Paper Title:
Cyclic Loading Behavior of Weak Reinforced Concrete Beam-Column Connections
  Abstract

Eight weak reinforced concrete beam-column connections and two strong ones subjected to cyclic loads were tested. Effects of the one-way slab, top reinforcement ratio of the beam as well as the transverse reinforcement ratio inside the joint on the seismic behavior of reinforced concrete beam-column connections were primarily investigated. Tests results show that, when subjected to the negative moment, the beam flexural resistance increases notably due to the presence of the slab. However, failure mode of the weak connection transforms from the beam flexural failure to the joint shear failure, resulting from the increased joint shear brought by the slab participation. Besides, the presence of the slab reduces the ultimate relative rotation, ductility and energy-dissipation capacity of the connection. Generally, weak connections can receive more benefit from the one-way slab than strong connections. Connections with less amount of top reinforcement in the beam exhibit better ductility and energy-dissipation capacity, which indicates that it is not always good to strengthen the beam negative moment zones in existing structures. The transverse reinforcement inside the joint has little effect on the seismic behavior of the weak connection with a one-way slab.

  Info
Periodical
Key Engineering Materials (Volumes 400-402)
Edited by
Jingsi Huo, Yan Xiao, Zongjin Li and Shuaib Ahmad
Pages
881-886
DOI
10.4028/www.scientific.net/KEM.400-402.881
Citation
L. X. Jiang, S. J. Zheng, W. P. Zhang, X. L. Gu, "Cyclic Loading Behavior of Weak Reinforced Concrete Beam-Column Connections", Key Engineering Materials, Vols. 400-402, pp. 881-886, 2009
Online since
October 2008
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Price
$32.00
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