Seismic load tests on reinforced concrete beam-column sandwich joints with strengthening measures

Zhi-hong Yang; Ying-min Li; Jian-wei Liu

doi:10.1117/12.852333

14 April 2010 Seismic load tests on reinforced concrete beam-column sandwich joints with strengthening measures

Zhi-hong Yang, Ying-min Li, Jian-wei Liu

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 752264 (2010) https://doi.org/10.1117/12.852333
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

Reinforced concrete high-rise buildings with high strength concrete (HSC) column and normal strength concrete (NSC) floor are popular nowadays. For these structures, it is ineffective to construct beam-column joint with high strength concrete. So beam-column joints with normal strength concrete attract abundant attention and are strongly recommended in china recent years. In this paper, we refer to this type of joints as sandwich joints. In order to improve seismic behavior of sandwich joints with high stress, strengthening measures including addition of vertical dowels, addition of diagonal bars, and enhancement of joint constraint were proposed to apply to engineering practice recent years. In this paper, 6 full scale sandwich joint specimens were test under cyclic load to investigate the validity of strengthening measures. Tested specimens were consist of 1 specimen with additional vertical dowels, 2 specimens with additional diagonal bars, and 1 specimen with additional lateral beams, compared with 2 specimens without strengthening measures. Integrated seismic performances of these specimens were studied, such as load resistance behavior, deflection performance, ductility, energy dissipation behavior, beam bars anchorage capacity and so on. Based on the experimental results, the effect and mechanical behavior of strengthening measures were analyzed.

Citation Download Citation

Zhi-hong Yang, Ying-min Li, and Jian-wei Liu "Seismic load tests on reinforced concrete beam-column sandwich joints with strengthening measures", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752264 (14 April 2010); https://doi.org/10.1117/12.852333

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