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A platform for research: civil engineering, architecture and urbanism
Large-span cable-stayed bridge side span wind-resistant temporary pier flexible connection system and construction method
The invention relates to a large-span cable-stayed bridge side span wind-resistant temporary pier flexible connection system and a construction method. The construction method comprises the following steps that a lifting pier steel pipe pile is put into a foundation pier steel pipe pile from the upper portion of a foundation pier; the pier steel pipe piles are lifted upwards to the set elevation; steel pipe connecting steel plates are welded and fixed; and installing and tensioning the flexible connection hanging belt. The temporary pier structure has the beneficial effects that the fixed foundation pier is arranged at the bottom, the unfixed lifting pier steel pipe pile is inserted into the foundation pier in advance, the height of the temporary pier structure can be set according to needs, and during construction, the lifting pier steel pipe pile only needs to be lifted to the designed elevation through the top main beam provided with the lower anchor point and then is fixed; the temporary pier structure with the required height can be obtained; the temporary piers are connected with the steel box girder through the flexible connection hanging belts, so that the lateral displacement in the cantilever assembling process of the steel box girder is effectively limited, and meanwhile, the vertical displacement of the girder section is not limited.
本发明涉及一种大跨度斜拉桥边跨抗风临时墩软连接体系及施工方法，包括以下步骤：提升墩钢管桩从基础墩上方向下放入基础墩钢管桩内；将墩钢管桩向上提升至设置标高；钢管连接钢板焊接固定；安装软连接吊带并拉紧。本发明的有益效果是：通过在底部设置固定的基础墩，基础墩内预先插入未固定的提升墩钢管桩，使临时墩结构的高度可以根据需要设置，施工时，只需通过设有下锚点的顶部主梁将提升墩钢管桩提升至设计标高再进行固定，即可得到所需高度的临时墩结构；利用软连接吊带将临时墩与钢箱梁连接，在有效限制钢箱梁悬臂拼装过程中侧向位移的同时，不限制梁段竖向位移。
Large-span cable-stayed bridge side span wind-resistant temporary pier flexible connection system and construction method
The invention relates to a large-span cable-stayed bridge side span wind-resistant temporary pier flexible connection system and a construction method. The construction method comprises the following steps that a lifting pier steel pipe pile is put into a foundation pier steel pipe pile from the upper portion of a foundation pier; the pier steel pipe piles are lifted upwards to the set elevation; steel pipe connecting steel plates are welded and fixed; and installing and tensioning the flexible connection hanging belt. The temporary pier structure has the beneficial effects that the fixed foundation pier is arranged at the bottom, the unfixed lifting pier steel pipe pile is inserted into the foundation pier in advance, the height of the temporary pier structure can be set according to needs, and during construction, the lifting pier steel pipe pile only needs to be lifted to the designed elevation through the top main beam provided with the lower anchor point and then is fixed; the temporary pier structure with the required height can be obtained; the temporary piers are connected with the steel box girder through the flexible connection hanging belts, so that the lateral displacement in the cantilever assembling process of the steel box girder is effectively limited, and meanwhile, the vertical displacement of the girder section is not limited.
本发明涉及一种大跨度斜拉桥边跨抗风临时墩软连接体系及施工方法，包括以下步骤：提升墩钢管桩从基础墩上方向下放入基础墩钢管桩内；将墩钢管桩向上提升至设置标高；钢管连接钢板焊接固定；安装软连接吊带并拉紧。本发明的有益效果是：通过在底部设置固定的基础墩，基础墩内预先插入未固定的提升墩钢管桩，使临时墩结构的高度可以根据需要设置，施工时，只需通过设有下锚点的顶部主梁将提升墩钢管桩提升至设计标高再进行固定，即可得到所需高度的临时墩结构；利用软连接吊带将临时墩与钢箱梁连接，在有效限制钢箱梁悬臂拼装过程中侧向位移的同时，不限制梁段竖向位移。
Large-span cable-stayed bridge side span wind-resistant temporary pier flexible connection system and construction method
一种大跨度斜拉桥边跨抗风临时墩软连接体系及施工方法
XIE DONGSHENG (author) / WENG MENG (author) / LUO GUO (author) / WU YE (author)
2024-07-30
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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