预应力钢骨超高强混凝土梁抗弯性能非线性分析

摘要

In order to obtain the comprehensive mechanical properties of prestressed steel-reinforced ultra-high-strength concrete beam, the finite element program ANSYS is used to simulate this concrete beam subjected to bending under stat- ic load, and the calculated results are compared with the experimental results. The results show that the cracking load, ultimate load, the yield load of reinforced bar and the load-displacement curve from the analysis model are very close to the experimental results, which could verify the correctness of the finite element model. The model could provide a more accurate numerical simulation for the non-linear analysis of the prestressed steel-reinforced concrete structure.%为全面了解预应力钢骨超高强混凝土梁的受力性能,采用ANSYS对预应力钢骨超高强混凝土梁在静力荷载作用下的抗弯受力过程进行数值模拟分析,并与试验结果进行比较。结果表明,该模型所得的开裂荷载、极限荷载、钢筋屈服荷载以及荷载位移曲线与试验结果接近,验证了有限元模型的正确性。模型为预应力钢骨混凝土结构的非线性分析提供了一种较为准确的数值模拟方法。