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Structural Engineering and Mechanics Volume 23, Number 2, May30 2006 , pages 129-145 DOI: https://doi.org/10.12989/sem.2006.23.2.129 |
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Cyclic behavior of interior beam-column connections in non-seismic RC frames at different loading rates |
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Rajesh P. Dhakal ad Tso-Chien Pan
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| Abstract | ||
| This paper provides an insight into the response of non-seismic reinforced concrete (RC) building frames to excitations of different frequencies through experimental investigation. The results of cyclic loading tests of six full-scale RC beam-column sub-assemblies are presented. The tested specimens did not have any transverse reinforcement inside the joint core, and they were subjected to quasi-static and dynamic loading with frequencies as high as 20 Hz. Some important differences between the cyclic responses of non-seismic and ductile RC frames are highlighted. The effect of excitation frequency on the behavior of non-seismic joints is also discussed. In the quasi-static tests, shear deformation of the joint panel accounted for more than 50% of the applied story drift. The test results also showed that higher-frequency excitations are less detrimental than quasi-static cyclic loads, and non-seismic frames can withstand a higher load and a larger deformation when they are applied faster. | ||
| Key Words | ||
| non-seismic; high-frequency; loading rate; shear failure; joint deformation; residual stiffness. | ||
| Address | ||
| Rajesh P. Dhakal; Department of Civil Engineering, University of Canterbury, Post bag 4800, Christchurch 8020, New Zealand Tso-Chien Pan; Protective Technology Research Centre, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 | ||