Abstract
This study is to develop simplified reliability estimation for optimum strengthening ratio of T-beam railway bridge strengthened by CFRP strip. Until now, strengthening design has been usually proceeded to satisfy the target load-carrying capacity by using the deterministic parameter of nominal property for concrete or FRP. For the optimum strengthening design, however, it is required that reliability-based strengthening design should be applied to effectively determine the amount of strengthening material and make sure of the safety of the structure. As applying the reliability-based strengthening ratio, more reliable strengthening design using CFRP strip is possible as well as having a structural redundancy. The reliability-based strengthening design methodology suggested in this study is able to contribute the optimum strengthening design for a concrete structure strengthened by CFRP strip.
Highlights
FHWA 2009 [1] reported that many existing reinforced concrete bridges, especially superstructures, have consistently experienced deteriorations with significant loss of loadcarrying capacity
This study is to develop simplified reliability estimation for optimum strengthening ratio of T-beam railway bridge strengthened by CFRP strip
The goal of this study was to calculate the reliability-based strengthening ratio of the concrete beams strengthened by Near surface mounted (NSM) using CFRP strips by applying the reliability index for bridge design
Summary
FHWA 2009 [1] reported that many existing reinforced concrete bridges, especially superstructures, have consistently experienced deteriorations with significant loss of loadcarrying capacity. Near surface mounted (NSM) strengthening technique has many advantages for improving the structural capacity over a conventional ERB strengthening: less site installation work, better bonding and structural performance, and more effective maintenance point of view. For these reasons, many experimental researches have suggested that NSM-FRP strengthening is one of the most reliable strengthening techniques for concrete structures [3,4,5]. The goal of this study was to calculate the reliability-based strengthening ratio of the concrete beams strengthened by NSM using CFRP strips by applying the reliability index for bridge design. It is suggested that the strengthening procedure of the applied probabilistic and reliability approach is a reasonable strengthening design method
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
