The Detection Research of Tension about Vertical Prestressed Fine Rolled Twisted Bar in Box-Girders Construction of Civil Engineering

Abstract:

At present, vertical prestress detection is almost blank during box-girders construction of civil engineering . In order to effectively detect the effective tension at box-girder construction process in civil engineering based on the theory of structural dynamics, scene detection means, the relationship of box-girder vertical prestressing tensile force and dynamic characteristics of the exsertion segment reinforced was established. Vertical prestress of part of the box beam segments of a three-span prestressed concrete continuous rigid frame was detected , the shortcomings of the current vertical prestressing tensile force was analyzed . The results show that: the proposed method is direct, effective and able to effectively monitor the vertical prestressing tensile force. The research has important theoretical and engineering applications for crack prevention of box-girders.

• Periodical: Advanced Materials Research (Volume 568)
• Pages: 134-137
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.568.134
• Online since: September 2012
• Authors: Xing Yuan Lin, Yan Feng Wu, Wei Wei Wang, Feng Zhang
• Keywords: Box Girder, Civil Engineering, Exsertion Segment, Finishing Rolling Rebar, Tensioning Force

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DOI: 10.1061/(asce)be.1943-5592.0000164