为了研究缓粘结预应力混凝土构件的受力性能和使用性能,对3根缓粘结部分预应力混凝土T梁和1根有粘结以及1根无粘结部分预应力混凝土T梁的受力性能进行了对比试验研究。结果表明,缓粘结部分预应力混凝土T梁的受力性能与有粘结部分预应力混凝土T梁极为相似,但明显不同于无粘结部分预应力混凝土T梁。采用有限元软件ABAQUS对缓粘结部分预应力混凝土T梁进行了非线性有限元数值模拟,分析中考虑了几何非线性和材料非线性的影响。选取适当的材料本构关系和单元类型,从梁的变形发展规律、正截面极限承载力和缓粘结预应力筋的应变发展规律等几方面与试验结果进行了对比分析。结果表明,数值模拟结果与试验结果吻合较好。 In order to study the mechanical properties and serviceability of prestressed concrete members with slow-adhesion, three prestressed concrete T-beams and one prestressed concrete T-beam with bonded and one unbonded part Performance comparison test. The results show that the behavior of the partially bonded prestressed concrete T beam is very similar to that of the partially bonded prestressed concrete T beam, but obviously different from the unbonded partially prestressed concrete T beam. The finite element software ABAQUS is used to simulate the slow-bonding partially prestressed concrete T-beam by finite element method. The influence of geometrical nonlinearity and material nonlinearity are considered. By selecting proper constitutive relations and element types, the contrastive analysis is made between the experimental results and the law of deformation and development of the beam, the ultimate bearing capacity of the normal section and the strain development of the prestressing tendon. The results show that the numerical simulation results agree well with the experimental results.