Real-time pre-tightening/alarming anti-seismic pre-stressed anchor rod

Abstract

The invention relates to the technical field of geotechnical engineering protection and particularly relates to a real-time pre-tightening / warning anti-seismic pre-stressed anchor rod. The real-time pre-tightening / warning anti-seismic pre-stressed anchor rod comprises a pull rod, a sleeve head, a bearing plate and a pull wire, wherein the pull rod is provided with a U-shaped cavity corresponding to the pull wire in the axial direction, the pull wire sequentially penetrates through the U-shaped cavity and the sleeve head, and outer ends of the pull wire and the sleeve head are fixedly connected to form a ring shape; the bearing plate is in sliding connection with the pull rod; the sleeve head is fixedly connected with the bearing plate through a driving piece; the bearing plate drives the sleeve head to move in the axial direction; and a lower end of the anchor rod extends into the bedrock. According to the anchor rod, the destructive effect of an earthquake can be resisted to a certain extent, and the pre-tightening effect of the anchor rod before the earthquake can be achieved by tensioning the pull wire and tightening the sleeve head under the condition that the pre-stress is relaxed after the earthquake; and whether the anchor rod fails or not can be early warned in time by detecting the strength of the overhanging pull wire, so stability of the anchoring slope is analyzed.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering protection, in particular to a real-time pre-tightening / warning anti-seismic prestressed bolt. Background technique [0002] In the field of geotechnical engineering, bolts, as one of the most effective forms of support, are widely used in engineering fields such as slopes and tunnels. Among them, the prestressed anchor is a type of anchor structure, and the support effect is achieved by anchoring the dangerous rock mass or sliding mass on the bedrock. During the support process, it is necessary to apply a prestress to maintain the balance of the dangerous rock mass or sliding mass. When an external force acts, the sliding mass is tightly pulled on the bedrock through the joint action of the bolt-mortar interface force and the anchor head. . [0003] In the field of engineering, the anchoring structure is subject to various forces, some of which are relatively small dynamic effe...

AI Technical Summary

Problems solved by technology

At the same time, because the interior of the anchor is unobservable, it is impossible to predict whether the anchor will fail or whether it will still play an anchoring role.

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