Creep Behavior of Elastomeric Bridge Bearing

EasyChair Preprint 4406

Abstract

Elastomeric bearings are widely used as supports for bridge girders. Under seismic excitations, global and local tensile stresses might be developed within the elastomer of bearings, causing fluctuations of their vertical load. Thus an overall study of the international literature proved an acknowledged gap regarding the response of elastomeric bearings under variable axial loads. This research paper deals with the time- dependent creep behavior on elastomeric bearing. The design of bearings was carried out according to Irc 83- part 2:1987.Prony series of viscoelastic was defined with the help of the shear modulus of the bearings. This numerical method  was implemented into the analytical software in order to find the behavior of bearing under creep and time variation of axial load.ABAQUS -a Finite element analysis(FEA) research software were used in this study to model the bearing and to find the result analytically with numerical input .Finally the analytical result shows that the bearing experience an initial creep over small duration of the time and further on continuous application of load the bearing experience a constant deformation and tends to fail. Thus from this research it is noted that the  bearing behaves as viscoelastic material over a period of time and further increase in time period led to the failure of the structure. Hence from the analytical study we can able to find the various changes in the elastomeric structure, which is then helpful to design a bearing with greater strength.

Keyphrases: ABAQUS, Creep, FEA., Time –dependent, elastomeric bearing

@booklet{EasyChair:4406,
  author    = {Shopana Kumar and Sakthivelan Ramachandran and Shanmuga Priya Selvaraj},
  title     = {Creep Behavior of Elastomeric Bridge Bearing},
  howpublished = {EasyChair Preprint 4406},
  year      = {EasyChair, 2020}}