"There can be little doubt that in many ways
the story of bridgebuilding is the story of civilization.
By it we can readily measure an important part of a people's progress."
Franklin D. Roosevelt, October 18th, 1931
the story of bridgebuilding is the story of civilization.
By it we can readily measure an important part of a people's progress."
Franklin D. Roosevelt, October 18th, 1931
MetamericBridge is an innovative Pre-Cast Segmental
Bridge Design system used in the construction of many segmental bridges
around the world. The design of the MetamericBridge sofware includes the ability to specify the path and alignment geometry of the bridge's roadway through three dimensional space including curves, banking slopes and hills. The system supports the specification of the bridge design into it's seperate components or "software objects". This allows a model of the bridge to be represented in the software. More importantly this allows all the essential details of the bridge to be calculated, such as bridge alignment and segment shapes (to the milimeter), from it's "virtual bridge model" that the user specifies. Essentially the Segmental Bridge Design system is a "bridge calculator".
Visualization of the calculated bridge is made possible by exporting AutoCAD document exchange files (DXF). Visuailzation is essential for detecting flaws in the bridge design specifications used to calculate the bridge details. In addition essential reports with other verification checks were implemented.
A segmental bridge design breaks a bridge into very
large "segments" or "metameres" that are prefabircated on the ground
in large forms and then transported to the site and hoisted into place
with a gantry crane. Support cables are then strung through interior
tubes within the segments stiching them together into spans. A key aspect of this design are the placement of the support columns, or piers, that hold the bridge up. The segments are strung up into two spans, one on each side of a pier (except for the end cases). The spans are joined in the center by casting them in place with very short segments.
There are two programs in the MetaMericBridge software system: the geometry control program for the specification of a bridge's geometry and segment design; and, the short line casting program for the production of the segments.
| Illustrative Examples |
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Entire Web Site Copyright 2003-2019 by Active Information Corporation
All Rights Reserved