ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Seismic Performance of Full-Scale Moment Connections of One-Story Precast Industrial Facilities

Author(s): Juan F. Correal, Sebastian A. Bernal, and Wael M. Hassan

Publication: Structural Journal

Volume: 118

Issue: 6

Appears on pages(s): 179-192

Keywords: experimental seismic behavior; full-scale cyclic test; industrial facilities; precast beam-column connections; precast concrete columns

Date: 11/1/2021

Abstract:
One-story concrete moment frame buildings present critical joints because free horizontal faces reduce their confinement in the core, affecting the anchorage of the top beam reinforcement and producing joint distress. In addition, precast concrete processes that involve prestressed beams with different shapes, precast concrete columns, construction of joints on the jobsite, and special construction details such as a reinforced topping on top of the beam joints could affect the seismic performance of one-story precast moment frames for industrial buildings. Due to the lack of experimental testing, six full-scale critical connections were cyclically tested to allow understanding of their seismic performance. Test specimens include one precast reinforced column, three knee joints, and two interior joint sub-assemblages that were designed based on ACI 318. All connections sustained at least a 3.5% drift ratio with no beam longitudinal reinforcement bar rupture or buckling and very low or no observed damage of the column and minimal joint distress, which is consistent with the strong-column/weak-beam design philosophy. The performance acceptance criteria of ACI 374.1 was satisfied by all test specimens in terms of stiffness, strength, and energy dissipation. Nonetheless, the presence of the reinforced topping slab on the top of the joint plays a role in achieving slightly better strength, ductility, and hysteretic performance response.


ALSO AVAILABLE IN:

Electronic Structural Journal



  

Please enter this 5 digit unlock code on the web page.