Numerical Study of Dynamic Behavior of Soil-Scrap Tires Mixture

Huge amount of scarp tires have made a big environmental problem that its reduction assessment is an important aim for researchers. Reusing of these materials in different branch of industrial is concentrated. Because of elastic behavior and absorbing the energy, waste tires are concerned as a famous damper. As a more effective manner to check the seismic forces is reducing the entered movements to the structure, it seems that using soil-scrap tire mixtures acts as seismic damper and these mixtures can reduce the earthquake forces acting to the structure. In this research this mixture is modeled as a damper under the foundation and the bed rock depth is analyzed in both time and frequency domains. Obtained results show that using soil-tire mixture reduces the resonance amplitude, energy and the acceleration reached to the ground surface. It should be mentioned that increasing the depth of the bed rock, the act of the mixture as a damper reduces. The results show that this mixture has a better operation in strong ground motions. Using these materials is cheaper compared with other base isolation systems, more available, not requiring high technology and also it reduces both earthquake forces and environmental problems.