Презентация к проекту "Bridges"

Bridges

What is a bridge?

A bridge is a structure built

to span physical obstacles,

such as rivers, valleys, or roads,

for the purpose of providing passage over the obstacle.

History

History

The first bridges were made by nature itself.

The first bridges made by humans were probably spans of cut wooden logs and eventually stones.

World first bridges  

aren’t built they

are grown in India.

Nature's incredible engineering: some

of the bridges can

hold more than 50 people at a time. .

Types of bridges

Beam bridge

Truss bridge

Suspension bridge

Arch bridge

Cable-stayed bridge

Cantilever bridge

Tied arch bridge

Beam Bridges

are horizontal

beams

supported

at each end by

substructure

unites. They

are the simplest

and most

inexpensive

kind of bridges.

Arch bridge

• The arch bridge is used for heavy
• weight objects.

Arch bridge is one of the oldest one.

Truss Bridge

is a bridge

whose

load-bearing

structure

is composed

of a truss.

This truss is

a structure

of connected

elements

forming

triangular

units.

Cantilever Bridges

are built using cantilevers -horizontal beams supported on

only one end. They usually use a pair of spans.

Suspension Bridges

are suspended from cables. The earliest bridges were made of

ropes or vines. In modern bridges, the cables hang from towers.

Suspension bridges are far longer than any other kind of bridges.

Cable-Stayed Bridge

is a bridge design which uses large steel cables suspended

from high towers or pylons to support the bridge deckling.

The bridge of Immortals, Huanghsan, China

Bridges of Sighs in Oxford and in Venice

Bridge to Nowhere, New Zealand

The Storseisudent Bridge, Norway (The drunk bridge)

It looks as it is more a diving board than a bridge, but it is an optical illusion.

.

Even when you can see the whole bridge it still looks scary .

Types by use

• Car Traffic - Double-decked - Pipelines
• Pedestrian - Viaducts - Train bridge

The Banpo Fountain Bridge, South Korea

• It was opened in 2009. It is in the Guinness Book of World Records as the longest bridge fountain.

Millau Viaduct, France

• This bridge is in the Guinness Book of World Records for being the tallest bridge in the world.

Siduhe Bridge (The Si Du River Bridge)

It is the highest bridge in the world (472m). It was opened in 2009.

Danyang-Kunshan Grand Bridge, China

It is the world’s longest bridge. It is high-speed railway in

China (164,8 kilometers long)

Langkawi Sky Bridge, Malaysia

• It is a pedestrian bridge (2,300 ft above sea level).
• It gives tourists the opportunity to view some of the most beautiful sights of the Malaysian mountains and rainforests.

Helix Bridge, Singapore

• It was designed to look like the structure of DNA. It was opened in 2010.

Webb Bridge, Australia

It is a pedestrian/cycle bridge over the Yarra river, in Melbourne.

It was opened in 2007.

The Falkirk Wheel, Scotland

• It was opened in 2002. This is the world’s first and only boat lift!

Henderson Waves Bridge, Singapore

• The bridge was opened in 2004. It is the highest pedestrian bridge in Singapore.

Khaju Bridge, Iran

It was built by the Persian King, Shah Abbas II, in the 17th century.

Chengyang Bridge, China

• It was built in 1916 without a single nail.

Moses Bridge, Netherlands

• was built in the 17 th century.
• It was made invisible to its enemies.

Tower Bridge, England

• In the 19th century, London Bridge was the only way of crossing the Thames river.

Quiz

Question 1

Which type of bridge is the cheapest?

• Beam
• Arch
• Cable-stayed
• Suspension

Question 2

What is the tallest bridge in the world?

• Millau Viaduct, France
• Langkawi Sky Bridge, Malaysia
• The Si Du River Bridge

Identify these bridge types

• Suspension bridges
• Arch bridges
• Beam bridges
• Cable-stayed bridges

• Suspension bridges
• Arch bridges
• Beam bridges
• Cable-stayed bridges

• Suspension bridges
• Arch bridges
• Beam bridges
• Truss bridges

• Suspension bridges
• Arch bridges
• Beam bridges
• Cable-stayed bridges

• Suspension bridge
• Arch bridge
• Beam bridge
• Cable-stayed bridge

Thanks for your attention!

Somebody said:

A smile is the bridge

that put together two

souls