Behavior of large shaft sinking headframe subjected to uneven foundation settlement
Deep mining is an inevitable trend in China and the world, for which the construction of deep and large vertical shafts is the primary task. A shaft sinking headframe is a basic structure for supporting various hoisting and sinking equipment during vertical shaft construction. The design of the shaf...
Published in: | Frontiers in Earth Science |
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2022
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Online Access: | https://doi.org/10.3389/feart.2022.941126 https://doaj.org/article/cdc7200f6f3e47819e3ae6587407c4d7 |
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ftdoajarticles:oai:doaj.org/article:cdc7200f6f3e47819e3ae6587407c4d7 2023-05-15T17:57:57+02:00 Behavior of large shaft sinking headframe subjected to uneven foundation settlement Bo Wang Zhiqiang Liu Shuai Yuan 2022-07-01T00:00:00Z https://doi.org/10.3389/feart.2022.941126 https://doaj.org/article/cdc7200f6f3e47819e3ae6587407c4d7 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2022.941126/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.941126 https://doaj.org/article/cdc7200f6f3e47819e3ae6587407c4d7 Frontiers in Earth Science, Vol 10 (2022) shaft sinking headframe uneven foundation settlement FE analysis mechanical behavior deep mining Science Q article 2022 ftdoajarticles https://doi.org/10.3389/feart.2022.941126 2022-12-31T00:21:33Z Deep mining is an inevitable trend in China and the world, for which the construction of deep and large vertical shafts is the primary task. A shaft sinking headframe is a basic structure for supporting various hoisting and sinking equipment during vertical shaft construction. The design of the shaft sinking headframe is challenging due to the significant differences in the geometry and working load compared to conventional steel structures. Recently, the effect of uneven foundation settlement on the shaft sinking headframe has been of great concern when sinking shafts by the freezing sinking method or in permafrost soil areas. In this study, finite element calculations were performed to investigate the mechanical behavior of the SA-3 shaft sinking headframe under uneven foundation settlement (0.001–0.006 L) and normal working-load conditions. The results indicate that the most unfavorable condition for the stress of members is the diagonal double foundation settlement, and in the view of the geometric offset, the most unfavorable condition is the same-side double foundation settlement. The corner members near the settled foundation were changed from a state of compression to tension. Uneven foundation settlement of less than 0.001 L is acceptable for the safety and service performance of the shaft sinking headframe. These criteria can be used for reference in engineering practice. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Frontiers in Earth Science 10 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
shaft sinking headframe uneven foundation settlement FE analysis mechanical behavior deep mining Science Q |
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shaft sinking headframe uneven foundation settlement FE analysis mechanical behavior deep mining Science Q Bo Wang Zhiqiang Liu Shuai Yuan Behavior of large shaft sinking headframe subjected to uneven foundation settlement |
topic_facet |
shaft sinking headframe uneven foundation settlement FE analysis mechanical behavior deep mining Science Q |
description |
Deep mining is an inevitable trend in China and the world, for which the construction of deep and large vertical shafts is the primary task. A shaft sinking headframe is a basic structure for supporting various hoisting and sinking equipment during vertical shaft construction. The design of the shaft sinking headframe is challenging due to the significant differences in the geometry and working load compared to conventional steel structures. Recently, the effect of uneven foundation settlement on the shaft sinking headframe has been of great concern when sinking shafts by the freezing sinking method or in permafrost soil areas. In this study, finite element calculations were performed to investigate the mechanical behavior of the SA-3 shaft sinking headframe under uneven foundation settlement (0.001–0.006 L) and normal working-load conditions. The results indicate that the most unfavorable condition for the stress of members is the diagonal double foundation settlement, and in the view of the geometric offset, the most unfavorable condition is the same-side double foundation settlement. The corner members near the settled foundation were changed from a state of compression to tension. Uneven foundation settlement of less than 0.001 L is acceptable for the safety and service performance of the shaft sinking headframe. These criteria can be used for reference in engineering practice. |
format |
Article in Journal/Newspaper |
author |
Bo Wang Zhiqiang Liu Shuai Yuan |
author_facet |
Bo Wang Zhiqiang Liu Shuai Yuan |
author_sort |
Bo Wang |
title |
Behavior of large shaft sinking headframe subjected to uneven foundation settlement |
title_short |
Behavior of large shaft sinking headframe subjected to uneven foundation settlement |
title_full |
Behavior of large shaft sinking headframe subjected to uneven foundation settlement |
title_fullStr |
Behavior of large shaft sinking headframe subjected to uneven foundation settlement |
title_full_unstemmed |
Behavior of large shaft sinking headframe subjected to uneven foundation settlement |
title_sort |
behavior of large shaft sinking headframe subjected to uneven foundation settlement |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/feart.2022.941126 https://doaj.org/article/cdc7200f6f3e47819e3ae6587407c4d7 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Frontiers in Earth Science, Vol 10 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2022.941126/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.941126 https://doaj.org/article/cdc7200f6f3e47819e3ae6587407c4d7 |
op_doi |
https://doi.org/10.3389/feart.2022.941126 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
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1766166465228046336 |