Large-diameter steel pile casing and three-frame type guide frame driving construction method

Abstract

The invention discloses a large-diameter steel pile casing and three-frame type guide frame driving construction method. The method comprises the following steps that four auxiliary piles are driven in for placing a three-frame type guide frame, and connected through I-shaped steel; the three-frame type guide frame is placed to an auxiliary positioning steel pipe pile platform, and coordinates andperpendicularity are adjusted; steel pile castings sink due to the self weight; the steel pile castings on the two sides of the guide frame continue to be driven and are positioned, inserted and driven in the same ways as the first steel pile casting; locking connection between the guide frame and the auxiliary steel pipe piles and parallel connection of upper ports between the steel pipe piles are cut away, the guide frame is lifted up and rotated by 90 degrees and then placed down, and steel pile castings on the two sides in the longitudinal direction are driven in the same way; the guide frame is lifted and opened, and the auxiliary steel pipe piles are dismantled; two pieces of I45b type steel are welded to the top port of a middle guide port of the guide frame to be used as a bearingbeam, the middle guide port is placed down to the driven steel pile casting, the driven steel pile casting is used as a positioning base pile, and other steel pile castings are driven. The large-diameter steel pile casing and three-frame type guide frame driving construction method has the advantage of improving steel pile casting driving precision.

Description

technical field [0001] The invention relates to the technical field of construction of structures on water, and more specifically relates to a construction method for a large-diameter steel casing and a three-frame guide frame. Background technique [0002] During the construction of the highway bridge, the verticality of the steel casing of the pile foundation and the deviation of the center position directly affect whether the pile can be successfully formed and the construction quality of the pile foundation, and affect the lowering of the steel suspension box of the cap. The traditional steel casing guide frame is a cantilever type guide frame, and must be positioned on the platform for construction. On the one hand, the hoisting height of the door crane is required to be greater. On the other hand, the accuracy of steel casing drilling is difficult to control and the construction efficiency is low. Contents of the invention [0003] The purpose of the present inventio...

AI Technical Summary

Problems solved by technology

The traditional steel casing guide frame is a cantilever type guide frame, and must be positioned on the platform for construction. On the one hand, the hoisting height of the door crane is required to be greater. On the other hand, it is difficult to control the accuracy of the steel casing and the construction efficiency is low

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