- Volume 34 Issue 3
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Incremental Model Formulation of Creep under Time-varying Stress History
시간이력 하중을 받는 콘크리트의 점증적 크리프 모델
- Park, Yeong-Seong (Konkuk University) ;
- Shin, Dong-Hun (Konkuk University) ;
- Lee, Yong-Hak (Konkuk University)
- Received : 2013.09.24
- Accepted : 2014.04.01
- Published : 2014.06.01
Internal or external restraint of concrete strain due to drying shrinkage and creep in concrete structures causes mechanical strain and becomes a source of persistent change in creep-causing stress conditions. Mathematical modeling to incorporate the persistent change of creep-inducing stress is generally achieved with consideration of the ages of concrete and concrete properties at the times of loadings, and stress history. This paper presents an incremental format of creep model based on parallel creep concept to depict the creep under time-varying stress history in developing creep strain. Laboratory experiments are carried out to validate the performance of the presented creep model. Typical creep phenomena are addressed through the comparisons between the measured and predicted creep strains.
Supported by : 국토교통과학기술진흥원
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