Numerical simulation and post-fracture analysis of scaled truss bridge models.
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School of Engineering |
Master's thesis
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Date
2024-12-25
Department
Major/Subject
Building Technology
Mcode
Degree programme
Master's Programme in Building Technology
Language
en
Pages
74
Series
Abstract
This thesis focuses on the numerical analysis of the Pratt-type truss bridge in different damage scenarios, providing insights into load redistribution mechanisms. Pratt-type truss is a system that utilizes inclined diagonal and vertical members to distribute the loads in the intact case. In accidental cases, such main load paths can be damaged. FEM analysis of the deflection, stress and strain patterns was performed to identify the alternative load paths, these being secondary bridge members through global torsional rigidity, deck structures, and rigid joints. Practical strategies to increase the robustness of the truss bridge were also proposed based on the results of the parametric study.Description
Supervisor
Lin, WeiweiThesis advisor
Acharya, PramodKeywords
Pratt-type truss bridge, alternative load paths, redundancy, robustness, parametric analysis, finite element analysis, load distribution, structural behavior