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A platform for research: civil engineering, architecture and urbanism
Construction method for pile sinking near underground diaphragm wall of sheet-pile wharf
The invention relates to a construction method for pile sinking near an underground diaphragm wall of a sheet-pile wharf. The construction method comprises the following steps of hole guiding parameter determination, hole guiding construction, pile sinking, pile splicing and pile conveying. According to the specification of the PHC pipe pile to be used and the plate-shaped wharf structure, hole guiding parameters are determined; the diameter of the guide hole is smaller than that of the PHC pipe pile, and the depth of the guide hole is larger than the bottom elevation of the underground diaphragm wall. According to the construction method, the front wall can be prevented from moving towards the sea due to the soil squeezing effect during pile sinking, meanwhile, the outer side displacement, caused by the soil squeezing effect, of the upper half portion of the front wall is reduced by optimizing the depth of the guide hole, the land side soil pressure of the lower half portion of the front wall is increased, the overall stability of the front wall is improved, and the bidirectional optimization effect is achieved. The bearing capacity of the pile foundation is not obviously lost, the construction convenience is improved, and the construction cost for changing the pile foundation into other pile foundation structures is greatly reduced.
本申请涉及一种板桩码头地下连续墙附近沉桩的施工方法，包括以下步骤：确定引孔参数、引孔施工、沉桩、接桩、送桩。根据待使用的PHC管桩规格、所述板状码头结构，确定引孔参数；引孔直径小于所述PHC管桩直径，引孔深度大于地下连续墙的底部标高。本施工方法能够防止沉桩期间因挤土效应造成前墙向海测位移，同时通过优化引孔深度，减小挤土效应造成前墙上半部分的外侧位移，增大前墙下半部分陆侧的土压力，提升前墙的整体稳定性，起到双向优化作用。桩基承载力没有明显损失，提高了施工便利性，大大降低了改成其他桩基结构的工程造价。
Construction method for pile sinking near underground diaphragm wall of sheet-pile wharf
The invention relates to a construction method for pile sinking near an underground diaphragm wall of a sheet-pile wharf. The construction method comprises the following steps of hole guiding parameter determination, hole guiding construction, pile sinking, pile splicing and pile conveying. According to the specification of the PHC pipe pile to be used and the plate-shaped wharf structure, hole guiding parameters are determined; the diameter of the guide hole is smaller than that of the PHC pipe pile, and the depth of the guide hole is larger than the bottom elevation of the underground diaphragm wall. According to the construction method, the front wall can be prevented from moving towards the sea due to the soil squeezing effect during pile sinking, meanwhile, the outer side displacement, caused by the soil squeezing effect, of the upper half portion of the front wall is reduced by optimizing the depth of the guide hole, the land side soil pressure of the lower half portion of the front wall is increased, the overall stability of the front wall is improved, and the bidirectional optimization effect is achieved. The bearing capacity of the pile foundation is not obviously lost, the construction convenience is improved, and the construction cost for changing the pile foundation into other pile foundation structures is greatly reduced.
本申请涉及一种板桩码头地下连续墙附近沉桩的施工方法，包括以下步骤：确定引孔参数、引孔施工、沉桩、接桩、送桩。根据待使用的PHC管桩规格、所述板状码头结构，确定引孔参数；引孔直径小于所述PHC管桩直径，引孔深度大于地下连续墙的底部标高。本施工方法能够防止沉桩期间因挤土效应造成前墙向海测位移，同时通过优化引孔深度，减小挤土效应造成前墙上半部分的外侧位移，增大前墙下半部分陆侧的土压力，提升前墙的整体稳定性，起到双向优化作用。桩基承载力没有明显损失，提高了施工便利性，大大降低了改成其他桩基结构的工程造价。
Construction method for pile sinking near underground diaphragm wall of sheet-pile wharf
一种板桩码头地下连续墙附近沉桩的施工方法
LIU YOULIANG (author) / ZHANG GUANGMIAO (author) / LIU ZONGGUANG (author) / WANG ZHE (author) / WANG BO (author) / GONG CHI (author)
2024-12-27
Patent
Electronic Resource
Chinese
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