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Large-span basket type tied arch bridge steel box girder incremental launching construction method
The invention relates to an incremental launching construction method for a steel box girder of a large-span basket type tied arch bridge. The incremental launching construction method comprises the main construction steps that (1) a bearing platform and a pier column are constructed; (2) a temporary assembly support is erected; (3) hoisting the steel box girder; (4) assembling the steel box girder and the guide girder; (5) steel box girder pushing and sliding equipment is installed; (6) the steel box girder is pushed to slide by one step pitch; (7) a beam is dropped, and an oil cylinder is retracted; (8) circularly pushing and sliding; (9) pushing sliding equipment is installed on the temporary support sliding platform; and (10) pushing and sliding of the next section of steel box girder are repeated. In the construction process, steel pipe piles do not need to be independently driven in the river to erect a temporary assembly support, the in-river bearing platform is fully utilized to provide a supporting platform for pushing and sliding of the large-span steel box girder in the middle section of the river, the problem that under the complex riverbed geological condition, the large-span steel box pushing and sliding temporary assembly support is difficult to construct is solved, the construction period is short, and the construction efficiency is high. The cost is low.
本发明涉及一种大跨径提篮式系杆拱桥钢箱梁顶推施工方法，主要施工步骤包括：步骤1)、承台、墩柱施工；步骤2)、搭设临时拼装支架；步骤3)、钢箱梁吊装；步骤4)、钢箱梁‑导梁拼装；步骤5)、安装钢箱梁顶推滑移设备；步骤6)、钢箱梁顶推滑移一个步距；步骤7)、落梁、回缩油缸；步骤8)、循环顶推滑移；步骤9)、临时支架滑移平台安装顶推滑移设备；步骤10)、重复进行下一节段钢箱梁顶推滑移。本发明在施工过程中，无需在河中单独打设钢管桩架设临时拼装支架，充分利用河中承台为大跨径钢箱梁在河中段顶推滑移提供了支撑平台，解决了复杂河床地质条件下大跨径钢箱顶推滑移临时拼装支架施工困难的问题，施工周期短，成本低。
Large-span basket type tied arch bridge steel box girder incremental launching construction method
The invention relates to an incremental launching construction method for a steel box girder of a large-span basket type tied arch bridge. The incremental launching construction method comprises the main construction steps that (1) a bearing platform and a pier column are constructed; (2) a temporary assembly support is erected; (3) hoisting the steel box girder; (4) assembling the steel box girder and the guide girder; (5) steel box girder pushing and sliding equipment is installed; (6) the steel box girder is pushed to slide by one step pitch; (7) a beam is dropped, and an oil cylinder is retracted; (8) circularly pushing and sliding; (9) pushing sliding equipment is installed on the temporary support sliding platform; and (10) pushing and sliding of the next section of steel box girder are repeated. In the construction process, steel pipe piles do not need to be independently driven in the river to erect a temporary assembly support, the in-river bearing platform is fully utilized to provide a supporting platform for pushing and sliding of the large-span steel box girder in the middle section of the river, the problem that under the complex riverbed geological condition, the large-span steel box pushing and sliding temporary assembly support is difficult to construct is solved, the construction period is short, and the construction efficiency is high. The cost is low.
本发明涉及一种大跨径提篮式系杆拱桥钢箱梁顶推施工方法，主要施工步骤包括：步骤1)、承台、墩柱施工；步骤2)、搭设临时拼装支架；步骤3)、钢箱梁吊装；步骤4)、钢箱梁‑导梁拼装；步骤5)、安装钢箱梁顶推滑移设备；步骤6)、钢箱梁顶推滑移一个步距；步骤7)、落梁、回缩油缸；步骤8)、循环顶推滑移；步骤9)、临时支架滑移平台安装顶推滑移设备；步骤10)、重复进行下一节段钢箱梁顶推滑移。本发明在施工过程中，无需在河中单独打设钢管桩架设临时拼装支架，充分利用河中承台为大跨径钢箱梁在河中段顶推滑移提供了支撑平台，解决了复杂河床地质条件下大跨径钢箱顶推滑移临时拼装支架施工困难的问题，施工周期短，成本低。
Large-span basket type tied arch bridge steel box girder incremental launching construction method
大跨径提篮式系杆拱桥钢箱梁顶推施工方法
YIN YUAN (author) / SHANG HONGYAN (author) / BAI ZHANSHI (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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