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Purpose:Â
Purpose:Â
For this project, you will act as a structural engineer for Thayer Associates, tasked with designing the new Lee Road Bridge over Union Creek to replace an obsolete concrete structure.
Requirements:
Requirements:
Span and Capacity: The bridge must span 24 meters across existing abutments and safely carry two lanes of traffic.
Structure and Safety: It must be a steel truss bridge and pass the rigorous structural safety requirements of the AASHTO bridge design code (the H20-44 truck load test).
The Ultimate Goal: Because the town has a limited project budget, your primary objective is to design a bridge that costs as little as possible while still remaining completely safe.
How I Optomized:
How I Optomized:
Optimizing Member Properties: Selecting the most efficient materials, cross-sections, and sizes, such as using hollow tubes for compression members and balancing the economic tradeoff between lightweight materials and standardization.
Optimizing the Shape: Modifying the geometry by moving joints (changing a Pratt truss to a rounded Parker truss) to distribute forces more efficiently and shorten compression members.
Optimizing the Configuration: Testing new structural (like a Warren Deck Truss) to find the best starting point.
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