Experimental and analytical investigation for modular double truss bridge
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Bibliographic record
Abstract
This study presents a comprehensive investigation of a full-scale double-truss modular bridge spanning 45.7 m, with the primary objective of determining its load-carrying capacity. The research integrates both experimental and numerical analyses to examine the structural response of the bridge. In the experimental phase, the bridge was instrumented to monitor load, deflection, and strain responses throughout the loading process until failure. The numerical investigation involved the development of three different finite element models using beam-column elements, each considering different end conditions. Eigenvalue (buckling) and nonlinear analyses, accounting for material and geometrical nonlinearities, were conducted to explore the characteristic behavior of the bridge. The analyses revealed that modeling the truss girder with pinned-end conditions tends to be conservative, while rigid end conditions more accurately predict the inelastic limit load. Further investigation was conducted to enhance the buckling behavior of the top chord members. Additionally, the contribution of the deck as a load-resisting element and its effect on the truss behavior was explored. Furthermore, the study compares the axial capacities of the top chord members with the calculated AASHTO nominal axial compression capacity, providing valuable insights into the bridge's performance under load. • Full scale test on 45.7 m double truss modular bridge. • Analytical investigation for the double truss modular bridge. • Linear buckling analysis for the modular bridge using FE modeling. • Validating the response and load-carrying capacity of the modular bridge using nonlinear FE modeling. • Comparison between the measured capacities of the top chord members with the capacities based on the AASHTO nominal axial compression resistances.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it