Numerical Modeling of Slab-on-Grade Foundations
Bibliographic record
Abstract
Residential foundations such as slabs-on-ground are often constructed on unsaturated, expansive soils and have to resist deformation associated with external loads and changes in matric suction in the soil. Residential foundations are lightly loaded, and therefore the displacements are mostly due to changes in matric suction. Changes in matric suction can occur as a result of variation in climatic conditions, change in depth of water table, water uptake by vegetation, removal of vegetation or the excessive watering of a lawn. The theoretical context for the analysis of slabs-on-ground placed on expansive soils involves the numerical modeling of moisture flow through the soil and the associated deformations associated with changes in the stress state. The theory associated with moisture movement and volume change has been formulated and widely accepted as part of unsaturated soil mechanics. This paper presents the use of the finite element method to address this complex problem. Various aspects of the separate water flow and deformation aspects will be presented. The combination of stress analysis and seepage analysis is presented. An analysis of the final estimated deformations provides insight into this complex process.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".