Structural Analysis of a Demountable Dry-Connections for an Innovative Precast Wall Structure System

Structural Analysis of a Demountable Dry-Connections for an Innovative Precast Wall Structure System
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Structural Analysis of a Demountable Dry-Connections for an Innovative Precast Wall Structure System

Title: Structural Analysis of a Demountable Dry-Connections for an Innovative Precast Wall Structure System

Conference: CEES 2025

Author(s): R. Martins, R. Carmo, H. Costa, E. Júlio, A. Furtado & R. Sousa

Date: June 12, 2025

Abstract

Within the scope of this study, an innovative precast concrete wall system with structural functionality was developed to enhance the durability and eco-efficiency of structures. To laterally assemble these walls, a new bolted connection system was designed, utilizing steel plates, anchored rebars, and high-strength bolts. The primary challenge lies in achieving compatibility between the stiffness and strength required for structural performance and the necessary tolerances for assembly. To evaluate the structural performance of these bolted connections, monotonic and cyclic loading tests were conducted under both tension and shear forces. This paper describes the developed connections, along with the test specimens, experimental setup, and loading procedures. The results of both monotonic and cyclic tests are presented and discussed. Particular attention is given to the interaction between the connection and the concrete wall, as well as to the strength capacity, deformation, energy dissipation capacity, ductility, and failure modes.