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Super-large-diameter steel skeleton concrete pipe pile deep water foundation and construction method
The invention relates to a super-large-diameter steel skeleton concrete pipe pile deep water foundation and a construction method, and belongs to the technical field of ocean deep water foundations. The deep water foundation is of a hollow structure of which the bottom is sealed, and comprises a steel pile casing, a steel skeleton, a concrete pipe body and a bottom sealing section, wherein the bottom end of the steel pile casing is located below the surface of a seabed, and the steel pile casing provides an outer formwork for pipe body concrete filling; the steel skeleton is arranged in the steel pile casing and a drilled hole, forms a double-wall pipe column with the steel pile casing and the drilled hole, and provides an inner formwork for pipe body concrete filling; concrete of the concrete pipe body is poured between the double walls of the pipe column; and the bottom sealing section is located at the lower end of the foundation, is in sealing connection with the interior of the steel skeleton, and is used for improving the vertical bearing capacity of the foundation. The construction method comprises the steps of steel pile casing sinking, drilling construction, downward putting of the integral steel skeleton, bottom sealing section concrete pouring, pipe body concrete pouring, and pumping of sea water in the deep water foundation. The deep water foundation adopts the hollow structure, thus, the use amount of concrete is decreased, the self weight is lowered, the foundation stress of a base is reduced, and the effective vertical bearing capacity of the deep water foundation is improved.
本申请涉及一种超大直径钢骨架混凝土管桩深水基础及施工方法,属于海洋深水基础技术领域，该深水基础为底部封闭的空心结构，包括：钢护筒，其底端位于海床面以下，为管身混凝土灌注提供外模板；钢骨架，其设置在钢护筒和钻孔内，与二者形成双壁管柱，为管身混凝土灌注提供内模板；混凝土管身，其混凝土灌注在管柱双壁之间；封底段，封底段位于基础下端且密封连接在钢骨架内部，用于提高基础竖向承载力。施工方法为：施沉钢护筒→钻孔施工→整体下放钢骨架→灌注封底段混凝土→灌注管身混凝土→抽干深水基础内部海水。本深水基础采用空心结构节约了混凝土用量，减轻了自重，降低了基底的地基应力，提高了深水基础的有效竖向承载力。
Super-large-diameter steel skeleton concrete pipe pile deep water foundation and construction method
The invention relates to a super-large-diameter steel skeleton concrete pipe pile deep water foundation and a construction method, and belongs to the technical field of ocean deep water foundations. The deep water foundation is of a hollow structure of which the bottom is sealed, and comprises a steel pile casing, a steel skeleton, a concrete pipe body and a bottom sealing section, wherein the bottom end of the steel pile casing is located below the surface of a seabed, and the steel pile casing provides an outer formwork for pipe body concrete filling; the steel skeleton is arranged in the steel pile casing and a drilled hole, forms a double-wall pipe column with the steel pile casing and the drilled hole, and provides an inner formwork for pipe body concrete filling; concrete of the concrete pipe body is poured between the double walls of the pipe column; and the bottom sealing section is located at the lower end of the foundation, is in sealing connection with the interior of the steel skeleton, and is used for improving the vertical bearing capacity of the foundation. The construction method comprises the steps of steel pile casing sinking, drilling construction, downward putting of the integral steel skeleton, bottom sealing section concrete pouring, pipe body concrete pouring, and pumping of sea water in the deep water foundation. The deep water foundation adopts the hollow structure, thus, the use amount of concrete is decreased, the self weight is lowered, the foundation stress of a base is reduced, and the effective vertical bearing capacity of the deep water foundation is improved.
本申请涉及一种超大直径钢骨架混凝土管桩深水基础及施工方法,属于海洋深水基础技术领域，该深水基础为底部封闭的空心结构，包括：钢护筒，其底端位于海床面以下，为管身混凝土灌注提供外模板；钢骨架，其设置在钢护筒和钻孔内，与二者形成双壁管柱，为管身混凝土灌注提供内模板；混凝土管身，其混凝土灌注在管柱双壁之间；封底段，封底段位于基础下端且密封连接在钢骨架内部，用于提高基础竖向承载力。施工方法为：施沉钢护筒→钻孔施工→整体下放钢骨架→灌注封底段混凝土→灌注管身混凝土→抽干深水基础内部海水。本深水基础采用空心结构节约了混凝土用量，减轻了自重，降低了基底的地基应力，提高了深水基础的有效竖向承载力。
Super-large-diameter steel skeleton concrete pipe pile deep water foundation and construction method
一种超大直径钢骨架混凝土管桩深水基础及施工方法
XIAO HAIZHU (author) / QIU YUANXI (author) / HE DONGSHENG (author) / GAO ZONGYU (author) / LIU JUNFENG (author) / FU ZHANGONG (author) / TAN GUOHONG (author) / LI SONGLIN (author) / TANG CHAO (author) / LI HUAYUN (author)
2020-09-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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