Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterials
Piles driven in Intermediate GeoMaterials (IGM) pose multiple design and construction challenges because of the high uncertainty in IGM properties, lacking knowledge pertaining to pile responses in IGM, and absence of classification, static analysis (SA) methods, and design recommendations. A classi...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
|
| Series: | Soils and Foundations |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0038080623001105 |
| _version_ | 1827400923335360512 |
|---|---|
| author | Nafis Bin Masud Kam W. Ng Shaun S. Wulff |
| author_facet | Nafis Bin Masud Kam W. Ng Shaun S. Wulff |
| author_sort | Nafis Bin Masud |
| collection | DOAJ |
| description | Piles driven in Intermediate GeoMaterials (IGM) pose multiple design and construction challenges because of the high uncertainty in IGM properties, lacking knowledge pertaining to pile responses in IGM, and absence of classification, static analysis (SA) methods, and design recommendations. A classification criterion is established for coarse grained soil based intermediate geomaterials (CG-IGM) using test pile data from bridge projects completed in four U.S. states. This study improves our understanding of pile resistance responses in CG-IGM and results in pile design recommendations. Unit shaft resistance (qs) of CG-IGM increases with the ratio of effective vertical stress (σv′) to the ratio of corrected N-value, (N1)60. Unit end bearing (qb) increases with the ratio of. corrected N-value, (N1)60 to the effective vertical stress (σv′). New SA methods are developed for predicting qs and qb. The proposed SA methods are compared against existing β-method developed for coarse grained soil and validated using an independent pile load test dataset. Pile setup is observed in qs of piles driven in CG-IGMs, and pile relaxation is mostly observed in qb. Statistical assessment concludes that the proposed SA methods provide more accurate and consistent qs and qb predictions than that by the β-method. |
| first_indexed | 2024-03-08T20:11:44Z |
| format | Article |
| id | doaj.art-08d6fd90215541708fc6de3f488e92e2 |
| institution | Directory Open Access Journal |
| issn | 2524-1788 |
| language | English |
| last_indexed | 2024-03-08T20:11:44Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Soils and Foundations |
| spelling | doaj.art-08d6fd90215541708fc6de3f488e92e22023-12-23T05:19:51ZengElsevierSoils and Foundations2524-17882023-12-01636101381Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterialsNafis Bin Masud0Kam W. Ng1Shaun S. Wulff2Department of Civil and Architectural Engineering and Construction Management, University of Wyoming, 1000 E. University Ave, EN3050, Laramie, WY 82071-2000, United StatesDepartment of Civil and Architectural Engineering and Construction Management, University of Wyoming, 1000 E. University Ave, EN3050, Laramie, WY 82071-2000, United States; Corresponding author.Department of Mathematics and Statistics, University of Wyoming, 1000 E. University, Laramie, WY 82071-3036, United StatesPiles driven in Intermediate GeoMaterials (IGM) pose multiple design and construction challenges because of the high uncertainty in IGM properties, lacking knowledge pertaining to pile responses in IGM, and absence of classification, static analysis (SA) methods, and design recommendations. A classification criterion is established for coarse grained soil based intermediate geomaterials (CG-IGM) using test pile data from bridge projects completed in four U.S. states. This study improves our understanding of pile resistance responses in CG-IGM and results in pile design recommendations. Unit shaft resistance (qs) of CG-IGM increases with the ratio of effective vertical stress (σv′) to the ratio of corrected N-value, (N1)60. Unit end bearing (qb) increases with the ratio of. corrected N-value, (N1)60 to the effective vertical stress (σv′). New SA methods are developed for predicting qs and qb. The proposed SA methods are compared against existing β-method developed for coarse grained soil and validated using an independent pile load test dataset. Pile setup is observed in qs of piles driven in CG-IGMs, and pile relaxation is mostly observed in qb. Statistical assessment concludes that the proposed SA methods provide more accurate and consistent qs and qb predictions than that by the β-method.http://www.sciencedirect.com/science/article/pii/S0038080623001105Driven PilesIntermediate GeomaterialCoarse GrainedStatic Analysis MethodLoad and Resistance Factor Design |
| spellingShingle | Nafis Bin Masud Kam W. Ng Shaun S. Wulff Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterials Soils and Foundations Driven Piles Intermediate Geomaterial Coarse Grained Static Analysis Method Load and Resistance Factor Design |
| title | Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterials |
| title_full | Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterials |
| title_fullStr | Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterials |
| title_full_unstemmed | Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterials |
| title_short | Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterials |
| title_sort | resistance responses and design recommendations for driven piles in coarse grained soil based intermediate geomaterials |
| topic | Driven Piles Intermediate Geomaterial Coarse Grained Static Analysis Method Load and Resistance Factor Design |
| url | http://www.sciencedirect.com/science/article/pii/S0038080623001105 |
| work_keys_str_mv | AT nafisbinmasud resistanceresponsesanddesignrecommendationsfordrivenpilesincoarsegrainedsoilbasedintermediategeomaterials AT kamwng resistanceresponsesanddesignrecommendationsfordrivenpilesincoarsegrainedsoilbasedintermediategeomaterials AT shaunswulff resistanceresponsesanddesignrecommendationsfordrivenpilesincoarsegrainedsoilbasedintermediategeomaterials |