Drop-prevention stayed cable and anchorage system capable of being used for high road or bridge

Abstract

The invention provides a cable and an anchorage system used for preventing falling objects in the guardrails of high ways or bridges, comprising rigid guardrails, steel-structured upright posts, prestressing cables, anchoring adaptors, anchoring connection sleeves, anchoring nuts and punched and damping rubber rings of the cables. The steel-structured upright posts are connected with the rigid guardrails through casting or bolts; the prestressing cables pass through the reserved channels in the steel-structured upright posts, and then are anchored on the steel-structured upright posts via theanchoring adaptors, the anchoring connection sleeves and the anchoring nuts. Owning to the reasonable sizes and spatial layouts of the prestressing reinforcements, the reasonable ranges of the pretension and the reliable cable anchoring type, the application of the cable and the anchorage system used for preventing falling objects in the guardrails of high ways or bridges can further improve the use safety of the high ways or the bridges.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a falling object prestressed cable and an anchoring system which can be used for guardrails of highways (or bridges). Background technique [0002] At present, the application of the flexible steel wire rope (or steel strand) guardrail about highway or bridge anti-vehicle collision is not uncommon in domestic and foreign actual projects. In the anti-collision guardrails, handrails and anti-throwing nets of highways (or bridges), the use of flexible steel wire ropes is generally used to directly resist the impact load from road vehicles, and absorb the kinetic energy of vehicle impact through the large deformation of flexible steel wire ropes. To achieve the purpose of reducing vehicle damage and reducing vehicle speed, but its main disadvantage is that it cannot achieve better control of vehicle displacement, so it is only suitable for flat and open ground r...

AI Technical Summary

Problems solved by technology

In the anti-collision guardrails, handrails and anti-throwing nets of highways (or bridges), the use of flexible steel wire ropes is generally used to directly resist the impact load from road vehicles, and absorb the kinetic energy of vehicle impact through the large deformation of flexible steel wire ropes. To achieve the purpose of reducing vehicle damage and reducing vehicle speed, but its main disadvantage is that it cannot achieve better control of vehicle displacement, so it is only suitable for flat and open ground roads. An example of the application of the anti-collision barriers on both sides of the main girder of the bridge; in such areas, anti-overturn (or anti-crossing) rigid barriers (concrete anti-collision piers or steel structure lattice type anti-collision barriers) are often used, but rigid Guardrail collision avoidance is often at the cost of more serious damage to the vehicle impact area, that is, the purpose of changing the driving direction and decelerating is achieved through the destruction energy consumption of the vehicle impact area rather than the destruction energy dissipation of the guardrail itself.

However, this will inevitably lead to a relatively large relative movement between the part of the body higher than the rigid guardrail and the impact area of ​​the body, which is often manifested as cargo overturning or personnel falling after a large truck or bus overturns sideways, and there is a large vehicle impact Risk of secondary loss (or injury)

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