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An RHT-Model-Based Equivalent Parameter Scheme for Blast Response Simulation of RC Frames

Ziqi Tang

School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, P. R. China

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Shanglin Yang

School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, P. R. China

E-mail Address: 201620105209@mail.scut.edu.cn

Corresponding author.

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Run Zhang

School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, P. R. China

E-mail Address: zhangrun@scut.edu.cn

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, and

Xiaohu Yao

School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, P. R. China

E-mail Address: yaoxh@scut.edu.cn

Corresponding author.

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https://doi.org/10.1142/S0219455422500109Cited by:10 (Source: Crossref)

Abstract

In this paper, a novel equivalent parameter scheme based on the Riedel–Hiermaier–Thoma (RHT) model is proposed for blast response simulations of reinforced concrete (RC) frames. Considering the strengthening effect of longitudinal and stirrup reinforcements on concretes, constitutive parameters in the RHT model are modified to homogenize RC components based on reasonable simplifications and numerical tests. Numerical results of RC beams illustrate that this scheme significantly improves the computational efficiency and effectively predicts real explosion response behaviors with high accuracy. The scheme is then employed for the blast simulation of an RC frame with multiple components with results compared with those of real frame experiments to further demonstrate its reliability. Owing to its efficiency and accuracy, the present RHT-model-based equivalent parameter scheme can serve as a feasible tool to conduct blast response analysis of the RC frame and guide the corresponding anti-explosion designs.

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