Safety Assessment of Slant Legged Rigid Frame Bridge Based on Field Testing

Abstract:

The safety and load-bearing capacity of an in-service urban reinforced concrete slant leg rigid frame bridge over railway is assessed by field testing and finite element analysis. The bridge is located in Qitaihe city, the northeastern of China. The two heavy trucks and three different loading test configurations are used in experiment. The three load figuration is set up and performed based on the result of technical condition investigation and finite element numerical analysis. The vertical displacement and key section strain response are recorded during experiment. Loading-bearing capacity and safety performance of the bridge is analyzed and evaluated according to measured data combining with numerical analysis. The testing result shows that structural stiffness and strength of the bridge do not satisfy the requirements of the original design. Based on the assessment result, some proposals are proposed to the management office. A moderate maintenance and reinforcement treatment should be carried out for this bridge to improve the bearing capacity and ensure safety operation. Before that completed some traffic control measures should be taken to avoid aggravating diseases and damages of the bridge due to passing heavy vehicle.

• Periodical: Key Engineering Materials (Volume 574)
• Pages: 163-175
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.574.163
• Online since: September 2013
• Authors: Yan Li, Hong Tao Bi, Bing Han Li, Yong Jun Wang
• Keywords: Calibration Coefficient, Loading-Bearing Capacity, Reinforced Concrete (RC), Rigid Girder Bridge, Static Load Test

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