Self-Supporting Form for the Production of Prestressed Concrete Prefabricates

Abstract:

We are going to present in this article an actual problem in the production of prestressed concrete prefabricated elements. There is a problem of high transport costs in the case of bridges, that are made from prefabricates. In the production of T type or double T type cross section we can have a situation that the form could be more than 100 m long and prestressing force is self-fixed. Putting the polystyrene in the form we can produce 10 or more beams in one step. From a viewpoint of theoretical background this steel form represents a problem of stability and friction. A special steel assembled frame for the production of prestressed prefabricates could be arranged close to the bridge site. Horizontal deformations represent a special problem. Friction effect is introduced as the simplification of elastic support. Non-linear solution has been used.

• Periodical: Applied Mechanics and Materials (Volume 837)
• Pages: 113-120
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.837.113
• Online since: June 2016
• Authors: Lubos Snirc*, Monika Nagyova, Jan Ravinger
• Keywords: Buckling, Friction, Geometric Nonlinear Theory, Imperfection, Prestress, Stability

References

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DOI: 10.1016/0263-8231(94)90002-7

[4] J. Ravinger, Vibration of an Imperfect Thin-walled Panel, Part 2: Numerical Results and Experiment, Thin-Walled Structures Vol. 19, No 1 (1994) 23-36.

DOI: 10.1016/0263-8231(94)90003-5