Authors: V Torra A Isalgue C Auguet G Carreras F C Lovey H Soul P Terriault
Publish Date: 2009/05/14
Volume: 18, Issue: 5-6, Pages: 738-745
Abstract
Two types of application in damping of structures by SMA in Civil Engineering are considered The first one is related to the reduction of the damage produced by earthquakes The second one is concerned with the increase of the lifetime of the stayed cables in bridges The analyses of the experimental conditions required for each application are different Several years or decades without any activity excepted the summerwinter room temperature parasitic effects followed by one or two minutes of oscillations under the earthquake affects or near 100000 oscillations per day with pauses of several hours or days in the damping of stayed cables in bridges This article analyzes the fatigue behavior of the CuAlBe alloy appropriate for earthquakes and of the NiTi alloy Measurements of the damping of stayed cables indicate that the oscillation amplitude could be reduced up to onethird by using a NiTi wire as a damper deviceOur thanks are due to Dr J Pelegrina of CONICETCAB and his group Bariloche Argentina for their measurements and comments about the resistance and calorimetric measurements in NiTi alloy Cooperation between CIRG UPC and ETS Montreal Quebec CA and with CABIB University of Cuyo Argentina is supported by Quebec government and CNEA and earlier by DURSI Gen Catalonia VT gratefully acknowledges the technical support from CABIB The research is carried out within the framework of ESF EUROCORES S3T Project Number 05S3TFP014SMARTeR and the associated “complementary action” of MECSpain Also the Project Number C22/06 from M Fomento is gratefully acknowledged The support provided by Dr D Tirelli and B Zapico of ELSA JRCEU Ispra Italy for the damping measurements in the cable 1 are decisive for the study of NiTi effects
Keywords: