Tubular pile pull-out test device with single dowel bar structure

Abstract

The invention discloses a tubular pile pull-out test device with a single dowel bar structure. The tubular pile pull-out test device comprises a base, an upper plate, a dowel bar, a centre hole jack and a main beam, wherein the main beam is arranged on the ground through buttresses; the base is positioned below the main beam and is used for connecting the top of a tubular pile sample; the upper plate is positioned above the main beam; the centre hole jack is arranged on the main beam and props against the bottom of the upper plate; the lower end of the dowel bar is connected with the base; the upper end of the dowel bar penetrates through the centre hole jack and is connected with the upper plate. The tubular pile pull-out test device not only has the advantage that in the prior art, a tubular pile pull-out test device can be recycled after being manufactured at one step, but also solves the problem that the pull-out forces of a plurality of dowel bars are inconsistent, facilitates the improvement of the accuracy of the test result, and avoids the pull-out force detection, comparison and adjustment of the dowel bars, thereby improving the testing efficiency.

Description

technical field [0001] The invention relates to a pipe pile anti-pull single-rod force transmission test device, which belongs to the technical field of performance testing of prestressed concrete pipe piles. Background technique [0002] In the traditional pipe pile pullout test, the common method of connecting the pile and the test beam is to insert a certain amount of steel bars into the pipe pile, and then pour the micro-expansion core-filled concrete. Test; the deficiencies of traditional methods such as long construction period, complex construction process and difficult test operation are well known to those skilled in the art. For this reason, the Chinese invention patent application document with the application publication number CN 102926412 A discloses a pipe pile pullout test device, which includes an upper pull beam, a lower pull beam, a main beam and a jack, and the upper pull beam and the lower pull beam The upper tension beam and the lower tension beam are ...

AI Technical Summary

Problems solved by technology

[0006] The present invention is aimed at the deficiencies of the pipe pile pullout test device in the prior art, and provides a pipe pile pullout single rod force transmission test device, which can overcome the difficulty of the pipe pile pullout test device with a multi-dowel structure. Problems such as the eccentricity of the connection between the upper and lower beams and the uneven force of each dowel bar occur, and there is no need to detect, compare and adjust the actual stress of multiple dowel bars during the test installation, so as to truly realize the anti-corrosion of pipe piles. Simple and fast installation effect of pull-out test device

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