WIT Press

Seismic Isolation Of The Jamuna Multipurpose Bridge

Price

Free (open access)

Paper DOI

10.2495/ERES990621

Volume

41

Pages

10

Published

1999

Size

1,472 kb

Author(s)

M.G. Castellano, A. Cestarollo

Abstract

The Jamuna Multipurpose (or Bangabandhu) Bridge consists mainly of a viaduct equal to 4.9 km length. The static arrangement is that of a typical multi-span continuous Gerber girder bridge; each box girder has 6 or 7 spans of 99.750 m. FIP Industrial supplied bearings and seismic devices which were to be designed to satisfy the dual aim of: 1) guaranteeing a «classic» static scheme during normal service operation, providing fixed points for horizontal forces (transversal and longitudinal) and guiding devices to allow longitudinal movements of the deck with respect to the piers; 2) to provide multidirectional dampers able (in the event of an earthquake) to transmit to each pier a horizontal load lower than 4250 kN, limiting at the same time the displacement within ± 200 mm. The above targets have been achieved through the design

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