Seismic performance of reinforced engineered cementitious composite shear walls

  • Li, Mo (Department of Civil & Environmental Engineering, University of Houston) ;
  • Luu, Hieu C. (Department of Civil & Environmental Engineering, University of Houston) ;
  • Wu, Chang (Department of Civil & Environmental Engineering, University of Houston) ;
  • Mo, Y.L. (Department of Civil & Environmental Engineering, University of Houston) ;
  • Hsu, Thomas T.C. (Department of Civil & Environmental Engineering, University of Houston)
  • Received : 2013.10.11
  • Accepted : 2014.10.08
  • Published : 2014.11.25


Reinforced concrete (RC) shear walls are commonly used for building structures to resist seismic loading. While the RC shear walls can have a high load-carrying capacity, they tend to fail in a brittle mode under shear, accompanied by forming large diagonal cracks and bond splitting between concrete and steel reinforcement. Improving seismic performance of shear walls has remained a challenge for researchers all over the world. Engineered Cementitious Composite (ECC), featuring incredible ductility under tension, can be a promising material to replace concrete in shear walls with improved performance. Currently, the application of ECC to large structures is limited due to the lack of the proper constitutive models especially under shear. In this paper, a new Cyclic Softening Membrane Model for reinforced ECC is proposed. The model was built upon the Cyclic Softening Membrane Model for reinforced concrete by (Hsu and Mo 2010). The model was then implemented in the OpenSees program to perform analysis on several cases of shear walls under seismic loading. The seismic response of reinforced ECC compared with RC shear walls under monotonic and cyclic loading, their difference in pinching effect and energy dissipation capacity were studied. The modeling results revealed that reinforced ECC shear walls can have superior seismic performance to traditional RC shear walls.


constitutive model;engineered cementitious composite;shear walls;nonlinear finite element;pinching effect


Supported by : U.S. Department of Energy


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