Today the most advanced and economical systems of bridge constructions are cable-stayed bridges. Cable-stayed bridge consists of one or more pylons which are connected to the roadway with the stay cables. The spread of cable-stayed bridges was in 1950s and since then hundreds of cable-stayed bridges of different design had been built around the world. At present there are more than 100 cable-stayed bridges worldwide with the span longer than 300 m. One of the most important elements of the cable-stayed bridge construction is stay cable. Regardless of bridge design only two types of stay cable are used: cables of locked coil construction and cables with parallel wires and parallel strands. Lately constructions with parallel strands and parallel wires are mostly used as stay cables due to convenient installation and further maintenance and repair. According to relevant standards stay cables serve at least 100 years.
展开▼
