Effects of restrained thermal strains in transversal direction of concrete slab frame bridges
2013 (English)Report (Other academic)
In the last few years the usage of 3D finite element analyses has increased substantially in the bridge design community. Such analyses provide the possibility for a more accurate study of the structure than what is possible by using more traditional design tools. However, in order to use the full strength of the finite element method in daily design practice a number of critical issues have to be addressed. These issues are related either to the FE-modelling itself (geometry, support conditions, mesh density, etc.) or to the post processing of the obtained results (stress concentrations, choice of critical sections, distribution widths and so on). In the latter category, one problem of special significance refers to concrete structures subjected to restrained forces caused by temperature loading or shrinkage.
In this context, the present report addresses the problem of crack width control in transversal direction for concrete slab frame bridges subjected to restrained thermal or shrinkage loading. The recommendations given herein are based not only on the existing literature but also on the authors own investigations using non-linear finite element analyses.
The authors want to express their gratitude to the members of the reference group. Their comments and suggestions have been invaluable in shaping the report.
This report is a part of a larger research project entitled “Recommendations for finite element analysis of structures whose coordinators are Costin Pacoste and Mario Plos. The work has been financially supported by Trafikverket and also ELU Konsult. This support is gratefully acknowledged.
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. , 47 p.
, TRITA-BKN Rapport, ISSN 1103-4289 ; 149
Engineering and Technology Civil Engineering
IdentifiersURN: urn:nbn:se:kth:diva-145745ISRN: KTH/BKN/R-149-SEOAI: oai:DiVA.org:kth-145745DiVA: diva2:720302
QC 201406032014-05-282014-05-282014-06-03Bibliographically approved