摘要
研究海洋环境下钢筋混凝土桥墩抗震性能的影响,通过总结氯离子对钢筋的锈蚀规律,确定钢筋的初始锈蚀时间,运用ABAQUS软件建立钢筋混凝土桥墩的劣化模型;运用Pushover方法分析成桥时,服役50 a和服役100 a桥墩的抗震性能;每一工况以墩高为8 m、10 m、12 m和15 m分析墩高受材料劣化的抗震性能规律。研究结果表明:钢筋混凝土桥墩随着服役时间的增长,墩高为10 m时,服役50 a钢筋混凝土桥墩比成桥时降低了11.74%;服役100 a比成桥时降低了2.78倍。
The seismic performance of reinforced concrete bridge piers in marine environment is studied, through summarizing the law of chloride corrosion of steel, the initial corrosion time of steel bar is determined, and the ABAQUS software is used to establish the deterioration model of reinforced concrete bridge pier; The Pushover method is used to analyze the seismic performance of bridge piers in service for 50 years and for 100 years when the bridge is completed; In the condition of pier height 8m, 10m, 12m and 15m, the law of seismic performance bridge piers with the material degradation under each working condition is analyzed. The research results show that, with the growth of service time, when the pier height is 10m, the seismic performance of concrete bridge piers after 50 years of service is 11.74% lower than the reinforced concrete pier bridge in completion, and the seismic performance of concrete bridge piers after 100 years of service is 2.78 times lower than the bridge in completion.
作者
孙伟帅
李刚
Sun Weishuai, Li Gang(Qingdao University of Technology , Qingdao 266033, Shandong)
出处
《工程建设》
2018年第3期27-34,46,共9页
Engineering Construction
