【摘要】 选用通用有限元分析软件ANSYS中的混凝土实体单元SOLID65对周边简支双向密肋楼盖进行了试验模拟。编写了钢筋混凝土楼板的APDL语言分析程序,并对密肋楼盖进行了非线性全过程分析。将数值解与试验结果中的极限荷载、最大应力值和荷载-位移曲线进行了比较分析。在权衡了计算精度与计算机时之间矛盾的基础上,总结了该有限元模型的数值模拟结果与试验结果吻合较好,从而验证了钢筋混凝土楼盖结构应用实体单元进行非线性有限元分析的合理性。更多还原

【Abstract】 As a current software for finite element analysis,ANSYS has been widely used.Concrete solid elements SOLID65 in ANSYS is choosed to simulate the test processes of reinforced concrete waffle slabs with a square layout of ribs.An APDL program is compiled to study reinforced concrete slabs,and nonlinear properties of these waffle slabs are analyzed overall.Comparison of ultimate loads,maximum stresses and load-displacement curves between simulated data and experimental results are further analyzed.Based on a good agreement between calculating precision and computing time,it is concluded that simulated data fit closely to the experimental results so that the rationality of choice of solid elements for analyzing reinforced concrete slabs is confirmed.更多还原