000019722 001__ 19722
000019722 005__ 20170118182333.0
000019722 04107 $$aeng
000019722 046__ $$k2017-01-09
000019722 100__ $$aTsai, Chong-Shien
000019722 24500 $$aMechanical Characteristics of Adaptive Rubber Bearings

000019722 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019722 260__ $$b
000019722 506__ $$arestricted
000019722 520__ $$2eng$$aProposed in this study are several innovative seismic isolators consisting of rubber materials that are called adaptive rubber bearings because of their adaptive characteristics. The materials used in the proposed isolators are free of lead which is commonly found in lead rubber bearings. The lead material results in heavy environmental burden and lower yield strength and damping due to rising temperature during earthquakes, causing larger displacements than we would expect. The designed mechanisms in the proposed isolators enable these devices relatively easily manufactured and also provide extremely high damping to the bearings, which is highly desired by engineers in practice. The proposed rubber bearings are completely passive devices yet possess adaptive stiffness and damping. The change in stiffness and damping is predicable and can be calculated at specifiable and controllable displacement amplitudes. The major benefit of the adaptive characteristic of seismic isolators is that a given system can be optimized separately for multiple performance objects at multiple levels of earthquakes. In this paper, mathematical formulations have been derived to explain the mechanisms of the proposed devices. Experimental results are also provided to verify the advanced concept of the proposed devices.

000019722 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019722 653__ $$aseismic isolation; rubber bearing; base isolator; adaptive rubber bearing; high damping rubber bearing

000019722 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019722 720__ $$aTsai, Chong-Shien$$iChiang, T. C.$$iHuang, Wen-Chun$$iSu, Hui-Chen
000019722 8560_ $$ffischerc@itam.cas.cz
000019722 8564_ $$s494822$$uhttps://invenio.itam.cas.cz/record/19722/files/425.pdf$$yOriginal version of the author's contribution as presented on USB, paper 425.
000019722 962__ $$r16048
000019722 980__ $$aPAPER