STRUCTURAL PERFORMANCE OF UNBONDED POST-TENSIONED BEAM-COLUMN CONNECTIONS WITH DAMPER

Abstract

This paper presents a beam-end damper which is developed to improve energy dissipation capability of the unbonded post-tensioned concrete structure. To investigate the damper effects, a cantilever beam with dampers was tested under reversed cyclic loading. The experimental results indicate that a high energy dissipation unbonded post-tensioned concrete structure is readily achievable. And a method of modeling the damper for nonlinear analysis is also presented. Comparisons of the experimental results and calculated results lead to confirm adequacy of proposed model.