How are suspension bridges constructed?

Advanced and specialized methods are used in the construction of suspension bridges.

Suspension bridges are among the most fascinating and beautiful architectural structures that provide the ability to pass through natural areas and overcome obstacles. These bridges utilize advanced engineering methods and specialized design techniques that allow for crossing valleys and rivers without the use of heavy and solid structures. This article will explore the construction methods of suspension bridges and the technologies used in this field.

Construction Methods of Suspension Bridges

Advanced and specialized methods are used in the construction of suspension bridges. Below is an overview of the stages involved in building these types of bridges:

1. Preparation of the design: Engineers and architects first design and plan the bridge, including its location, dimensions, construction details, and materials.
2. Preparation of reinforced blocks: Reinforced concrete structures needed for the bridge are pre-fabricated and produced in advance.
3. Installation of girders: Girders and columns of the suspension bridge are installed on concrete foundations and connected to anchorages.
4. Installation of cables: Steel or fiber optic cables that support the weight of the bridge are lifted by the girders and installed at designated positions.
5. Installation of the main bridge section: Concrete or metal components for the main section of the suspension bridge are installed based on the precise measurements and positions as per the design.
6. Adjustment and final testing: After the installation of all bridge components, final adjustments are made, and necessary tests are conducted to ensure the strength and safety of the bridge.

Given the complexity and importance of these structures, the construction of suspension bridges requires precision, high-level technical knowledge, and engineering expertise to ensure the safety and stability of these structures over the long term.

Materials Required for the Construction of Suspension Bridges

Suspension bridges consist of two main parts: the upper part that is suspended over a river or valley, and the lower part that passes over the supports. Special materials are used in the construction of these bridges, which are discussed below:

1. Precast Concrete: In this method, concrete pieces are pre-fabricated, then transported to the site and interconnected. This method is commonly used for the main section of the bridge.
2. Metals: Steel, aluminum, and other metals are used for the metal sections of suspension bridges. This method is used to create lightweight and complex structures such as cables and girders of suspension bridges.
3. Cables: Steel or fiber optic cables are stretched from the bridge supports to the top of the bridge and bear the weight of the bridge. These cables are adjusted and monitored after the completion of the bridge.

Overall, the construction of suspension bridges requires precise engineering, accurate design, and the use of high-quality materials such as cement and concrete to withstand heavy loads and ensure the necessary safety and strength.

The Importance of Using Concrete Formwork in the Construction of Suspension Bridges

The use of concrete formwork in the construction of suspension bridges is one of the important and vital stages in the process of building these types of bridges. To view the types of concrete formwork used in bridge construction, click here.

Below are some explanations about the importance of using concrete formwork in the construction of suspension bridges:

1. Creating precise shape and dimensions: Concrete formwork is used as a one-time form for casting concrete in the exact dimensions and shapes required for the components of the suspension bridge. This ensures that the concrete components for the bridge are manufactured in precise dimensions and in harmony with the design.
2. Structural reinforcement: Concrete formwork is used as a temporary structure in the concrete casting process, ensuring that the concrete is poured into the formwork in the required shape, fully consolidated, and reinforced.
3. Creating a smooth and suitable surface: Concrete formwork results in a clean and smooth concrete surface, providing a suitable surface for installing and connecting bridge components. This contributes to the final quality and strength of the bridge.
4. Easier transportation and installation: Using concrete formwork allows the components of suspension bridges to be easily produced, transported, and installed.

In general, the use of concrete formwork in the construction of suspension bridges improves the quality and strength of the structure, creates a smooth and precise surface, and simplifies the production and installation process of bridge components.

The construction method of suspension bridges is used to create tall and complex structures that require high precision, technology, and technical knowledge. From the final installation of the bridge, testing and determination of strengths by relevant specialists are required. On the other hand, these types of bridges are also characterized by a strong and high-strength infrastructure. The use of concrete formwork in this process not only creates a smooth surface and precise dimensions but also improves the quality and strength of the structure, reduces energy loss, and enhances the construction and installation process of suspension bridge components.