Author:
Gerhaher Ulrich,Strauss Alfred,Bergmeister Konrad
Abstract
<p>The use of reinforced elastomeric bearings for simple and cheap earthquake isolation systems has been discussed for some years. The advantages of the use of fiber reinforcement for these isolators (e.g. high damping, large range of horizontal deflection) are known and have often been described. However, the current design codes give no appropriate formulas to calculate the behavior of fiber reinforced elastomeric isolators.</p><p>This study presents a first step to develop advanced design guidelines for elastomeric bearings taking nonlinear effects into account. Based on a parametric study on numerical models and the formulas given in the current design codes and other publications a new formula to describe the horizontal stiffness is developed. Hereby specific nonlinearities of fiber reinforced elastomeric bearings are taken into account as well as the influence of vertical loads on the horizontal stability.</p>
Publisher
International Association for Bridge and Structural Engineering (IABSE)
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3 articles.
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