Research and Application of Lead Viscoelastic Damper

Abstract eng:
A new type of energy dissipation device, lead viscoelastic damper(LVD), was introduced, and the principle, configuration, characteristics of LVD are illustrated.The LVD, which is consisted of lead core and viscoelastic materials, mainly dissipates energy through shear strains of the viscoelastic material and compressive deformation and shear deformation of the lead core, Therefore, it combines the characteristics of both displacement-dependent and velocity-dependent dampers. The experiments were done to study the performance of LVD. Experimental results show that the LVD have good seismic energy dissipation capabilities and performance of fatigue resistance, and shares many of the advantages of existing passive control devices. Based on relevant research results, the energy formula for LVD simulating with Bouc-wen model was presented, and the force model and design process of the LVD and the analysis method of structures with LVDs were studied. The calculating formula of equivalent damping ratio for the structures with LVDs was derived. Finally, some applications of the proposed LVD in seismic retrofit as well as new construction projects were presented in this paper. Analysis results of the projects indicate that the structural seismic behavior could be significantly improved due to the adoption of the structures with LVDs.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket