Energy dissipation and seismic mitigation type landslide pile-anchor supporting system suitable for strong earthquake area

Abstract

The invention relates to an energy dissipation and seismic mitigation type landslide pile-anchor supporting system suitable for a strong earthquake area. The energy dissipation and seismic mitigationtype landslide pile-anchor supporting system suitable for the strong earthquake area comprises an anchor cable anti-slide pile; the anchor cable anti-slide pile is composed of an anti-slide pile body,an anchor cable free section and an anchor cable anchoring section; and the anti-slide piles are anchored in a stable rock-soil body; the energy dissipation and seismic mitigation type landslide pile-anchor supporting system suitable for the strong earthquake area further comprises an energy dissipation and seismic mitigation device and a seismic mitigation material layer; the anchor cable free section and the pile top of the anti-slide pile are connected together through an energy dissipation and seismic mitigation device; the seismic mitigation material layer is arranged between the anti-slide pile and a slide body, and the anchor cable anchoring section and the deep stable rock-soil body are bonded into a whole through a drill hole. Compared with the prior art, the energy dissipation and seismic mitigation type landslide pile-anchor supporting system suitable for the strong earthquake area has the advantages that under the earthquake action, through reciprocating deformation of a high-strength compression spring and high-strength U-shaped steel, the energy of earthquake motion is consumed, the allowable deformation of the anchor cable free section is improved, the stress concentration of the anchor head part can be effectively reduced, the anchor head is prevented from losing efficacy, and the rock-soil body and the anchor cable are allowed to deform greatly under the earthquake load.

Description

technical field [0001] The invention relates to the technical field of slope anti-seismic reinforcement and landslide prevention, in particular to an energy-dissipating and shock-absorbing landslide pile-anchor support system suitable for strong earthquake areas. Background technique [0002] my country is a mountainous country with complex geological conditions. In high-intensity areas, earthquakes are an important factor that induces slope geological hazards such as landslides. Geological disasters triggered by earthquakes often have the characteristics of strong suddenness, wide range of disasters, and difficult management. [0003] Slope support system is the main measure to prevent geological disasters such as slope reinforcement and landslides. As a new type of landslide prevention and slope reinforcement measures, the pile-anchor support structure has been used in large and extra-large landslides at home and abroad in recent years due to its safety, reliability, low...

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Problems solved by technology

However, the survey after the Wenchuan earthquake also found that in the high-intensity area, some pile-anchor support systems had failure modes such as anchor head failure, backing plate sinking, and anchor cable breaking.

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