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Low-strain dual-speed signal average detection method for building pile

A speed signal and detection method technology, applied in the field of building detection, can solve problems such as eccentric moment shear waves that cannot eliminate three-dimensional interference signals, and achieve the effect of accurate pile integrity

Active Publication Date: 2016-11-09
荣垂强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it cannot eliminate the three-dimensional interference signal generated in the knocking point area and the eccentric moment shear wave propagating along the pile body and column

Method used

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  • Low-strain dual-speed signal average detection method for building pile
  • Low-strain dual-speed signal average detection method for building pile
  • Low-strain dual-speed signal average detection method for building pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] figure 1 It is a schematic flow chart of a low-strain double-velocity signal average detection method for building piles in the present invention. The low-strain double-velocity signal average detection method of the building pile body, for convenience of description, hereinafter referred to as "detection method", is applied to the building pile body, and the method includes steps:

[0047] In step S11, the knock point is determined on the side of the building pile or column.

[0048] In step S12, at least two signal acquisition devices are installed at different positions at the same horizontal height on the side of the building pile as measuring points for the building pile.

[0049] Specifically, the signal acquisition device is a probe or a sensor. The signal collecting device is pasted on the side of the building pile by sticky substances such as glue, butter or plasticine.

[0050] In one embodiment of the present invention, the building pile body is an in-serv...

Embodiment 2

[0069] Figure 4 It is a first structural schematic diagram of a low-strain double-velocity signal average detection method for building piles in the present invention. In this embodiment, define the vertical section passing through the central axis of the pile that is perpendicular to the central axis of the tie beam, and the vertical intersection with the side of the pile, that is image 3 The points at 12 o'clock and 6 o'clock and the points extending vertically on the side of the pile are used as knocking points, and the measuring points are set on the horizontal plane of a certain height on the side of the column 20 or foundation pile 10 .

[0070] The vibrating device 200 generates an eccentric knocking action at 12 o'clock or 6 o'clock on the side of the column 20 or the foundation pile 10 , wherein the eccentric knocking is a knock away from the central axis of the column 20 or the foundation pile 10 . Two signal acquisition devices 300 are installed at different posi...

Embodiment 3

[0079] Figure 6 It is a second structural schematic diagram of a low-strain double-velocity signal average detection method for building piles in the present invention. In this embodiment, define the vertical section passing through the central axis of the pile that is perpendicular to the central axis of the tie beam, and the vertical intersection with the side of the pile, that is, the attached image 3 The points at 12 o'clock and 6 o'clock and the points extending vertically on the side of the pile are used as knocking points, and the measuring point (signal collection point) is set at a certain height on the side of the column 20 or foundation pile 10 on the horizontal plane.

[0080] The vibrating device 200 generates an eccentric knocking action at 12 o'clock or 6 o'clock on the side of the column 20 or the foundation pile 10 , wherein the eccentric knocking is a knock away from the central axis of the column 20 or the foundation pile 10 . Two signal acquisition devi...

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Abstract

The invention provides a low-strain dual-speed signal average detection method for a building pile. The low-strain dual-speed signal average detection method for the building pile is applied to the building pile and comprises the steps that a knocking point is determined on the side face of the building pile, and at least two signal collection devices are installed at the different positions of the same horizontal height on the side face of the building pile to be used as testing points for the building pile; when a knocking action of the knocking point is received, a testing point signal from each signal collection device is obtained, and testing curves of the testing points are obtained; and the testing curves of all the testing points are averaged to obtain a detection result for the building pile. By means of the detection result obtained through the detection method, the pile body structural quality and pile bottom integrity of the building pile can be accurately judged.

Description

technical field [0001] The invention relates to the field of building detection, in particular to a low-strain dual-velocity signal average detection method for building piles. Background technique [0002] The existing common low-strain method of pile foundation applies low-energy transient percussion on the surface of the pile top, and the shock wave generated by the percussion propagates downward along the pile body, and will generate reflected waves when encountering the medium surface or the bottom of the pile with wave impedance changes , according to the signal characteristics of the reflected wave to determine the quality of the pile body. This method is aimed at foundation piles where the superstructure has not yet been built and the top surface of the pile is free. For lower foundation piles with a superstructure, this method is no longer applicable due to the fact that the top surface of the pile is not visible. [0003] In the existing low-strain dual-velocity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
CPCE02D33/00E02D2600/10
Inventor 荣垂强
Owner 荣垂强
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