000020083 001__ 20083
000020083 005__ 20170118182354.0
000020083 04107 $$aeng
000020083 046__ $$k2017-01-09
000020083 100__ $$aXu, Yan
000020083 24500 $$aShake-Table Tests of a Bridge Model With Different Transverse Unseating-Prevention Devices

000020083 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020083 260__ $$b
000020083 506__ $$arestricted
000020083 520__ $$2eng$$aDamage investigation of highway bridges after the 2008 Wenchuan earthquake showed that typical types of damage included: sliding between the laminated-rubber bearing and the bridge girder, shear keys failure, excessive girder displacements and even span collapse. As part of a major research on the seismic response of highway bridges with economical laminated-rubber bearings in China, a quarter-scale, two-span bridge model was tested on shake tables at Tongji University. The model was subjected to a series of ground motions with different characteristics. The seismic behaviors of different unseating-prevention devices (concrete shear keys and X-steel damper) were investigated and compared in the test. The construction and testing of the bridge model, and the selected experimental results were discussed in the paper. Conclusions drawn from the test are as follows: (1) the sliding of laminated-rubber bearing can perform as a structural fuse that protect piers from severe damage; (2) the properly designed concrete shear keys can effectively restrain the bearing displacements, but will result in relatively large seismic demand of piers; (3) due to the powerful energy dissipation, X-steel dampers perform well in controlling the bearing displacements, and at the same time, mitigating the seismic demand of piers. It is suggested that the X-steel damper can be used along with the laminated-rubber bearings, to improve the seismic performance of highway bridges.

000020083 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020083 653__ $$aWenchuan earthquake; bridge model; laminated-rubber bearing; unseating-prevention devices; shake table tests

000020083 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020083 720__ $$aXu, Yan$$iTang, Hu$$iLi, Jianzhong$$iXiang, Nailiang
000020083 8560_ $$ffischerc@itam.cas.cz
000020083 8564_ $$s741204$$uhttps://invenio.itam.cas.cz/record/20083/files/519.pdf$$yOriginal version of the author's contribution as presented on USB, paper 519.
000020083 962__ $$r16048
000020083 980__ $$aPAPER