Mitigation of ground vibrations by circular arrays of rigid blocks
Andersen, Lars V. ; Peplow, Andrew T. LU
and Persson, Peter
LU
(2019)
7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2019
In COMPDYN Proceedings
2.
p.3422-3447
- Abstract
Pile driving and other activities in the built environment cause ground vibration at low frequencies. This may result in annoyance to people as well as damage to civil structures. It is known that masses added on the ground surface can have an impact on the vibration levels in the surrounding environment. Hence, employing a semi-analytical model for rigid blocks on the surface of a layered ground, this paper investigates whether circular arrays of such blocks can be used as a means of vibration mitigation. The frequency range 0–80 Hz is considered, since this is relevant to whole-body vibrations of humans as well as the fundamental modes of resonance in building elements, e.g., floors and walls. Two different soil profiles are analysed:... (More)
Pile driving and other activities in the built environment cause ground vibration at low frequencies. This may result in annoyance to people as well as damage to civil structures. It is known that masses added on the ground surface can have an impact on the vibration levels in the surrounding environment. Hence, employing a semi-analytical model for rigid blocks on the surface of a layered ground, this paper investigates whether circular arrays of such blocks can be used as a means of vibration mitigation. The frequency range 0–80 Hz is considered, since this is relevant to whole-body vibrations of humans as well as the fundamental modes of resonance in building elements, e.g., floors and walls. Two different soil profiles are analysed: a soft dry sand layer over a till half-space and a soft wet clay layer over a lime half-space. Further, three configurations of the block arrays are taken into consideration, and for the first soil profile also the height of the blocks is varied to test its influence on the insertion loss in a zone 20–40 m away from the source. The aim is to quantify the overall insertion loss that can be expected using the proposed methodology. Further, the variation in insertion loss caused by changes in the block array configuration is examined.
(Less)
- author
- Andersen, Lars V.
; Peplow, Andrew T.
LU
and Persson, Peter
LU
- organization
- publishing date
- 2019
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Insertion Loss, Layered Half-Space, Soil, Wave Impedance, Wave Propagation
- host publication
- COMPDYN 2019 - 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Proceedings
- series title
- COMPDYN Proceedings
- editor
- Papadrakakis, Manolis and Fragiadakis, Michalis
- volume
- 2
- pages
- 26 pages
- publisher
- National Technical University of Athens
- conference name
- 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2019
- conference location
- Crete, Greece
- conference dates
- 2019-06-24 - 2019-06-26
- external identifiers
-
- scopus:85079062646
- ISSN
- 2623-3347
- ISBN
- 9786188284470
- language
- English
- LU publication?
- yes
- id
- 86d19b57-b7ec-4251-a5e4-8d3d2b8b5093
- date added to LUP
- 2020-02-17 11:29:40
- date last changed
- 2022-04-18 20:36:50
@inproceedings{86d19b57-b7ec-4251-a5e4-8d3d2b8b5093,
abstract = {{<p>Pile driving and other activities in the built environment cause ground vibration at low frequencies. This may result in annoyance to people as well as damage to civil structures. It is known that masses added on the ground surface can have an impact on the vibration levels in the surrounding environment. Hence, employing a semi-analytical model for rigid blocks on the surface of a layered ground, this paper investigates whether circular arrays of such blocks can be used as a means of vibration mitigation. The frequency range 0–80 Hz is considered, since this is relevant to whole-body vibrations of humans as well as the fundamental modes of resonance in building elements, e.g., floors and walls. Two different soil profiles are analysed: a soft dry sand layer over a till half-space and a soft wet clay layer over a lime half-space. Further, three configurations of the block arrays are taken into consideration, and for the first soil profile also the height of the blocks is varied to test its influence on the insertion loss in a zone 20–40 m away from the source. The aim is to quantify the overall insertion loss that can be expected using the proposed methodology. Further, the variation in insertion loss caused by changes in the block array configuration is examined.</p>}},
author = {{Andersen, Lars V. and Peplow, Andrew T. and Persson, Peter}},
booktitle = {{COMPDYN 2019 - 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Proceedings}},
editor = {{Papadrakakis, Manolis and Fragiadakis, Michalis}},
isbn = {{9786188284470}},
issn = {{2623-3347}},
keywords = {{Insertion Loss; Layered Half-Space; Soil; Wave Impedance; Wave Propagation}},
language = {{eng}},
pages = {{3422--3447}},
publisher = {{National Technical University of Athens}},
series = {{COMPDYN Proceedings}},
title = {{Mitigation of ground vibrations by circular arrays of rigid blocks}},
volume = {{2}},
year = {{2019}},
}