How is the foundation of a bridge built?

How is the bridge built? How is the bridge found and designed? In flooded areas, how do people build bridge foundations - the foundation of all buildings? Are you curious to know how people can build the bridge foundation, while the water is still flooding around? Try to find out.

Foundation - the most important part of every building

The foundation is a construction structure located at the bottom of any construction site, whether it is a level 4 house or a 100-storey building.

This is the foundation of every building, because it has the function of directly carrying all loads into the ground. It is no coincidence that my father had a sentence " Making a house from a nail ". The foundation is strong, the new house is stable, so it can be considered as the most important part of every project.

As for demand, there is also a need for a nail. The bridge foundations are made of reinforced concrete, also effective in transmitting and distributing the entire load to the ground so that the bridge can stand firm, despite having a lot of vehicles circulating on the bridge.

To build the foundation, experts need to examine the geology carefully. The ground should ensure that there is no subsidence before digging piles, and testing must be done to determine the subsidence process .

But how to build a foundation over the north bridge?

The digging of pits and piling to build the foundation with the bridge on the mainland is nothing worth mentioning. But when the bridge crosses the river, even across the sea, how do people build bridge foundations? The answer is right in the following picture.

That's right - they use a crank system to prevent water from entering during the excavation process. For shallow water areas, the ground inside the scaffold can be pushed up, from which the abutment will be built.

For bridges across the river, deep pools . the foundation will be closed from above. First, engineers have to build cofferdam - a domestic wall system, the pump has a continuous operation to bring water out, to ensure working conditions are always dry. Nails will be built inside the dike.

A typical crank

The rig can be installed to build bridge piers.

For superpowers through deep waters, they use a more complex system, but theoretically still create a dry environment for foundation construction.

After the foundation is successfully placed, the concrete will be poured to cast the abutments . Then, the spheres will be installed on those piers. The process of building a bridge can be described briefly in the following video.

And below will be some beautiful bridges and roads in the world.

Millau Viaduct - France

Golden Gate Bridge - America

London Tower Bridge (England)

Puente del Alamillo Bridge of Spain

Ghenh Bridge is 223.30m long (along with Rach Cat Bridge, 125.37m long) in Bien Hoa City - 2 bridges crossing the Dong Nai River leading to Cu Lao Pho, reserved for both roads and railways with 2 The side is for 2-wheeled vehicles, in the middle for trains and cars.

There is a document that the bridge was built in 1909, and was designed by architect Gustave Eiffel (1832 - 1923, who designed the Eiffel Tower), along with two other architectural structures in Vietnam, Long Bridge. Bien (Hanoi) and Trang Tien Bridge (Hue).