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Title	Influence of Inelastic Tower Links on Cable-Supported Bridge Response
Accession No	01000115
Authors	McDaniel, Cole C; Seible, Frieder
Journal Title	Journal of Bridge Engineering Vol. 10 No. 3
Corp. Authors / Publisher	American Society of Civil Engineers
Publication Date	20050500
Description	pp 272-280; Figures(11); References; Tables(3)
Media Type	Print
Languages	English
Abstract	A new concept for bridge tower designs in seismic zones incorporates sacrificial link schemes that enable the tower shafts to remain elastic under large seismic excitation. In order to study the influence of inelastic tower links on the seismic response of cable-supported bridges, global seismic time history analyses were performed on models of the new San Francisco-Oakland Bay Bridge East Span self-anchored suspension bridge (SASB) and a cable-stayed bridge (CSB) alternative. The addition of inelastic links to the signature tower improved the behavior of both structures. The tower and overall bridge demands were reduced, including the tower drift and moments as well as the suspension cable, cable stay, and superstructure drifts and axial loads. The inelastic tower links protected the SASB and CSB tower shafts from nonlinear behavior under the 1,500-year Safety Evaluation Earthquake (SEE) event as well as a 2,500-year event. When the inelastic tower links were removed, the SASB tower shafts yielded under the SEE. It was shown that the inelastic tower links could be used to tune the dynamic response of bridge towers in regions of high seismicity.
TRT Terms	Axial loads ; Bridge towers ; Cable stayed bridges ; Earthquake resistant design ; Earthquake resistant structures ; Excitation ; Inelastic stress ; Moments (Mechanics) ; Seismicity ; Suspension bridges
Geographical Terms	San Francisco Bay Area
Identifier Terms	San Francisco-Oakland Bay Bridge
Subject Areas	H25 STRUCTURES DESIGN AND PERFORMANCE; I24 Design of Bridges and Retaining Walls
Availability	Find a library where document is available Order Document: http://worldcat.org/oclc/32947845
TRIS Files	HRIS
Database	TRIS Online

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