Effect of Stirrups Spacing on Shear Failure and Size Effect of RC Bseams

Stirrup spacing has an important influence on the crack development and shear ductility of reinforced concrete（RC）beams,but its influence on shear strength and size effect is seldom studied.A mechanical analysis model for shear failure of RC beams was established by using 3 D meso-scale numerical si...

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Bibliographic Details
Published inFangzai Jianzai Gongcheng Xuebao no. 6; p. 1157
Main Authors Jin, Liu, Wang, Tao, Du, Xiuli, Jiang, Xuanang, Xia, Hai
Format Journal Article
LanguageChinese
Published Nanjing Zhongguo Zaihai Fangyu Xiehui 01.01.2021
Subjects
Ductility
Failure analysis
Failure modes
Mathematical models
Mechanical analysis
Reinforced concrete
Shear strength
Simulation
Size effects
Stirrups
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Summary:Stirrup spacing has an important influence on the crack development and shear ductility of reinforced concrete（RC）beams,but its influence on shear strength and size effect is seldom studied.A mechanical analysis model for shear failure of RC beams was established by using 3 D meso-scale numerical simulation method. The mechanism and regularity of the influence of stirrup spacing and stirrup ratio on shear failure and size effect of RC beams were studied. The influence of stirrup spacing on shear ductility and size effect of RC beams was emphatically analyzed. The results showed that the stirrup spacing has little effect on the shear failure mode and shear strength,mainly on the shear ductility of RC beams;reducing the stirrup spacing can effectively restrain the brittle behavior of beams;stirrups increase the shear capacity of beams while weakening the size effect of shear strength. In addition,the simulation results were compared with the theoretical formula of shear strength size effect,which verified the a
ISSN:1672-2132
DOI:10.13409/j.cnki.jdpme.201910012