Direct Path-Integral Scheme for Fatigue Simulation of Reinforced Concrete in Shear
Direct Path-Integral Scheme for Fatigue Simulation of Reinforced Concrete in Shear
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DOI：
10.3151/jact.4.159
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发表时间：
2006
影响因子：
2
通讯作者：
K. Maekawa;Kukrit Toongoenthong;Esayas Gebreyouhannes;T. Kishi
中科院分区：
文献类型：
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作者：
K. Maekawa;Kukrit Toongoenthong;Esayas Gebreyouhannes;T. Kishi
提出了混凝土拉伸、压缩和粗糙裂缝剪切的路径相关疲劳本构模型，并将其直接集成到结构混凝土中实现的时间和变形路径。该方法经实验验证与材料和结构件在高重复力作用下的疲劳寿命一致。还研究了用于疲劳设计的扩展桁架模型的力学背景。模拟了疲劳载荷与初始缺陷的耦合，并讨论了其作为性能评估的多功能工具的适用性。
Path-dependent fatigue constitutive models for concrete tension, compression and rough crack shear are proposed and directly integrated with respect to time and deformational paths actualized in structural concrete. This approach is experimentally verified to be consistent with the fatigue life of materials and structural members under high repetition of forces. The mechanistic background of the extended truss model for fatigue design is also investigated. The coupling of fatigue loads with initial defects is simulated and its applicability is discussed as a versatile tool of performance assessment.