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根据四根体外预应力简支梁的试验，得出体外预应力简支架在非线性状态下的反应，并利用大变形条件下的杆件结构变形推导了包括几何非线性和材料非线性的单元刚度矩阵，同时编制了非线性有限元程序进行验证。鉴于以往关于体外预应力结构对于预应力筋随外力的变化介绍较少，本文在以往一些学者所作的工作的基础上，提出了预应力筋在转向块处的受力模型，并与本文的试验结果进行比较，结果证明所选用的方法是正确的。
According to the experiment of four external prestressed simply supported beams, the response of the externally prestressed simple support under non-linear condition is obtained and the deformation of the rod under large deformation is deduced to include the geometric nonlinearity and material nonlinearity Stiffness matrix, at the same time prepared a nonlinear finite element program to verify. In view of the previous literature on the external prestressing structure for prestressed tendons with the introduction of less external force, based on the work of some scholars in the past, based on the proposed prestressed tendons in the steering block at the force model, and the test The results of the comparison, the results show that the method used is correct.