Experimental and Analytical Evaluation of a Retrofit Double-Deck ViaductStructure

摘要

A one-third scale model of a retrofit bent (Bent B-8) from the Alemany Freeway(I280-101 interchange) was built and tested at the structures laboratory at the University California at Berkeley. The experimental studies, which comprised cyclic test on the original retrofit structure, the repaired structure, and the upper column of the test specimen, were required to address the uncertainties inherent in the design and examine the repairability of the retrofit structure following a major earthquake. Analytical studies were also conducted to address two main issues influencing ductility demands on the structure: (1) the effect of bi-directional seismic input, and (2) the effect of soft story response.