Innovative Seismic Retrofitting of Bridge: A Perspective Study

In recent years shape memory alloys (SMA) have become an innovative material and are becoming increasingly popular due to their unique properties in the field of structural modification. Shape memory alloy (SMA) is a special type of alloy that provides a structure with intelligent self-centering characteristics that returns to its original position after large inelastic deformation. SMA goes through two stages at different temperatures: austenite is in the high temperature phase and martensite is in the low temperature phase.

Mark R. Capron conducted an earthquake evaluation by pushing over a bridge of length 2,164 meters near the New Madrid earthquake zone in the southeastern state of Missouri. His research includes an existing structure, an improved substructure of the column jacket, a cap beam correction, and an isolation mount. Studies have shown that the existing structure occupies 30% to 40% of the displacement required for the 500-year design level and is significantly lower than 1000 and 2500 years. Cross performance

The bridge between Golden Gate Bride, Richmond - San Rafael Bridge, Bay Bridge, San Mateo - Hayward Bridge, Dumbarton Bridge - was recently remodeled to maintain strong seismic activity. The Metropolitan Transportation Committee (MTC) announced a detailed report on the plan at the end of 2016. BART Transbay Tube has also undergone earthquake rebuilding. These decisions by municipal agencies are excellent measures to protect infrastructure across national borders due to future seismic activity and corrosive damage caused by sea level rise, but the intersection of bridges, the coastal roads on the ground and the ground The railway is still flooded The climate related risk of liquefaction damage

The earthquake changed the landscape of the car transport in the Bay Area. In addition to the repair of all the bridge earthquakes in the San Francisco Bay Area, they caused sufficient damage to some parts of the highway system that must be removed. Damage to the transportation system in this area is estimated at $ 1.8 billion. San Francisco - Oakland Bay Bridge, Interstate 80: Bay Bridge has been restored and restarted within a month. However, as with many toll bridges in California, the earthquake clearly shows that it is necessary to review or exchange Bay Bridge for long-term viability and safety. The exchange of East Span started on January 29, 2002. The project was completed on 2 September 2013.