Estudio analítico de los efectos de la torsión natural en el comportamiento de edificios de varios pisos torsionalmente desbalanceados ante solicitaciones sísmicas
Bibliographic record
Abstract
Las recomendaciones de diseño para edificios de varios pisos torsionalmente desbalanceados, que presentan diferentes códigos de diseño de edificaciones, de países como Canadá, Estados Unidos, México, Australia, entre otros, y las que proponen diferentes investigadores, son analizadas en este trabajo junto con las recomendaciones que presentan las Normas Colombianas de Diseño y Construcción Sismo Resistente NSR-98.Este estudio se hace mediante un análisis inelástico comparativo de las demandas de ductilidad normalizadas en los planos resistentes de un edificio cuyos centros de rigidez de piso no coinciden con los centros de cortante, con respecto a las demandas de ductilidad que presentan estos mismos planos en una estructura torsionalmente balanceada. El trabajo incluye tres modelos de edificios de cinco pisos, sometidos al registro acelerográfico de El Centro en las dos direcciones principales; siete procedimientos de diseño que reflejan las recomendaciones de los diferentes códigos de construcción y las desarrolladas en recientes investigaciones, y considera dos coeficientes de reducción de resistencia que involucran una evaluación en diferentes niveles de la respuesta inelástica./The design recommendations for torsionally unbalanced multistory buildings present different design codes for edifications in countries like Canada, USA, Mexico and Australia, among others; these and the proposals by different researchers are analyzed in this document along with the recommendations presented by the Colombian Regulations for Design and Seismic Resistant Constructions NSR-98.This study made through a comparative inelastic analysis of the ductility demands normalized in the resistant planes of a building whose floor rigidity centers do not coincide with the shear centers, with respect to the ductility demands presented by those planes in a torsionally balanced structure. The study considers three models of five-story buildings, subjected to both horizontal components of the El Centro (1940) ground motion as well as seven procedures that reflect the recommendations of the different construction codes and those developed in recent researches; two resistance reduction coefficients that involve an evaluation in different levels of inelastic response are considered.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
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".