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Stress Estimation Method of Prestressed Anchor Cable

A prestressed anchor cable and stress technology, which is applied in the field of prestressed anchor cable stress estimation, can solve the problems of poor accuracy of prestressed anchor cable stress estimation, and achieve the effect of improving accuracy

Active Publication Date: 2021-12-24
SHENZHEN GONGKAN GEOTECHN GRP
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for estimating the stress of prestressed anchor cables, aiming at solving the problem of poor accuracy in estimating the stress of prestressed anchor cables in the prior art

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  • Stress Estimation Method of Prestressed Anchor Cable
  • Stress Estimation Method of Prestressed Anchor Cable
  • Stress Estimation Method of Prestressed Anchor Cable

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Embodiment Construction

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0027] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] The same or similar numbers in the drawings of this embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present inventio...

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Abstract

The invention relates to the technical field of stress estimation of prestressed anchor cables, and discloses a method for estimating the stress of prestressed anchor cables, including an anchor gauge and a jack. Load P max =ψF s , F s In order to design the locked load, ψ is the overtension coefficient; (2), the prestressed anchor cable installation clamp, the prestressed anchor cable is normally stretched to P max , record the readings of the anchor force gauge, and calculate the pressure value M according to the side school equation max ; (3), the jack retracts and releases the tension, the clip is self-locking, records the reading of the anchor force meter after locking, and calculates the pressure value M according to the side school equation 0 ; (4), calculate ψ according to the formula; (5), check the next batch M 0 with F s If the difference is more than 5%, then adjust ψ, and so on. Through the cooperation of the jack and the anchor force meter, the stability of the indication value of the jack and the full-range monitoring of the anchor force meter can be used to understand the stress of all prestressed anchor cables more comprehensively and accurately, and improve the accuracy of stress estimation of prestressed anchor cables.

Description

technical field [0001] The patent of the present invention relates to the technical field of prestressed anchor cable stress estimation, in particular, to a prestressed anchor cable stress estimation method. Background technique [0002] Prestressed anchor cable technology is widely used in various geotechnical and underground projects such as slope control, foundation pit support, roadway and tunnel reinforcement, basement and dam and other structures anti-floating or anti-overturning. [0003] At present, in order to determine the working state of the anchor cable, it is necessary to understand its stress; the anchor cable usually uses a pressurized system composed of a through-core hydraulic jack, a hydraulic pump and a pressure gauge to establish prestress by tensioning, and the pressure gauge is read during tensioning. Substitute into the calibration equation or calibration curve to calculate the pressure value, based on which to judge the prestress applied to the ancho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00G01L1/12G01M13/00
CPCG01L5/0028G01L1/127G01M13/00
Inventor 付文光邹俊峰李强孟照辉舒国志李波
Owner SHENZHEN GONGKAN GEOTECHN GRP
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