Fully-automatic test method for long-time deformation of nonmetal anti-floating anchor rod

A technology of anti-floating anchor rod and test method, which is applied in the test of basic structure, construction, and basic structure engineering, etc., can solve the problem that the accuracy needs to be studied, achieve convenient testing, simple process, and compensate for manual loading and manual reading. insufficient effect

Inactive Publication Date: 2018-01-09
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the long-term deformation test device or test method of non-metallic anti-floating anchors. Most of them use mathematical models to predict the long-term deformation and pull-out capacity of anti-floating anchors, and the accuracy needs to be studied.

Method used

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  • Fully-automatic test method for long-time deformation of nonmetal anti-floating anchor rod
  • Fully-automatic test method for long-time deformation of nonmetal anti-floating anchor rod
  • Fully-automatic test method for long-time deformation of nonmetal anti-floating anchor rod

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Experimental program
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Effect test

Embodiment

[0022] This embodiment is realized by a metal anti-floating bolt long-term deformation automatic test device, and the specific process is as follows:

[0023] (2) according to the size of anchor rod body 1, carry out drilling to form anchor rod hole 20 at measured rock foundation, and anchor rod hole 20 is perpendicular to ground;

[0024] (2) First install the centering brackets 19 on the outer surface of the anchor rod body 1 at intervals, and the distance between adjacent centering brackets 19 is determined according to the length of the anchorage section of the anchor rod; Insert into the anchor hole 20 until the bottom of the anchor body 1 reaches the bottom of the anchor hole 20, and keep the anchor body 1 vertical during installation;

[0025] (3) Connect the grouting pipe to the outer end of the anchor rod hole 20, and extend the grouting pipe to the bottom of the anchor rod hole 20, and inject the grout along the grouting pipe with the grouting pump. During the grouti...

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Abstract

The invention belongs to the technical field of civil engineering tests and relates to a fully-automatic test method for long-time deformation of a nonmetal anti-floating anchor rod. Firstly, calibration is conducted on a loading sensor and a hydraulic type centre hole jack, so that precision of the loading amount applied on each level in the test process is guaranteed; in the test process, it isrequired to guarantee that all components are in close contact; the counter force of the hydraulic type centre hole jack is controlled through a pressure sensor arranged on an electric oil pump, and the pressure sensor arranged on the electric oil pump can be calibrated through the loading sensor; and by means of an anchor rod test analysis system, the allowable off-load range is set. By means ofthe fully-automatic test method, automatic load replenishment can be achieved; it is guaranteed that the load on each level is constant for a long time; the process of the fully-automatic test methodis simple and convenient to implement; and an adopted device is simple in structure, convenient to test, high in test precision, great in operability and capable of achieving fully-automatic monitoring.

Description

Technical field: [0001] The invention belongs to the technical field of civil engineering tests, and relates to a long-term deformation test method of a non-metallic anti-floating anchor rod, in particular to a fully automatic test method for the long-term deformation of a non-metallic anti-floating anchor rod. Background technique: [0002] With the development and utilization of urban underground space, the foundation burial depth of buildings continues to increase, and the problem of anti-floating has become more and more prominent. The pole has the advantages of strong adaptability to the stratum, dispersing stress, convenient construction, cost saving, and large bearing capacity in hard rock and soil layers. The emergence of glass fiber reinforced polymer (GFRP) bolts has added new means to rock and soil anchoring, especially the excellent corrosion resistance and anti-electromagnetic interference characteristics of GFRP materials, which have solved the problems that pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
Inventor 白晓宇张明义赵天杨杨淑娟牟洋洋陈小钰
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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