Analysis of Effective Pre-Stress of Continuous Rigid Frame Bridge in Service Based on Inversion Theory

Zhao Ning Zhang; Ke Xing Li

doi:10.4028/www.scientific.net/AMR.671-674.1012

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 671-674Analysis of Effective Pre-Stress of Continuous...

Analysis of Effective Pre-Stress of Continuous Rigid Frame Bridge in Service Based on Inversion Theory

Abstract:

Due to the environment, climate, loads and other factors, the pre-stress applied to the beam is not a constant. It is important for engineers to track the state of the pre-stress in order to ensure security of the bridge in service. To solve the problem mentioned above, the paper puts forward a new way to analyze the effective pre-stress using the displacement inversion method based on the inversion theory according to the measured vertical deflection of the bridge in service at different time. The method is a feasible way to predict the effective pre-stress of the bridge in service. Lastly, taking the pre-stressed concrete continuous rigid frame bridge for example, the effective pre-stress is analyzed by establishing the finite element model.

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Periodical:

Advanced Materials Research (Volumes 671-674)

Pages:

1012-1015

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.671-674.1012

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Online since:

March 2013

Authors:

Zhao Ning Zhang, Ke Xing Li

Keywords:

Analysis, Deflection, Effective Pre-Stress, Inversion Theory, Rigid Frame Bridge

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