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Structural parameter variation working on the performance of anti-uplift multibell underreamed anchors
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Chen, Chen, Xia, Yuanyou, Lin, Manqing and Ni, Qing (2022) Structural parameter variation working on the performance of anti-uplift multibell underreamed anchors. Scientific Reports, 12 (1). 15015. doi:10.1038/s41598-022-19353-8 ISSN 2045-2322.
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WRAP-Structural-parameter-variation-working-on-the-performance-of-anti-uplift-multibell-underreamed-anchors-Ni-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (18Mb) | Preview |
Official URL: http://dx.doi.org/10.1038/s41598-022-19353-8
Abstract
The structural parameters of multibell underreamed anchors play a crucial role in anchoring performance. The parameters of multibell underreamed anchor investigations are helpful when exploring optimized anchor structures. Based on the results of small-scale physical modelling tests, two types of multibell underreamed anchors were adopted under vertical uplifting loads. Numerical investigations were employed to study the effect of bell spacing, underream structure and bell dimension on the ultimate uplift bearing capacity. After an analysis of the anchorage mechanism, the anchoring efficiency was evaluated by the anchoring force provided by the unit concrete usage of the anchor, and the structural parameter λ equal to the surface area ratios of the expanded bell cone to the straight shaft between bells was defined. Then, the anchoring efficiency optimized structural parameters were presented. An analysis of model tests and simulation results showed that compared to concave bell surfaces, the convex shape could enhance the ultimate bearing capacity of a multibell underreamed anchor. There is an optimal value for the spacing of neighbouring bells, and there are three models of mechanisms for multibell anchors pulling out. When λ ∈ [1, 1.8], the multibell anchors can perform most efficiently to achieve their structural advantages.
| Item Type: | Journal Article | ||||||||||||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Anchorage (Structural engineering), Civil engineering -- Research, Structural engineering | ||||||||||||||||||
| Journal or Publication Title: | Scientific Reports | ||||||||||||||||||
| Publisher: | Nature Publishing Group | ||||||||||||||||||
| ISSN: | 2045-2322 | ||||||||||||||||||
| Official Date: | 2 September 2022 | ||||||||||||||||||
| Dates: |
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| Volume: | 12 | ||||||||||||||||||
| Number: | 1 | ||||||||||||||||||
| Number of Pages: | 19 | ||||||||||||||||||
| Article Number: | 15015 | ||||||||||||||||||
| DOI: | 10.1038/s41598-022-19353-8 | ||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
| Date of first compliant deposit: | 18 October 2022 | ||||||||||||||||||
| Date of first compliant Open Access: | 19 October 2022 | ||||||||||||||||||
| RIOXX Funder/Project Grant: |
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