Axial compressive behavior of FRP‑confined laminated timber columns

• Autorzy: Wang Libin , Shi Feng , Zhao Min , Wang Brad Jianhe , Li Hao , Zou Xingxing , Du Hao

Identyfikatory

DOI

10.1007/s43452-023-00827-z

• Języki publikacji: EN

Abstrakty

EN

Glued-laminated timber (GLT) and cross-laminated timber (CLT) have shown great potential in the field of sustainable structures (i.e., beams, slabs and floors). However, GLT and CLT columns are mostly considered as medium–low grade construction materials with a worse structural integral than timber columns. It is crucial to improve the performance of existing timber members to make the structures more acceptable for engineering applications. This study investigated the axial compressive behavior of GLT and CLT columns confined with fiber-reinforced polymer (FRP) sheets. To compare the mechanical properties of this composite structure, twenty groups of laminated Canadian hemlock column specimens were prepared using different FRP types and layer numbers, and two height dimensions were adopted for those columns to evaluate the scale effect. The failure modes of laminated timber columns were significantly influenced by the confinement of FRP, including timber crushing failures, FRP cracking failures and longitudinal buckling failures. According to the load– displacement curves, the load carrying capacity of FRP-confined laminated timber columns were improved by 6.35–36.19% compared with the unconfined specimens. Moreover, the FRP layers could prolong the plastic post-peak failure process. Inspired by confined concrete structures, three analytical predictive equations were derived for ultimate compressive strength.

Słowa kluczowe

EN

cross laminated timber; glued laminated timber; fiber-reinforced polymer; confinement; axial compression

PL

drewno klejone krzyżowo; drewno klejone warstwowo; ściskanie osiowe; polimer wzmocniony włóknami

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2024
• Tom: Vol. 24, no. 1
• Strony: art. no. e28, 2024
• Opis fizyczny: Bibliogr. 45 poz., fot., wykr.

Twórcy

autor

Wang Libin

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

• https://orcid.org/0000-0002-5555-2676

autor

Shi Feng

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

• https://orcid.org/0000-0001-7449-2675

autor

Zhao Min

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

• https://orcid.org/0000-0001-5695-8590

autor

Wang Brad Jianhe

• College of Material Science and Engineering, Southwest Forestry University, Kunming 650224, China
• Ningbo Sino-Canada Low-Carbon Technology Research Institute, Ninghai 315600, China

autor

Li Hao

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

autor

Zou Xingxing

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

autor

Du Hao

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)