Buffer energy-absorbing wall structure for front of highway tunnel

Abstract

The invention provides a buffer energy-absorbing wall structure for the front of a highway tunnel. The buffer energy-absorbing wall structure comprises a concrete layer, springs and lower washers. Space between the surface of cylinder connectors and gaps is filled with the concrete layer; the cylinder connectors are horizontally arranged on the surface of a wall body; the bottom of the concrete layer below the cylinder connector is fixed to the tops of trapezoidal blocks; the trapezoidal blocks are arranged at intervals, and a damping unit is arranged between every two trapezoidal blocks; a support plate is arranged below the damping units and the trapezoidal blocks; a pressure staggered member is laid at the bottom of the support plate. The cylinder connectors are mutually connected through connections 3 MM in middle width so that the wall surface structure has higher toughness and great rigidity; in case of external impact, impact energy can deform and shift greatly the cylinder connectors on the wall while resilience of the wall is decreased, and damage of an impacted vehicle and damage to the overall structure of the tunnel are decreased.

Description

technical field [0001] The invention belongs to the technical fields of building construction and building structure, and in particular relates to a buffer energy-absorbing wall structure in front of a road tunnel. Background technique [0002] Collision safety is an important indicator of the safety of various vehicles, and the wall in front of the road tunnel is in the stage where accidents occur frequently due to changes in light and darkness and changes in road conditions, and then the construction of the road tunnel is more complicated. It is a vulnerable structure. [0003] Such as the FRP flexible anti-collision wall bridge guardrail of application number CN201710318996.4, the present invention provides an FRP flexible anti-collision wall bridge guardrail, which is characterized in that it includes at least one guardrail segment, and the guardrail segment includes FRP flexible thin The shell block member and the FRP flexible thin shell block member are provided with ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above technical problems, the present invention provides a buffer energy-absorbing wall structure in front of the road tunnel to solve the lack of flexibility of the outer wall of the existing road tunnel, which is prone to collapse after being subjected to a strong external impact, and the wall that is too rigid will also cause The problem of secondary damage caused by the impacted vehicle

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