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本文将变形与能量双重破坏指标应用到混凝土桥墩结构中,从中探讨用双重破坏指标评定桥墩在地震力作用下损坏程度的可行性。并推导了考虑轴力作用时,结构的力学模型用Clough模型的塑性杆单元刚度矩阵,同时应用直接积分法编制了相应的电算程序,以计算双重破坏指标值及结构的一系列地震反应量。通过计算结果与实验结果的比较分析,证明将该破坏指标应用到桥墩结构中是适宜的。这对旧桥加固及桥梁震后修复有重要意义。
In this paper, the dual damage index of deformation and energy is applied to the concrete bridge pier structure, and the feasibility of using the double failure index to evaluate the damage degree of the bridge pier under the earthquake force is discussed. And deduces the plastic rod element stiffness matrix of the mechanical model of the structure considering the axial force and the corresponding integral calculation method of the direct integral method to calculate a series of seismic response quantities of the double damage index value and structure . By comparing the calculated results with the experimental results, it is proved that it is appropriate to apply the failure index to the pier structure. This is important for the reinforcement of old bridges and post-earthquake repairs of bridges.