Device and method for non-underwater concreting by using drilled pile

A technology of pouring concrete and bored piles, which is applied in construction, foundation structure engineering, etc., can solve the problems of increasing the weight of the pile foundation, entering into the concrete, and complicated operation, so as to save the cost of detection and treatment, and the concrete structure is dense and The effect of simplification of operating procedures

Active Publication Date: 2009-09-30
广州工程总承包集团有限公司
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AI Technical Summary

Problems solved by technology

Since the mud will dilute the concrete, the proportion of concrete used for underwater pouring must be increased by one grade, and generally 20% more cement is used, resulting in high unilateral cost.
In addition, when pouring concrete underwater, there is no other spacer device in the hole, that is, the concrete needs to fill the entire hole when pouring; in fact, the pile foundation made of concrete pouring only needs to ensure that the pile wall of the pile foundation reaches a certain level. The thickness of the pile can already meet the high-strength requirements, and the concrete in the center not only does not play a substantial role, but also increases the weight of the pile foundation
[0003] At the same time, because the way of pouring

Method used

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  • Device and method for non-underwater concreting by using drilled pile
  • Device and method for non-underwater concreting by using drilled pile
  • Device and method for non-underwater concreting by using drilled pile

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Example Embodiment

[0042] The method for non-submerged concrete pouring of bored piles as shown in Figures 4 to 6 is the second embodiment of the present invention, which includes the steps in the following order:

[0043] (1) First, lift the device connected by the drain pipe 3, the inner mold unit 1, the sealing cover 4 and the pipe shoe 2 to the opening of the drilled hole, and connect the upper end of the drain pipe 3 to the pumping device (not shown in the figure) ;

[0044] (2) a funnel 5 that is adapted to the inner mold unit and the borehole orifice is installed on the inner mold unit, and the reinforcement cage 6 is set between the outer wall of the inner mold unit and the inner wall of the drilled hole before starting to pour concrete; Then start the water pumping device and pour concrete 7 into the space between the outer wall of the inner mold unit and the inner wall of the borehole while lowering, and at the same time, the same volume of water 9 is discharged from the drain pipe; when

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Abstract

The invention relates to a device for non-underwater concreting by using a drilled pile, which is characterized by comprising a drain pipe and a tubular internal mold unit, wherein the bottom of the first-section internal mold unit is connected with a sealing cover plate, a pipe boot is connected under the cover plate and adopts a structure of a frustum shell with a downward big head, the outer diameter of the big head of the frustum shell is equal to the diameter of the drilled pile; and the drain pipe passes through a center hole of the sealing cover plate from the internal mold unit to extend into the pipe boot and is fixed on the sealing cover plate to form a casting unit. The invention also relates to a method for non-underwater concreting by using the drilled pile. The invention has simplified operation procedure, can control the quality of the cement and save 20 percent of cement consumption and electric power and is also convenient for detecting the casting quality; especially, the invention ensures that sea water can not contact with a reinforcing cage when a sea pile is casted, and the invention can effectively protect reinforcing steel bars against chloride ion erosion and rustiness.

Description

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Claims

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Application Information

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Owner 广州工程总承包集团有限公司
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