Investigate the Structural Response of Ultra High Performance Concrete Column under the High Explosion

Defence science journal

article

Viet-Chinh Mai¹  Xuan-Bach Luu¹  Cong-Binh Dao²  Dinh-Viet Le³ 

[1] Department of Civil Engineering, Kumoh National Institute of Technology;Institute of Techniques for Special Engineering, Le Quy Don Technical University;Department of Civil Environmental and Railroad Engineering, PaiChai University

关键词: Explosion;    Numerical Model;    Johnson-Holmquist 2 model;    Column;    Ultra high performance concrete;    Failure;   

DOI  :  10.14429/dsj.71.16427

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

Most of the structures that are damaged by an explosion are not initially designed to resist this kind of load. In the overall structure of any building, columns play an important role to prevent the collapse of frame structure under blast impact. Hence, the main concept in the blast resistance design of the building is to strengthen the blast loading capacity of the column. In the present study, the dynamic analysis and numerical model of Ultra High Performance Concrete (UHPC) column under high explosive load, is presented. Based on the Johnson Holmquist 2 damage model and the subroutine in the ABAQUS platform, a total of twenty numerical models of the UHPC column were calculated. The objective of the article is to investigate the structural response of the UHPC column and locate the most vulnerable scenarios to propose necessary recommendations for the UHPC column in the blast resistance design. The input parameters, including the effect of various shapes of cross-section, scaled distance, steel reinforcement ratio, and cross-section area, are analysed to have a better understanding of the UHPC column subjected to the blast load. Based on the results of this study, the UHPC circular column was demonstrated to achieve great blast resistance capacity. Details of the numerical data, and the discussion on the important results, are also provided in this paper.

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