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A platform for research: civil engineering, architecture and urbanism
Underwater full pile casing rock-socketed cast-in-place pile construction method
The invention discloses a construction method of an underwater full pile casing rock-socketed cast-in-place pile. Positioning a rotary drilling construction ship; according to the pile testing result, the rotary drilling construction ship is positioned through eight-anchor positioning; performing underwater rock surface treatment: performing drilling construction at eight anchor positions by using a drill rod according to terrains, and performing drilling at least twice in an abrupt slope area by using a step drilling method; a steel casing is installed, specifically, the steel casing is hoisted to penetrate through the guide frame to be installed to the designed position, and the steel casing is temporarily fixed through a wedge-shaped limiting stopper; pile stabilizing concrete is poured, specifically, concrete is poured underwater through a guide pipe between the steel casing and the hole wall, and the wedge-shaped limiting stopper is pulled out; after the water level rises to the set position of the steel casing, a telescopic casing is installed at the top of the steel casing so that the steel casing can be deeper than the water surface, and the rock-socketed cast-in-place pile in the steel casing is drilled to the designed hole bottom elevation; mounting the reinforcement cage and dismounting the steel casing: assembling the reinforcement cage in the steel casing, pouring, and dismounting the telescopic casing.
本发明公开了水下全护筒嵌岩灌注桩施工方法，包括以下步骤；旋挖钻施工船定位；根据试桩结果，采用八锚定位进行旋挖钻施工船定位；水下岩面处理：于八个锚位处，分别根据地势，利用钻杆进行钻孔施工，并在陡坡区域，选用台阶钻孔法，至少分2次进行钻孔；钢护筒安装：起吊钢护筒使其穿过导向架安装至设计位置，并通过楔形限位器临时固定钢护筒；灌注稳桩混凝土：于钢护筒与孔壁之间，通过导管水下浇筑混凝土，拔出楔形限位器；水下灌注桩钻孔：水位上涨至钢护筒设定位置后，于钢护筒顶部安装伸缩式护筒使得钢护筒深出水面，在钢护筒内嵌岩灌注桩钻孔至设计孔底标高；钢筋笼安装和钢护筒拆卸：于钢护筒内组装钢筋笼并浇筑后，拆除伸缩式护筒。
Underwater full pile casing rock-socketed cast-in-place pile construction method
The invention discloses a construction method of an underwater full pile casing rock-socketed cast-in-place pile. Positioning a rotary drilling construction ship; according to the pile testing result, the rotary drilling construction ship is positioned through eight-anchor positioning; performing underwater rock surface treatment: performing drilling construction at eight anchor positions by using a drill rod according to terrains, and performing drilling at least twice in an abrupt slope area by using a step drilling method; a steel casing is installed, specifically, the steel casing is hoisted to penetrate through the guide frame to be installed to the designed position, and the steel casing is temporarily fixed through a wedge-shaped limiting stopper; pile stabilizing concrete is poured, specifically, concrete is poured underwater through a guide pipe between the steel casing and the hole wall, and the wedge-shaped limiting stopper is pulled out; after the water level rises to the set position of the steel casing, a telescopic casing is installed at the top of the steel casing so that the steel casing can be deeper than the water surface, and the rock-socketed cast-in-place pile in the steel casing is drilled to the designed hole bottom elevation; mounting the reinforcement cage and dismounting the steel casing: assembling the reinforcement cage in the steel casing, pouring, and dismounting the telescopic casing.
本发明公开了水下全护筒嵌岩灌注桩施工方法，包括以下步骤；旋挖钻施工船定位；根据试桩结果，采用八锚定位进行旋挖钻施工船定位；水下岩面处理：于八个锚位处，分别根据地势，利用钻杆进行钻孔施工，并在陡坡区域，选用台阶钻孔法，至少分2次进行钻孔；钢护筒安装：起吊钢护筒使其穿过导向架安装至设计位置，并通过楔形限位器临时固定钢护筒；灌注稳桩混凝土：于钢护筒与孔壁之间，通过导管水下浇筑混凝土，拔出楔形限位器；水下灌注桩钻孔：水位上涨至钢护筒设定位置后，于钢护筒顶部安装伸缩式护筒使得钢护筒深出水面，在钢护筒内嵌岩灌注桩钻孔至设计孔底标高；钢筋笼安装和钢护筒拆卸：于钢护筒内组装钢筋笼并浇筑后，拆除伸缩式护筒。
Underwater full pile casing rock-socketed cast-in-place pile construction method
水下全护筒嵌岩灌注桩施工方法
LI SHILIANG (author) / SHI LEIJIE (author) / ZHANG GUANGLIANG (author) / SU AIJUN (author) / LI GEXIN (author) / MAN YICAI (author)
2023-03-07
Patent
Electronic Resource
Chinese
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