A cable-stayed bridge, also known as diagonal bridge, is a structural system composed of a pressurized tower, strained cables, and a bent beam body where the main beam is directly pulled on the bridge tower with multiple cables.

The cable-stayed bridge consists of three primary components:

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

Features a larger main span, ideal for crossing wide rivers.

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

Increased flexibility requires careful engineering to manage structural deformation.

Enhances stability and reduces stress amplitude in long-span designs.

Cable towers are crucial structural and aesthetic elements with various configurations:

• Single column type (simple structure)
• A-shape configuration
• Inverted Y type (high stiffness)

Three primary configurations:

• Single cable plane (best torsional stiffness)
• Vertical double cable plane
• Oblique double cable plane (superior wind resistance)

Three fundamental types:

• Radial shape
• Harp shape
• Sector arrangement

• Compact beam dimensions with exceptional crossing capacity
• Minimal restrictions on bridge clearance and deck elevation
• Superior wind stability compared to suspension bridges
• No need for centralized anchorage structures
• Excellent long-span capabilities
• Ease of maintenance and accessibility

Cable-stayed bridges can be constructed using various techniques:

• Support construction method
• Push construction method
• Rotary construction method
• Cantilever construction method (assembly or pouring)

Two primary categories:

• Parallel wire cables with cold-cast anchors
• Parallel wire cables with clip anchors

Methods to reduce cable vibration:

• Pneumatic control (surface modifications)
• Damping vibration reduction (mechanical dampers)
• Dynamic characteristic modification (cable interconnections)