The Golden Gate Bridge, also known as the "golden gate channel bridge", is a cross sea channel connecting San Francisco Downtown and Marin County in the north in the United States. Located on the golden gate channel, it is the main symbol of San Francisco in the United States.
The Golden Gate Bridge starts from California in the north, crosses the Golden Gate Strait on the north, and ends at San Francisco Peninsula in the south; The total length of the line is 2780m, and the total length of the main bridge is 1967.3m; The bridge deck is a two-way six lane urban trunk line with a design speed of 60 km / h; The total cost of the project is about 35.5 million US dollars, and the design engineer is Joseph Strauss.
Joseph Strauss is an engineer from Chicago. He designed and built more than 400 bridges and participated in the design and construction of the Golden Gate Bridge. To commemorate his achievements, the San Francisco Golden Gate Bridge Management Committee set up a statue on the south side of the Golden Gate Bridge to let tourists and citizens know about the engineer's contributions. As of may2012 (the 75th anniversary of the Golden Gate Bridge), the new visitor center on the southeast side of the Golden Gate Bridge was open to the public. The visitor center covers an area of about 300 square meters. It is a "green" building. It is also the Golden Gate Bridge history museum. People can understand the history, engineering principles and construction process of the bridge through multimedia displays such as cultural relics, pictures, models, and videos.
The viaduct of Golden Gate bridge adopts the arch bridge design scheme, while the main bridge adopts the double tower suspension bridge design scheme, and the bridge body is painted orange. The main beam is orthotropic steel deck. The bridge tower is provided with four cross beams. The overall structure is a grid type multi chamber steel tower. The cross section is composed of closed sections, which form a significant rib line on the surface. The width is reduced by three steps of shrinkage. The height of each stage and the height of the crossbeam change from bottom to top. The cable is a steel cable system in the shape of a half circle arc, which is composed of multiple steel wires; Two cables are fixed with multiple slings.
Golden Gate Bridge is an outstanding representative of suspension bridge industry. It not only plays a leading role in large suspension bridge projects, but also a benchmark for the construction and operation management of all large projects.
