Method for detecting prestress construction quality of anchoring engineering

A construction quality and prestressing technology, which is applied in basic structure engineering, earthwork drilling, installation of anchor rods, etc., can solve the problems that have not yet been effectively tested, and there are no technical means and methods

Inactive Publication Date: 2012-01-04
中铁西北科学研究院有限公司深圳南方分院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, there are no technical means and methods for the inspection of the prestressed construction quality of the anchorage project. The current quality inspection of the anchorage project only uses the pull-out test t

Method used

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  • Method for detecting prestress construction quality of anchoring engineering
  • Method for detecting prestress construction quality of anchoring engineering
  • Method for detecting prestress construction quality of anchoring engineering

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0061] Example 1

[0062] For an existing anchoring project in which the length of the steel strand used for tensioning meets the required length for tensioning, the method for detecting the quality of the anchoring project of the present invention includes the following steps:

[0063] Step a: Install the tensioning device using the existing anchor cable tensioning test installation steps:

[0064] a 1 . Arrange the clip limit plate on the working anchor of the existing anchoring project, pass the steel strand remaining from the existing anchor project through the jack, and the bottom of the jack is placed on the clip limit plate;

[0065] a 2 . Install the working anchor on the upper part of the jack, pass the remaining steel strand through the tool anchor, and then place a tool clip in the tool anchor to tighten the remaining steel strand;

[0066] Step b: Perform a pull test:

[0067] b 1 . Apply initial load to make the tensioning devices closely connected;

[0068]...

Example Embodiment

[0070] Example 2

[0071] For the existing anchoring project in which the steel strand used for tension detection has been cut and cannot meet the required length for tensioning, it is necessary to install the quality detection device for the existing anchoring project of the present invention before adopting the detection of the present invention method to detect.

[0072] like figure 1 , 2 As shown, the device for quality inspection of existing anchoring projects of the present invention includes three parts: a connecting part, a supporting part and a limiting part, and each part will be described in detail below with reference to each view.

[0073] The first part: the connecting part, including: the first tool anchor 21 , the second tool anchor 23 and the connecting sleeve 22 .

[0074] like figure 1 , figure 2 , image 3 As shown, the first tool anchor 21 is a cylindrical plate with substantially the same size and shape as the working anchor 13 in the existing an...

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Abstract

The invention relates to a method for detecting the prestress construction quality of anchoring engineering. The method comprises the following steps of: installing a traditional anchor rod (cable) tension tester to conduct a pull experiment; obtaining a pull force value of a current anchor cable, i.e. a prestress load value applied by anchoring engineering construction through mechanical analysis; comparing the prestress load value with an anchoring engineering prestress load value required by design, and calculating a difference thereof; and judging whether the prestress construction quality of the anchoring engineering accords with design specification requirements. Therefore, the invention solves the quality detection problem of the prestress construction of the anchoring engineering and provides an effective solution for detecting quality hidden troubles, such as insufficient prestress load or overstressing load and the like and ensuring the construction quality of the anchoring engineering and the safety of engineering structures.

Description

[0001] The present invention is a divisional application, the application number of the original application is 200710122633X, the application date is July 10, 2007, and the name of the invention is a device and method for quality inspection of existing anchoring projects. technical field [0002] The invention relates to the technical field of detection of construction quality of rock and soil anchoring engineering, in particular to a detection method of prestressed construction quality of anchoring engineering. Background technique [0003] Prestressed anchor cable (rod) reinforcement engineering has been widely used in geotechnical engineering (generally referred to as anchor engineering) such as dam reinforcement, landslide control, high and steep slope reinforcement, underground cavern reinforcement, and deep foundation pit reinforcement. Due to the use of prestressed anchor cable technology in these anchoring projects, a large prestress can be applied to the project to ...

Claims

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Application Information

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IPC IPC(8): E02D33/00E21D21/02
Inventor 王建松朱本珍廖小平刘庆元
Owner 中铁西北科学研究院有限公司深圳南方分院
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