Mesoscale modeling of size effect of BFRP‑reinforced concrete columns under pure torsion

• Autorzy: Jin Liu , Zhu Huajie , Lei Yushuang , Du Xiuli

Identyfikatory

DOI

10.1007/s43452-023-00833-1

• Języki publikacji: EN

Abstrakty

EN

There have been few studies regarding the torsional behavior of FRP-reinforced concrete members. Only the CSA S806-12 and the ACI 440.11-22 codes specify the design criteria for their pure torsional capacities. A meso-scale numerical model of circular/square concrete columns with BFRP bars was developed, in which concrete heterogeneity can be explicitly described. This study evaluated longitudinal reinforcement ratios, stirrup ratios, cross-section shape, and structural size for their effects on BFRP-reinforced concrete column torsional performance. For BFRP-reinforced concrete columns, the nominal torsional strength exhibits a significant size effect, while the longitudinal reinforcement and stirrups ratio cannot suppress the size effect. Furthermore, a modified size effect law was developed to quantitatively reflect the relationship between nominal torsional strength and structural size. BFRP-reinforced concrete columns present a more substantial size effect than steel-reinforced ones. Finally, a modified calculation formula of pure torsional capacity was proposed considering the effect of structural size.

Słowa kluczowe

EN

BFRP reinforced concrete columns; pure torsional failure; size effect; torsional strength; modified calculation formula; meso-scale simulation

PL

kolumna żelbetowa; wytrzymałość na skręcanie; wzór obliczeniowy

• 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. e30, 2024
• Opis fizyczny: Bibliogr. 57 poz., rys., tab., wykr.

Twórcy

autor

Jin Liu

• The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing 100124, China

autor

Zhu Huajie

• The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing 100124, China

autor

Lei Yushuang

• The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing 100124, China

autor

Du Xiuli

• The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing 100124, 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)