SIMULATION ANALYSIS OF ROCKFALL IMPACT ON REINFORCED CONCRETE COLUMN BASED ON HOLMQUIST-JOHNSON-COOK MODEL
Rockfall disasters happen frequently in the western mountainous area,which seriously influences the safety of bridge structures.In order to investigate damage modes of the reinforced concrete column under the impact load of rockfall,a finite element model is established based on Holmquist-Johnson-Cook (HJC) damage constitutive model,and the energy principle is used to testify stability of the calculation results.Besides,a group of parameters,including impact height (h),impact velocity (v),elevation impact angle (α) and the rock diameter (d),is taken into consideration to research their effect on damage degree of the column.The calculation results indicate that the HJC constitutive model can simulate the behavior of concrete under impact load effectively and the damage mode and degree is mainly affected by impact kinetic energy.
Rockfall impact pier HJC simulation analysis damage mode impact kinetic energy
Hu Xu Lei Lv Zhong Zhibin Zhixiang Yu
The College of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, P.R.China The College of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, P.R.China; Key Labo
国际会议
The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)
武汉
英文
390-395
2012-11-17（万方平台首次上网日期，不代表论文的发表时间）