What is the railway bridge?
The railway bridge is a structure designed to transport freight and passenger trains through an obstacle in the landscape. These bridges represent complicated performance of engineering and design and often require the cooperation of the team of engineers and builders. While many railway bridges are designed so that cross -water formations cover valleys, canyons or other obstacles that once prevented railway travel in this area. The railway bridge often has a big impact on travel, allowing shorter trips and faster delivery of freight transport, as the train no longer has to run a longer route after the obstacle. As the popularity of train travel decreased, railway bridges are often preserved or reconfigured for other uses, such as hiking or cycling trails.
19 and the beginning of the 20th century represented the golden age of rail travel in the United States (USA). During this time, people had few opportunities to travel outside the railway, so the railway bridge was important during this PE. The first bridges werebuilt of wood and stone, while later models were built of casting or forged iron. The introduction of steel allowed the railway bridges to bridge large distances and cross areas that were once considered impossible. Advances in welding technology have also helped engineers to develop larger and better designs of railway bridges.
The basic railway bridge consists of a simple beam or beam and is designed to exceed the short span such as a small stream. The addition of triangular trusses allowed longer and stronger railway bridges. Rail engineers also used the natural force of the arch to design bridges with an arc -shaped support. Scepted bridges rely on high -voltage cables for support, allowing them to bridge even more distances than earlier bridge designs. The most advanced units represented things such as the construction of doubles, cIt allows a railway vehicle to share the same bridge as vehicles or pedestrians.
The railway bridge must be equipped to handle the extreme load of the train and its cargo, as well as other forces generated by the train speed. These bridges should also be able to withstand extreme wind and weather. When crossing the water body, the bridge supports must be successfully placed underwater, often at high depths. The unstable areas also represent a challenge for railway bridge engineers.
Because rail travel is replaced by other forms of travel, railway bridges continue to play an important role in society. Many of them are celebrated for their beauty or structure, while others are acceptable by historical preservative groups. In the USA, especially popular "Rails to Trails" programs. As part of these programs, the communities of old railway routes and bridges transform the picturesque paths for recreation and hiking.