Analytical investigation and monitoring of end-zone reinforcement of the Alaskan Way viaduct super girders

摘要

"Comparison of Details for Controlling End-Region Cracks in Pretensioned Concrete I-Girders" by B. E. Ross, M. D. Willis, H. R. Hamilton, and G. R. Consolazio and "Analytical Investigation and Monitoring of End-Zone Reinforcement of the Alaskan Way Viaduct Super Girders" by A. Arab, S. S. Badie, M. T. Manzari, B. Khaleghi, S. J. Seguirant, and D. Chapman are collectively an important addition to the knowledge of end-zone cracking.The photos of the crack patterns are not greatly different from those shown in Gamble for a girder produced in 1966, though the recent photos show more cracks because the members are larger and much more heavily stressed. At that time, the extent of end-zone cracking did not seem to be widely appreciated or understood, even though this was slightly after publication of the important papers by Gergely et al. that are referenced in the two PCI Journal papers.