Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Finite-Element Analysis of Dual-Tube Self-Centering Buckling-Restrained Braces with Composite Tendons
AbstractThe dual-tube self-centering buckling-restrained brace (SC-BRB) with pretensioned basalt fiber-reinforced polymer (BFRP) composite tendons is a novel bracing system that consists of an energy-dissipative BRB and self-centering system that is used to overcome the residual drift. In this study, a finite-element model of the dual-tube SC-BRB is constructed to analyze its hysteretic characteristics. By analyzing and comparing the model of the BRB and the self-centering system, respectively, the accuracy of the model parameters, such as material, contact, and constraint, was verified. The tube length tolerance was introduced to the model of the SC-BRB, which effectively reduced the initial stiffness of the brace and corresponded with the test results. Based on the finite-element model of the SC-BRB, the influence of four parameters, including the material of the pretension tendons, initial pretension force, area of the pretension tendons, and core plates, on the hysteretic performance of the brace is discussed. This paper improved the configuration of the SC-BRB by adding a rubber cushion between the end plate and tubes. The finite-element analysis results indicated that the rubber cushion could not only decrease the initial stiffness of the brace but also reduce the influence of the tube length tolerance on the initial stiffness of the brace.
Finite-Element Analysis of Dual-Tube Self-Centering Buckling-Restrained Braces with Composite Tendons
AbstractThe dual-tube self-centering buckling-restrained brace (SC-BRB) with pretensioned basalt fiber-reinforced polymer (BFRP) composite tendons is a novel bracing system that consists of an energy-dissipative BRB and self-centering system that is used to overcome the residual drift. In this study, a finite-element model of the dual-tube SC-BRB is constructed to analyze its hysteretic characteristics. By analyzing and comparing the model of the BRB and the self-centering system, respectively, the accuracy of the model parameters, such as material, contact, and constraint, was verified. The tube length tolerance was introduced to the model of the SC-BRB, which effectively reduced the initial stiffness of the brace and corresponded with the test results. Based on the finite-element model of the SC-BRB, the influence of four parameters, including the material of the pretension tendons, initial pretension force, area of the pretension tendons, and core plates, on the hysteretic performance of the brace is discussed. This paper improved the configuration of the SC-BRB by adding a rubber cushion between the end plate and tubes. The finite-element analysis results indicated that the rubber cushion could not only decrease the initial stiffness of the brace but also reduce the influence of the tube length tolerance on the initial stiffness of the brace.
Finite-Element Analysis of Dual-Tube Self-Centering Buckling-Restrained Braces with Composite Tendons
Xie, Q (Autor:in) / Zhou, Z / Meng, S. P / Zhu, D. P / Huang, J. H
2016
Aufsatz (Zeitschrift)
Englisch