Research on Reconstructing the Progressive Integrated Teaching System of CAD-BIM under the Background of Emerging Engineering

To meet the core training objectives of emerging engineering talents, satisfy the full-cycle education requirements of engineering education professional accreditation, and conform to the core competency standards for digital talents in intelligent construction, this paper takes core drawing courses for civil engineering majors in local universities as the research object. It thoroughly analyzes prominent drawbacks arising from the separated teaching mode of CAD and BIM, including disconnected teaching logic, outdated teaching content, practical training divorced from real engineering scenarios, and imperfect assessment systems. Based on the transformation demands of the digital construction industry, this paper proposes a complete, operable and hierarchically progressive integrated teaching system combining CAD and BIM. Five types of teaching and practical training cases are innovatively integrated into the research, covering standardized drawing of frame-structured buildings, forward modeling converting 2D drawings to 3D models, automatic drawing checking via AI technology, on-site surveying and mapping of campus buildings, and whole-process infiltration of engineering ideological and political education. Systematic reconstruction and optimization are carried out from four dimensions: curriculum module division, classroom teaching procedures, hybrid online-offline practical training modes, and multi-dimensional whole-process assessment mechanisms. Data collected from a semester-long controlled teaching experiment with two parallel classes demonstrates that this progressive integrated teaching framework completely bridges the competency gap between 2D drafting and 3D modeling formed by traditional teaching. It remarkably improves students’ capabilities in standardized construction drawing, digital 3D architectural modeling, independent identification and correction of drawing errors, and handling comprehensive engineering problems. Meanwhile, the system realizes coordinated cultivation of professional skills, engineering thinking and craftsmanship. This research can provide a complete practical framework and empirical data reference for in-depth digital teaching reform of drawing courses for civil engineering disciplines in similar local undergraduate colleges nationwide.