The Earthquake Engineering Online Archive

Seismic studies of the articulation for the Dumbarton Bridge replacement structure, Vol. 1: Description, theory, and analytical modeling of bridge and components

Baron, Frank; Hamati, Raymond E.

UCB/EERC-75/08, Earthquake Engineering Research Center, University of California, Berkeley, 1975-02, 143 pages (630/B3/1975/v.1)

The influences of various girder types and joint articulations on the seismic responses of long multispan highway bridges are reported in this volume and in Volume 2 ("Seismic studies of the articulation for the Dumbarton Bridge replacement structure, Vol. 2: Numerical studies of steel and concrete girder alternates," by Baron and Hamati, Feb. 1975, UCB/EERC-75/09). The girder types are of cast-in-place and precast concrete construction and steel twin-box sections. Various types of expansion joints and girder to pier cap connections are considered. A 7400 ft long bridge which will cross the lower arm of San Francisco Bay is studied. The bridge is composed of 43 spans founded on various soil conditions, including thick mud and deep water sections. This volume includes a description of two alternate designs for the Dumbarton Bridge structure and the selection of the final design for the structure over the thick mud sections. Also presented are the theory and analytical techniques used to model the bridge and components.

Available online: http://nisee.berkeley.edu/documents/EERC/EERC-75-08.pdf (3 MB)