Numerical Simulation and Test Validation for Concreted Filled Steel Tube Columns Under Blast Loading

ZHAO Junhai; SUN Shanshan; DANG Huixue; LI Xinzhong

doi:10.21656/1000-0887.400207

Volume 41 Issue 9

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ZHAO Junhai, SUN Shanshan, DANG Huixue, LI Xinzhong. Numerical Simulation and Test Validation for Concreted Filled Steel Tube Columns Under Blast Loading[J]. Applied Mathematics and Mechanics, 2020, 41(9): 943-955. doi: 10.21656/1000-0887.400207

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Numerical Simulation and Test Validation for Concreted Filled Steel Tube Columns Under Blast Loading

doi: 10.21656/1000-0887.400207

School of Civil Engineering, Chang’an University, Xi’an 710061, P.R.China

Funds: The National Natural Science Foundation of China（51878056）

Received Date: 2019-07-10
Rev Recd Date: 2019-12-12
Publish Date: 2020-09-01

Abstract

Abstract

Based on the LS-DYNA nonlinear finite element program and multi-material fluid-solid coupling method, the finite element model was developed to analyze dynamic responses and damage mechanisms of concreted filled steel tube (CFST) columns under blast loading, which were validated through comparison between simulated results and tested ones of the full-scale specimens. The effects of main parameters including the section form, the scale distance, the concrete strength, the steel strength and the section shape characteristics on the blast-resistant performance of the CFST columns were investigated with the finite element model. The results indicate that, the CFST columns have excellent anti-blast performances, and the proposed finite element model predicts the dynamic responses of the CFST columns under blast loading efficiently; the anti-blast performance of circular CFST columns is better than that of square ones; increasing the material strength and the length-width ratio of a rectangular CFST column can improve the blast-resistant performance, and decreasing the radius-thickness ratio of a circular CFST column also can promote that resistance.
- structural engineering,
- concrete-filled steel tube column,
- blast loading,
- dynamic response

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References(17)

References

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