Test bench for prestressed anchor cable anchorage

A technology of prestressed anchor cables and test benches, which is applied in the field of mechanical test benches, can solve problems such as complex service conditions and inability to test the service life of anchor cables and anchors, and achieve the effect of accurate calculation data

Inactive Publication Date: 2010-06-30
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coupled with the increasingly complex service conditions, relying on the current simple static load tension and relaxation tests can no longer make a reasonable and safe test for the service life of anchor cables and anchors.

Method used

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  • Test bench for prestressed anchor cable anchorage
  • Test bench for prestressed anchor cable anchorage
  • Test bench for prestressed anchor cable anchorage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Such as figure 1 As shown, the prestressed anchor cable anchorage mechanical performance test bench of the present invention is composed of a static load hydraulic pump station 18, a fatigue load loading power source device 19, a test bench clamping device, a data detector 22 and a computer 21. in:

[0017] The net load hydraulic pump station 18 adopts a traditional hydraulic pump station with a working pressure greater than 5MP.

[0018] The fatigue load loading power source device 19 is a device for applying dynamic load to the cable anchorage. The structure of the fatigue load loading power source device 19 is as follows: figure 2 shown. Mainly by motor 24, belt drive 25 (including two pulleys and a belt), crank 26, connecting rod 27, piston pump cylinder 28 and piston 29 form. The motor 24 connects the motor shaft and the first pulley shaft through the flat key, and transmits the torque to the second pulley through the belt; the second pulley rotation shaft is ...

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Abstract

The invention discloses a test bench for a prestressed anchor cable anchorage, which comprises a static load hydraulic pump station, a fatigue load loaded power source device, a test bench clamping device, a data detecting instrument and a computer; when the static load hydraulic pump station is started, a pull force is generated to the prestressed anchor cable anchorage by a piston to carry out a static pressure loading test; and when the fatigue load loaded power source device is started, a dynamic pressure is generated by a piston pump to generate a pulsating load with a certain frequency for the piston to carry out a dynamic pressure loading test. The test bench solves the problem of static load pull force and fatigue detection of the anchor cable anchorage and has accurate and visual data through the computation of a computer program, thereby analyzing and predicting the safe service life of the prestressed anchor cable anchorage and performing an important action on effectively reinforcing geotechnical engineering.

Description

technical field [0001] The invention relates to a mechanical test bench. Background technique [0002] Prestressed anchor cable technology is one of the fastest growing and most widely used slope protection technologies in recent years. Especially for expressways in mountainous areas, where there is a large amount of excavation in subgrade engineering, high cutting slopes, and poor geological conditions, prestressed anchor cable ground beams are generally used, which fix the steel strands in deep stable strata through drilling and grouting Among them, the steel strand is tensioned on the reinforced surface to generate prestress to strengthen the rock and soil mass to achieve a stable state or improve the structure of the internal stress state to ensure the stability of the high slope of the roadbed. [0003] With the development of prestressing technology in our country, prestressed cable anchors have been widely promoted in construction, so the mechanical performance test ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/10G01N3/34G01M13/00
Inventor 张建中胡建明栾兆群宋庆军
Owner SHANDONG UNIV OF SCI & TECH
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