Experimental investigation on dynamic properties of steel reinforced concrete subjected to shock loading
The dynamic compress experiments on steel reinforced concrete are conducted by one-stage light gas gun. The stress-time curves are recorded by the manganin pressure transducers embedded in the target beforehand. The Lagrangian analytical method is used to process the experimental data and the strain-stress curves of reinforced concrete are obtained, from which the distributions law of the mechanical parameters in the flow filed is obtained. Based on the dynamic properties of reinforced concrete and mesomechanics theory used in composite materials, it is assumed that the constitutive relationship of reinforced concrete can be determined by the product of viscoelasticity constitutive relationship of concrete and a constant G determined by the reinforcing capability of steel. It is also assumed that damage occurs only in concrete and the introduction of steel not only reinforces the concrete but also contributes to the initial damage of concrete. Based on the assumptions, a dynamic damaging constitutive model of reinforced concrete is established, of which numerical results agree reasonably well with the experimental data.
Jing-han Lu Jian-guo Ning
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology,Beijing 100081, China
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
798-803
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）