A cable-stayed bridge, also known as a diagonal bridge, features a structural system where the main beam is directly supported by multiple cables attached to bridge towers. This system consists of three primary components: a pressurized tower, tensioned cables, and a bent beam body.

• Main Beam: Typically constructed from concrete, steel-concrete combination, or steel structures
• Cable Tower: Primarily concrete structures, sometimes steel-concrete combination or steel
• Stay Cable: Manufactured from high-strength materials like steel wire or steel strand

Features larger main spans, ideal for crossing significant rivers.

Smaller main spans suitable for medium-sized rivers and urban channels.

Increased flexibility requires careful engineering to prevent excessive deformation.

Enhances structural stability and facilitates cantilever construction methods.

Cable towers serve as both structural supports and aesthetic elements, with various configurations available:

The main beam serves three critical functions: load distribution, structural integration, and resistance to lateral forces.

• Pneumatic control through surface modifications
• Damping vibration reduction devices
• Dynamic characteristic alteration via cable connections

Cable-stayed bridges can be constructed using various techniques including support construction, push construction, rotary construction, and cantilever methods (both assembly and pouring).

Cable-stayed bridges serve diverse purposes including highway and railway crossings, high-speed rail bridges, and other applications requiring aesthetic appeal combined with structural efficiency.

• Compact beam dimensions with exceptional crossing capacity
• Superior wind stability compared to suspension bridges
• No requirement for centralized anchorage structures
• Facilitates cantilever construction methods
• Reduced structural weight and temperature stress