吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (4): 968-977.doi: 10.13229/j.cnki.jdxbgxb201404011

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Experiment on shear behavior of reinforced concrete beams strengthened with prestressed high strength steel wire mesh

GUO Jun-ping1, DENG Zong-cai1, LU Hai-bo2, LIN Jin-song2   

  1. 1.College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;
    2.Beijing Hand&Hand Building Technology Development Co., Ltd, Beijing 100045, China
  • Received:2013-02-21 Online:2014-07-01 Published:2014-07-01

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Abstract: The shear behavior of concrete beams reinforced with U-shaped high strength steel wire mesh at different prestress levels with new tension and anchor system is investigated. Six beams reinforced with high strength steel wire mesh at different prestress levels and shear span to depth ratio of 2.2 and 1.65 (3 specimens for each ratio) were tested and compared with one reinforced concrete beam without high strength steel wire mesh. The results show that the load capacity and the stiffness of beams reinforced with prestressed steel wire mesh increase with the prestress level of the steel wire mesh. If the prestress level is greater than 0.3, the increase rate of the load capacity is reduced. A model to predict the shear capacity of the beams is proposed. The predicted results using this model are in good agreement with the experiment results. The proposed model can be used for theoretical analysis and design of concrete beams strengthened with prestressed steel wire mesh.

Key words: civil engineering structure, prestress, high strength steel wire, reinforced concrete beam, shear capacity

CLC Number: 

  • TU378.2
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