The Performance of Carbon Fiber in Decreasing the Strain Level of the PC-Longitudinal Bridge (PC-Plank Girder) under Service Load
DOI: 10.14416/j.ind.tech.2024.04.014
Keywords:
Bridge Load Test, Carbon Fiber Reinforced Polymer, StrengtheningAbstract
This research focuses on studying the effectiveness of carbon fiber reinforcement in increasing the strength of the floor structure of the bridge over the Canal Phrae Kluang, Samut Songkhram Province. Due to the prolonged use of the bridge, an inspection and evaluation of the load-bearing capacity of the bridge were conducted through quasi-static load tests. The results of the structural strength assessment were used in the design of structural reinforcement using Carbon Fiber Reinforced Polymers (CFRP). From the results of the reinforcement with the installation of two layers of CFRP, it was found that the reinforcement could reduce the levels of stress and deformation in the middle area of the bridge floor by 4.33% for stress and 3.68% for deformation. This demonstrates that CFRP reinforcement can help in reducing the levels of stress and deformation caused by increased load, and from the assessment of the moment capacity in the upper bridge structure using the LRFR method, both at the Inventory and Operation levels, it was found that after reinforcement with CFRP, the bridge can withstand an increased load capacity by 35%. This indicates that the bridge can still handle an increased load without experiencing failure and can be used safely.
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