The Structure Of The Suspension Bridge

The construction method of suspension bridges was invented in the early 19th century, and many bridges use this construction method. Modern suspension bridges evolved from cable bridges. The scope of application is mainly large-span and super-span highway bridges. Today's large-span bridges all adopt this structure. It is the main form of long-span bridges.

Suspension bridge is a bridge with a cable or chain that bears tension as the main load-bearing component. It is composed of suspension cables, pylons, anchors, suspenders, bridge deck systems and other parts. The main load-bearing component of a suspension bridge is a suspension cable, which mainly bears tensile force, and is generally made of steel (steel wire, steel cable, etc.) with high tensile strength. Because the suspension bridge can make full use of the strength of the material, and has the characteristics of saving materials and light weight, the suspension bridge has the largest spanning ability among bridges of various systems, and the span can reach more than 1000 meters. The Akashi Strait Bridge in Japan, built in 1998, has a span of 1991 meters, making it the largest bridge in the world. The main disadvantage of the suspension bridge is its low rigidity, which is prone to large deflection and vibration under load. It is necessary to take corresponding measures.