Structural behaviour of precast prestressed H-shaped ultra-high performance concrete (UHPC) pile with steel spliced joint
Bibliographic record
Abstract
Issues related to pile driving, prestressing of concrete piles, and exposure to environmental conditions in steel and concrete piles negatively affect the service life of bridges. This has prompted interest in finding alternative materials for pile foundations to achieve a minimum 75-year service life with minimal maintenance. Ultra-high performance concrete (UHPC) is a promising candidate due to its exceptional strength and durability properties, offering potential improvements in drivability, and structural and geotechnical performances of the piles. In this study, a precast prestressed UHPC pile with a new geometry was investigated and its bending and shear strengths were evaluated through experimental tests. Additionally, the moment-curvature relationship of this pile under different values of axial compression forces is determined using the fiber technique method. Additionally, this study focused on the splice joints designed for the UHPC pile described above. This study also employed the finite element method (FEM) to evaluate the behavior of piles under direct tensile forces and to assess the performance of piles with different sizes of splices. Findings revealed that the piles in this study provided higher capacity compared to previously tested UHPC piles. Piles exhibited superior performance in terms of crack width control. The maximum shear load and bending moment of all specimens exceeded the values recommended by design guidelines.
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.
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) | 0.001 | 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 | 0.000 | 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 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".