【摘 要】
：
In recent years,as the traffic volume and vehicle weights of highway bridges continuously increasing in China,concrete bridges are subject to serious fatigue problems (Wang et al.2012,Wang et al.2013)
【机 构】
：
Key Laboratory for Bridge and Tunnel of Shaanxi Province,Chang'an University,Xi 'an,Shanxi,China
【出 处】
：
The 7th International Conference on Bridge Maintenance, Safe
论文部分内容阅读
In recent years,as the traffic volume and vehicle weights of highway bridges continuously increasing in China,concrete bridges are subject to serious fatigue problems (Wang et al.2012,Wang et al.2013).With service life increasing,concrete material aging and mechanical behavior deterioration will appear gradually,shown in Figures 1 and 2.Affected by service environment and traffic effect,fatigue damage of reinforced concrete (RC) bridges could become prominent after years in-service (Tilly 1988).The initiation and accumulation of fatigue damage will lead to rebar fatigue and fracture failure (Schlifli & Brühwiler 1998).
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