Short-Line Match Casting of Precast Segmental Bridges

Short-line match casting of precast segmental bridges

With the diffusion of 75- and 100-year service-life design requirements, match casting and epoxy gluing of precast segments have acquired a critical role in assuring quality and durability of precast segmental bridges and avoiding premature joint failure.

Short-Line Match Casting of Precast Segmental Bridges introduces span-by-span, balanced cantilever and progressive construction of precast segmental bridges and explains how the erection method influences bridge design and precasting operations. Precast segmental bridges are all about standardization, and the eManual explores bridge design for modularity and the factors that drive the choice between precast segmental technology and other construction methods.

The eManual provides exhaustive coverage of the short-line method, the operations of casting cells for constant- and varying-depth segments, and the geometric design of the deck for standardized production of atypical segments (pier segments, expansion joints, tendon deviators) and geometry correction with the typical segments.

With extensive illustrations, the eManual explains how to generate the casting curve for the segments in relation to casting sequence, erection sequence and time-dependent effects, the geometry control of short-line match casting (inclusive of commercial software programs and how they work) and the progressive correction of geometry errors during short-line casting.

The eManual also explores the long-line method for varying-depth balanced cantilevers and the dual-track U-segments of light-rail transit bridges, the post-casting operations common to all types of segments, different organizations of the stockyard, and segment delivery and epoxy gluing at the erection site.

The eManual is an indispensable gateway to the BridgeTech monographs on span-by-span and balanced cantilever construction of precast segmental bridges and the corresponding families of self-launching gantries and lifting frames. Even bridge owners, designers and constructors with extensive experience of precast segmental technology will find fresh information in the eManual, and extensive feedback from the international bridge industry.

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