Software With A Graphical Interface For
Design Optimization Of Prestressed Concrete
Launched Bridges
Author(s)
A. N. Fontán, S. Hernández & F. J. Tsao
Abstract
A computer code aimed to produce optimum design of prestressed concrete
launched bridges during construction phase is presented in this paper. The
software provides the least cost design for a prestressed concrete bridge
constructed by incrementally launching procedures, searching simultaneously for
the optimum cross-section dimensions and the prestressing forces of the concrete
deck, as well as the most adequate characteristics of the launching nose. The
code incorporates the complete set of constraints considered in the Spanish code
of practice for this type of structure. The software features an advanced graphical
interface to provide a user friendly communication. This graphical environment
allows managing multiple projects simultaneously. The benefit of considering
the numerical optimization instead of design rules, established by well known
bridge designers that can be found in the literature, has been demonstrated by
authors in previous publications. In this paper an application example is
presented to make clear the capabilities of the code.
Keywords: structural optimization, structural design, incrementally launched
bridges, concrete bridges, launching nose.
1 Introduction
The Incrementally Launching Method (ILM) is a common construction
procedure for medium span prestressed concrete bridges that consist of building
a deck by segments on the ground and advancing the already-built deck portion
periodically over the piers until reaching its final position in a similar way to an
extrusion [1–4].
Keywords
structural optimization, structural design, incrementally launched
bridges, concrete bridges, launching nose.
Related Book
Other papers in this volume
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