Evaluating the Response of Cable-Stayed Bridges Subjected toDelayed Seismic Time-Histories Using Multi-Support Excitation
Bibliographic record
Abstract
Seismic Spatially varying loads for cable-stayed bridges are either neglected or poorly addressed in the most of the current bridge design codes around the world.According to Canadian Highway Bridge Design Code (CHBDC) it is the responsibility of the designer to check the effect of the spatially varying loads while no details are provided.Given this, the objective of this study is to evaluate the effects of multi-support excitation on the response of a cable-stayed bridge.For the purpose of the study, a well-known Quincy Bayview bridge located in Illinois, USA is under examination.The results from the study show that the seismic excitation in the longitudinal direction has caused resonance in the bridge vertical direction, which is due to the delay of the finite shear-wave velocity of the propagation soil at the pier supports.Furthermore, it is observed that the resonance takes place not only in soft soil but also in stiff soil depending on the frequency content of the ground motion, and the modal properties of the bridge.A formula for dominant shearwave velocity for resonance is proposed along with a method to develop the velocity vs response curve.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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 | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".