Seismic response of isolated bridges including temperature effect
HU Zi-dong1,2; LI Li1,2; Nie Su-fei1,2
1.School of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan, 430074, China;2.Huibei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan, 430074,China
Abstract：The temperature properties of LRB used for isolated bridges are studied. The seismic response of isolated bridges including temperature effect are purposed. The range of temperature tests from -40℃ to 50℃, the characteristics of LRB under different temperature environmental conditions are measured by quasi-static testing. Base on experimental results, using regression analysis, the function of LRB correlated with temperature is derived. An numerical implementation of isolated bridges under seismic excitation which considered the effect of LRB is presented. The result of the lateral force-deformation of LRB is compared. From the comparative analysis of the result of pier shear、deck drift and deck acceleration, it is indicated that if temperature effect is unconsidered, pier shear and deck acceleration will have higher error and there is less influence of deck drift.
2011, Vol. 30 
