This contribution presents first results of comprehensive FE-studies on hardening-induced stress histories of very thick concrete members with compact dimensions. The motivation is to improve the understanding of their structural behaviour in order to provide an efficient but safe crack width control of such members. The strict application of current design rules would lead to very high reinforcement amounts, even though observations in practice indicate that serviceability can be ensured with much less reinforcement. Finally, the insights of these investigations will provide a basis on which efficient design rules can be developed for very thick concrete members. The FE-studies were conducted with a new constitutive law for hardening concrete whereby special regard was put on the influence of the member thickness, the ambient temperature as well as production conditions. In general, the results confirm the predominance of residual stresses or so called Eigenstresses in such structural elements, while restraint forces and restraint moments are of minor importance for usual subsoil conditions.
|Title of host publication||Proceedings of the International RILEM Conference Materials, Systems and Structures in Civil Engineering 2016|
|Subtitle of host publication||Segment on Service Life of Cement-Based Materials and Structures|
|Editors||Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad, Ole Mejlhede Jensen|
|Place of Publication||Lyngby, Denmark|
|Number of pages||10|
|Publication status||Published - 22 Aug 2016|
|Event||International RILEM Conference on Materials, Systems and Structures in Civil Engineering - DTU , Lyngby, Denmark|
Duration: 22 Aug 2016 → 24 Aug 2016
|Conference||International RILEM Conference on Materials, Systems and Structures in Civil Engineering|
|Period||22/08/16 → 24/08/16|
Fields of Expertise
- Sustainable Systems
Heinrich, P. J., & Schlicke, D. (2016). Hardening Induced Stresses in Very Thick Concrete Members - Insights from Comprehensive FE-Studies: insights from comprehensive FE-studies. In M. Azenha, I. Gabrijel, D. Schlicke, T. Kanstad, & O. Mejlhede Jensen (Eds.), Proceedings of the International RILEM Conference Materials, Systems and Structures in Civil Engineering 2016: Segment on Service Life of Cement-Based Materials and Structures (Vol. 1&2, pp. 249-258).  Lyngby, Denmark.