A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Vibration Isolation Mechanism of Row Piles Under Single-Point Excitation
https://orcid.org/http://orcid.org/0000-0002-1030-7749
https://orcid.org/http://orcid.org/0000-0002-1050-7425
https://orcid.org/http://orcid.org/0000-0001-5131-2328
https://orcid.org/http://orcid.org/0000-0002-7336-7669
To study the vibration isolation mechanism of row piles exposed to vibrations generated at a single point, a finite element model of a foundation using infinite element boundaries is established based on the theory of an elastic half-space body. The model included a single-point vibration source in the free field and piles arranged in a row, and corresponding contour maps of the amplitude dissipation ratio (Ar) were drawn. The results show that the vibration waves radiate out from the excitation point and that their acceleration amplitude decays continuously. The overall vibration isolation progressively improves as the number of piles and the row depth increase. However, the degree of improvement in the isolation effect decreases with increasing depth. If the spacing between row piles is too large, the vibration isolation effect of the row piles will be unsatisfactory. However, reducing the row spacing does not necessarily improve the vibration isolation effect of row piles. Compared with a hollow pile, a solid pile has a better vibration isolation effect, but the difference is not significant. Additionally, the vibration isolation effect of a circular pile is worse than that of a square pile. As the distance between the vibration source and the row piles decreases, the isolation effect becomes more pronounced, but the difference is not pronounced. Furthermore, the isolation effect of row piles is better for low-frequency vibrations than for intermediate- and high-frequency vibrations.
Vibration Isolation Mechanism of Row Piles Under Single-Point Excitation
https://orcid.org/http://orcid.org/0000-0002-1030-7749
https://orcid.org/http://orcid.org/0000-0002-1050-7425
https://orcid.org/http://orcid.org/0000-0001-5131-2328
https://orcid.org/http://orcid.org/0000-0002-7336-7669
To study the vibration isolation mechanism of row piles exposed to vibrations generated at a single point, a finite element model of a foundation using infinite element boundaries is established based on the theory of an elastic half-space body. The model included a single-point vibration source in the free field and piles arranged in a row, and corresponding contour maps of the amplitude dissipation ratio (Ar) were drawn. The results show that the vibration waves radiate out from the excitation point and that their acceleration amplitude decays continuously. The overall vibration isolation progressively improves as the number of piles and the row depth increase. However, the degree of improvement in the isolation effect decreases with increasing depth. If the spacing between row piles is too large, the vibration isolation effect of the row piles will be unsatisfactory. However, reducing the row spacing does not necessarily improve the vibration isolation effect of row piles. Compared with a hollow pile, a solid pile has a better vibration isolation effect, but the difference is not significant. Additionally, the vibration isolation effect of a circular pile is worse than that of a square pile. As the distance between the vibration source and the row piles decreases, the isolation effect becomes more pronounced, but the difference is not pronounced. Furthermore, the isolation effect of row piles is better for low-frequency vibrations than for intermediate- and high-frequency vibrations.
Vibration Isolation Mechanism of Row Piles Under Single-Point Excitation
https://orcid.org/http://orcid.org/0000-0002-1030-7749
https://orcid.org/http://orcid.org/0000-0002-1050-7425
https://orcid.org/http://orcid.org/0000-0001-5131-2328
https://orcid.org/http://orcid.org/0000-0002-7336-7669
To study the vibration isolation mechanism of row piles exposed to vibrations generated at a single point, a finite element model of a foundation using infinite element boundaries is established based on the theory of an elastic half-space body. The model included a single-point vibration source in the free field and piles arranged in a row, and corresponding contour maps of the amplitude dissipation ratio (Ar) were drawn. The results show that the vibration waves radiate out from the excitation point and that their acceleration amplitude decays continuously. The overall vibration isolation progressively improves as the number of piles and the row depth increase. However, the degree of improvement in the isolation effect decreases with increasing depth. If the spacing between row piles is too large, the vibration isolation effect of the row piles will be unsatisfactory. However, reducing the row spacing does not necessarily improve the vibration isolation effect of row piles. Compared with a hollow pile, a solid pile has a better vibration isolation effect, but the difference is not significant. Additionally, the vibration isolation effect of a circular pile is worse than that of a square pile. As the distance between the vibration source and the row piles decreases, the isolation effect becomes more pronounced, but the difference is not pronounced. Furthermore, the isolation effect of row piles is better for low-frequency vibrations than for intermediate- and high-frequency vibrations.
Vibration Isolation Mechanism of Row Piles Under Single-Point Excitation
Lecture Notes in Civil Engineering
Tutumluer, Erol (editor) / Chen, Xiaobin (editor) / Xiao, Yuanjie (editor) / Liu, Jing-lei (author) / Zhang, Rui-heng (author) / Zhao, Xiao-yu (author) / Liu, Huan (author)
Advances in Environmental Vibration and Transportation Geodynamics ; Chapter: 3 ; 39-73
2020-04-08
35 pages
Article/Chapter (Book)
Electronic Resource
English
Structural vibration isolation by rows of piles
| British Library Conference Proceedings | 1995
Nonlinear Dynamic Response of Piles under Horizontal Excitation
| Online Contents | 2010
Nonlinear Dynamic Response of Piles under Horizontal Excitation
| British Library Online Contents | 2010