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Installation method for testing tube used for testing internal force of pre-stress tubular pile with slide micrometer

A technology of prestressed pipe pile and installation method, which is applied in the test of foundation structure, construction, foundation structure engineering and other directions, can solve the problem of inability to bury the measuring pipe, etc., and achieves reasonable method design, simple installation method and reliable installation. Effect

Active Publication Date: 2012-11-28
CHINA JK INST OF ENG INVESTIGATION & DESIGN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the prestressed pipe piles are made by centrifugal molding and autoclaved curing, it is impossible to bury the measuring pipes during the production or construction of the prestressed pipe piles, making it difficult to install the measuring pipes in the prestressed pipe piles. This limits the application of sliding micrometry technology in the internal force test of prestressed pipe piles

Method used

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  • Installation method for testing tube used for testing internal force of pre-stress tubular pile with slide micrometer
  • Installation method for testing tube used for testing internal force of pre-stress tubular pile with slide micrometer
  • Installation method for testing tube used for testing internal force of pre-stress tubular pile with slide micrometer

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Experimental program
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Effect test

Embodiment 1

[0051] like figure 1 A method for installing a measuring tube for testing the internal force of a prestressed pipe pile with a sliding micrometer includes the following steps:

[0052] Step 1. Water injection into the prestressed pipe pile: After the construction of the prestressed pipe pile 1 is completed, the pipe pile core of the prestressed pipe pile 1 is filled with water.

[0053] The bottom of the prestressed pipe pile 1 is sealed and welded with a steel pile point 3, and the bottom of the pipe pile core is sealed by the steel pile point 3 to form a water storage chamber with an upper opening. The structure of the completed prestressed pipe pile 1 is See details figure 2 .

[0054] After the construction of the prestressed pipe pile 1 is completed, the height of the pile head reserved above the ground 4 of the prestressed pipe pile 1 is h=d3+d4+△, where d3 is the measurement mark on the top and the adjacent measurement point below it 6, d4 is the outer diameter of t...

Embodiment 2

[0095] like Image 6 As shown, in this embodiment, the difference from Embodiment 1 is: the inner diameter of the prestressed pipe pile 1 described in step 1 is greater than Φ600m; the number of measuring tubes 2 described in step 2 is multiple, and the multiple The structure and size of the measuring tubes 2 are the same; when installing the measuring tubes in step 2, multiple measuring tubes 2 are installed synchronously, and the installation progress of the multiple measuring tubes 2 is the same; The installation methods of the pipes 2 are all the same, and are all installed according to the method described in step 201 to step 203.

[0096] At the same time, in step 2, a plurality of measuring tubes 2 are evenly arranged along the circumferential direction. combine Figure 7 , Figure 8 and Figure 9, in order to ensure the accuracy of the installation positions of the plurality of measuring tubes 2, the plurality of measuring tubes 2 are assembled as a whole through a...

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Abstract

The invention discloses an installation method for a testing tube used for testing the internal force of a pre-stress tubular pile with a slide micrometer. A testing tube which is required to be installed comprises a plastic casing pipe and a plurality of measuring marks. The installation method comprises the following steps: 1, filling a pre-stress tubular pile with water: the pile core of the pre-stress tubular pile is filled with water after the construction of the tubular pile which is required to test the pre-stress is completed; and a water storage cavity with an opening at the top is formed in the bottom of the pre-stress tubular pile after the bottom of the pre-stress tubular pile is sealed through a steel pipe tip; and 2, installing the testing tube: the testing tube is formed by connecting a plurality of testing tube segments from bottom to top, and every two adjacent testing tube segments are hermetically connected with each other. The installation process of the testing tube is as follows: lowering the testing tube segment at the bottom, joining upwards and lowering the previous testing tube segment, and repeating the step of lowering until the lowering process of all the testing tube segments in the testing tube is completed. According to the invention, the installation method has simple steps and convenience in installation, and requires less construction equipment and low cost; and the testing tube installation has high speed and high quality, so that the problem about installing a testing tube in the pre-stress tubular pile is solved effectively.

Description

technical field [0001] The invention belongs to the technical field of testing the internal force of prestressed pipe piles, in particular to a method for installing a measuring tube for testing the internal force of prestressed pipe piles with a sliding micrometer. Background technique [0002] In the early 1980s, Professor K. Kovari of the Department of Rock and Tunnel Engineering at the Swiss Federal University of Technology Zurich proposed the principle of linewise observation, which is different from the principle of pointwise observation represented by strain gauges; and according to Based on the principle of line method monitoring, a series of portable instruments (including sliding micrometers) have been developed to distinguish them from fixed and buried instruments such as strain gauges and multi-point extensometers. Such instruments have applied for patents and entrusted Swiss Solexperts AG to produce them Sales. [0003] The sliding micrometer is a portable high...

Claims

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Application Information

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IPC IPC(8): E02D33/00
Inventor 刘争宏郑建国于永堂张继文
Owner CHINA JK INST OF ENG INVESTIGATION & DESIGN
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