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Author:

Cong, Pengli (Cong, Pengli.) | Zhou, Hongyuan (Zhou, Hongyuan.) (Scholars:周宏元)

Indexed by:

EI Scopus SCIE

Abstract:

Due to the strain-rate effect of materials, the test results obtained from scaled-down models might not be accurately extrapolated to those of the full-scale prototypes. In the present study, this challenge is addressed by modifying the scaled distance so that the model exhibits identical scalable behavior to the prototype. The global and local responses of reinforced concrete (RC) structural members subjected to near-field blast loading are major indices to evaluate damage extent, which are dominated by multi-governing factors, rather than a single factor, due to the complexity of the constituent materials. Consequently, the scaling laws of global and local responses may be inconsistent with each other. In view of this, the scaling methods of the global and local responses of RC members are proposed based on the Buckingham theorem, and are validated with the test results of RC members such as slabs and beams subjected to near-field blast loading. It is shown that the model developed applying the suggested scaling methods is able to precisely predict the global and local responses of prototype. Then, a scaling method considering the strain-rate effect and size effect is proposed. Furthermore, the distortion of reinforcement ratio frequently encountered in model tests, as well as the influence of constitutive equations on scaling results, are investigated. The proposed scaling methods in this study provide reference for the design and application of model test in the blast-related field.

Keyword:

Model test Blast loading Dynamic response Scaling Reinforced concrete

Author Community:

  • [ 1 ] [Cong, Pengli]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Zhou, Hongyuan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Cong, Pengli]Softsoil Engn Earthquake Res Ctr, Tianjin Earthquake Agcy, Tianjin 300201, Peoples R China
  • [ 4 ] [Zhou, Hongyuan]Beijing Inst Technol, State Key Lab Explos Sci & Safety Protect, Beijing 100081, Peoples R China

Reprint Author's Address:

  • 周宏元

    [Zhou, Hongyuan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China;;[Zhou, Hongyuan]Beijing Inst Technol, State Key Lab Explos Sci & Safety Protect, Beijing 100081, Peoples R China

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Source :

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING

ISSN: 0734-743X

Year: 2025

Volume: 203

5 . 1 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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