000004707 001__ 4707
000004707 005__ 20141119144546.0
000004707 04107 $$aeng
000004707 046__ $$k2002-06-02
000004707 100__ $$aIqbal, Asif
000004707 24500 $$aSTUDY OF SEISMIC ISOLATION SYSTEM OF JAMUNA MULTIPURPOSE BRIDGE, BANGLADESH

000004707 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004707 260__ $$bColumbia University in the City of New York
000004707 506__ $$arestricted
000004707 520__ $$2eng$$aThis paper examines the use of bearings and energy dissipating devices for seismic isolation of Jamuna Multipurpose Bridge over the Jamuna River in Bangladesh. The 4.8km long bridge is located in a seismically active region and over an alluvial flood plain. The designers used lubricated sliding bearings and steel dampers for protection against possible seismic events. The isolation system and the mechanism of operation are described here along-with the layout and the general arrangement. Other integral components of the system and the installation details are also investigated. Summary of the laboratory tests performed on the bearings and the seismic devices are reviewed to verify the properties of the system. Maintenance procedure and rehabilitation strategies for the system after possible seismic damage are explained. Investigation of the design philosophy and mechanism of the seismic devices show that the although the isolation system can be helpful in reducing seismic damage potential of the structure in case of weak or moderate events, it has some serious shortcomings in terms of strong earthquakes or long-term performance basis. Relevant design code provisions are discussed in this regard.

000004707 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004707 653__ $$aSeismic isolation, bridge design

000004707 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004707 720__ $$aIqbal, Asif
000004707 8560_ $$ffischerc@itam.cas.cz
000004707 8564_ $$s2015632$$uhttps://invenio.itam.cas.cz/record/4707/files/205.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004707 962__ $$r4594
000004707 980__ $$aPAPER