<abstract xmlns="http://www.w3.org/1999/xhtml"><p>This paper studies restraint moments developing in simple-span precast, prestressed beams made continuous. Methods of evaluating restraint moments produced by creep and differential shrinkage are presented. Shrinkage and creep properties of composite structures, beam and deck parts were tested and compared to values defined according to Eurocode models. Finally, the restraint moments were calculated with both material models for the two-span parking deck structure. The study confirmed the findings of previous studies: that the methods that are used overestimate the negative restraint moment produced by differential shrinkage.</p></abstract>

This paper studies restraint moments developing in simple-span precast, prestressed beams made continuous. Methods of evaluating restraint moments produced by creep and differential shrinkage are presented. Shrinkage and creep properties of composite structures, beam and deck parts were tested and compared to values defined according to Eurocode models. Finally, the restraint moments were calculated with both material models for the two-span parking deck structure. The study confirmed the findings of previous studies: that the methods that are used overestimate the negative restraint moment produced by differential shrinkage.

Prediction of Restraint Moments in Precast, Prestressed Structures Made Continuous

Nordic Concrete Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

This paper studies restraint moments developing in simple-span precast, prestressed beams made continuous. Methods of evaluating restraint moments produced by...

Prediction of Restraint Moments in Precast, Prestressed Structures Made Continuous

Published Online: Dec 31, 2018

Page range: 73 - 93

Received: Sep 14, 2018

Accepted: Nov 29, 2018

DOI: https://doi.org/10.2478/ncr-2018-0016

Keywords
Restraint moment, creep, differential shrinkage, continuity, prestressed concrete

© 2018 Ulla Kytölä et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Prediction of Restraint Moments in Precast, Prestressed Structures Made Continuous

Published Online: Dec 31, 2018

Page range: 73 - 93

Received: Sep 14, 2018

Accepted: Nov 29, 2018

DOI: https://doi.org/10.2478/ncr-2018-0016

KeywordsRestraint moment, creep, differential shrinkage, continuity, prestressed concrete

© 2018 Ulla Kytölä et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Restraint moment, creep, differential shrinkage, continuity, prestressed concrete