پیوندهای مفید
آمار
| تعداد نشریات | 21 |
| تعداد شمارهها | 687 |
| تعداد مقالات | 9,985 |
| تعداد مشاهده مقاله | 70,959,066 |
| تعداد دریافت فایل اصل مقاله | 62,423,260 |
Evaluation of Key Parameters Affecting the Bearing Capacity of Helical Piles | ||
| Journal of Rehabilitation in Civil Engineering | ||
| دوره 14، شماره 2 - شماره پیاپی 42، مرداد 2026 اصل مقاله (910.5 K) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2025.2306 | ||
| نویسندگان | ||
| Hamed Bahrami1؛ Soheil Ghareh* 2 | ||
| 1Ph.D. Candidate, Department of Civil Engineering, Islamic Azad University, Arak, Iran | ||
| 2Professor, Department of Civil Engineering, Payame Noor University, Tehran, Iran. | ||
| تاریخ دریافت: 25 فروردین 1404، تاریخ بازنگری: 19 مرداد 1404، تاریخ پذیرش: 26 مرداد 1404 | ||
| چکیده | ||
| This experimental study examined the axial performance of helical piles subjected to compressive and tensile loads, with a particular focus on the effects of helix spacing, number of helices, soil compaction, and loading type. Employing a large-scale frustum-confining vessel (AUT-FCV) to accurately simulate in-situ stress conditions, the behavior of single- and double-helix piles was analyzed in medium- and low-density sandy soils. The findings revealed that soil compaction significantly enhanced pile performance, with medium-dense soils markedly increasing both the compressive and tensile capacities. Optimal performance was observed in double-helix piles with a helix spacing of 1.5 times the diameter, which demonstrated an improved load-bearing capacity and reduced displacement. Notably, in well-compacted soils, the tensile bearing capacity approached or equaled the compressive capacity, underscoring the suitability of helical piles for uplift-resisting applications in such conditions. These results contribute to the advancement of more effective design methodologies for helical pile foundations in sandy soils, particularly in coastal and urban geotechnical contexts. | ||
تازه های تحقیق | ||
| ||
| کلیدواژهها | ||
| Helical pile؛ Bearing capacity؛ Soil density؛ Compressive and Tensile loading؛ Physical modeling | ||
| مراجع | ||
|
[1] Sakr M. Comparison between high strain dynamic and static load tests of helical piles in cohesive soils. Soil Dyn Earthq Eng 2013;54:20–30.
[2] Spagnoli G, Gavin K. Helical piles as a novel foundation system for offshore piled facilities. Abu Dhabi Int. Pet. Exhib. Conf., SPE; 2015, p. D021S030R002.
[3] Chen Y, Deng A, Lu F, Sun H. Failure mechanism and bearing capacity of vertically loaded pile with partially-screwed shaft: Experiment and simulations. Comput Geotech 2020;118:103337.
[4] Chen Y, Deng A, Wang A, Sun H. Performance of screw–shaft pile in sand: Model test and DEM simulation. Comput Geotech 2018;104:118–30.
[5] Alnmr A, Ray RP, Alsirawan R. A state-of-the-art review and numerical study of reinforced expansive soil with granular anchor piles and helical piles. Sustainability 2023;15:2802.
[6] Ghaly A, Hanna A. Experimental and theoretical studies on installation torque of screw anchors. Can Geotech J 1991;28:353–64.
[7] Perko HA. Energy method for predicting installation torque of helical foundations and anchors. New Technol. Des. Dev. Deep Found., 2000, p. 342–52.
[8] Tsuha C de HC, Aoki N. Relationship between installation torque and uplift capacity of deep helical piles in sand. Can Geotech J 2010;47:635–47.
[9] Sakr M, Bartlett F. High capacity helical piles–a new dimension for bridge foundations. Proc. 8th Int. Conf. short Mediu. span Bridg. Niagara Falls, Canada, 2010.
[10] Tsuha C de HC, Aoki N, Rault G, Thorel L, Garnier J. Evaluation of the efficiencies of helical anchor plates in sand by centrifuge model tests. Can Geotech J 2012;49:1102–14.
[11] el-Rahim A, Hamdy HA, Taha YK. The compression and uplift bearing capacities of helical piles in cohesionless soil. JES J Eng Sci 2013;41:2055–64.
[12] Abdrabbo FM, El Wakil AZ. Laterally loaded helical piles in sand. Alexandria Eng J 2016;55:3239–45.
[13] Al-Baghdadi TA, Brown MJ, Knappett JA, Al-Defae AH. Effects of vertical loading on lateral screw pile performance. Proc Inst Civ Eng Eng 2017;170:259–72.
[14] Rao SN, Prasad Y, Shetty MD. The behaviour of model screw piles in cohesive soils. Soils Found 1991;31:35–50.
[15] Mohajerani A, Bosnjak D, Bromwich D. Analysis and design methods of screw piles: A review. Soils Found 2016;56:115–28.
[16] El Sharnouby MM, El Naggar MH. Field investigation of axial monotonic and cyclic performance of reinforced helical pulldown micropiles. Can Geotech J 2012;49:560–73.
[17] Lutenegger AJ. Behavior of multi-helix screw anchors in sand. Proc. 14th Pan-American Conf. Soil Mech. Geotech. Eng., 2011, p. 126.
[18] Tsuha C de HC, Santos T da C, Rault G, Thorel L, Garnier J. Influence of multiple helix configuration on the uplift capacity of helical anchors. Congrès Int Mécanique Des Sols Géotechnique 2013;18.
[19] Lutenegger AJ. Cylindrical shear or plate bearing?—Uplift behavior of multi-helix screw anchors in clay. Contemp. Top. Deep Found., 2009, p. 456–63.
[20] Nasr M. Performance-based design for helical piles. Contemp. Top. Deep Found., 2009, p. 496–503.
[21] Di Bernardo G. Helical pile Deck foundation. New Jersey Deck Boulder, USA 2012.
[22] Khazaei J, Eslami A. Geotechnical behavior of helical piles via physical modeling by Frustum Confining Vessel (FCV). Int J Geogr Geol 2016;5:167–81.
[23] Ullah SN, O’Loughlin C, Hu Y, Hou LF. Torsional installation and vertical tensile capacity of helical piles in clay. Géotechnique 2023:1–17.
[24] Garakani AA, Serjoie KA. Ultimate bearing capacity of helical piles as electric transmission tower foundations in unsaturated soils: Analytical, numerical, and experimental investigations. Int J Geomech 2022;22:4022194.
[25] Sakr M. Installation and performance characteristics of high capacity helical piles in cohesionless soils. DFI Journal-The J Deep Found Inst 2011;5:39–57.
[26] Jamill AS, Abbas HO. Effect of screw piles spacing on group compressive capacity in soft clay. IOP Conf. Ser. Mater. Sci. Eng., vol. 1076, IOP Publishing; 2021, p. 12098.
[27] Seifi S, Nayeri A, Lajevardi SH. Investigating the Impact of Geometrical Properties of Helical Piles Buried in the Layered Soil on the Compressive and Tensile Load-Bearing Capacity. Int J Geosynth Gr Eng 2024;10:69. https://doi.org/10.1007/s40891-024-00559-x.
[28] Simonenko S, Loya JA, Rodriguez-Millan M. An Experimental and Numerical Study on the Influence of Helices of Screw Piles Positions on Their Bearing Capacity in Sandy Soils. Materials (Basel) 2024;17. https://doi.org/10.3390/ma17020525.
[29] Asgari A, Arjomand MA, Bagheri M, Ebadi-Jamkhaneh M, Mostafaei Y. Assessment of Experimental Data and Analytical Method of Helical Pile Capacity Under Tension and Compressive Loading in Dense Sand. Buildings 2025;15. https://doi.org/10.3390/buildings15152683.
[30] Esmailzade M, Eslami A, McCartney JS. Comparison of frustum confining vessel (FCV) and full-scale testing for helical and expanded piles geotechnical performance. Mar Georesources Geotechnol 2025;43:284–304.
[31] Sedran G. Experimental and analytical study of a frustum confining vessel 1999.
[32] Garnier J, Gaudin C, Springman SM, Culligan PJ, Goodings D, Konig D, et al. Catalogue of scaling laws and similitude questions in geotechnical centrifuge modelling. Int J Phys Model Geotech 2007;7:1–23.
[33] Esmailzade M, Eslami A. Experimental study on performance and enhanced methods of helical piles using Frustum Confining Vessel in Anzali Sand. Ocean Eng 2025;324:120624. https://doi.org/https://doi.org/10.1016/j.oceaneng.2025.120624. | ||
|
آمار تعداد مشاهده مقاله: 114 تعداد دریافت فایل اصل مقاله: 146 |
||