Technological Evolution and Systematic Review of Connection Technologies for Monolithic Precast Concrete Shear Wall Structural Systems

The Monolithic Precast Concrete Shear Wall System (MPCSWS) has become an important structural form for industrialized and sustainable construction, but its broader application is still constrained by the reliability, seismic behavior, and long-term performance of connection regions. Existing studies are abundant but remain insufficiently systematized, especially regarding the relationship among technological evolution, code-based design requirements, and engineering applicability. This review systematically examines MPCSWS connection technologies using literature retrieved from the Web of Science database and analyzed through bibliometric mapping, regulatory comparison, and engineering-oriented synthesis. Wet, dry, and hybrid connections are classified and compared in terms of load-transfer mechanisms, seismic performance, failure modes, durability concerns, and practical limitations. The review shows that wet connections remain the most mature route for achieving emulative cast-in-place behavior, whereas dry and hybrid systems provide advantages in constructability, inspectability, damage control, and potential repairability. However, unified performance evaluation criteria, durability-informed seismic assessment, and full-scale validation remain insufficient. This review provides a structured knowledge framework for MPCSWS connection technologies and discusses potential future developments in resilience-based design, intelligent monitoring, low-carbon materials, and system-level verification.