Effects of Posttensioning Slippage on 2-Way Spanning Concrete Slabs
This paper investigates the effect of improper posttensioning of a 2-way spanning concrete slab subject to a central point load. Due to plate slippage alone, the support conditions only offered a 1-way spanning action which could have led to premature failure with dangerous consequences. Posttension...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/980840 |
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| author | Niall Holmes Eoin Byrne |
| author_facet | Niall Holmes Eoin Byrne |
| author_sort | Niall Holmes |
| collection | DOAJ |
| description | This paper investigates the effect of improper posttensioning of a 2-way spanning concrete slab subject to a central point load. Due to plate slippage alone, the support conditions only offered a 1-way spanning action which could have led to premature failure with dangerous consequences. Posttensioning can strengthen a flat slab against punching shear by controlling deflections and cracking under service loads compared with traditional punching shear reinforcing methods leading to more slender structures and economic solutions for longer spans. However, if the method is not properly applied, these thinner floor plates can fail in a brittle and sudden manner by punching at ultimate limit state and excessive deflection in serviceability. Concrete slabs containing traditional shear reinforcement performed adequately and demonstrated that the critical punching shear perimeter, defined as twice the depth of the slab, was confirmed from measured deflections and crack pattern analysis. |
| format | Article |
| id | doaj-art-f2c6fd8096a449be99ea6f2aa2022452 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-f2c6fd8096a449be99ea6f2aa20224522025-08-20T02:21:58ZengWileyAdvances in Civil Engineering1687-80861687-80942015-01-01201510.1155/2015/980840980840Effects of Posttensioning Slippage on 2-Way Spanning Concrete SlabsNiall Holmes0Eoin Byrne1School of Civil & Structural Engineering, Dublin Institute of Technology, Bolton Street, Dublin 1, IrelandSchool of Civil & Structural Engineering, Dublin Institute of Technology, Bolton Street, Dublin 1, IrelandThis paper investigates the effect of improper posttensioning of a 2-way spanning concrete slab subject to a central point load. Due to plate slippage alone, the support conditions only offered a 1-way spanning action which could have led to premature failure with dangerous consequences. Posttensioning can strengthen a flat slab against punching shear by controlling deflections and cracking under service loads compared with traditional punching shear reinforcing methods leading to more slender structures and economic solutions for longer spans. However, if the method is not properly applied, these thinner floor plates can fail in a brittle and sudden manner by punching at ultimate limit state and excessive deflection in serviceability. Concrete slabs containing traditional shear reinforcement performed adequately and demonstrated that the critical punching shear perimeter, defined as twice the depth of the slab, was confirmed from measured deflections and crack pattern analysis.http://dx.doi.org/10.1155/2015/980840 |
| spellingShingle | Niall Holmes Eoin Byrne Effects of Posttensioning Slippage on 2-Way Spanning Concrete Slabs Advances in Civil Engineering |
| title | Effects of Posttensioning Slippage on 2-Way Spanning Concrete Slabs |
| title_full | Effects of Posttensioning Slippage on 2-Way Spanning Concrete Slabs |
| title_fullStr | Effects of Posttensioning Slippage on 2-Way Spanning Concrete Slabs |
| title_full_unstemmed | Effects of Posttensioning Slippage on 2-Way Spanning Concrete Slabs |
| title_short | Effects of Posttensioning Slippage on 2-Way Spanning Concrete Slabs |
| title_sort | effects of posttensioning slippage on 2 way spanning concrete slabs |
| url | http://dx.doi.org/10.1155/2015/980840 |
| work_keys_str_mv | AT niallholmes effectsofposttensioningslippageon2wayspanningconcreteslabs AT eoinbyrne effectsofposttensioningslippageon2wayspanningconcreteslabs |