About the author:

1. CCCC （Guangzhou） Construction Co., Ltd., Guangzhou, Guangdong 511400, China;2. Guangdong Engineering Technology Research Center of Municipal Rail Transit Lean Construction, Guangzhou,Guangdong 510220,China; 3. China 19th Metallurgical Group Co., Ltd.,Chengdu, Sichuan 610031, China

Abstract:

In order to study the stress performance of steel reinforced recycled concrete columns underexplosion, this paper analyzes the shear force and mid span displacement characteristics of concretecolumns under different steel section thicknesses, steel content ratios, explosion loads, and slendernessratios through simulation calculations. The research results show that the thicker the steel section in theconcrete column, the stronger the anti explosion performance of the column, and the smaller the mid spandisplacement of the column during explosion. The higher the steel content of concrete columns, thesmaller the mid span displacement, the thicker the steel section, and the corresponding increase in steelcontent, resulting in stronger deformation resistance of concrete columns. The larger the explosion load,the greater the stress on the concrete column, and the greater the mid span displacement of the columnbody. When the explosion load is large, the steel section thickness of the concrete column should beincreased. When the slenderness ratio of the concrete column increases, the mid span displacement of theconcrete column increases, and the stability of the column body is poor, making it more susceptible todamage during the explosion process.