Assembly type prestressed highway tunnel crash barrier

A technology for anti-collision guardrails and road tunnels, which is applied in the direction of roads, roads, road safety devices, etc., and can solve problems such as difficult replacement, poor durability of seams, dislocation of the top surface of guardrail assembly, etc., to achieve easy replacement, good protection, and reduce The effect of casualties and economic losses

Inactive Publication Date: 2019-09-20
SHENYANG JIANZHU UNIVERSITY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing guardrail prefabricated assembly method also has problems such as misalignment of the

Method used

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  • Assembly type prestressed highway tunnel crash barrier
  • Assembly type prestressed highway tunnel crash barrier
  • Assembly type prestressed highway tunnel crash barrier

Examples

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Example Embodiment

[0034] Example: an assembled prestressed road tunnel crash barrier, comprising a highway foundation 1, an crash barrier 2, an crash roller 3, a prestressed rigging 4, a bottom sleeve 5, a connecting bolt 6, a roller fixing member 7, Concrete pouring belt 8, expansion bolt 9;

[0035] The anti-collision guardrail 2 is composed of a prefabricated guardrail main body 2-1, a transverse force-bearing steel bar 2-2, a vertical force-bearing steel bar 2-3, a transverse force-bearing shearing steel bar 2-4, a bottom-installed tenon 2-5, and an external force-bearing steel bar 2-5. It consists of eight parts: extension bar cage 2-6, roller installation platform 2-7, ropeway 2-8;

[0036] The main body 2-1 of the prefabricated guardrail is arranged with transverse stress reinforcement bars 2-2, vertical stress reinforcement bars 2-3 and transverse stress shear reinforcement bars 2-4; the bottom-installed tenon 2-5 is located at the bottom of the prefabricated guardrail body 2-1. At the...

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Abstract

The invention provides an assembly type prestressed highway tunnel crash barrier and belongs to the technical field of highway tunnel safety protection. Transverse and longitudinal stressed steel bars and crash barrier shear reinforcements are arranged in the crash barrier and extend out of the bottom of a crash barrier body to form an external extension reinforcement cage. When the crash barrier is connected with a highway foundation, the reinforcement cage reserved at the bottom end of the crash barrier is inserted into a pouring groove reserved in the highway foundation and then high-strength concrete is poured. Bottom sleeves are mounted at the junction between the crash barrier and the highway foundation, and the bottom sleeves, the crash barrier and the highway foundation are connected together through connecting bolts. Prestressed riggings are arranged in the crash barrier. Anti-collision rollers are arranged on the right surface of the crash barrier. The assembly type prestressed highway tunnel crash barrier has the beneficial effects that the assembly type prestressed highway tunnel crash barrier is good in anti-collision performance, good in stress performance, convenient to mount, easy to replace and quick and convenient to install; when a vehicle collides with the surface of the crash barrier, the anti-collision rollers on the outer surface of the crash barrier and the prestressed riggings arranged in the crash barrier body are combined to bear force to achieve the good buffering effect on the collided vehicle.

Description

technical field [0001] The invention belongs to the technical field of road tunnel safety protection, in particular to an assembled prestressed road tunnel anti-collision guardrail. Background technique [0002] At present, tunnel anti-collision guardrails mainly include concrete guardrails, steel guardrails and combined guardrails, among which concrete guardrails and combined guardrails are mainly constructed by on-site pouring. Using the traditional prefabricated guardrail assembly technology, it is easy to cause the height and horizontal direction of the guardrail to be wrong during the assembly process, so the effect is not ideal, and the appearance of the guardrail is uneven; moreover, there is a long-term flooding phenomenon at the splicing position of the guardrail and the main beam, which greatly Reduced structural durability. Moreover, whether it is cast-in-place guardrails or conventional prefabricated assembled guardrails, the technology currently used is relativ...

Claims

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Application Information

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IPC IPC(8): E01F15/08
CPCE01F15/08E01F15/083E01F15/088
Inventor 张延年朱鑫泉
Owner SHENYANG JIANZHU UNIVERSITY
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