科研之友
微信
新浪微博
Facebook
分享链接
摘要
In view of the fact that the creep degree of concrete commonly used in mass concrete engineering is actually a visco-elastic model which considers concrete age under load, and it is inconsistent with the reality because the thermal stress calculated by visco-elastic model is bigger under big temperature load, the elastic creep formula was promoted to elasto-plastic creep formula. It was proposed that the plastic creep should be considered through linking a Bingham series whose strengthen parameter and viscosity factor increase as the concrete age increases on the basis of elastic creep model. An elastio-plastic creep formula with implicit and explicit arithmetics was deduced. and relative programs were developed based on this formula. The analysis of engineering examples showed that the elastio-plastic creep formula is feasible, and the values calculated by it are more reasonable than that of elastic creep one.
- 出版日期2011
- 单位三峡大学
