Intelligent control resistance increasing large-deformation anchor rod and application method thereof

Abstract

The invention belongs to the technical field of geotechnical engineering and particularly relates to an intelligent control resistance increasing large-deformation anchor rod. The intelligent control resistance increasing large-deformation anchor rod is formed by a resistance increasing device, a thread steel rod body, an anchor rod tray, an anchor rod nut and a pull rope type displacement meter, wherein the resistance increasing device is formed by a resistance increasing device shell, a clamping petal, a force application steel ring, a shape memory alloy rod, an insulating gasket and a fixing nut. The resistance increasing device realizes that the resistance of anchor rod deformation is increased according to requirements when the anchor rod generates large deformation; and meanwhile, a digital signal of a deformation amount of the anchor rod can be fed back according to the pull rope type displacement meter; and size and time of input current of the resistance increasing device are controlled by a computer program so that the effect of intelligently controlling anchor rod deformation-deformation resistance is realized. The intelligent control resistance increasing large-deformation anchor rod disclosed by the invention solves the problem that the deformation resistance-deformation amount of the large-deformation anchor rod is determined by the structure and the material of the anchor rod and the manner is single is solved and a functional space of the anchor rod is enlarged; and the intelligent control resistance increasing large-deformation anchor rod has the very important effect of solving supporting engineering with an unknown surrounding rock deformation property.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to an intelligently controlled resistance-increasing and large-deformation bolt. Background technique [0002] With the development of geotechnical engineering, bolts have played an important role in the support engineering of geotechnical engineering. With the widespread use of bolt support technology, the demand for bolts is different in different engineering problems. , to promote the birth of a large number of different types of bolts. The large deformation bolt is a kind of bolt born for the engineering environment of soft rock and high stress. It has the advantages of large allowable deformation and large deformation resistance. It brings greater convenience and safety, but it is not difficult to find out after careful analysis that the large deformation anchors in the past include constant resistance large deformation anchors and variable resistan...

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Problems solved by technology

[0003] The task of the present invention is to provide an intelligently controlled resistance-increasing large-deformation bolt to solve the singleness of the resistance-displacement curve of the large-deformation bolt in the past, so that the support engineering that does not know much about the characteristics of the surrounding rock can play a very important role. good support

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