摘要
为确保桥梁结构在强震作用下的安全,对钢筋混凝土桥墩进行了地震响应分析。基于损伤因子建立混凝土损伤塑性模型,考虑混凝土材料在动力荷载作用下的损伤演化,并利用损伤塑性模型对钢筋混凝土桥墩进行地震响应分析,同时分析了损伤塑性模型中膨胀角等参数对桥墩地震响应的影响。分析表明:混凝土损伤塑性模型能够较好地模拟混凝土构件在动力荷载作用下的损伤发展,所以在钢筋混凝土桥墩动力分析中应采用损伤塑性模型描述混凝土材料力学性能。
To analyze the seismic response of reinforced concrete （RC） bridge pier, a plastic-damage model for concrete is established based on damage factors . The evolution of concrete damage under dynamic load is consid- ered. In addition, the influence of model parameters pier is analyzed. It＇ s found that the damage evolution such as dilation angle on the seismic response of RC bridge of RC bridge pier under earthquake action can be better sim- ulated through plastic-damage model, which, therefore, crete in the dynamic analysis of RC bridge pier.
出处
《长江科学院院报》
CSCD
北大核心
2012年第6期79-82,86,共5页
Journal of Changjiang River Scientific Research Institute
关键词
钢筋混凝土桥墩
地震响应分析
损伤塑性模型
损伤因子
RC bridge pier
seismic response analysis
could be adopted to describe mechanical properties of con- plastic-damage model
damage factor
