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A platform for research: civil engineering, architecture and urbanism
Large-pipe-diameter river-crossing immersed tube underwater foundation trench excavation construction method
The invention discloses an excavation construction method for a large-pipe-diameter river-crossing immersed tube underwater foundation trench, and belongs to the technical field of construction engineering. The foundation trench excavation construction method comprises the following steps that firstly, surveying and setting out are conducted, a coordinate control network is established, the axis of a pipeline is determined strictly according to a construction drawing, then a jet grouting pile position point and an excavation line of a foundation trench are set out, and the precision meets the design requirement; keeping smooth navigation of the water channel on at least one side; after the dredger is dragged to a construction site by the working boat, the dredger distributes anchors according to the ship position displayed by the shipborne GPS and the established coordinate control network; a foundation trench is excavated by a dredger in a segmented, layered and striped construction mode, a slope of the foundation trench is excavated and constructed in a stepped mode, and sludge generated by excavation of the foundation trench is transported by a sludge barge along a channel; and finally, foundation trench construction detection and supplementary excavation repair are conducted. According to the construction method, construction can be conducted in the offshore complex geographical environment, and the construction quality is guaranteed through strict construction detection and supplementary excavation repair.
本发明公开一种大管径跨江沉管水下基槽开挖施工方法，属于施工工程技术领域。基槽开挖施工方法，包括如下步骤：首先测量放线，建立坐标控制网，严格按施工图先定出管道轴线，再放出旋喷桩桩位点及基槽的开挖线，精度符合设计要求；然后保持至少一侧水上航道的通航畅通；由工作艇将挖泥船拖至施工现场后，挖泥船依据船载GPS定位系统显示的船位，根据建立的坐标控制网进行布锚；挖泥船采用分段、分层和分条施工方式开挖基槽，基槽边坡采用阶梯式开挖施工，泥驳船沿航道运输开挖基槽产生的泥渣；最后进行基槽施工检测及补挖修复。本发明能在近海的复杂地理环境下施工，且通过严格的施工检测及补挖修复保证了施工质量。
Large-pipe-diameter river-crossing immersed tube underwater foundation trench excavation construction method
The invention discloses an excavation construction method for a large-pipe-diameter river-crossing immersed tube underwater foundation trench, and belongs to the technical field of construction engineering. The foundation trench excavation construction method comprises the following steps that firstly, surveying and setting out are conducted, a coordinate control network is established, the axis of a pipeline is determined strictly according to a construction drawing, then a jet grouting pile position point and an excavation line of a foundation trench are set out, and the precision meets the design requirement; keeping smooth navigation of the water channel on at least one side; after the dredger is dragged to a construction site by the working boat, the dredger distributes anchors according to the ship position displayed by the shipborne GPS and the established coordinate control network; a foundation trench is excavated by a dredger in a segmented, layered and striped construction mode, a slope of the foundation trench is excavated and constructed in a stepped mode, and sludge generated by excavation of the foundation trench is transported by a sludge barge along a channel; and finally, foundation trench construction detection and supplementary excavation repair are conducted. According to the construction method, construction can be conducted in the offshore complex geographical environment, and the construction quality is guaranteed through strict construction detection and supplementary excavation repair.
本发明公开一种大管径跨江沉管水下基槽开挖施工方法，属于施工工程技术领域。基槽开挖施工方法，包括如下步骤：首先测量放线，建立坐标控制网，严格按施工图先定出管道轴线，再放出旋喷桩桩位点及基槽的开挖线，精度符合设计要求；然后保持至少一侧水上航道的通航畅通；由工作艇将挖泥船拖至施工现场后，挖泥船依据船载GPS定位系统显示的船位，根据建立的坐标控制网进行布锚；挖泥船采用分段、分层和分条施工方式开挖基槽，基槽边坡采用阶梯式开挖施工，泥驳船沿航道运输开挖基槽产生的泥渣；最后进行基槽施工检测及补挖修复。本发明能在近海的复杂地理环境下施工，且通过严格的施工检测及补挖修复保证了施工质量。
Large-pipe-diameter river-crossing immersed tube underwater foundation trench excavation construction method
一种大管径跨江沉管水下基槽开挖施工方法
YE CONG (author) / NAN YONG (author) / MAO HUI (author) / ZHOU CHENGYAO (author) / LUO HAIFENG (author) / XIA QIYONG (author) / MING TINGSHAN (author) / XU YOU (author) / ZHENG SHUWEN (author)
2024-04-09
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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