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CHAPTER 4: THE CONSTRUCTION PROCESS OF SEGMENTAL BRIDGES - page 18 / 47

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Chapter 4: The Construction Process of Segmental Bridges

174

segment geometry, especially depth, remain possible with relatively little effort. Disadvantages of cast-in-place cantilevering with form travelers are discussed in Section 3.6.3.1. Figure 4-4 shows a typical view of a form traveler.

Work Platform

Concrete Bucket

Internal

Shoring

Formwork

Open

Figure 4-4: Form Traveler Front View

Main Truss

Work Platform

Bracing

Bottom Slab

Tremie Pipes

Rails

Concrete Surface

Web

Top Slab With Cantilever Flanges

Form travelers consist of a sufficiently stiff steel frame to which form panels for the box girder segments are attached at the front. According to Levintov (1995, p43), the steel frame is mostly composed of two parallel “diamond- or triangular-shaped frames that are connected and stiffened

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