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Structural Engineering and Mechanics   Volume 57, Number 4, February25 2016, pages 681-701
DOI: https://doi.org/10.12989/sem.2016.57.4.681
 
Seismic behavior of T-shaped steel reinforced high strength concrete short-limb shear walls under low cyclic reversed loading
Zongping Chen, Jinjun Xu, Yuliang Chen and Yisheng Su

 
Abstract     [Buy Article]
    This paper presents an experimental study of six steel reinforced high strength concrete T-shaped short-limb shear walls configured with T-shaped steel truss under low cyclic reversed loading. Considering different categories of ratios of wall limb height to thickness, shear/span ratios, axial compression ratios and stirrup reinforcement ratios were selected to investigate the seismic behavior (strength, stiffness, energy dissipation capacity, ductility and deformation characteristics) of all the specimens. Two different failure modes were observed during the tests, including the flexural-shear failure for specimens with large shear/span ratio and the shear-diagonal compressive failure for specimens with small shear/span ratio. On the basis of requirement of Chinese seismic code, the deformation performance for all the specimens could not meet the level of \"three\" fortification goals. Recommendations for improving the structural deformation capacity of T-shaped steel reinforced high strength concrete short-limb shear wall were proposed. Based on the experimental observations, the mechanical analysis models for concrete cracking strength and shear strength were derived using the equivalence principle and superposition theory, respectively. As a result, the proposed method in this paper was verified by the test results, and the experimental results agreed well with the proposed model.
 
Key Words
    steel reinforced concrete (SRC); high strength concrete; short-limb shear wall; T-shaped wall; seismic behavior; deformation; cracking strength; shear strength
 
Address
Zongping Chen; College of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, P.R. China; Key Laboratory of Disaster Prevention and Structural Safety of Chinese Education Ministry, Guangxi University, Nanning, 530004, P.R. China
Jinjun Xu; College of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, P.R. China
Yuliang Chen; College of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, P.R. China
Yisheng Su; College of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, P.R. China
 

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