Condition Assessment of Expansion Joint of a Cable-Stayed Bridge Based on Long-Term Monitoring

Xue Lian Li; Li Min Sun

doi:10.4028/www.scientific.net/AMM.204-208.2127

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Condition Assessment of Expansion Joint of a...

Condition Assessment of Expansion Joint of a Cable-Stayed Bridge Based on Long-Term Monitoring

Abstract:

Based on the long-term monitoring data of Donghai Bridge, span length changes of the main channel of the bridge was analyzed from the expansion joint displacement data monitored，and the correlation between the span changes and the environmental factors, which are temperature and wind load, was analyzed. Results show that temperature is the main factor influencing the span change, while the correlation between span changes and wind load is weak so can be ignored. The linear regression model established between span changes and the structure effective temperature can be used to estimate the interval of bridge span changes and examine the correctness of the expansion joint data monitored. Moreover, the regressive model of accumulated expansion joints displacement and time history can provide valuable information for design, maintenance and replacement of the expansion joints.

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Periodical:

Applied Mechanics and Materials (Volumes 204-208)

Pages:

2127-2134

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.204-208.2127

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Online since:

October 2012

Authors:

Xue Lian Li, Li Min Sun

Keywords:

Effective Temperature, Environment Effects, Expansion Joint Displacement, Span Change, Structure Health Monitoring

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