【摘要】：提出護(hù)欄安全裕度的概念,將安全裕度概念引入護(hù)欄的結(jié)構(gòu)設(shè)計和選型中。采用經(jīng)實車碰撞試驗校核的有限元仿真模型,通過仿真模擬方法分析A級(160 kJ)三波波形梁護(hù)欄和SA級(400 kJ)混凝土護(hù)欄的安全裕度。三波波形梁護(hù)欄的極限防護(hù)能力為中型客車176 kJ,護(hù)欄安全裕度為16 kJ,混凝土護(hù)欄的極限防護(hù)能力為大型貨車440 kJ,護(hù)欄安全裕度為40 kJ,SA級混凝土護(hù)欄安全裕度略大于A級三波波形梁護(hù)欄。安全裕度較高的護(hù)欄更適合應(yīng)用在車型構(gòu)成復(fù)雜、超載超速可能性大、交通事故率較高的高風(fēng)險路段。
[Abstract]:The concept of safety margin of guardrail is put forward, and the concept of safety margin is introduced into the structural design and selection of guardrail. The safety margin of A class (160 kJ) three-wave beam guardrail and SA class (400 kJ) concrete guardrail is analyzed by using the finite element simulation model verified by real vehicle impact test. The ultimate protection capability of the three-wave beam guardrail is the safety margin of 176 kJ, guardrail of medium passenger car the limit protection capability of 16 kJ, concrete guardrail is the safety margin of 440 kJ, guardrail of large truck and the safety margin of kJ, guardrail is 40 kJ,. The safety margin of SA class concrete guardrail is slightly higher than that of A class three wave waveform beam guardrail. The guardrail with high safety margin is more suitable to be used in high risk road sections with complex vehicle structure, high possibility of overloading and overspeed, and high traffic accident rate.
【作者單位】： 交通運(yùn)輸部公路科學(xué)研究院;
【基金】：國家科技支撐計劃(2014BAG01B01)
【分類號】：U417.12
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本文編號：2341222