Abstract
This paper presents experimental and numerical studies of seismic performance on reinforced concrete (RC) wide beam (WB) joints. Two RC-WB joint specimens and one conventional RC joint specimen were fabricated using the reinforcing details of longitudinal reinforcing bars in a beam as a variable, and quasi-static cyclic loading tests were performed. The results were used to compare and analyze the load-drift ratio relationship, failure mode, and seismic performance of the specimens quantitatively. In addition, a finite element (FE) analysis of the RC-WB joint was conducted, and the rationality of the FE model was validated by comparing it with the test results. Based on the FE model, a parametric study was conducted, where the ratio of longitudinal reinforcing bars placed on the outer and inner parts of the joint (ρex/ ρin) was a key variable. The results showed that, in the RC-WB joint, an increase of ρex/ρin leads to more severe damage to concrete, which reduces the seismic performance of the RC-WB joints.
Original language | English |
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Pages (from-to) | 283-296 |
Number of pages | 14 |
Journal | Earthquake and Structures |
Volume | 25 |
Issue number | 4 |
DOIs | |
State | Published - 2023 |
Keywords
- exterior joint
- quasi-static cyclic loading test
- reinforced concrete
- seismic performance
- wide beam