【摘要】 目的分析往复荷载作用下圆钢管煤矸石混凝土纯弯构件的滞回性能和抗震性能,考察不同参数对其抗震性能的影响规律.方法利用数值分析方法,采用非线性有限元分析软件ABAQUS对往复荷载作用下的圆钢管煤矸石混凝土纯弯构件进行计算机模拟分析,通过选取单元、划分网格、设定接触等一系列建模过程,对纯弯构件的荷载—变形关系进行计算.结果计算得到的滞回曲线呈饱满的纺锤形,无明显的下降段,表现出了良好的耗能性能和延性,说明核心煤矸石混凝土与圆钢管协同互补、共同工作,保证了材料性能的充分发挥,抗震性能良好.结论含钢率对纯弯构件的承载力和抗震性能影响较大,随着含钢率的增大,构件的承载力和抗震性能有明显的提高.更多还原

【Abstract】 The hysteretic behavior and seismic capacity of pure bending of the gangue concrete-filled circular steel tube members under reversed loading are analyzed with finite element method.The influences of different parameters on seismic capacity are investigated.The finite element program ABAQUS is used to simulate the gangue concrete-filled circular steel tube members under pure bending,and load versus deformation rela-tionship is calculated by the way of unit selecting,meshing,contact setting.The calculated hysteresis curves are fully spindle-shaped,with no obvious declining segment.It shows a good dissipation energy performance and ductility and indicates that the core gangue concrete and steel complementary can work together and make the full use of their properties and the seismic performance is good.The steel ratio significantly influ-ences member′s ultimate strength and seismic capacity,which are improved obviously with the increase of the steel ratio.更多还原