Study on the shear behaviour of steel-concrete composite beams after elevated temperature and water cooling

Liu, Shuo; Wu, Fangwen; Zheng, Wenzhong; He, Lanqing

doi:10.1007/s43452-024-00927-4

Artykuł - szczegóły

Tytuł artykułu

Study on the shear behaviour of steel-concrete composite beams after elevated temperature and water cooling

Autorzy

Liu Shuo , Wu Fangwen , Zheng Wenzhong , He Lanqing

Wybrane pełne teksty z tego czasopisma

http://www.springer.com/journal/43452

Identyfikatory

DOI

10.1007/s43452-024-00927-4

Warianty tytułu

Języki publikacji

Abstrakty

The study of the mechanical behaviour of steel-concrete composite beams under fire is of great importance. However, little attention has been paid to the effect of elevated temperatures on the shear performance of composite beams. This study innovatively investigates the shear behaviour of steel-normal concrete (NC) composite beams and steel-engineered cementitious composite (ECC) composite beams after elevated temperatures and water cooling. The experimental results show that the degradation of the mechanical properties of concrete was more severe than steel after experiencing 200 ℃ and 400 ℃. This deteriorates the synergistic working properties of the concrete slab and steel beam, and the shear strength of steel beam was not fully utilised. PVA fibres have completely melted under 400 ℃, and the shear performance of steel-ECC composite beam, particularly the ductility and energy absorption, was found to be significantly reduced. The reductions in the shear capacity, ductility, energy absorption, and initial stiffness after 400 ℃ were 12.6%, 23.8%, 31.3%, and 10.2% for the steel-NC composite beam respectively, and 25.7%, 52.8%, 64.3%, and 30.2% for the steel-ECC composite beam respectively. Furthermore, the prediction equation for the residual shear capacity of the composite beams after elevated temperatures and water cooling was established and validated.

Słowa kluczowe

composite beam shear behaviour engineered cementitious composite ECC elevated temperature water cooling

belka kompozytowa kompozyt cementowy ECC temperatura podwyższona chłodzenie wodne

Wydawca

Springer
Wrocław University of Science and Technology

Czasopismo

Archives of Civil and Mechanical Engineering

Rocznik

2024

Tom

Vol. 24, no. 2

Strony

art. no. e126, 2024

Opis fizyczny

Bibliogr. 41 poz., rys., tab., wykr.

Twórcy

autor

Liu Shuo

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

autor

Wu Fangwen

wufangwen@chd.edu.cn

School of Highway, Chang’an University, Xi’an 710064, China

autor

Zheng Wenzhong

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China

autor

He Lanqing

School of Highway, Chang’an University, Xi’an 710064, China

Bibliografia

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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).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-30553e44-5269-48d4-bcef-bf78792eada4