Effect of Seismic Isolation by Rubber-Soil Mixture on Seismic Demand of Steel Moment Frame in Near-Fault Area

Yaghmaei-Sabegh, Saman; Rahmani, Mona

doi:10.22034/jss.2011.238600

Effect of Seismic Isolation by Rubber-Soil Mixture on Seismic Demand of Steel Moment Frame in Near-Fault Area

Document Type : Original Article

Authors

Saman Yaghmaei-Sabegh

Mona Rahmani

10.22034/jss.2011.238600

Abstract

The application of seismic isolation system in developing countries was generally associated with important and special structures, but nowadays it seems necessary the relevance of this technology in residential homes, schools and hospitals where the replacement cost due to earthquake damage can be very significant. It is more imperative in developing countries such as Iran, which are located in areas prone to earthquakes. In this regard, seismic isolation system by rubber-soil mixture has been proposed in 2008 year for developing countries as a new method with distinctive advantages such as low cost. In this paper, the efficiency of this new seismic isolation system has been evaluated in near-fault area with or without forward directivity effect. Based on the results of this paper, performance of RSM depends on near-fault earthquake characteristics in addition to properties of RSM layer and super structure. Consequently, in design process of these systems, significant effect of characteristics of near-fault ground motions on seismic demand reduction should be assessed carefully.

Keywords

Seismic Isolation

Rubber-Soil Mixture

Near Fault Earthquakes

Forward Directivity

Steel Moment Frame

Seismic Demand