Abstract

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Title:: Experiment on Mechanical Properties of New Type of Multifunctional Sliding-isolation Bridge Bearing

Author(s):: MAO Jian-xiao; YIN Wan-yun; WANG Hao; LIU Shou-cheng; SHAO Chuan-lin; FU Da-fang; Key Laboratory of C & PC Structure, Ministry of Education, Southeast University

Keywords:: multifunctional sliding-isolation bearing; mechanical property; finite element simulation; shear behavior; experiment study

Abstract:: The traditional bridge slidingisolation bearings performance was single and couldnt meet the situation in different cases, such as normal load, severe seismic load, etc.In order to solve the problem, a new type of multifunctional slidingisolation bearing was designed. Combining the theoretical analysis and finite element simulation, the shear behavior curve of the new type multifunctional slidingisolation bearing was established. The mechanical property and the meaning of each key point of the curve were explained. Based on this, the correlation experiments on the compression behavior, shear behavior of the slidingisolation bearing were carried out. Results show that the new type of multifunctional slidingisolation bearing can achieve the predicted target. The developed bearing can meet the bridge demands of sliding in normal use and energy dissipation under earthquake action. Moreover, the finite element analysis results of shear behavior curve of bearing agree well with the experiment results. Therefore, the theoretical shear behavior curve can effectively reflect the mechanical property of bearing. The obtained results can provide basis for slidingisolation design and dynamic timehistory analysis of the bridges in the future.