Quake-proof anchor rope

Abstract

The invention discloses a quake-proof anchor rope which comprises a free section and an anchoring section, wherein the anchoring section is provided with a quake-proof anchoring device; the quake-proof anchoring device comprises a bearing plate, a quake-proof anchorage device and a permanent anchorage device; a anchor rope passes through the bearing plate and sequentially passes through the quake-proof anchorage device and the permanent anchorage device; the quake-proof anchorage device has a slidable extruding sleeve structure for setting the maximum anchoring force; the quake-proof anchorage device is pressed tightly at the inner side of the bearing plate; the permanent anchorage device is a standard extruding sleeve; a certain distance is arranged between the permanent anchorage and the quake-proof anchorage device; when earthquake occurs, huge impact energy is generated instantly so as to lead the stress of the anchor rope to be increased dramatically; in the invention, when the instant impact force born by the anchor rope exceeds the largest static frictional force between the quake-proof anchorage device and the anchor rope, the anchor rope slides relatively to the quake-proof anchor rope, thus buffering the instant impact force of the earthquake; and simultaneously, the absolute length of the free section of the anchor rope is lengthened, thus further reducing the instant impact force born by the anchor rope, preventing the anchoring system from overloading or the rope body from being snapped, and achieving the purpose of quake proof.

Description

technical field [0001] The invention relates to an anchor cable anchoring structure, in particular to an anti-seismic anchor cable. Background technique [0002] Due to the unique advantages of prestressed anchor cables, they are widely used in road slope reinforcement projects. [0003] Prestressed anchor cables maintain the safety and stability of the slope. Slopes that are actively reinforced with prestressed anchor cables are generally taller and steeper. As anchor cables are used as permanent and concealed projects, the safety and stability of slopes depend to a large extent on the reinforcement of anchor cables. [0004] Although the prestressed anchor cable has a good anchoring effect on the slope, when an earthquake occurs, due to the severe vibration and deformation of the slope, it will generate a huge instantaneous tension on the anchor cable, which may cause the anchor cable to fail and threaten the stability and safety of the slope. . [0005] In the anchor c...

AI Technical Summary

Problems solved by technology

[0004] Although the prestressed anchor cable has a good anchoring effect on the slope, when an earthquake occurs, due to the severe vibration and deformation of the slope, it will generate a huge instantaneous tension on the anchor cable, which may cause the anchor cable to fail and threaten the stability and safety of the slope.

[0005] In the anchor cable anchorage structure, the free section has better seismic performance, but from the perspective of the entire anchorage system, the seismic performance of the prestressed anchor cable is poor, and various forms of failure occur during earthquakes

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