钢筋混凝土梁动态试验与数值模拟

Dynamic tests and numerical simulation of reinforced concrete beams

试验研究、数值模拟地震作用范围内加载速率对钢筋混凝土梁影响。试验研究混凝土强度、钢筋强度、剪跨比、加载速率及加载模式等对钢筋混凝土梁力学及变形性能影响;基于ABAQUS有限元软件建立钢筋混凝土梁计算模型,考虑钢筋、混凝土的率敏感性,对梁试件在不同工况下动态性能进行数值模拟;模拟结果与试验结果吻合较好。

The effects of loading rate that might be experienced during earthquakes on reinforced concrete beams were experimentally and numerically studied here. Firstly,the effects of loading rate on mechanical properties and deformation of reinforced concrete beams were experimentally studied with the variation of several parameters including concrete strength,steel strength,shear span ratio,loading rate and loading mode. Then,based on the finite element software ABAQUS,considering the strain rate sensitivity of concrete and steel,the dynamic performances of reinforced concrete beams under different loading conditions were simulated,and the simulation results agreed well with the test ones.