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结构多尺度计算技术在保证计算精度的同时,可大幅度地降低计算成本。该文提出了钢筋混凝土柱多尺度模型界面连接和引入等效塑性铰长度的精细化区域界定的方法,并在LS-DYNA程序中二次开发了混凝土多维损伤本构模型,建立了钢筋混凝土柱地震破坏分析的多尺度建模方法。通过对钢筋混凝土柱拟静力试验和单调推覆数值试验的模拟与对比分析,验证了所建立方法的适用性;通过对一钢筋混凝土柱的地震模拟振动台试验的模拟与分析,直观地观察了强震作用下钢筋混凝土柱的混凝土压碎、钢筋屈曲等破坏过程。
The structure of multi-scale computing technology to ensure the accuracy of the calculation, can significantly reduce the computational cost. In this paper, the method of interfacing with the multi-scale model of reinforced concrete columns and introducing the definition of the fine plastic region of the equivalent plastic hinge length is proposed. In the LS-DYNA program, the constitutive model of multi-dimensional damage of concrete is developed twice, Multi-scale modeling method for earthquake damage analysis. Through the simulation and comparative analysis of the numerical simulation of quasi-static test and monotonous pushover of reinforced concrete column, the applicability of the method is verified. Through the simulation and analysis of the seismic simulation shaking table test of a reinforced concrete column, Under the action of strong earthquake, the concrete columns of concrete columns are crushed and the buckling of steel bars is destroyed.