000018956 001__ 18956
000018956 005__ 20170118182249.0
000018956 04107 $$aeng
000018956 046__ $$k2017-01-09
000018956 100__ $$aRistic, Danilo
000018956 24500 $$aAdvanced Seismic Upgrading of Existing Bridges With New Adaptive Imso-System for Seismic Response Modification

000018956 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018956 260__ $$b
000018956 506__ $$arestricted
000018956 520__ $$2eng$$aThe high seismic risk of transportation networks in South East Europe (SEE) is a serious threat to public safety, sustainable economic and social development and security in the region. This risk has not been quantified to this date and sound seismic risk mitigation concepts are not available. Most of the existing bridges are constructed as non-aseismic and are older than 40 years, so that they are highly vulnerable to seismic loads and require immediate, reliable and cost-effective seismic upgrading. Therefore, leaded by the third author, specific large-scale international NATO Science for Peace Project “Seismic Upgrading of Bridges in South-East Europe by Innovative Technologies (SFP: 983828)”, was directed to realization of fundamental research and development of an innovative technology for seismic isolation and seismic protection of bridges. Extensive experimental tests have been conducted at the Institute of Earthquake Engineering and Engineering Seismology (IZIIS) in Skopje, Macedonia. The extensive research activity of this innovative NATO SfP project has been focused on development, creation and experimental validation of new, highly efficient, seismic response modification system for bridges. The proposed adaptive IMSO-system was developed based on optimized integration of the innovative concepts of Multi-Level Multi-Directional Seismic Energy Dissipation and Globally Optimized Seismic Energy Balance (GOSEB-System). The newly created adaptive IMSO-system for seismic protection of bridges represents important technical innovation capable of integrating the advantages of seismic isolation, seismic energy dissipation and effective displacement control. With the achieved advanced seismic isolation and seismic protection performances, in compliance with the actual seismic input energy, complete seismic protection of bridge structures is provided, even under the strongest earthquakes. In this paper presented are the original results obtained from recently conducted extensive experimental and analytical research devoted to development and validation of the created new method for advanced seismic upgrading of new and existing bridges including application of advanced adaptive IMSO-system for structural seismic response modification. The existing prototype bridge considered herein for innovative upgrading represents typical classical system commonly used in south-east Europe during middle years of the 20th century, mostly designed without consideration of seismic loads. It was confirmed that, with installation of optimally designed new adaptive IMSO-system, the selected specific non-seismic existing structure can be efficiently upgraded and converted to seismically resistant structure for expected seismic effects in its location. The specific nonlinear behavior features of all integrated components in the original IMSO-system have been successfully considered in the formulated advanced phenomenological analytical model.

000018956 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018956 653__ $$aBridges, nonlinear response, seismic isolation, response modification, passive control

000018956 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018956 720__ $$aRistic, Danilo$$iHristovski, Viktor$$iRistic, Jelena
000018956 8560_ $$ffischerc@itam.cas.cz
000018956 8564_ $$s1552571$$uhttps://invenio.itam.cas.cz/record/18956/files/2566.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2566.
000018956 962__ $$r16048
000018956 980__ $$aPAPER