Prediction of jacking force in circular press-in caisson in clay
Bibliographic record
Abstract
The press-in caisson method, renowned for its precise construction control, has gained extensive application in both terrestrial and marine engineering projects in recent years. Accurate control of the downward jacking force within an optimal range is essential for ensuring construction safety and efficiency. This study presents an upper-bound solution for the jacking force of circular caisson on the basis of streamline-based velocity fields under axisymmetric conditions. The proposed soil failure mechanism is validated through comprehensive finite element analysis. Extensive parametric studies have been conducted to investigate the influence of key factors on the jacking force factor ( N j ), including the cutting-edge angle, caisson roughness, caisson radius, penetration depth, excavation extent, and soil strength. On the basis of the analytical and numerical results, predictive equations for upper-bound solutions of the circular caisson jacking force are developed, with particular emphasis on their reliability across cutting-edge angles ranging from 25° to 50°. The proposed methodology is further validated through a field case study of an actual caisson engineering project. This research provides valuable insights into the fundamental mechanisms governing caisson jacking force and offers a practical analytical tool for the design and construction of caisson foundations.
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How this classification was reachedexpand
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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".