To improve the mechanical performances of joints in prefabricated construction, a type of connection structure with long-fiber and metal laminated bolts (referred to as a fiber-metal connector) is proposed and investigated by simulation and theoretical methods. The results include the following: (1) The fiber layer in bolts can form a second stiffness during rotation. This mechanical characteristic improves the bearing capacities and energy dissipation ability of the connector relative to the conventional metal connector, which are expected to effectively limit the elastoplastic rotational displacement of a structure. (2) For the reason, the fiber layer can bear load in the plastic phase due to its high-strength characteristic in the length direction. (3) A bilinear model for the bearing curve of the fiber-metal connector is proposed, and equations for optimization of fiber layer thickness are obtained with a target on bearing capacity and energy dissipation ability which are approximately higher 30% and 13% than that of the conventional metal connector, respectively. This research is expected to provide a theoretical basis for the application of this fiber-metal connector in engineering and improve the safety of prefabricated structures.

为了提高预制结构中节点的机械性能，提出了一种长纤维与金属叠层螺栓的连接结构（称为纤维金属连接器），并通过仿真和理论方法进行了研究。结果包括：（1）螺栓中的纤维层在旋转过程中会形成第二刚度。相对于传统的金属连接器，该机械特性提高了连接器的承载能力和能量耗散能力，这有望有效地限制结构的弹塑性旋转位移。（2）因此，由于纤维层在长度方向上的高强度特性，因此可以在塑性相中承担载荷。（3）提出了一种用于金属纤维连接器支承曲线的双线性模型，并以最佳的承载能力和能量耗散能力为目标，分别获得了比传统金属连接器分别高30％和13％的最佳纤维层厚度方程。该研究有望为该光纤连接器在工程中的应用提供理论依据，并提高预制结构的安全性。