体外预应力CFRP混凝土薄壁箱梁抗弯性能分析

Flexural performance analysis of external prestressing CFRP concrete thin-wall box girder

利用有限元分析软件ANSYS对试验箱梁抗弯性能试验进行了全过程数值模拟,分析结果与试验结果吻合较好,验证了ANSYS分析此类箱梁的可行性.并针对箱梁抗弯性能的影响因素进行了参数分析,重点分析了各项因素对箱梁的挠度、CFRP应力增量的影响情况,为此类箱梁的工程推广提供了可靠的理论分析依据.

Using finite element analysis software ANSYS simulate the fully flexural experimental process of the concrete box girder, the analysis results agree well with the experimental results, which confirmed the feasibility that ANSYS was used to analyse such box girder. The parametric analysis was presented for the influencing factors of the box girder flexural performance, the influences on deflection of box girderstress, increment of CFRP were mainly analysed, a reliable theoretical analysis basis was provided for the engineering applica - tion of such box girder.