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Method for detecting prestress construction quality of anchoring engineering

A construction quality and prestressing technology, which is applied in basic structure engineering, earthwork drilling, bolt installation, etc., can solve problems such as lack of technical means and methods, and effective detection has not yet been carried out

Inactive Publication Date: 2013-08-28
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 to check the anchorage strength of the anchorage section, and the prestressed load value applied to the prestressed construction Whether it meets the requirements of the design and specifications has not yet been effectively tested

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
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Embodiment 1

[0062] For the existing anchoring project that the length of the steel strand used for tensioning meets the required length of tensioning, the method for quality detection of the anchoring project of the present invention comprises the following steps:

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

[0064] a 1 1. Place the clip limiting plate on the working anchor of the existing anchoring project, pass the remaining steel strands of the existing anchoring project through the jack, and place the bottom of the jack on the clip limiting plate;

[0065] a 2. Install the working anchor on the top of the jack, pass the remaining steel strand through the tool anchor, and then insert a tool clip into the tool anchor, and tighten the remaining steel strand;

[0066] Step b: Conduct a pull test:

[0067] b 1 , applying an initial load, so that the tension devices are tightly connected;

[0068] b 2 1. Slowly app...

Embodiment 2

[0071] For the existing anchoring project whose steel strands used for tension detection have been cut and cannot meet the required length of tensioning, it is necessary to install the existing anchoring project quality detection device of the present invention and then adopt the detection method of the present invention method to detect.

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

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

[0074] Such as figure 1 , figure 2 , image 3 As shown, the first tool anchor 21 is a cylindrical plate whose size and shape are basically the same as those of the working anchor 13 in the existing anch...

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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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Patent Type & Authority Patents(China)
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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