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运用ABAQUS对一个20层高的建筑构建了三维有限元模型,对其进行连续性坍塌分析。壳单元和梁单元用于模拟整体结构的非线性材料特性和非线性几何性能。详细描述了建模过程及方法。将数值结果与试验结果进行对比,具有很好的一致性。运用这个模型,得出了在各种结构中柱坍塌后的结构性能,而且对各个阶段移除柱后的结构性能进行了详述。模型精确反映了这个20层高的建筑在瞬间失去柱支撑时的整体性能,为结构连续性坍塌设计提供了重要参考。
A three-dimensional finite element model was constructed on a 20-storey building using ABAQUS, and was subjected to a continuous collapse analysis. Shell and beam elements are used to simulate the nonlinear material properties and the non-linear geometry of the overall structure. Described in detail the modeling process and method. Comparing the numerical results with the experimental results has good consistency. Using this model, the structural performance of the columns after collapsing in various structures was obtained, and the structural performance after each column was removed was detailed. The model accurately reflects the overall performance of the 20-storey building in the moment of losing column support, which provides an important reference for the structural collapse design.