Prefabricated buildings are promoting building industrialization and low-carbon development due to their high quality, high efficiency and sustainability. The standardized design process and efficient design method are the fundamental ways to achieve efficient design of prefabricated buildings. In order to solve the problems of low standardization and limited design methods of prefabricated buildings, this study takes the prefabricated concrete composite wall-slab system (PCCWS) as an example and establishes a standardized design process for prefabricated components. Based on the Building Information Model (BIM) technology, a 3D parts library system was established using MATLAB software. The system stores the prefabricated components into the parts library, and the user can search, retrieve, and incorporate them. Taking a prefabricated dormitory project as an example, this study compares the design method of a 3D parts library based on BIM with the traditional design method. The preliminary findings show that the design method proposed in this study can improve the design efficiency by 42.9%. This study has practical significance for improving the design efficiency of prefabricated buildings and reducing production costs and provides a reference for the design method of prefabricated buildings.

Prefabricated reinforced concrete shear wall structures have attracted significant attention due to their advantages in industrialized construction and sustainability. However, the structural performance of prefabricated shear wall systems still requires further investigation to ensure reliable seismic behavior under earthquake loading. In this study, a fully prefabricated shear wall system incorporating keyway interlocking joints and concentrated reinforcement connections is proposed, and its nonlinear seismic behavior is systematically investigated through finite element modeling, parametric analysis, nonlinear time history analysis, and incremental dynamic analysis. The finite element models were validated against available experimental results and reproduced the hysteretic response, stiffness degradation, and load-carrying capacity with good agreement. The relative errors in peak load were within 5%, indicating the reliability of the adopted modeling approach. Parametric analyses indicate that axial compression ratio, concrete strength, and wall thickness significantly affect structural performance, while prefabricated walls exhibit slightly lower stiffness and strength than cast-in-place walls, with mean reduction factors of 0.88 and 0.91. An eight-story prefabricated shear wall building subjected to multiple scaled ground motions exhibits stable flexure-dominated deformation without joint sliding or soft-story mechanisms. Peak roof displacements reached 19.71 mm and 32.85 mm in the X and Y directions, with maximum interstory drift ratios of 1/892 and 1/724. These values are significantly smaller than the commonly adopted collapse drift limit of 1/120 specified in seismic design guidelines, indicating a relatively large deformation safety margin under the ground motions considered. Probabilistic seismic demand models were established based on both PGA and Sa(T₁, 5%) intensity measures, showing strong correlations with the maximum interstory drift ratio. Fragility analysis demonstrates a high probability of remaining in intact or slight damage states under frequent and design-level earthquakes and a low collapse probability under rare earthquakes. These findings provide valuable insights for the design of next-generation prefabricated shear wall systems with mechanical interlocking joints and concentrated reinforcement connections.