Seismic Performance and Collaborative Decoupling of Decoupled Hybrid Frame‐Shear Wall Systems for Resilient Industrial Structures

ABSTRACT In response to the demand for seismic‐resilient industrial structures, this study presents a load‐bearing and lateral‐resistance decoupled (LLRD) hybrid frame–shear wall system, separating vertical load‐bearing (prefabricated frames with adaptive prefabricated beam‐column [APBC] connections) from horizontal resistance (perimeter shear walls). Experimental tests confirm that APBC connections (ductility coefficient μ = 4.2) and bolted anchor base (XZ) connections (60% cyclic stiffness retention) perform well. A five‐story LLRD model (modal/pushover/SPO2IDA analyses) shows longer natural periods (0.342 s), higher ductility ( μ = 14.7), and 28% less drift concentration than cast in situ (CIS) systems. The collaborative decoupling coefficient (CDC) quantifies 25% higher decoupling efficiency via APBC‐XZ synergy; a spectral acceleration ( S a )‐linked repairability model guides post‐earthquake maintenance. Under industrial special loads, the LLRD system avoids resonance and cuts vertical displacement by 30.4% compared with CIS systems. Seismic fragility analysis shows comparable collapse probability (32.46% at S a = 2.0 g) and collapse margin ratio (2.69) to CIS systems, with lower repair costs. The LLRD system balances prefabrication efficiency, seismic resilience, and industrial adaptability, offering a sustainable framework for high‐seismic industrial regions.