将同方向(拉或压)加载的应力—应变曲线中,超过前一次加载最大应力的区段平移相连后得到的曲线称为骨架曲线。也可表述为滞回曲线上同向(拉或压)各次加载的荷载极值点依次相连得到的包络曲线称为骨架曲线。骨架曲线是每次循环加载达到的水平力最大峰值的轨迹,反映了构件受力与变形的各个不同阶段及特性(强度、刚度、延性、耗能及抗倒塌能力等),也是确定恢复力模型中特征点的重要依据。
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通过滞回曲线、骨架曲线分析三种加固试验墩柱的延性性能。
Three reinforcement test piers' ductility is analyzed through hysteric curve and skeleton curve.
此类结构滞回曲线的滞回环饱满,骨架曲线下降段比较平缓;
The load and displacement loop is plump, and the descent part of framework curve is smooth in the structure.
混凝土的反复加载应力-应变曲线不仅包括骨架曲线,还包括卸载及再加载曲线。
Concrete stress-strain curves under cyclic loads include not only envelope curve, but also unloading and re-loading curves.
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