Orthogonal Test Analysis on Influencing Factors of Prestressed Concrete Small Box Beam Camber

Abstract:

Focused on the problems of prefabricated prestressed concrete small box beams cambering at mid-span, FEM theory and orthogonal test method are applied to analyze the sensitivity of factors involving elastic modulus of concrete (E), effective prestressed force (P), environmental relative humidity (RH), beam-preserving time (T) etc, and approximate expressions for calculating camber of the prestressed concrete small box beam are obtained by stepwise regression method. The fitting precision can meet the requirements of the engineering design, and the study method can provide reference for prediction and control of main beam camber.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 1527-1530
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.1527
• Online since: September 2013
• Authors: Yue Zhang
• Keywords: Camber, Influencing Factor, Orthogonal Test, Regression Analysis, Restressed Concrete (PC), Small Box Beam

References

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