Test and Analysis of a Self-centering Concrete Frame Under Seismic Action
A new type of self-centering concrete frame was specially designed which consisted of beam–column joint that has limited rotation capacity to release bending moment in the joint, and column foot joint that has uplift and rotation capacity to prevent the joint from damage. Prestressed tendons are used in beams and columns to provide re-centering functions. Shaking table test on this new frame was carried out to investigate the seismic performance and to check the self-centering capacity, and cyclic-static test were conducted to further determine the ultimate capacity of the structure. Test results shows that the new type of self-centering concrete frame has excellent seismic performance under strong earthquakes with a little residual deformation. None visible damage is observed in shaking table test. The bearing capacity of the model did not drop under 5% inter-storey drift ratio. Design methodology for this new frame was proposed for future applications to engineering practice.
- Solberg, K., Dhakal, R. P., Bradley, B., Mander, J. B., & Li, L. (2008). Seismic performance of damage-protected beam-column joints. ACI Structural Journal, 105(2), 205–214.Google Scholar
- Jiang, C., & Lu, X. (2018). Simulation of contact surfaces in self-centering reinforced concrete frames with test validation. Fib symposium 2017, Maastricht, Netherland.Google Scholar