Title:
Construction Equipment for Concrete Box Girder Bridges
Author(s):
Boris Levintov
Publication:
Concrete International
Volume:
17
Issue:
2
Appears on pages(s):
43-47
Keywords:
box beams; cantilever bridges; cranes (hoists); construction equipment; formwork (construction); precast concrete; prestressed concrete; Construction
DOI:
Date:
2/1/1995
Abstract:
The popularity of box-girders for medium-length bridge spans has been aided by the development of specialized, reusable construction equipment. Most of this equipment must be imported from Europe, since no full-scale industry to fabricate it exists in the United States. This article describes equipment developed specially for balanced cantilever and span-by-span construction. For the balanced-cantilever method, the application of form travelers for cast-in-place construction is described. For precast construction, the effectiveness of land- or barge-mounted cranes and gantries is discussed along with formwork techniques for precasting segments. Span-by-span construction using support trusses is briefly described. Reference to bridges in the United States, Europe, and the Far East is made to illustrate the various construction techniques.