01002449

Component

https://doi.org/10.3141/trr.11s.8853g8gmr4475477

https://scholar.google.co...Tang&publication_year=2005

The seismically vulnerable east span of California's San Francisco-Oakland Bay Bridge will be replaced with a dual eastbound and westbound parallel structure 3.6 km long. The Bay Bridge lies between the Hayward and the San Andreas Faults, which can generate magnitude 7.5 and 8.1 M earthquakes, respectively. Performance criteria require that the bridge be operational immediately after a 1,500-year-return-period earthquake from either of these two faults. Four distinct structures will make up the bridge crossing: a low-rise posttensioned concrete box girder near the Oakland shore, a segmental concrete box girder 2.4 km long, a self-anchored suspension signature span, and a posttensioned concrete box girder that connects to the east portal of the Yerba Buena Island tunnel. The single-tower asymmetric self-anchored suspension bridge was selected from a total of four design alternatives that were developed for the signature main span; these included two cable-stayed bridges and two self-anchored suspension bridges (each bridge type included single-tower and dual portal tower alternatives). Each design alternative was evaluated on the basis of its seismic response, construction cost, and aesthetic properties.

01002432

English

pp 319-327

2005

Transportation Research Record: Journal of the Transportation Research Board

6th International Bridge Engineering Conference: Reliability, Security, and Sustainability in Bridge Engineering

0309093813

Digital/other

Figures (14) ; Photos (1) ; References (6)

Aesthetics; Alternatives analysis; Box girders; Bridge design; Costs; Earthquake resistant design; Faults; Posttensioning; Suspension bridges

San Francisco-Oakland Bay Bridge

Self anchored bridges

Bridges and other structures; Design; Finance; Highways; I24: Design of Bridges and Retaining Walls

TRIS, TRB

Jul 25 2005 11:14AM