Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hysteresis and damping properties of steel and polypropylene fiber reinforced recycled aggregate concrete under uniaxial low-cycle loadings
Highlights The influence law of fiber content on hysteretic energy dissipation of FRAC is revealed. A modified constitutive model for FRAC accounting for the fiber content is proposed. A new hysteretic viscous damping model of FRAC represented by residual strain is proposed.
Abstract To investigate the hysteresis and damping properties of fiber-reinforced recycled aggregate concrete (FRAC), a series of cyclic compressive tests of SF-reinforced natural aggregate concrete (SF-R-NAC), SF-reinforced RAC (SF-R-RAC), and PPF-reinforced RAC (PPF-R-RAC) with different fiber contents were carried out. The development law of residual strain was explored, and the relationship between residual strain and unloading strain was suggested. Also, a modified constitutive model of the stress–strain relationship was proposed. Variation of the hysteretic characteristics of FRAC including hysteretic strain energy and residual strain energy under cyclic compressive loadings was analyzed. An equivalent hysteretic viscous damping ratio was suggested and analyzed by using based on Jacobsen’s approach. Furthermore, a new hysteretic viscous damping model represented by residual strain was proposed accounting for the fiber content. Based on the modified constitutive model, the hysteretic viscous damping model is predicted and analyzed to verify the effectiveness and accuracy of the model.
Hysteresis and damping properties of steel and polypropylene fiber reinforced recycled aggregate concrete under uniaxial low-cycle loadings
Highlights The influence law of fiber content on hysteretic energy dissipation of FRAC is revealed. A modified constitutive model for FRAC accounting for the fiber content is proposed. A new hysteretic viscous damping model of FRAC represented by residual strain is proposed.
Abstract To investigate the hysteresis and damping properties of fiber-reinforced recycled aggregate concrete (FRAC), a series of cyclic compressive tests of SF-reinforced natural aggregate concrete (SF-R-NAC), SF-reinforced RAC (SF-R-RAC), and PPF-reinforced RAC (PPF-R-RAC) with different fiber contents were carried out. The development law of residual strain was explored, and the relationship between residual strain and unloading strain was suggested. Also, a modified constitutive model of the stress–strain relationship was proposed. Variation of the hysteretic characteristics of FRAC including hysteretic strain energy and residual strain energy under cyclic compressive loadings was analyzed. An equivalent hysteretic viscous damping ratio was suggested and analyzed by using based on Jacobsen’s approach. Furthermore, a new hysteretic viscous damping model represented by residual strain was proposed accounting for the fiber content. Based on the modified constitutive model, the hysteretic viscous damping model is predicted and analyzed to verify the effectiveness and accuracy of the model.
Hysteresis and damping properties of steel and polypropylene fiber reinforced recycled aggregate concrete under uniaxial low-cycle loadings
Wang, Changqing (Autor:in) / Wu, Huixia (Autor:in) / Li, Chunxiang (Autor:in)
21.12.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch