This paper provides a practical design method for hybrid unbonded post-tensioned precast concrete joints. Such joints featured with self-centering capacities have been widely favored in recent years. However, the absence of design methods hinders their further promotion. To solve the issue, two methods for calculating mechanical behavior of the joints were first studied: characteristic points method and iterative method. The effectiveness of the methods was verified by the existing test results. On this basis, a joint design method considering both yield bearing capacity and energy dissipation capacity was proposed. Moreover, to facilitate design, some factors affecting the bearing capacity were discussed. A five-story frame structure was designed by the proposed design method, and the influence of two design factors on structural response was analyzed by utilizing nonlinear time-history method. The analysis results show that: with the increase of energy dissipation factor α_s, the post-earthquake residual deformation of the structure tends to increase linearly, while the accumulated damage of the structure will decrease continuously; both overdesign and underdesign of bearing capacity of the joint are unfavorable; and near-field earthquake may cause irreparable damage to structural columns, making the residual deformation of structures contrary to the self-centering capacity of joints, which shall be considered during engineering design.

本文为混合无粘结后张法预制混凝土节点提供了一种实用的设计方法。近年来，这种具有自定心功能的关节受到广泛青睐。但是，缺乏设计方法阻碍了它们的进一步推广。为了解决这个问题，首先研究了两种计算关节力学性能的方法：特征点法和迭代法。现有测试结果验证了该方法的有效性。在此基础上，提出了一种兼顾屈服承载力和耗能能力的联合设计方法。此外，为便于设计，还讨论了一些影响承载力的因素。通过提出的设计方法设计了五层框架结构，并运用非线性时程分析方法分析了两个设计因素对结构响应的影响。分析结果表明：随着耗能因子的增加α_小号，该结构的后地震残余变形趋向于线性增加，而该结构的累积损伤会连续地减小; 过度设计和设计不足的关节承载力都是不利的；近场地震可能会对结构柱造成无法挽回的破坏，使结构的残余变形与节理的自定心能力相反，在工程设计时应考虑这一点。