Influence of P-wave oblique incidence on seismic response of helical piles in soft soil sites
Abstract In regions susceptible to earthquakes, an increasing number of building structures are employing helical piles as their foundational system due to their commendable seismic performance. This paper investigates the vertical displacements of the helical pile-soil model, dynamic p-y curves, an...
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| Language: | English |
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Nature Portfolio
2025-06-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-92808-w |
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| author | Hang Cen Hui-yue Wang De-long Huang Jian-rong Xu Sha-sha Yu Chang-lu Xu Zhong-ling Zong Wen Zhou Zi-yuan Huang |
| author_facet | Hang Cen Hui-yue Wang De-long Huang Jian-rong Xu Sha-sha Yu Chang-lu Xu Zhong-ling Zong Wen Zhou Zi-yuan Huang |
| author_sort | Hang Cen |
| collection | DOAJ |
| description | Abstract In regions susceptible to earthquakes, an increasing number of building structures are employing helical piles as their foundational system due to their commendable seismic performance. This paper investigates the vertical displacements of the helical pile-soil model, dynamic p-y curves, and seismic subsidence of helical piles in marine soft soil sites under seismic motions, considering the effects of various types of seismic waves, seismic intensity, angle of incidence, and the number of helical blades. The results demonstrate that the vertical displacement of double-blade helical piles is smaller than that of single-blade helical piles. Furthermore, the vertical displacement of helical pile-soil systems is influenced by the type of seismic wave, seismic intensity, and angle of incident. Moreover, the seismic subsidence of helical piles is significantly influenced by the peak ground acceleration and the frequency of the seismic wave, both of which are related to the angle of incident. Finally, this paper rectifies the p-y curve of soft soil in the API specification based on the angle of incidence. The conclusions of this study provide a basis for the seismic design of helical piles in marine soft soil sites. |
| format | Article |
| id | doaj-art-4572104e31454ccd849d59dd2d6982b0 |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-4572104e31454ccd849d59dd2d6982b02025-08-20T03:20:06ZengNature PortfolioScientific Reports2045-23222025-06-0115112310.1038/s41598-025-92808-wInfluence of P-wave oblique incidence on seismic response of helical piles in soft soil sitesHang Cen0Hui-yue Wang1De-long Huang2Jian-rong Xu3Sha-sha Yu4Chang-lu Xu5Zhong-ling Zong6Wen Zhou7Zi-yuan Huang8School of Civil and Ocean Engineering, Jiangsu Ocean UniversitySchool of Civil and Ocean Engineering, Jiangsu Ocean UniversitySchool of Civil and Ocean Engineering, Jiangsu Ocean UniversityLogistics and Infrastructure Administrative Office, Jiangsu Ocean UniversitySchool of Civil and Ocean Engineering, Jiangsu Ocean UniversitySchool of Civil and Ocean Engineering, Jiangsu Ocean UniversitySchool of Civil and Ocean Engineering, Jiangsu Ocean UniversityEarthquake Administration of Hainan ProvinceSchool of Civil Engineering, Harbin Institute of TechnologyAbstract In regions susceptible to earthquakes, an increasing number of building structures are employing helical piles as their foundational system due to their commendable seismic performance. This paper investigates the vertical displacements of the helical pile-soil model, dynamic p-y curves, and seismic subsidence of helical piles in marine soft soil sites under seismic motions, considering the effects of various types of seismic waves, seismic intensity, angle of incidence, and the number of helical blades. The results demonstrate that the vertical displacement of double-blade helical piles is smaller than that of single-blade helical piles. Furthermore, the vertical displacement of helical pile-soil systems is influenced by the type of seismic wave, seismic intensity, and angle of incident. Moreover, the seismic subsidence of helical piles is significantly influenced by the peak ground acceleration and the frequency of the seismic wave, both of which are related to the angle of incident. Finally, this paper rectifies the p-y curve of soft soil in the API specification based on the angle of incidence. The conclusions of this study provide a basis for the seismic design of helical piles in marine soft soil sites.https://doi.org/10.1038/s41598-025-92808-wHelical pileMarine soft soil sitesOblique incidence of P-waveViscous-spring boundariesEquivalent seismic nodal forceVertical displacement |
| spellingShingle | Hang Cen Hui-yue Wang De-long Huang Jian-rong Xu Sha-sha Yu Chang-lu Xu Zhong-ling Zong Wen Zhou Zi-yuan Huang Influence of P-wave oblique incidence on seismic response of helical piles in soft soil sites Scientific Reports Helical pile Marine soft soil sites Oblique incidence of P-wave Viscous-spring boundaries Equivalent seismic nodal force Vertical displacement |
| title | Influence of P-wave oblique incidence on seismic response of helical piles in soft soil sites |
| title_full | Influence of P-wave oblique incidence on seismic response of helical piles in soft soil sites |
| title_fullStr | Influence of P-wave oblique incidence on seismic response of helical piles in soft soil sites |
| title_full_unstemmed | Influence of P-wave oblique incidence on seismic response of helical piles in soft soil sites |
| title_short | Influence of P-wave oblique incidence on seismic response of helical piles in soft soil sites |
| title_sort | influence of p wave oblique incidence on seismic response of helical piles in soft soil sites |
| topic | Helical pile Marine soft soil sites Oblique incidence of P-wave Viscous-spring boundaries Equivalent seismic nodal force Vertical displacement |
| url | https://doi.org/10.1038/s41598-025-92808-w |
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