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A platform for research: civil engineering, architecture and urbanism
Construction method of overwater bridge main pier bearing platform
The invention relates to a construction method of an overwater bridge main pier bearing platform. The method comprises the following steps that a guide frame is arranged; inserting and driving positioning steel pipe piles; carrying out rotary drilling slotting guide hole auxiliary construction; inserting and driving the steel pipe piles to the designed elevation; excavating a foundation pit and pouring bottom sealing concrete; constructing a first-layer bearing platform and a ring beam; constructing a second-layer bearing platform; and the other inner supporting systems are dismantled, the combined steel pipe piles are pulled out, and cofferdam construction is completed. According to the construction method of the overwater bridge main pier bearing platform, the foundation pit supporting scheme that the steel pipe piles and the enclosing purlins are used for supporting is adopted in the cofferdam, the method is suitable for a large deepwater foundation, and the waterproof performance, stability and mechanical indexes of the cofferdam all meet the standard requirements. Compared with a steel sheet pile cofferdam, the application condition is wider, and the structural form is safer; the construction process is simple, the construction efficiency is high, and materials can be recycled.
本发明涉及一种水上桥梁主墩承台的施工方法，所述方法包括以下步骤：设置导向架；插打定位钢管桩；旋挖钻开槽引孔辅助施工；插打钢管桩至设计标高；基坑开挖及浇筑封底混凝土；第一层承台及圈梁施工；第二层承台施工；拆除其余内支撑系统及拔除组合钢管桩，完成围堰施工。本发明实施例的水上桥梁主墩承台的施工方法，围堰采用钢管桩加围檩支撑的基坑支护方案，适用于大型深水基础，围堰的防水性能、稳定性、力学指标均符合规范要求。与钢板桩围堰相比适用条件更广，结构形式更安全；施工工艺简单、施工效率高、材料可周转使用。
Construction method of overwater bridge main pier bearing platform
The invention relates to a construction method of an overwater bridge main pier bearing platform. The method comprises the following steps that a guide frame is arranged; inserting and driving positioning steel pipe piles; carrying out rotary drilling slotting guide hole auxiliary construction; inserting and driving the steel pipe piles to the designed elevation; excavating a foundation pit and pouring bottom sealing concrete; constructing a first-layer bearing platform and a ring beam; constructing a second-layer bearing platform; and the other inner supporting systems are dismantled, the combined steel pipe piles are pulled out, and cofferdam construction is completed. According to the construction method of the overwater bridge main pier bearing platform, the foundation pit supporting scheme that the steel pipe piles and the enclosing purlins are used for supporting is adopted in the cofferdam, the method is suitable for a large deepwater foundation, and the waterproof performance, stability and mechanical indexes of the cofferdam all meet the standard requirements. Compared with a steel sheet pile cofferdam, the application condition is wider, and the structural form is safer; the construction process is simple, the construction efficiency is high, and materials can be recycled.
本发明涉及一种水上桥梁主墩承台的施工方法，所述方法包括以下步骤：设置导向架；插打定位钢管桩；旋挖钻开槽引孔辅助施工；插打钢管桩至设计标高；基坑开挖及浇筑封底混凝土；第一层承台及圈梁施工；第二层承台施工；拆除其余内支撑系统及拔除组合钢管桩，完成围堰施工。本发明实施例的水上桥梁主墩承台的施工方法，围堰采用钢管桩加围檩支撑的基坑支护方案，适用于大型深水基础，围堰的防水性能、稳定性、力学指标均符合规范要求。与钢板桩围堰相比适用条件更广，结构形式更安全；施工工艺简单、施工效率高、材料可周转使用。
Construction method of overwater bridge main pier bearing platform
一种水上桥梁主墩承台的施工方法
QIU WANQIN (author) / YANG XIN (author) / CHEN XIAOLI (author) / YANG ZONGSHANG (author) / HE WEIQIANG (author) / LIN HAODONG (author) / CHEN MINGHUI (author) / LI YONG (author) / KANG GUILIANG (author) / MO JINSUI (author)
2024-06-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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