A Comparative Study on the End-Bearing Capacity of Toe-Wing & Spiral Screw Piles in Cohesionless Soil
The use of screw piles has grown rapidly, yet their varied configurations and behavior in different soils remain key research areas. This study examines the performance of Toe-wing (Tsubasa) and Spiral screw piles with similar tip areas under similar ground conditions, focusing on how the helix posi...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
|
| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/15/4/525 |
| _version_ | 1826582917521866752 |
|---|---|
| author | Ahmad Waheed Sahil Taro Uchimura Adnan Anwar Malik Md Raihanul Kabir |
| author_facet | Ahmad Waheed Sahil Taro Uchimura Adnan Anwar Malik Md Raihanul Kabir |
| author_sort | Ahmad Waheed Sahil |
| collection | DOAJ |
| description | The use of screw piles has grown rapidly, yet their varied configurations and behavior in different soils remain key research areas. This study examines the performance of Toe-wing (Tsubasa) and Spiral screw piles with similar tip areas under similar ground conditions, focusing on how the helix position (W<sub>p</sub>) and tip embedment depth (E<sub>d</sub>) affect the ultimate pile capacity. In the case of a fixed helix/toe-wing position with increasing pile tip depth, Spiral screw piles exhibited higher load-carrying resistance than toe-wing piles at relative densities of 55%, 80%, and 90% fine sand. Moreover, load-carrying resistance increased as the position of the helix/toe-wing increased (W<sub>p</sub> > 0). For a fixed pile tip depth (E<sub>d</sub>) and varying helix/toe-wing positions, spiral screw piles showed higher resistance than toe-wing piles when W<sub>p</sub> < 90 mm. Moreover, the resistance decreased as the helix moved away (W<sub>p</sub>/D<sub>h</sub> > 0), and the pile tip acted independently when W<sub>p</sub>/D<sub>h</sub> > 1.38. Whereas, for toe-wing piles, ultimate pile capacity increased as the toe-wing moved away from the tip up to W<sub>p</sub>/D<sub>h</sub> = 2.15, then decreased to reflect the independent behavior of the toe-wing and pile tip. Empirical equations are presented to convert installation effort and ultimate capacity from one type to another. |
| first_indexed | 2025-03-14T15:13:35Z |
| format | Article |
| id | doaj.art-537e58796c454220868c78c261defd8f |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2025-03-14T15:13:35Z |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-537e58796c454220868c78c261defd8f2025-02-25T13:17:06ZengMDPI AGBuildings2075-53092025-02-0115452510.3390/buildings15040525A Comparative Study on the End-Bearing Capacity of Toe-Wing & Spiral Screw Piles in Cohesionless SoilAhmad Waheed Sahil0Taro Uchimura1Adnan Anwar Malik2Md Raihanul Kabir3Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, JapanGraduate School of Science and Engineering, Saitama University, Saitama 338-8570, JapanSchool of Engineering, University of Newcastle, Callaghan, NSW 2308, AustraliaGraduate School of Science and Engineering, Saitama University, Saitama 338-8570, JapanThe use of screw piles has grown rapidly, yet their varied configurations and behavior in different soils remain key research areas. This study examines the performance of Toe-wing (Tsubasa) and Spiral screw piles with similar tip areas under similar ground conditions, focusing on how the helix position (W<sub>p</sub>) and tip embedment depth (E<sub>d</sub>) affect the ultimate pile capacity. In the case of a fixed helix/toe-wing position with increasing pile tip depth, Spiral screw piles exhibited higher load-carrying resistance than toe-wing piles at relative densities of 55%, 80%, and 90% fine sand. Moreover, load-carrying resistance increased as the position of the helix/toe-wing increased (W<sub>p</sub> > 0). For a fixed pile tip depth (E<sub>d</sub>) and varying helix/toe-wing positions, spiral screw piles showed higher resistance than toe-wing piles when W<sub>p</sub> < 90 mm. Moreover, the resistance decreased as the helix moved away (W<sub>p</sub>/D<sub>h</sub> > 0), and the pile tip acted independently when W<sub>p</sub>/D<sub>h</sub> > 1.38. Whereas, for toe-wing piles, ultimate pile capacity increased as the toe-wing moved away from the tip up to W<sub>p</sub>/D<sub>h</sub> = 2.15, then decreased to reflect the independent behavior of the toe-wing and pile tip. Empirical equations are presented to convert installation effort and ultimate capacity from one type to another.https://www.mdpi.com/2075-5309/15/4/525toe-wing screw pilespiral screw pileultimate pile capacityinstallation efforthelix position effectspile load tests |
| spellingShingle | Ahmad Waheed Sahil Taro Uchimura Adnan Anwar Malik Md Raihanul Kabir A Comparative Study on the End-Bearing Capacity of Toe-Wing & Spiral Screw Piles in Cohesionless Soil Buildings toe-wing screw pile spiral screw pile ultimate pile capacity installation effort helix position effects pile load tests |
| title | A Comparative Study on the End-Bearing Capacity of Toe-Wing & Spiral Screw Piles in Cohesionless Soil |
| title_full | A Comparative Study on the End-Bearing Capacity of Toe-Wing & Spiral Screw Piles in Cohesionless Soil |
| title_fullStr | A Comparative Study on the End-Bearing Capacity of Toe-Wing & Spiral Screw Piles in Cohesionless Soil |
| title_full_unstemmed | A Comparative Study on the End-Bearing Capacity of Toe-Wing & Spiral Screw Piles in Cohesionless Soil |
| title_short | A Comparative Study on the End-Bearing Capacity of Toe-Wing & Spiral Screw Piles in Cohesionless Soil |
| title_sort | comparative study on the end bearing capacity of toe wing spiral screw piles in cohesionless soil |
| topic | toe-wing screw pile spiral screw pile ultimate pile capacity installation effort helix position effects pile load tests |
| url | https://www.mdpi.com/2075-5309/15/4/525 |
| work_keys_str_mv | AT ahmadwaheedsahil acomparativestudyontheendbearingcapacityoftoewingspiralscrewpilesincohesionlesssoil AT tarouchimura acomparativestudyontheendbearingcapacityoftoewingspiralscrewpilesincohesionlesssoil AT adnananwarmalik acomparativestudyontheendbearingcapacityoftoewingspiralscrewpilesincohesionlesssoil AT mdraihanulkabir acomparativestudyontheendbearingcapacityoftoewingspiralscrewpilesincohesionlesssoil AT ahmadwaheedsahil comparativestudyontheendbearingcapacityoftoewingspiralscrewpilesincohesionlesssoil AT tarouchimura comparativestudyontheendbearingcapacityoftoewingspiralscrewpilesincohesionlesssoil AT adnananwarmalik comparativestudyontheendbearingcapacityoftoewingspiralscrewpilesincohesionlesssoil AT mdraihanulkabir comparativestudyontheendbearingcapacityoftoewingspiralscrewpilesincohesionlesssoil |