Seismic Retrofit of Concrete Shear Walls with SMA Tension Braces
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
A bracing system consisting of tension-only superelastic nickel-titanium shape-memory alloy (SMA) was developed and implemented as a retrofitting methodology for seismically deficient squat reinforced concrete shear walls. The bracing system incorporates SMA links that serve as resettable fuses with unique recentering and energy-dissipation properties that result in improved hysteretic response. This paper focuses on one-third-scale walls that represent pre-1970s reinforced concrete shear walls susceptible to shear sliding and diagonal tension cracking. Four walls, two control and two retrofitted with the SMA bracing system, were tested under reversed cyclic loading. The SMA braces demonstrated excellent performance as a retrofitting device, improving the seismic response of squat reinforced concrete shear walls, including lateral strength capacity, ductility, energy dissipation, and displacement recovery. The retrofitting system was central in minimizing damage at the base of the walls.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| 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