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在大比例悬臂混凝土梯形截面箱梁模型弹性范围内的剪力滞效应试验研究基础上,结合混凝土箱梁的特点,通过选用合适的单元类型和材料本构关系,运用ANSYS大型有限元分析程序模拟了试验全过程;从试验和理论分析的基础上,重点分析了悬臂混凝土薄壁箱梁悬臂部分在不同荷载作用下,荷载-挠度曲线以及不同截面处翼缘混凝土应变分布规律等问题,分析结果与试验结果吻合较好.图7,表1,参14.
Based on the experimental study of shear lag effect in the elastic range of large-scale cantilever trapezoidal box girder, combining with the characteristics of concrete box girder, through the selection of suitable unit type and material constitutive relationship, the large finite element analysis program of ANSYS Based on the experimental and theoretical analysis, the problems of the load-deflection curve and the strain distribution law of the flange concrete at different cross-sections of cantilever thin-walled concrete cantilever beam under different loads are analyzed emphatically. The analysis results Good agreement with the test results. Figure 7, Table 1, reference 14.