预应力梁张拉的数值模拟方法研究

RESEARCH ON THE NUMERICAL SIMULATION METHOD OF THE TENSION OF PRESTRESSED SUPPORTED BEAM

针对预应力简支梁张拉过程数值模拟的有效性问题,文中在理论计算、试验结论,合理假设的基础上,应用数值方法,通过四种有限元模型的建立以模拟预应力简支梁的张拉过程,通过数值解与试验测试结果的对比,来验证建模方法的可靠性。结果证明,当预应力筋采用实体单元模拟时,仿真结果与试验值比较吻合。研究成果为预应力张拉过程的数值模拟提供了可借鉴的方案。

Aiming at the validity of the numerical simulation process of the tension of prestressed concrete structure,in this paper, on the basis of the numerical methods, through the establishment of four finite element model we simulate the stretching process of prestressed simply supported beam, by comparing the numerical solution and experimental test results we verify the reliability of the modeling method. The results demonstrated that when prestressing tendons using solid element simulation, the sim- ulation results are in good agreement with the experimental value. Research results provides a reference program for the numerical simulation of tension during prestressing.