部位混凝土施工质量。预应力钢束布置时机可以与填料协调，避免目前通常采用的钢束布置结束后再进行混凝土浇筑，发生预应力管道阻碍下料串筒和振捣棒插入困难的情况。
Filling concrete continuous rigid frame bridge
填注混凝土连续刚构桥
DU HONGLIANG (author) / GAO LIBAO (author) / MAO SUIFENG (author)
2020-07-14
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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