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...
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Online Access: | http://dx.doi.org/10.3389/feart.2022.941126 https://www.frontiersin.org/articles/10.3389/feart.2022.941126/full |
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crfrontiers:10.3389/feart.2022.941126 2024-03-03T08:47:55+00:00 Behavior of large shaft sinking headframe subjected to uneven foundation settlement Wang, Bo Liu, Zhiqiang Yuan, Shuai 2022 http://dx.doi.org/10.3389/feart.2022.941126 https://www.frontiersin.org/articles/10.3389/feart.2022.941126/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 10 ISSN 2296-6463 General Earth and Planetary Sciences journal-article 2022 crfrontiers https://doi.org/10.3389/feart.2022.941126 2024-02-03T23:18:17Z 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 Frontiers (Publisher) Frontiers in Earth Science 10 |
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General Earth and Planetary Sciences |
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General Earth and Planetary Sciences Wang, Bo Liu, Zhiqiang Yuan, Shuai Behavior of large shaft sinking headframe subjected to uneven foundation settlement |
topic_facet |
General Earth and Planetary Sciences |
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 |
Wang, Bo Liu, Zhiqiang Yuan, Shuai |
author_facet |
Wang, Bo Liu, Zhiqiang Yuan, Shuai |
author_sort |
Wang, Bo |
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 SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/feart.2022.941126 https://www.frontiersin.org/articles/10.3389/feart.2022.941126/full |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Frontiers in Earth Science volume 10 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2022.941126 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
_version_ |
1792504209345609728 |