【摘要】 利用有限元分析方法,对高强钢筋混凝土梁在静载作用下的裂缝开展、挠度和平均裂缝间距进行了数值分析;采用ANSYS软件建立了有限元模型,利用逐渐增大荷载的方法对模型施加静载,分析其裂缝性能.与普通钢筋混凝土试件模拟结果对比表明:相同配筋率下,高强钢筋混凝土梁抗裂性能明显优于普通钢筋混凝土梁;相同荷载下两者的变形较小,但随着荷载的加大高强钢筋混凝土梁的挠度增大幅度明显小于普通钢筋混凝土梁的增大幅度;其裂缝平均宽度与规范给出的计算方法所得的结果吻合良好.更多还原

【Abstract】 Using the FEM analysis,this paper analyzes the crack,deformation and the average space between the cracks of high-strength reinforced concrete beams.Based on the experimental research,this paper sets up finite element model and loads on the beams by the method of gradually increasing load to analyze their capability.In comparison with common reinforced concrete,the result indicates that high-strength reinforced concrete beams have a larger capability of resisting crack than do common reinforced concrete beams.If load with the same loads,their deformation is small.However,with the increase of loads,the increasing range of high-strength reinforced concrete beams deformation is smaller than common reinforced concrete beams.FEM analysis and criterion method educe the same average space between the cracks.更多还原