Sounding pipe parallel limiting device

Abstract

The invention provides a sounding pipe parallel limiting device. Sounding pipes are connected with a reinforcement cage in a foundation pile; the steel reinforcement cage comprises vertical ribs parallel to each other, inner stirrups and outer stirrups, wherein the inner stirrups and the outer stirrups are connected with the vertical ribs. The limiting device comprises a double-layer ribbed steelring connected with the vertical ribs and vertical sleeves arranged on the inner side of the steel ring at equal intervals. The sleeves are used for accommodating the sounding pipes. According to thetechnical scheme provided by the invention, by adopting the double-layer ribbed steel ring and the vertical sleeves arranged on the inner side of the double-layer ribbed steel ring, the requirementsof parallel and equidistant installation of the sounding pipes can be met; and the limiting device is annular, enough space is reserved for concrete pouring and vibrating in the center, and detectionsignals cannot be affected. The parallel limiting device is simple in structure and convenient to apply, and can replace the effect of inner stirrups or inner and outer stirrups in reinforcement cagemanufacturing, so that raw materials and material resources and manpower of the inner stirrups are saved, and the cost and the construction complexity are reduced while the performance is improved.

Description

technical field [0001] The invention relates to an installation device for an acoustic measuring tube, in particular to a parallel limiting device for an acoustic measuring tube. Background technique [0002] In the foundation construction of buildings or structures, the sound wave transmission method is usually used to detect whether the pouring quality of the concrete pouring pile is qualified. It is necessary to pre-embed the pipe for the probe of the detection equipment to enter in the pile foundation, that is, the acoustic pipe. When the acoustic tubes are installed, the acoustic tubes along the pile body should be parallel to each other, and the distance between every two adjacent tubes should be the same. In the prior art, the general practice is to directly bind or weld the steel sound measuring tubes on the inner side of the reinforcement cage. Since welding may burn through the acoustic measuring tube or form weld bumps on the inner wall of the tube, affecting the...

AI Technical Summary

Problems solved by technology

Since welding may burn through the acoustic measuring tube or form weld bumps on the inner wall of the tube, affecting the straightness of the acoustic measuring tube or even leaking slurry, it has been seldom used now; The pipes are parallel and equidistant, which makes it difficult to analyze the detection data of the concrete pile by the acoustic transmission method, which may lead to misjudgment or missed judgment

[0003] The patent document of publication number CN104374832A provides a kind of solution for solving the above-mentioned problem, comprises two sleeves and the limit bar that connects two sleeves; The sleeve limit rod between the two pipes is made of steel, and the detection area of ​​the acoustic wave transmission method is the concrete quality between the two pipes. The propagation characteristics of the sound wave in the steel are different from those in the concrete, which may cause the detection signal to be distorted; 2) Specification requirements The sound measuring tubes are arranged in a symmetrical shape inside the steel cage, and there can be 2, 3 or more tubes according to the diameter of the pile. The limit rod of this solution will pass through the center of the steel cage for the arrangement of 2 tubes, and place the steel cage horizontally. Section cut into 2 parts, 3 tubes arrangement Cut the reinforcement cage cross section into 4 small parts, smaller triangular area

When pouring concrete, the above arrangement of acoustic measuring tubes will restrict the spatial arrangement of concrete conduits or chutes and the free movement of concrete vibrating rods, reducing the efficiency of concrete pouring; 3) The entire parallel limiting device is relatively complicated and only considers The spatial positional relationship between the tubes, the spatial positional relationship between the acoustic tube and the main body of the steel cage is not explained, and the acoustic tube and the steel cage are lowered and pre-buried together when the site construction is not realized

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