Deformations of temporary wooden supports used to reduce building deflections in mining areas
Temporary supports, consisting of a stack of wooden elements and a hydraulic jack, are used in the process of removing deflections in buildings with one to three aboveground floors in mining areas. During uneven raising, the supports are loaded monotonically, unloaded and loaded cyclically. Laborato...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2018-01-01
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| Series: | E3S Web of Conferences |
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| Online Access: | https://doi.org/10.1051/e3sconf/20183603002 |
| _version_ | 1818644793616498688 |
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| author | Gromysz Krzysztof |
| author_facet | Gromysz Krzysztof |
| author_sort | Gromysz Krzysztof |
| collection | DOAJ |
| description | Temporary supports, consisting of a stack of wooden elements and a hydraulic jack, are used in the process of removing deflections in buildings with one to three aboveground floors in mining areas. During uneven raising, the supports are loaded monotonically, unloaded and loaded cyclically. Laboratory tests were designed for the supports. For the investigated range of loads of 0 to 400 kN, under a growing load, a linear relationship exists between a load and the change in the stack length, which signifies that the deformations of wooden elements and displacements related to their mutual interactions increase proportionally. A seemingly higher stack stiffness is seen at the beginning of the unloading process and for cyclical loads, meaning that in this phase of loading, the material deformation of the wooden elements and the jack is responsible for changing the jack length in this load phase, with a negligible presence of mutual displacements of wooden elements. The support, after being unloaded, returns to the initial position and its permanent deformations are not observed. The stiffness of a temporary support decreases as the height of the stack of wooden elements increases. |
| first_indexed | 2024-12-17T00:20:30Z |
| format | Article |
| id | doaj.art-06335f0ccf1c4bc888fd5ea357e9708c |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-17T00:20:30Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-06335f0ccf1c4bc888fd5ea357e9708c2022-12-21T22:10:35ZengEDP SciencesE3S Web of Conferences2267-12422018-01-01360300210.1051/e3sconf/20183603002e3sconf_big2018_03002Deformations of temporary wooden supports used to reduce building deflections in mining areasGromysz KrzysztofTemporary supports, consisting of a stack of wooden elements and a hydraulic jack, are used in the process of removing deflections in buildings with one to three aboveground floors in mining areas. During uneven raising, the supports are loaded monotonically, unloaded and loaded cyclically. Laboratory tests were designed for the supports. For the investigated range of loads of 0 to 400 kN, under a growing load, a linear relationship exists between a load and the change in the stack length, which signifies that the deformations of wooden elements and displacements related to their mutual interactions increase proportionally. A seemingly higher stack stiffness is seen at the beginning of the unloading process and for cyclical loads, meaning that in this phase of loading, the material deformation of the wooden elements and the jack is responsible for changing the jack length in this load phase, with a negligible presence of mutual displacements of wooden elements. The support, after being unloaded, returns to the initial position and its permanent deformations are not observed. The stiffness of a temporary support decreases as the height of the stack of wooden elements increases.https://doi.org/10.1051/e3sconf/20183603002deflected buildingstemporary wooden supportstiffness |
| spellingShingle | Gromysz Krzysztof Deformations of temporary wooden supports used to reduce building deflections in mining areas E3S Web of Conferences deflected buildings temporary wooden support stiffness |
| title | Deformations of temporary wooden supports used to reduce building deflections in mining areas |
| title_full | Deformations of temporary wooden supports used to reduce building deflections in mining areas |
| title_fullStr | Deformations of temporary wooden supports used to reduce building deflections in mining areas |
| title_full_unstemmed | Deformations of temporary wooden supports used to reduce building deflections in mining areas |
| title_short | Deformations of temporary wooden supports used to reduce building deflections in mining areas |
| title_sort | deformations of temporary wooden supports used to reduce building deflections in mining areas |
| topic | deflected buildings temporary wooden support stiffness |
| url | https://doi.org/10.1051/e3sconf/20183603002 |
| work_keys_str_mv | AT gromyszkrzysztof deformationsoftemporarywoodensupportsusedtoreducebuildingdeflectionsinminingareas |