Seismic Performance of Precast Concrete Wide Beam-Column Connections under Ductile Connection Principle
Zhang W. Lee D. Kim S. Zhang D.
March 2025American Concrete Institute
ACI Structural Journal
2025#122Issue 2201 - 214 pp.
To secure emulative seismic performances of precast concrete (PC) special moment frame buildings, two capacity-based connection design options (that is, strong and ductile precast connections) are provided in the current version of ACI 318. However, the evolving performance-based seismic design and response evaluation requires a reasonable estimation of the energy dissipation and corresponding hysteresis damping characteristics so that their potential performance level can be properly predicted. Therefore, this study focuses on the seismic performances, especially the energy dissipation and damping performances of the Codecompliant PC wide beam-column connections. Three PC wide beam-column connection specimens under the ductile connection design principle with different joint details and a reinforced concrete (RC) control specimen were fabricated and tested under reversed cyclic loadings. In addition, an energy-based macro-modeling method was developed to characterize the cyclic responses, including the damping response of PC wide beam-column connections. The test results revealed that the Code-required overstrength of shear-friction strength between PC beam members and castin-place (CIP) concrete is crucial to achieving the ductile performance of precast connections. It also appeared that the energy-based macro-modeling method could capture the hysteresis features through the relationship between the equivalent viscous damping (EVD) ratio and the ductility capacity of PC wide beamcolumn connections. Copyright
beam-column connection , energy dissipation , equivalent viscous damping (EVD) , macro modeling , precast concrete (PC) , wide beam
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The School of Civil Engineering, Changsha University of Science and Technology (CSUST), Hunan, Changsha, China
The Department of Architectural Engineering, CBNU, South Korea
Nazarbayev University, Astana, Kazakhstan
The School of Civil Engineering
The Department of Architectural Engineering
Nazarbayev University
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