Steel and Composite Structures

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Numerical study on the impact response of SC walls under elevated temperatures

  • Lin Wang (Beihang School, Beihang University) ;
  • Weiyi Zhao (Department of Civil Engineering, Qingdao University of Technology) ;
  • Caiwei Liu (Department of Civil Engineering, Qingdao University of Technology) ;
  • Qinghong Pang (Department of Civil Engineering, Qingdao University of Technology)
  • Received : 2021.07.24
  • Accepted : 2023.01.24
  • Published : 2023.02.10
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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.

Keywords

Acknowledgement

This work was supported by National Natural Science Foundation of China (Grant Number 52008219). The supports are gratefully acknowledged.

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