FRP Jacketing for Seismic Retrofit of Bridge Columns on US-50

Brief

This article discusses the use of FRP jacketing for the seismic retrofit of bridge columns on US-50. FRP jackets offer several advantages over steel jackets, including lower cost, ease of installation, and corrosion resistance. The article also describes the design approach used for the FRP jackets on US-50, which was based on a performance-based approach.

 

Insight

jackets can be expensive and difficult to install. FRP jackets offer several advantages over steel jackets, including lower cost, ease of installation, and corrosion resistance.

The FRP jackets used for the seismic retrofit of bridge columns on US-50 were designed using a performance-based approach. This approach takes into account the specific requirements of the project, such as the seismic hazard and the desired performance level of the structure.

The FRP jackets were designed to provide the following benefits:

• Increased plastic hinge rotation capacity
• Increased shear strength
• Corrosion resistance

The FRP jackets were successfully installed on the bridge columns on US-50. The project has demonstrated that FRP jackets are an effective and cost-effective solution for the seismic retrofit of bridge columns.

Additional details:

• The FRP jackets were made of carbon fiber reinforced polymer (CFRP).
• The jackets were installed by wrapping the CFRP around the columns.
• The jackets were bonded to the columns using epoxy resin.
• The FRP jackets were designed to provide a minimum of 4% confinement pressure.
• The FRP jackets were designed to increase the plastic hinge rotation capacity of the columns by 200%.
• The FRP jackets were designed to increase the shear strength of the columns by 50%.

The use of FRP jackets for the seismic retrofit of bridge columns on US-50 is a success story. The FRP jackets were successfully installed and have demonstrated their effectiveness in improving the seismic performance of the bridge columns. The project has shown that FRP jackets are a viable and cost-effective alternative to steel jackets for the seismic retrofit of bridge columns

 

 

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