COUPLING OF RC WALLS USING UNBONDED POST-TENSIONING:APPLICATIONS IN HYBRID CONSTRUCTION

摘要

This paper describes an experimental program to investigate the nonlinear behavior of coupling beamsubassemblages in a new type of hybrid coupled wall system. Coupling of concrete walls is achieved bypost-tensioning steel beams to the walls using unbonded post-tensioning tendons, without embedding thebeams into the walls. Top and seat angles are used at the beam ends to yield and dissipate energy. Theresults demonstrate excellent stiffness, strength, and ductility characteristics of the test specimens undercyclic loading, with considerable energy dissipation concentrated in the angles and self-centering due topost-tensioning. The specimens were able to sustain large nonlinear displacements with little damage inthe beams and the wall regions. The experimental results are used to revise a previous analytical model.