| DOI: | 10.1007/s11069-020-04090-w
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| 论文题名: | Seismic settlement of a strip foundation resting on a dry sand |
| 作者: | Alzabeebee S.
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| 刊名: | Natural Hazards
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| ISSN: | 0921030X
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| 出版年: | 2020
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| 卷: | 103, 期:2 | | 起始页码: | 2395
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| 结束页码: | 2425
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| 语种: | 英语
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| 中文关键词: | Earthquake
; Finite element analysis
; Foundation embedment
; Seismic settlement
; Strip foundation
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| 英文关键词: | earthquake event
; finite element method
; foundation
; sandy soil
; seismic response
; soil-structure interaction
; structural response
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| 英文摘要: | Seismic settlement of shallow foundations constructed in seismic active areas should be considered for a reasonable estimation of the total settlement. However, the trend of the seismic settlement of shallow foundation constructed on a sandy soil is not clearly understood and it is estimated by designer using simple analytical methods. These methods do not consider the effect of the soil–structure interaction. This research, therefore, reports the results of 105 robust finite element models developed to investigate the seismic settlement of a shallow foundation constructed on a dry sand. The influence of the load applied on the foundation, relative density of sand, foundation embedment, peak ground acceleration of the earthquake shake, thickness of the sandy soil, and the dominant frequency of the earthquake shake have been examined to provide a comprehensive understanding of the parameters influencing the seismic settlement. The results of the analyses showed that increasing the load applied on the foundation or the peak ground acceleration remarkably increases the seismic settlement, while increasing the embedment depth remarkably reduces the seismic settlement. In addition, the relationship between the thickness of the sandy layer and the seismic settlement is found to be very complex and noticeably influenced by the relative density of the sand. More importantly, it was found that the seismic settlement dramatically increases when the dominant frequency of the earthquake approaches the natural frequency of the system. Thus, all these parameters are important and should be considered by designers for a reasonable estimation of the seismic settlement. The conclusions drawn from this paper will aid the development of a good analytical method in future, and the results reported in this paper also provide useful and novel database to designers and practitioners. © 2020, Springer Nature B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/168378
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| Appears in Collections: | 气候变化与战略
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作者单位: | Department of Roads and Transport Engineering, College of Engineering, University of Al-Qadisiyah, Al-Qadisiyah, Iraq
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| Recommended Citation: | |
Alzabeebee S.. Seismic settlement of a strip foundation resting on a dry sand[J]. Natural Hazards,2020-01-01,103(2)
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