Influence of knots and density distribution on compressive strength of wooden foundation piles

G. Pagella; M. Mirra; G. J.P. Ravenshorst; J. W.G. Van De Kuilen

doi:10.1201/9781003348443-277

Influence of knots and density distribution on compressive strength of wooden foundation piles

G. Pagella, M. Mirra, G. J.P. Ravenshorst, J. W.G. Van De Kuilen

Bio-based Structures & Materials

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

2 Citations (Scopus)

40 Downloads (Pure)

Abstract

This work investigated the influence of knots on the compression strength of wooden foundation piles. The study involved 110 pile segments sawn from 18 spruce and 9 pine piles with a mean diameter of approximately 200 mm, and moisture contents above fiber saturation. The mechanical properties were determined performing both full-scale compression tests on pile segments, and small-scale experiments on discs sawn from selected segments, considering samples with and without knots. A knot ratio (KR) was defined analysing the knots layout of each wooden pile, and evaluating how the compressive strength was influenced by size, number and layout of knots. As final step, a prediction model was implemented based on the dry density and KR of wooden piles, to estimate the influence of knots on their compressive strength.

Original language	English
Title of host publication	Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022
Editors	Alphose Zingoni
Publisher	CRC Press / Balkema - Taylor & Francis Group
Pages	1689-1695
Number of pages	7
ISBN (Print)	978-100334844-3
DOIs	https://doi.org/10.1201/9781003348443-277
Publication status	Published - 2023
Event	8th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2022 - Cape Town, South Africa Duration: 5 Sept 2022 → 7 Sept 2022

Conference

Conference	8th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2022
Country/Territory	South Africa
City	Cape Town
Period	5/09/22 → 7/09/22

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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SEMC2022_273_Full.paperFinal published version, 467 KB

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Pagella, G., Mirra, M., Ravenshorst, G. J. P., & Van De Kuilen, J. W. G. (2023). Influence of knots and density distribution on compressive strength of wooden foundation piles. In A. Zingoni (Ed.), Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022 (pp. 1689-1695). CRC Press / Balkema - Taylor & Francis Group. https://doi.org/10.1201/9781003348443-277

Pagella, G. ; Mirra, M. ; Ravenshorst, G. J.P. et al. / Influence of knots and density distribution on compressive strength of wooden foundation piles. Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022. editor / Alphose Zingoni. CRC Press / Balkema - Taylor & Francis Group, 2023. pp. 1689-1695

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title = "Influence of knots and density distribution on compressive strength of wooden foundation piles",

abstract = "This work investigated the influence of knots on the compression strength of wooden foundation piles. The study involved 110 pile segments sawn from 18 spruce and 9 pine piles with a mean diameter of approximately 200 mm, and moisture contents above fiber saturation. The mechanical properties were determined performing both full-scale compression tests on pile segments, and small-scale experiments on discs sawn from selected segments, considering samples with and without knots. A knot ratio (KR) was defined analysing the knots layout of each wooden pile, and evaluating how the compressive strength was influenced by size, number and layout of knots. As final step, a prediction model was implemented based on the dry density and KR of wooden piles, to estimate the influence of knots on their compressive strength.",

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note = "Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.; 8th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2022 ; Conference date: 05-09-2022 Through 07-09-2022",

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Pagella, G , Mirra, M , Ravenshorst, GJP & Van De Kuilen, JWG 2023, Influence of knots and density distribution on compressive strength of wooden foundation piles. in A Zingoni (ed.), Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022. CRC Press / Balkema - Taylor & Francis Group, pp. 1689-1695, 8th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2022, Cape Town, South Africa, 5/09/22. https://doi.org/10.1201/9781003348443-277

Influence of knots and density distribution on compressive strength of wooden foundation piles. / Pagella, G.; Mirra, M.; Ravenshorst, G. J.P. et al.
Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022. ed. / Alphose Zingoni. CRC Press / Balkema - Taylor & Francis Group, 2023. p. 1689-1695.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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AU - Mirra, M.

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N1 - Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2023

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N2 - This work investigated the influence of knots on the compression strength of wooden foundation piles. The study involved 110 pile segments sawn from 18 spruce and 9 pine piles with a mean diameter of approximately 200 mm, and moisture contents above fiber saturation. The mechanical properties were determined performing both full-scale compression tests on pile segments, and small-scale experiments on discs sawn from selected segments, considering samples with and without knots. A knot ratio (KR) was defined analysing the knots layout of each wooden pile, and evaluating how the compressive strength was influenced by size, number and layout of knots. As final step, a prediction model was implemented based on the dry density and KR of wooden piles, to estimate the influence of knots on their compressive strength.

AB - This work investigated the influence of knots on the compression strength of wooden foundation piles. The study involved 110 pile segments sawn from 18 spruce and 9 pine piles with a mean diameter of approximately 200 mm, and moisture contents above fiber saturation. The mechanical properties were determined performing both full-scale compression tests on pile segments, and small-scale experiments on discs sawn from selected segments, considering samples with and without knots. A knot ratio (KR) was defined analysing the knots layout of each wooden pile, and evaluating how the compressive strength was influenced by size, number and layout of knots. As final step, a prediction model was implemented based on the dry density and KR of wooden piles, to estimate the influence of knots on their compressive strength.

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ER -

Pagella G , Mirra M , Ravenshorst GJP , Van De Kuilen JWG. Influence of knots and density distribution on compressive strength of wooden foundation piles. In Zingoni A, editor, Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022. CRC Press / Balkema - Taylor & Francis Group. 2023. p. 1689-1695 doi: 10.1201/9781003348443-277

Influence of knots and density distribution on compressive strength of wooden foundation piles

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