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Analytical equations for interfacial stresses of composite beams due to shrinkage
Abstract Long term effects due to shrinkage may lead to deformations in steel-concrete composite members that are to be taken into account in the verification of the in-service condition. Simultaneously, tangential and normal stresses develop at the connection between concrete and steel and they can result in uplift effects, especially in end regions. In this paper, an analytical model is presented and closed-form solutions are derived in order to quantify deflections of composite members with partial interaction, as well as stresses and relative displacements at the connection. It is shown that deflections and tangential stresses/slips can be properly obtained if equal curvatures between the components of the composite member are assumed. Nevertheless, such a hypothesis must be abandoned in order to reproduce uplift effects at the interface and a new model is presented to derive the distribution of normal stresses.
Analytical equations for interfacial stresses of composite beams due to shrinkage
Abstract Long term effects due to shrinkage may lead to deformations in steel-concrete composite members that are to be taken into account in the verification of the in-service condition. Simultaneously, tangential and normal stresses develop at the connection between concrete and steel and they can result in uplift effects, especially in end regions. In this paper, an analytical model is presented and closed-form solutions are derived in order to quantify deflections of composite members with partial interaction, as well as stresses and relative displacements at the connection. It is shown that deflections and tangential stresses/slips can be properly obtained if equal curvatures between the components of the composite member are assumed. Nevertheless, such a hypothesis must be abandoned in order to reproduce uplift effects at the interface and a new model is presented to derive the distribution of normal stresses.
Analytical equations for interfacial stresses of composite beams due to shrinkage
Zanuy, Carlos (author)
International Journal of Steel Structures ; 15 ; 999-1010
2015-12-01
12 pages
Article (Journal)
Electronic Resource
English
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