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Highway Concrete Guardrail Lifting Scheme and Safety Performance Verification

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Document pages: 13 pages

Abstract: In order to achieve the oldfence of reuse, improve the safety performance of guardrail, barrier structuredoes not meet the requirements, make full use of the old concrete guardrail onthe basis of heightening, through computer simulation experiment were analyzed,and optimization design, through the real car collision test, make the concreteguardrail after heightening structure satisfies the requirement of the safety performance ofcurrent specification. The results show that the protective performance of thetwo guardrail schemes meets the requirements of the current guardrailevaluation standards through the computer simulation experiment. Through theoptimized design of scheme 1, the actual car crash test proves that theenhanced structure of Minhua TYPE II concrete guardrail can meet therequirements of safety performance evaluation. The research results provide animportant basis for the transformation of the guardrail and the revision of the current design ofexpressway in China.

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