Full-Span Precasting of High-Speed Railway Bridges

In 17 pages, Full-Span Precasting of High-Speed Railway Bridges explores the organization of large-scale precasting facilities designed for just-in-time delivery of precast spans. It explains how to optimize the productivity of casting cells and rebar jigs for full-span cage prefabrication and the pros and cons of span post-tensioning vs. pre-tensioning and hybrid prestressing systems.

It also explains the use of portal carriers with underbridge and span launchers fed by tire trolleys for delivery and placement of precast spans, compares loading, kinematics, performance, productivity, structure-equipment interactions and the span curing-time of the two solutions, and explains how to choose the span delivery technology in relation to multiple features of the project.

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