What are the advantages and disadvantages of a cable bridge?

What are the advantages and disadvantages of a cable bridge?

In most situations, the former will offer more strength to span a gap than the latter. The cable-stayed bridge can handle more pressure on a consistent basis compared to the suspension design, allowing the deck to have more resilience against wear and tear because there is greater rigidity in its construction.

How do cable stayed bridges fail?

The aerodynamic wind forces result in vibrations of the bridge deck and/or cables and can cause torsional divergence, flutter, galloping, and ultimately collapse [4,[8], [9], [10], [11]].

How long do cable stayed bridges last?

Cable-stayed bridges have the second-longest spanning capacity (after suspension bridges), and they are practically suitable for spans up to around 1000 m.

What are the pros and cons for suspension bridge?

Pros of a Suspension Bridge

• It can span over long distances.
• It is inexpensive to build.
• It is easy to maintain.
• It is incredibly versatile.
• It is aesthetically pleasing.
• It is vulnerable to the wind.
• It has load limitations.
• It costs time and money.

What is the biggest disadvantage of a suspension bridge?

List of the Disadvantages of Suspension Bridges

1. Suspension bridges can struggle to support focused heavy weights.
2. There is less flexibility with a suspension bridge.
3. High winds can cause a suspension bridge to start vibrating.
4. Some access below the deck may be necessary during construction.

What are the weakness of suspension bridge?

Disadvantages. Considerable stiffness or aerodynamic profiling may be required to prevent the bridge deck vibrating under high winds. The relatively low deck stiffness compared to other (non-suspension) types of bridges makes it more difficult to carry heavy rail traffic in which high concentrated live loads occur.

What forces act on a cable-stayed bridge?

The towers transfer the cable forces to the foundations through vertical compression. The tensile forces in the cables also put the deck into horizontal compression. A cable-stayed bridge, with forces of tension represented by red lines and forces of compression by green lines.

What makes a cable-stayed bridge strong?

In the cable-stayed bridge, the cables deliver all of the weight of the bridge to the towers, and therefore, the bridge doesn’t need to be anchored to the shores. The cable-stayed design uses less steel cable than a suspension bridge, and is faster and easier to build.

Where is the longest cable bridge in the world?

The world’s longest cable-stayed bridge is the 2,680m (main span) JiaShao Bridge spanning the Qiantang River at the mouth of Hangzhou Bay in China. The bridge forms part of the 69.5km Jiaxing-Shaoxing River-crossing Expressway and consists of eight traffic lanes.

Why are suspension bridges better?

When all the materials and circumstances are the same, suspension bridges can span longer distances than simple beam bridges. Suspension bridges are also less rigid, so they can better withstand outside forces, such as earthquakes.

What are the disadvantages of cable-stayed bridges?

Disadvantages of cable-stayed bridges. In the longer sizes, the cantilevered halves are very susceptible to wind induced oscillation during construction. The cables require careful treatment to protect them from corrosion.

What are the disadvantages of cables on a wooden deck?

This disadvantage occurs because of the rigidity that the cables provide for the overall structure. In regular situations, this would contribute to a higher level of durability. Under the pressure of a high-speed crosswind, the deck would start rocking.

How do suspension bridges support heavy weights?

Suspension bridges can struggle to support focused heavy weights. The goal of a suspension bridge is to continually transfer the tension and weight of traffic as it moves along the span. All of the cables work together to make this happen, but there is an upper weight tolerance that one must consider.

What is a cable-stayed cradle-system bridge?

“ Cable-stayed cradle-system Bridge ” is one of the newest variants. It has so called “cradle system” which carries the strands within the stays from bridge deck to bridge deck. These cables are continuous which means that this bridge has no anchorages in the pylons and its cables can be removed, inspected and replaced individually.