A bedding slope tunnel portal anti-seismic protection structure and construction method
By installing retaining and protective structures, arch systems, and slope protection components at the tunnel entrance, combined with elastic seismic isolation structures and energy dissipation components, the instability problem of tunnel entrances on bedding slopes under high-intensity earthquakes was solved, and the seismic performance was improved.
CN117189158BActive Publication Date: 2026-06-23NO 7 ENG CO OF CHINA RAILWAY NO 8 ENG GRP CO LTD +4
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Patent Information
- Application Number
- CN202311314797.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-10
- Publication Date
- 2026-06-23
- Estimated Expiration
- 2043-10-10
AI Technical Summary
Technical Problem
Tunnel entrances on bedding slopes are prone to instability and damage under high-intensity earthquakes, and existing technologies are insufficient for effective seismic protection.
Method used
The system combines a retaining and protective structure, an arch system, and a slope protection component with a first elastic seismic isolation structure to form an overall force-bearing system. It also monitors rock strata sliding through energy dissipation components and displacement sensors to reduce the impact of seismic waves.
Benefits of technology
It improves the load-bearing capacity of the tunnel entrance, effectively reduces the impact of seismic waves on the tunnel structure, prevents rock slippage, and avoids instability and damage to the tunnel entrance.
✦ Generated by Eureka AI based on patent content.
Abstract
The application relates to the technical field of tunnel construction, and particularly discloses a bedding slope tunnel portal anti-seismic protection structure and a construction method, an anti-seismic protection structure, which comprises a retaining protection structure arranged outside a tunnel portal, a slope protection assembly arranged along a slope direction and located on a slope, a sleeve arch system arranged at the tunnel portal, and a first elastic shock absorption structure hingedly connected with the sleeve arch system and the retaining protection structure at two ends; the sleeve arch system comprises a sleeve arch structure arranged at the tunnel portal and connected with the retaining protection structure through the first elastic shock absorption structure, and an energy dissipation assembly mounted outside the sleeve arch structure and arranged along a tunnel axial direction. The construction method of the anti-seismic protection structure is also disclosed; the anti-seismic performance of the protection structure can be improved; and the influence of the earthquake action on the tunnel structure can be effectively reduced.
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