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Detail simulation of R.C. frames under pushover test

机译:R.C.的细节模拟推覆测试框架

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Pushover analysis method is a kind of simplified nonlinear static analysis method to estimate seismic capability of a structure instead of physical tests. Countries in earthquake zone have adopted this approach as a tool for design and assessment purposes. Currently the pushover analysis based on Structural Finite Element approach. Therefore, there are of academic and practical meanings to analyze the pushover method in more details. The purpose of this paper is to present a fine FEM methodology in this structural analysis process to animate cracking propagation of a member and coalescence process of the whole R.C. structure, that is to develop a framework of "Virtual Structural Lab" (VSL) for the prediction of structural behavior both on micro-level and integrity-level. Based on continuum damage mechanics a constitutive model has been proposed to simulate the cracking development of reinforced concrete members. Some strategies were adopted in the program to avoid the problem such as mesh sensitivity, topology redefined, and so on. Virtual reality technology is also applied to compile the whole process of pushover test based on object-oriented programming (OOP) technology. Examples to validate detailed simulation of pushover method and damage theory are presented.
机译:推覆分析法是一种简化的非线性静力分析法,用于估计结构的抗震能力,而不是物理测试。地震带国家已将这种方法用作设计和评估的工具。目前,基于结构有限元方法的推覆分析。因此,更详细地分析下推法具有学术和实践意义。本文的目的是在这种结构分析过程中提出一种精细的有限元方法,以动画化一个构件的裂纹扩展和整个R.C的合并过程。结构,即开发一个“虚拟结构实验室”(VSL)框架,用于在微观级别和完整性级别上预测结构行为。基于连续损伤力学,提出了本构模型来模拟钢筋混凝土构件的开裂发展。该程序中采用了一些策略来避免此类问题,例如网格敏感度,重新定义拓扑等。虚拟现实技术还用于基于面向对象编程(OOP)技术的推入测试的整个过程。给出了验证推覆方法和损伤理论详细仿真的示例。

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