Pile foundation response to ground vibration from rock blasting
Ground vibrations from blasting are undesirable and they are very short in duration with high principal frequencies and high amplitude. Structural response to that kind of excitations may differ significantly from that generated by lower-frequency earthquake vibrations. In practice, the damage to ne...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/81649 http://hdl.handle.net/10220/42771 |
| _version_ | 1811686433910423552 |
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| author | Jayasinghe, Laddu Bhagya Zhao, Zhiye Goh, Anthony Teck Chee Zhou, Hongyuan Gui, Yilin |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Jayasinghe, Laddu Bhagya Zhao, Zhiye Goh, Anthony Teck Chee Zhou, Hongyuan Gui, Yilin |
| author_sort | Jayasinghe, Laddu Bhagya |
| collection | NTU |
| description | Ground vibrations from blasting are undesirable and they are very short in duration with high principal frequencies and high amplitude. Structural response to that kind of excitations may differ significantly from that generated by lower-frequency earthquake vibrations. In practice, the damage to nearby structures to generated ground vibrations has been controlled by various codes and regulations available. However, the existing vibrations limits are not always applicable, as they depend on the geological conditions of the site and the dynamic characteristics of the structure. This paper investigated the influence of the rock-soil interface on the response of pile foundation to ground-borne vibration from rock blasting, through numerical simulations using finite element software LS DYNA. It is found that the slope of the rock-soil interface greatly influences the location of damage and the extent of damage on the pile. The bottom of the pile is subjected to a larger blast pressure and stresses are highly concentrated at the pile bottom. Thus, the pile bottom can fail in shear before it reaches its plastic moment capacity. |
| first_indexed | 2024-10-01T05:00:21Z |
| format | Conference Paper |
| id | ntu-10356/81649 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:00:21Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/816492019-12-06T14:35:31Z Pile foundation response to ground vibration from rock blasting Jayasinghe, Laddu Bhagya Zhao, Zhiye Goh, Anthony Teck Chee Zhou, Hongyuan Gui, Yilin School of Civil and Environmental Engineering Piling and Foundation Specialists Federation (DFI-PFSF) Conference 2017 Rock blasting Numerical simulation Ground vibrations from blasting are undesirable and they are very short in duration with high principal frequencies and high amplitude. Structural response to that kind of excitations may differ significantly from that generated by lower-frequency earthquake vibrations. In practice, the damage to nearby structures to generated ground vibrations has been controlled by various codes and regulations available. However, the existing vibrations limits are not always applicable, as they depend on the geological conditions of the site and the dynamic characteristics of the structure. This paper investigated the influence of the rock-soil interface on the response of pile foundation to ground-borne vibration from rock blasting, through numerical simulations using finite element software LS DYNA. It is found that the slope of the rock-soil interface greatly influences the location of damage and the extent of damage on the pile. The bottom of the pile is subjected to a larger blast pressure and stresses are highly concentrated at the pile bottom. Thus, the pile bottom can fail in shear before it reaches its plastic moment capacity. Accepted version 2017-06-29T06:57:11Z 2019-12-06T14:35:31Z 2017-06-29T06:57:11Z 2019-12-06T14:35:31Z 2017-03-01 2017 Conference Paper Jayasinghe, L. B., Goh, A. T. C., Zhao, Z., Zhou, H., & Gui, Y. (2017). Pile foundation response to ground vibration from rock blasting. Piling and Foundation Specialists Federation (DFI-PFSF) Conference 2017. https://hdl.handle.net/10356/81649 http://hdl.handle.net/10220/42771 197558 en © 2017 The Author(s) (Piling and Foundation Specialists Federation (DFI-PFSF) Conference 2017). This is the author created version of a work that has been peer reviewed and accepted for publication by Piling and Foundation Specialists Federation (DFI-PFSF) Conference 2017, The Author(s) (Piling and Foundation Specialists Federation (DFI-PFSF) Conference 2017). It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. 7 p. application/pdf |
| spellingShingle | Rock blasting Numerical simulation Jayasinghe, Laddu Bhagya Zhao, Zhiye Goh, Anthony Teck Chee Zhou, Hongyuan Gui, Yilin Pile foundation response to ground vibration from rock blasting |
| title | Pile foundation response to ground vibration from rock blasting |
| title_full | Pile foundation response to ground vibration from rock blasting |
| title_fullStr | Pile foundation response to ground vibration from rock blasting |
| title_full_unstemmed | Pile foundation response to ground vibration from rock blasting |
| title_short | Pile foundation response to ground vibration from rock blasting |
| title_sort | pile foundation response to ground vibration from rock blasting |
| topic | Rock blasting Numerical simulation |
| url | https://hdl.handle.net/10356/81649 http://hdl.handle.net/10220/42771 |
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