A piston rod point-supported self-restoring flexible buffer structure used in shed tunnel engineering

Abstract

The invention provides a piston rod point-supported self-restoring flexible buffer structure for shed tunnel engineering, which includes an intercepting net for intercepting falling rocks, a support rope and a piston rod for supporting the interception net, and a support rope connected to the support rope and the piston rod. The coil spring on the piston rod and the connecting piece that hangs the intercepting net on the support rope, the support rope and the piston rod are connected to the top of the shed cave or the mountain near the shed cave through the anchor support at the bottom. Compared with existing cushion layers such as gravel and rubber tires, the flexible cushion structure of the present invention has a wider application range and more flexible structural layout, and can be used in combination with different types of reinforced concrete shed holes and steel structure shed holes. The flexible buffer structure of the present invention has self-recovery performance, and can be thrown out after falling rocks are impacted, avoiding the accumulation of falling rocks, realizing self-cleaning of falling rocks, and reducing maintenance costs in the later stage. At the same time, the flexible buffer structure of the present invention is assembled on-site by a number of prefabricated steel structural components. The structure is light in weight and easy to install and disassemble. better.

Description

technical field [0001] The invention relates to the technical field of slope protection, in particular to a piston rod point-supported self-restoring flexible buffer structure used in shed tunnel engineering. Background technique [0002] About 2 / 3 of my country's land area is mountainous, and disasters such as falling rocks and landslides have occurred frequently since ancient times. Effective protection of them is related to the safety of people's livelihood and the effective operation of important infrastructure. Sheds are often used for rockfall protection on mountain roads, railways, and tunnel entrances to ensure driving safety. At present, common shed holes mainly include reinforced concrete shed holes and steel structure shed holes. Cushioning, etc. Although the cushioning and protection performance of shed tunnels using the above-mentioned cushion layer has been improved, accidents such as rockfall accumulation, rockfall invasion, and rockfall impact damage to she...

AI Technical Summary

Problems solved by technology

Although the cushioning and protection performance of shed tunnels using the above-mentioned cushion layer has been improved, accidents such as rockfall accumulation, rockfall invasion, and rockfall impact damage to shed tunnels still occur frequently. Take the sand cushion layer often used in reinforced concrete shed tunnels as an example , due to the inelastic deformation of the sand, rockfalls will form accumulations on the top of the shed after the impact, making cleaning and maintenance difficult; at the same time, due to the insufficient buffering deformation capacity of the sand buffer layer, the shed may still be collapsed by the impact

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