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Proceedings Paper

Seismic load tests on reinforced concrete beam-column sandwich joints with strengthening measures
Author(s): Zhi-hong Yang; Ying-min Li; Jian-wei Liu
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Paper 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.

Paper Details

Date Published: 14 April 2010
PDF: 10 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752264 (14 April 2010); doi: 10.1117/12.852333
Show Author Affiliations
Zhi-hong Yang, Chongqing Univ. (China)
Nan'an Construction Committee (China)
Ying-min Li, Chongqing Univ. (China)
Jian-wei Liu, Chongqing Univ. (China)

Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

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