Cast-in-place pile over-filling prevention device and using method of device

Abstract

The invention discloses a cast-in-place pile over-filling prevention device and a using method thereof. The cast-in-place pile over-filling prevention device comprises a reinforcing mesh, a triangular steel sheet, an inelastic pull rope, a pulley and an over-filling prompting instrument. The triangular steel sheet is placed at the position 1.5 m below the designed elevation of the pile top and fixed; the reinforcing mesh is fixed at the top end of the pile foundation reinforcement cage; the two pulleys are fixed at two ends of the reinforcing mesh, the inelastic pull rope is tightly attached to the reinforcing mesh, the starting point of the inelastic pull rope is fixed on the triangular steel sheet, the middle of the inelastic pull rope is sequentially connected with the three pulleys and the reinforcing mesh, and the end point of the inelastic pull rope is fixed on a slide bar of a slide rheostat on the over-filling prompting instrument. When the concrete pouring position reaches the triangular steel sheet, the triangular steel sheet rotates to trigger the pull rope to be pulled down, the sliding rod of the over-pouring prompting instrument moves to a loop comprising the prompting lamp, and the prompting lamp is turned on; the concrete is continuously poured to the reinforcing mesh, and the reinforcing mesh deforms to drive the inelastic pull rope to be continuously pulled down; when the deformation reaches the limit, the prompting lamp of the over-filling prompting instrument is turned off, the sliding rod is connected with a loop comprising a prompting bell, and the prompting bell rings. The mechanical deformation method is adopted, the device is simple and easy to operate, the pile cement pouring construction position can be controlled in time, cost is saved, and construction difficulty is lowered.

Description

technical field [0001] The invention relates to pouring monitoring technology of cast-in-situ piles, in particular to a device for preventing over-filling of cast-in-place piles and a method for using the same. Background technique [0002] In the process of pouring pile foundations at the lower part of the building, it is necessary to control the elevation of concrete pouring according to the construction specifications to meet the construction specifications, so that the construction requirements can be met when the pile heads are broken in the later stage. In the construction process, there are a large number of over-irrigation phenomena, which can greatly meet the construction specifications, but also greatly waste the cost and cause waste. At present, there are three commonly used methods to prevent overfilling: the first is the conventional method of lifting heavy objects by measuring ropes, and obtaining information on the pouring position according to the feeling of ...

AI Technical Summary

Problems solved by technology

The above method has limitations: only based on feeling and experience, the error is large; more construction steps are added, and the operation requirements in the construction process are increased; the cost is high, and it is not suitable for cost control of small projects

This method uses mechanical principles to measure the concrete position, avoiding the cumbersome and inaccurate shortcomings of the traditional method, but the method still has the following shortcomings: (1) The influence of the laitance layer on the device is ignored, which may cause errors; (2) ) from the design elevation to the depth of the orifice has a great influence on the length of the dowel bar

[0004] Chinese patent (patent application number 201910229641.7) discloses "a device for detecting overfilling of concrete and its application method", the structure of which includes an arc-shaped net frame, connecting rods, counterweights, pull ropes, brackets, and gravity detection components; the method It is simple and convenient to use the principle of mechanics to measure the concrete position, but this method still has the following disadvantages: (1) It has high requirements on the construction process, and the device is easily damaged by the conduit; (2) Due to the influence of the laitance layer, the measurement accuracy is not enough

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