Anchor rod axial force variation trend prediction method
A technology of changing trends and prediction methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as difficult to predict, complex formation conditions, and uncertainty of surrounding formation structures, so as to avoid calculation errors and prevent Engineering disasters, the effect of improving the degree of accuracy
Active Publication Date: 2018-10-16
DALIAN MARITIME UNIVERSITY
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Problems solved by technology
According to different rock mass strength theories, many scholars have carried out various explorations and explanations on the mechanism of anchor bolts. However, due to the complexity of the interaction mechanism between prestressed anchor bolts and surrounding rocks and the uncertainty of the surrounding stratum structure, there is still no A universal approach that can be applied to all projects
[0003] Due to the problems of multi-parameters, large variables, and complex and difficult-to-predict ground conditions in the application of bolts in foundation pits, simple automatic monitoring cannot provide early warning of upcoming dangers in a timely manner.
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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0040] figure 1 It is a flow chart of the method for predicting the variation trend of the bolt axial force of the present invention, as figure 1 As shown, the method of this embodiment includes:
[0041] Step 101, using a vibrating wire sensor to collect the axial force of the anchor rod, and storing the axial force of the anchor rod;
[0042]...
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The present invention discloses an anchor rod axial force variation trend prediction method. The anchor rod axial force variation trend prediction method comprises the following steps of: obtaining parameters such as an engineering site temperature, an underground water level height, an anchor rod axial force in real time through an inbuilt vibrating wire sensor; optimizing analysis based on a particle swarm algorithm and selecting a historical data steps; measuring the horizontal distance between the excavation position and the anchor position of the anchor rod through an infrared distancer,and measuring the vertical distance between the excavation face and the anchor position of the anchor rod at the same time; taking the measured parameter set as a learning sample, taking the extreme learning machine optimized by the differential evolution algorithm as a calculation method, and predicting the variation trend of the bearing axial force of the anchor rod in next few days. According to the anchor rod axial force variation trend prediction method, the bearing axial force of the stable anchor rod in next few days can be predicted in advance by measuring the related parameters of theengineering field the same day and combining the historical data, the potential engineering danger can be discovered in advance, and the safety coefficient in the foundation pit construction processis greatly improved.
Description
technical field [0001] The invention relates to the technical field of bolt circumferential force measurement, in particular to a method for predicting the variation trend of the bolt axial force. Background technique [0002] The prestressed bolt support technology produces effective radial constraints on the surrounding rock within the scope of the bolt support by applying a high pre-tightening force. The self-weight of the structure is significantly reduced, and the stability of the structure is effectively maintained. According to different rock mass strength theories, many scholars have carried out various explorations and explanations on the mechanism of anchor bolts. However, due to the complexity of the interaction mechanism between prestressed anchor bolts and surrounding rocks and the uncertainty of the surrounding stratum structure, there is still no A universal approach that can be applied to all projects. [0003] Due to the problems of multi-parameters, large...
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Login to View More IPC IPC(8): G06F17/50G06N99/00
CPCG06F30/17G06F2119/06
Inventor 郑帅姜谙男郑世杰杨锐郭树勋董庆波韩朝姜相松李兴盛
Owner DALIAN MARITIME UNIVERSITY