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自复位混凝土桥墩(SCCP)能够在抵御强震后有效控制残余变形,是一种具备优良抗震性能的新型桥墩体系。该文针对新型自复位混凝土桥墩,提出一种自复位混凝土桥墩损伤演化过程的简化分析模型,系统地描述了循环加载过程中滞回曲线的各个主要环节。在损伤演化分析中,通过引入3个损伤因子γu、γc和γr,阐明循环增大的侧向位移可能导致的3种损伤来源。通过与既有的试验数据的对比分析,验证了该文提出的简化分析模型的准确性和有效性。
Self-resetting concrete piers (SCCP) can effectively control the residual deformation after strong earthquakes. It is a new type of piers with excellent seismic performance. Aiming at the new type of self-resetting concrete piers, a simplified analytical model of the damage evolution process of self-resetting concrete piers is proposed in this paper. The main steps of the hysteresis curve during the cyclic loading process are systematically described. In the damage evolution analysis, we introduced three damage factors γu, γc and γr to clarify the three possible sources of damage caused by the lateral displacement with increasing circulation. By comparing with the existing experimental data, we verify the accuracy and validity of the simplified analytical model proposed in this paper.