Theoretical Study on a Cable-Bracing Inerter System for Seismic Mitigation

• DOI: 10.3390/app9194096
• Publication Date: 2019-10-01T15:11:16Z
• Authors: Liyu Xie; Xinlei Ban; Songtao Xue; Kohju Ikago; Jianfei Kang; Hesheng Tang
• Keywords: Bracing

In this paper, cables are proposed to connect the inerter and main frame for translation-to-rotation conversion, i.e., cable-bracing system (CBIS), with a magnified mass enhanced damping effect. This novel configuration has benefits of deformation relaxation at connecting joints, easy installation, an adaptive layout nonconsecutive-story deployment. Dynamic motion equations were established single degree-of-freedom (SDOF) model equipped CBIS. The influence dimensionless parameters, such as inertance-mass ratio, stiffness ratio additional on vibration mitigation studied in terms displacement response force output. A objective multiple optimal design method developed CBIS-equipped structure based performance-oriented framework. Finally, effect was illustrated verified by numerical simulation time-domain. results showed that CBIS is effective structural device used mitigate systems under earthquake excitation. Using optimization method, parameters can be effectively designed satisfy target control level.