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Paper Information

Journal:   JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)   JANUARY 2008 , Volume 41 , Number 6 (108); Page(s) 739 To 752.
 
Paper: 

DESIGN, MANUFACTURING AND EVALUATION OF PERFORMANCE OF FIBER REINFORCED ELASTOMERIC SEISMIC ISOLATORS

 
 
Author(s):  DEHGHANI ASHKEZARI GH., AGHA KOUCHAK A.A., KOUKABI MORTEZA
 
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Abstract: 

In this paper, the performance of multi-layer electrometric seismic isolators, which have been reinforced by layers of woven carbon fibers, is studied. Specimens of this kind of isolators as well as a specimen of similar size and shape reinforced by steel plates have been designed and manufactured. They have then been tested under cyclic vertical and horizontal loads to determine their mechanical properties and performance. Design of the steel reinforced specimen has been carried out according to current method of design of isolators ; for the fiber reinforced isolators the same method has been applied and the tensile and bending flexibility of the fiber cords have also been considered. The studies show that the fiber reinforced isolators which include steel top and bottom end plates, in addition to having the desired shear characteristics such as ability of sustaining of very large shear strains, can demonstrate vertical stiffness and ratio of vertical to horizontal stiffness equal or even greater than the similar steel reinforced isolators. Therefore they can be used in seismic isolation of structures more economically compared to steel reinforced isolators in view of advantages such as being lighter and simpler to manufacture.

 
Keyword(s): BASE ISOLATION, FIBER REINFORCED, SEISMIC, STILL REINFORCED
 
References: 
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