Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shear performance of seawater sea-sand concrete beams reinforced with shape memory alloy longitudinal and stirrup bars
https://orcid.org/0000-0002-9975-5061
https://orcid.org/0000-0003-3387-4997
Abstract The article explores the use of super elastic shape memory alloy (SMA) longitudinal and stirrup bars in seawater sea-sand concrete beams to improve their shear performance. Cyclic loading tests were conducted to evaluate the shear performance of the beams, and numerical simulations were carried out using Abaqus finite element software. Based on the truss-arch model, a shear bearing capacity calculation equation was deduced. The results demonstrate that replacing ordinary steel bar with SMA bar enhances the shear bearing capacity and ductility of the specimen, retards the stiffness degradation, and improves the self-resetting ability of the beam. As the shear span ratio increases, the shear bearing capacity and ductility of the specimen decrease, and the rate of stiffness degradation accelerates. The established numerical analysis model can effectively simulate the behavior of super elastic SMA bar reinforced seawater sea-sand concrete beams under monotonic cyclic loading, and the results of the shear bearing capacity calculated by the derived equations are consistent with the experimental values.
Highlights The effect of SMA bars on shear performance of sea-sand concrete beams was investigated. Tested four beams for damage, shear capacity, and ductility. Developed a finite element model for sea-sand concrete with SMA bars. Derived a new shear capacity equation for SMA sea-sand concrete beams.
Shear performance of seawater sea-sand concrete beams reinforced with shape memory alloy longitudinal and stirrup bars
https://orcid.org/0000-0002-9975-5061
https://orcid.org/0000-0003-3387-4997
Abstract The article explores the use of super elastic shape memory alloy (SMA) longitudinal and stirrup bars in seawater sea-sand concrete beams to improve their shear performance. Cyclic loading tests were conducted to evaluate the shear performance of the beams, and numerical simulations were carried out using Abaqus finite element software. Based on the truss-arch model, a shear bearing capacity calculation equation was deduced. The results demonstrate that replacing ordinary steel bar with SMA bar enhances the shear bearing capacity and ductility of the specimen, retards the stiffness degradation, and improves the self-resetting ability of the beam. As the shear span ratio increases, the shear bearing capacity and ductility of the specimen decrease, and the rate of stiffness degradation accelerates. The established numerical analysis model can effectively simulate the behavior of super elastic SMA bar reinforced seawater sea-sand concrete beams under monotonic cyclic loading, and the results of the shear bearing capacity calculated by the derived equations are consistent with the experimental values.
Highlights The effect of SMA bars on shear performance of sea-sand concrete beams was investigated. Tested four beams for damage, shear capacity, and ductility. Developed a finite element model for sea-sand concrete with SMA bars. Derived a new shear capacity equation for SMA sea-sand concrete beams.
Shear performance of seawater sea-sand concrete beams reinforced with shape memory alloy longitudinal and stirrup bars
https://orcid.org/0000-0002-9975-5061
https://orcid.org/0000-0003-3387-4997
Abstract The article explores the use of super elastic shape memory alloy (SMA) longitudinal and stirrup bars in seawater sea-sand concrete beams to improve their shear performance. Cyclic loading tests were conducted to evaluate the shear performance of the beams, and numerical simulations were carried out using Abaqus finite element software. Based on the truss-arch model, a shear bearing capacity calculation equation was deduced. The results demonstrate that replacing ordinary steel bar with SMA bar enhances the shear bearing capacity and ductility of the specimen, retards the stiffness degradation, and improves the self-resetting ability of the beam. As the shear span ratio increases, the shear bearing capacity and ductility of the specimen decrease, and the rate of stiffness degradation accelerates. The established numerical analysis model can effectively simulate the behavior of super elastic SMA bar reinforced seawater sea-sand concrete beams under monotonic cyclic loading, and the results of the shear bearing capacity calculated by the derived equations are consistent with the experimental values.
Highlights The effect of SMA bars on shear performance of sea-sand concrete beams was investigated. Tested four beams for damage, shear capacity, and ductility. Developed a finite element model for sea-sand concrete with SMA bars. Derived a new shear capacity equation for SMA sea-sand concrete beams.
Shear performance of seawater sea-sand concrete beams reinforced with shape memory alloy longitudinal and stirrup bars
Li, Zongao (Autor:in) / Dong, Fuming (Autor:in) / Qian, Hui (Autor:in) / Qiu, Peifan (Autor:in) / Shi, Yifei (Autor:in)
01.03.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Stirrup Effectiveness in Reinforced Concrete Beams under Flexure and Shear
| Online Contents | 1997