Compressive performance of AFRP reinforced laminated bamboo stub columns

• Autorzy: Hong Chaokun , Li Haitao , Yang Dong , Li Hang , Zhang Huizhong , Lorenzo Rodolfo

Identyfikatory

DOI

10.1007/s43452-021-00354-9

• Języki publikacji: EN

Abstrakty

EN

Engineered bamboo construction can be affected by natural defects, insects, corrosion, etc., which will result in damaging the mechanical properties of structural components. However, traditional reinforcement methods such as setting steel supports and increasing the cross-sectional area of components may cost a lot and cause a negative influence on the appearance of building. Many engineering practices and research works show that applying FRP (Fiber Reinforced Polymer/Fiber) sheet is an economical and efficient method for reinforcing and retrofitting building structures. Therefore, the compressive performance of AFRP (Aramid Fiber Reinforced Polymer/Fiber) reinforced laminated bamboo lumber (LBL) stub columns was studied in this paper. Through six groups (three replicates for each group) of stub columns with six different cloth ratios, the influence of AFRP on the failure pattern and mechanical properties of bamboo columns was explored. The test results showed that AFRP could effectively restrain the lateral deformation and improve the mechanical behavior of LBL columns. With the increase in cloth ratio, the ultimate strength and elastic modulus increased linearly in general, while the Poisson’s ratio gradually decreased. The reduced modulus of reinforced columns in the elastoplastic stage increased up to 161.31% compared with normal columns. Although the ductility of LBL columns laterally wrapped by AFRP was greatly improved, the initial stiffness, yield point and turning points between elastoplastic stage and plastic stage basically remained unchanged in contrast to unreinforced columns. Based on the test results, an empirical equation considering the cloth ratio was proposed to calculate the ultimate strength of AFRP reinforced LBL columns, using ‘Lam and Teng’ model. In addition, a simplified equation was also proposed to calculate the compressive strength of reinforced LBL columns derived from Mises yield criterion. The results of this work can be a reference to promote the application of strengthening and retrofitting engineered bamboo structure with FRP.

Słowa kluczowe

EN

laminated bamboo; stub column; FRP; ultimate strength; reinforcement

PL

bambus; wytrzymałość; wzmocnienie

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2022
• Tom: Vol. 22, no. 1
• Strony: art. no. e31, 2022
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Hong Chaokun

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
• Joint International Research Laboratory of Bio-Composite Building Materials and Structures, Nanjing Forestry University, Nanjing 210037, China
• College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China

autor

Li Haitao

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
• Joint International Research Laboratory of Bio-Composite Building Materials and Structures, Nanjing Forestry University, Nanjing 210037, China

autor

Yang Dong

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
• Joint International Research Laboratory of Bio-Composite Building Materials and Structures, Nanjing Forestry University, Nanjing 210037, China

autor

Li Hang

• College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
• Joint International Research Laboratory of Bio-Composite Building Materials and Structures, Nanjing Forestry University, Nanjing 210037, China

autor

Zhang Huizhong

• College of Civil Engineering, Southeast University, Nanjing 210096, China

autor

Lorenzo Rodolfo

• University College London, London WC1E 6BT, UK

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)