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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Prestressed Bridge Designed for Crane load at Niagara River Weir
Author(s): A. M. Lount
Publication: Journal Proceedings
Appears on pages(s): 533-543
Keywords: no keywords
Abstract:Cranes which operate gates of a control weir on the Niagara River cause heavily eccentric live loading on the 1512-ft supporting bridge. Bridge designer selected a homogeneous grid system of longitudinal girders tied together by diaphragms, covered with a 7-in. slab act,ing compositely with the longitudinal girders. All components of the grid are prcstresscd. Design considerations of transverse bending st,iffness and torque rigidity are discussed, and stcp-by-step method for exact structural analysis of the grid is summarized. Construc-tion features are treated briefly with emphasis on shear connectors, stirrup spacing, and prestressing system.
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