Jul 2026· Advances in Structural Engineering· 0 citations· 39 references
Abstract
The inerter-based response amplification device for dampers has been proposed to enhance seismic resilience, yet its real-world dynamic behavior lacks experimental validation. This study investigates a Cam-Type Response-Amplification Friction Damper (CRAFD) through shaking table test of full-scale steel frame subjected to nine seismic records (including near/far-field events). Key findings reveal that the CRAFD achieves: (1) Target amplification of friction forces (8 kN vs lateral FD’s 1.2 kN) and inertial mass, inducing significant negative stiffness in the primary structure; (2) The natural frequency decreased by a maximum of 34% (from 2.9 Hz to 1.91 Hz) under 0.4 g inputs, and the equivalent damping ratio was significantly improved compared to traditional FD; (3) Higher displacement mitigation and acceleration reduction by maintaining sliding status, which elevates energy dissipation ratio and prevents structural damage; (4) CRAFD suppresses out-of-plane deformation in V-shape linkages. These results validate CRAFD’s efficacy in seismic response control for engineering applications.
To improve the seismic performance and post-earthquake recoverability of low- and mid-rise steel frames, this study investigates the seismic performance and layout strategy of a self-centering friction damper (SCFD) through experimental and numerical studies. The SCFD combines the superelastic restoring capability of s...
Lu Wang, Zhao-Qun Chang, Yahui Zhang et al.· Buildings· 0 citations
Earthquakes produce significant lateral forces on structures, which may lead to excessive displacement, structural
instability, and collapse if proper seismic resistant measures are not adopted. The present study focuses on the comparative
seismic performance evaluation of a G+11 reinforced cement concrete (RCC) buildi...
Utkarsh Mishra, R. Grover· International Journal for Re...· 0 citations
Base-isolation devices are widely used to reduce seismic demand by increasing structural flexibility and dissipating energy. This study numerically investigates the hysteretic response of high-damping rubber bearings (HDRBs) with alternative rubber core arrangements as a lead-free design concept. A reference HDRB-D700...
Bahaa Eddin Ghrewati, T. Jena, B. Chand et al.· Engineering Research Express· 0 citations
Control systems such as base isolators and dampers are widely used to reduce the seismic energy input to structures. Among passive control devices, Tuned Liquid Dampers (TLDs) mitigate structural vibrations through sloshing of the contained liquid, which generates counteracting inertial forces without requiring externa...
Birkan Dağ, Muzaffer Börekçi, M. Gençoğlu· Dicle Üniversitesi Mühendisl...· 0 citations
Existing comparative studies on metallic mild steel dampers (SDs) and fluid viscous dampers (FVDs) are primarily limited by the coupling of device type with layout variations, the lack of a unified performance metric, and the absence of multi-level evidence under fixed structural configurations. This study overcomes th...
Traditional lead rubber bearings (LRB) often fail under strong earthquakes due to excessive horizontal displacement of the isolation layer, which is caused by the lack of a synchronous displacement limiting mechanism. To address this issue, this study proposes a novel Displacement-Restrained seismic isolation Bearing (...
Jinghao Zheng, Mufeng Chen, Cong-Xiao Wu et al.· International Journal of Str...· 0 citations
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