Research on Key Construction Technology of Urban Expressway Viaduct Connection

With the increase of traffic pressure on main roads in central areas major cities, new high-speed elevated corridors have become a way to relieve urban congestion. However, for prosperous areas, cast-in-place piers and cap beams cannot be used well due long construction period harsh conditions. At this point, prefabricated cover can solve above problems. actual engineering abroad, especially Africa, there are also practical problems such as backward technology, shortage materials, limited local technical skills. Therefore, paper takes prefabrication connection technology scheme Nairobi Expressway Kenya an example study key viaduct connections Africa other similar projects.