英语翻译We present a 3-D finite element (FE) approach to find th
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英语翻译
We present a 3-D finite element (FE) approach to find the optimal distribution of seismic reinforcement force to secure high arch dam-abutment structures against certain earthquake actions.Nonlinear FE time history analysis is performed on the structure to find the seismic responses,using the associated elastic-perfectly plastic material description.The concept of plastic complementary energy is introduced to structural dynamics to quantify the structure’s resistance against the seismic action throughout the time history and to indicate the critical moments when extreme extents of dynamic failure occur.Meanwhile the distributions of the unbalanced force at these critical moments reveal the dominant patterns of the dynamic failure.By the principle of minimum plastic complementary energy,the unbalanced force is just the counterforce of optimal reinforcement force to secure the self-unsupportable structure against the earthquake,which makes the seismic design more targeted and effective.Seismic design analysis is performed on Maji high arch dam-abutment structure.The results could to a large extent guide the seismic design,showing that several structural surfaces lying at the upper abutment are the most seismically vulnerable.This application indicates good applicability of this approach to large-scale projects.
We present a 3-D finite element (FE) approach to find the optimal distribution of seismic reinforcement force to secure high arch dam-abutment structures against certain earthquake actions.Nonlinear FE time history analysis is performed on the structure to find the seismic responses,using the associated elastic-perfectly plastic material description.The concept of plastic complementary energy is introduced to structural dynamics to quantify the structure’s resistance against the seismic action throughout the time history and to indicate the critical moments when extreme extents of dynamic failure occur.Meanwhile the distributions of the unbalanced force at these critical moments reveal the dominant patterns of the dynamic failure.By the principle of minimum plastic complementary energy,the unbalanced force is just the counterforce of optimal reinforcement force to secure the self-unsupportable structure against the earthquake,which makes the seismic design more targeted and effective.Seismic design analysis is performed on Maji high arch dam-abutment structure.The results could to a large extent guide the seismic design,showing that several structural surfaces lying at the upper abutment are the most seismically vulnerable.This application indicates good applicability of this approach to large-scale projects.
我们提出了一个三维有限元的方法找到最优分布的地震安全的高拱坝加固力的结构,对于某些地震的行为.非线性有限元时程分析进行结构地震反应的影响,找到了利用相关的弹塑性材料的描述.塑料互补的概念引入到结构动力学能量,定量研究了结构的抵抗地震作用在整个时间历程,指出的关键时刻,当极端的范围动态故障发生.与此同时,平衡力分布的关键时刻,揭示了这些在主导模式的动态的失败.最小的原则,塑料互补能量不平衡力只是反力最优加固力,以确保在结构,使得对地震的抗震设计更有针对性、实效性.在分析进行抗震设计高拱坝结构.其结果可在很大程度上引导抗震设计,显示几个结构表面躺在上面的该桥的地震最脆弱的.这个应用程序显示该方法的适应性良好的大型项目.
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