A large-diameter pile self-reaction force detection device convenient for concrete pouring

Abstract

The invention belongs to the field of the detection of the bearing capacity of a pile foundation and engineering foundation pile, and particularly relates to a large-diameter pile self-reaction force detection device convenient for pouring the concrete. The large-diameter pile self-reaction force detection device comprises an upper steel skeleton and a lower steel skeleton, which are identical in structure, both the upper steel skeleton and the lower steel skeleton are respectively of an annular structure, a circular through hole is formed in the center of each of the upper steel skeleton and the lower steel skeleton, and the annular structure comprises an inner steel ring and an outer steel ring, and connecting steel sheets and V-shaped reinforcing ribs are distributed between the inner steel ring and the outer steel ring at an equidistance interval; a plurality of jacks are fixedly arranged between the upper steel skeleton and the lower steel skeleton, the top and the bottom of each jack respectively push the lower surface of the V-shaped reinforcing ribs of the upper steel skeleton and the upper surface of the V-shaped reinforcing ribs of the lower steel skeleton. By adopting the large-diameter pile self-reaction force detection device, the problem that the concrete is uncompacted to grout surrounding the box body in the pile forming grouting process can be solved, and more accuracy in detection of the bearing capacity of a grouting pile can be realized. By adopting the hollowed steel skeleton structure, the consumption amount of the steel material is saved; a sounding pipe is used for substituting a displacement pipe to determine the displacement of an upper plate and a lower plate, so that the operation procedures are simplified, and the consumption amount of the steel material is further saved.

Description

technical field [0001] The invention relates to the field of detection of foundation pile bearing capacity of pile foundation engineering, in particular to a large-diameter pile self-reflective force detection device which is convenient for concrete pouring. Background technique [0002] At present, a large-diameter pile self-reflexive force detection device is installed in the cast-in-place pile to detect the bearing capacity of the foundation pile. For the lower displacement tube and the acoustic tube used for ultrasonic detection, during the process of pouring concrete into piles, the steel plate has a certain influence on the flow of concrete, which may easily cause the laitance to stay in a certain range above and below the box, and the air is not easy to discharge. Due to the blocking effect of the steel plate and the load box, the concrete around the load box will not be densely filled, and the box body and the concrete force surface will be uneven, which may eventual...

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Problems solved by technology

[0003] The object of the present invention is to: aim at the deficiencies of the prior art, provide a large-diameter pile self-reflexive force detection device that is convenient for concrete pouring, solve the problem that the concrete pouring around the box body is not dense during the pile filling process, and make the cast-in-place pile load-bearing The force detection is more accurate, and at the same time, the hollow steel skeleton structure is used to save the amount of steel; the displacement of the upper and lower plates is measured by using the acoustic measuring tube instead of the displacement tube, which simplifies the operation steps and further saves the amount of steel

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