Guidelines for Design of Highway Safety Facilities(JTG/T D81-2017)put forward the method of yield line theory for concrete crash barrier.The yield line analysis method takes into account the dynamic response between the vehicle and the guardrail,as well as the principle of energy conservation,and apply the plastic state to solve the crit-ical length and load lateral resistance standard value of guardrail collision.This article introduces the basic principle and solving formula of concrete guardrail design based on yield line theory.Taking the SS grade reinforced concrete guard-rail of a certain expressway bridge as a case study,the detailed calculation process of yield line theory for guardrail de-sign is introduced.
关键词
防撞护栏/屈服线理论/临界长度/横向碰撞力
Key words
crash barrier/yield line theory/critical length/load lateral resistance standard value
维普
万方数据