Deepwater pile foundation steel casing construction method suitable for bare rock geological conditions

A technology of geological conditions and construction methods, applied in the direction of foundation structure engineering, drilling equipment and methods, sheet pile walls, etc., can solve the problems of difficult construction of pile foundation steel casings, easy slurry leakage at the bottom of casings, slow progress, etc. , to achieve the effect of ensuring the quality of pile foundation construction, short construction period, and less investment in equipment
CN112031017AInactive Publication Date: 2020-12-04NO 1 ENG CO LTD OF CR11BG +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NO 1 ENG CO LTD OF CR11BG
Publication Date
2020-12-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a deepwater pile foundation steel casing construction method suitable for bare rock geological conditions. The method comprises the steps that a construction trestle and a drilling platform are erected; a riverbed foundation is explored and flattened; an outer sleeve water blocking steel casing is lowered and positioned; a rotary drilling rig is matched with a cutter barreldrill bit to conduct grooving on bed rock; a construction casing is embedded into an annular groove position; yellow clay or underwater concrete is lowered through a guide pipe to fill a gap betweenthe construction casing and the bare rock groove position; the outer sleeve steel casing is pulled out; the outer sleeve steel casing and the equipment are moved to the next hole site, and casing construction of other hole sites is completed in a circulating mode in sequence. According to the construction method, pile foundation steel casing construction under the difficult construction conditionsof bare rock, deep water and the like can be rapidly completed, the pile foundation construction casing can accurately extend into the stable bed rock, the pile foundation construction quality is effectively guaranteed, the construction process is safe and reliable, the construction period is short, and economic benefits are good.
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Description

technical field

[0001] The invention relates to the field of bridge pile foundation engineering, in particular to a construction method for steel casings of deepwater pile foundations suitable for bare rock geological conditions. Background technique

[0002] In the field of bridge pile foundation engineering, bridge structures are commonly used to span rivers and rivers. The construction of bridge pile foundations on rivers is common in various projects. According to different geological conditions and hydrological conditions, the difficulty of pile foundation construction in water The degree varies greatly, and it is even more difficult to accurately locate and implant the casing in bare rock geology under deep water conditions; because the river bed cover is shallow and the bedrock of the river bed is directly exposed, the steel casing of the pile foundation cannot be used for vibratory hammer or pile driving The machine is directly lowered into place.

[0003] At presen...

Claims

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