结构在地震作用下的损伤状况及其抵御破坏荷载的残余能力，是抗震优化设计和震后工程加固的重要依据。
Damaged condition and residual capability to resist failure load of a structure under seismic action are important for seismic optimum design and post-earthquake strengthening.
建筑结构在地震作用下的破坏主要是由结构的低周疲劳累积损伤引起的。
The main destruction of constructions suffering from earthquake is brought by the accumulated damage of structures under low cycle fatigue.
动力强度破坏是网壳结构在遭受地震时的主要失效形式，准确的失效判别需要以基于材料损伤理论的分析为基础。
The dynamic strength failure is the main seismic failure mode of single-layer reticulated shells, and the prediction of failure load requires the consideration of material damage cumulation.
该模型综合了变形、能量累积以及荷载历程对预应力混凝土构件损伤-破坏的影响，对不同的地震模式有更好的适用性。
This model synthesizes the effect of distortion, energy accumulation, and loading history to damage-failure of prestressed concrete member, thus may be applied to different earthquake patterns.
本文以拉压应力损伤因子为内变量，采用混凝土塑性损伤模型，分析了坝体在地震荷载作用下的刚度退化以及在多维应力状态下拉应力引起的损伤破坏。
In this paper, the stiffness degradation and damage failure in concrete dams subjected to strong ground motion are simulated by plastic-damage model based on damage index variable.
但这样的设计思想往往导致连梁在地震后存在塑性损伤破坏，修复困难且维修费用较大。
However, the yielding of coupling beams will induce damage in structures. Rehabilitation of coupling beams is difficult and the cost is large.
但这样的设计思想往往导致连梁在地震后存在塑性损伤破坏，修复困难且维修费用较大。
However, the yielding of coupling beams will induce damage in structures. Rehabilitation of coupling beams is difficult and the cost is large.
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