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Steel and Composite Structures
  Volume 46, Number 3, February10 2023 , pages 345-352
DOI: https://doi.org/10.12989/scs.2023.46.3.345
 


Numerical study on the impact response of SC walls under elevated temperatures
Lin Wang, Weiyi Zhao, Caiwei Liu and Qinghong Pang

 
Abstract
    A thermal-mechanical coupling finite element model of the steel-plate concrete composite (SC) wall is established, taking into account the strain rate effect and variation in mechanical and thermal properties under different temperatures. Verifications of the model against previous fire test and impact test results are carried out. The impact response of the SC wall under elevated temperatures is further investigated. The influences of the fire exposure time on the impact force and displacement histories are discussed. The results show that as the fire exposure time increases, the deflection increases and the impact resistance decreases. A formula is proposed to calculate the reduction of the allowable impact energy considering the fire exposure time.
 
Key Words
    elevated temperature; impact; steel-plate concrete composite wall; thermal-mechanical coupling analysis
 
Address
Lin Wang:Beihang School, Beihang University, Beijing 100191, China

Weiyi Zhao, Caiwei Liu and Qinghong Pang:Department of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China
 

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