What is a suspensory bridge?
The courage bridge is a type of bridge that is built by hanging a road from cables connected to the main cable, which leads above the bridge length. In addition to being strong and light, there are also beautiful bridges of hanging, and some of the most famous bridges in the world are also hanging bridges, including the iconic bridge Golden Gate Bridge in San Francisco and Brooklyn Bridge in New York. The design of the suspensory bridge is simple and simple and uses several techniques to safely distribute the weight of the bridge and evenly. Later, sidewalks were hung from the cables to make the process easier, and the original wine and ropes began to be replaced by chains. The main bridges were still built using truss design until 1808, when the American inventor named Jamesfinley handed the patent to the early version of the suspended bridge. Finley's design included stretching two strong chains on top of several towers and their anchoring on both sides of the bridge. Hung smaller chains from two main chains and used them to suspend the rigid deck andA modern incarnation of the suspensory bridge was born.
In 1830, French engineers realized that strongly woven cables were safer than chains and began to use them to build bridges. The hung bridges today use this cable design, but the basic form of the hanging bridge has remained the same, and engineers continue to push the span limits that the bridges can pass through. The longest suspension in the world since 2007 has been Akashi Kaiyo in Japan with an unsupported central span of 1.2 million (1,991 meters) and a total length of 2.4 million (3 911 meters).
The flush bridge begins with the construction of the tower. If possible, the towers are placed on dry soil and anchored to the subsoil. If the towers must be placed in water, a construction called Keesons are used to enforce water from the area of work to make a structure in a dry area. Once the towers are built and anchored, the main cables are over themThreaded and anchored on the points on dry soil, although some bridges are hung, which means that the main cables are truly anchored to the bridge deck itself. Then the suspension is written from the main cables and then a deck is connected to them.
The simple design of the hanging bridge allows high will under the deck, useful when the bridge is built on the main transport waterway or very deep abyss. The domestic bridge also has slender and clean lines, which are aesthetically attractive to many engineers and less subject to collapse than some other idge brys, such as types based on supportive rulers. The downtime bridge is also flexible, so it is more likely to survive earthquakes and extreme weather, although flexibility also causes it to be suitable only for vehicles and light rail: concentrated forward weight of heavy freight locomotive has too much energy for safe bridge.