This is the China Bridge!

When you walk on any road or railway in China

There is a high probability that you will encounter more than one bridge

They vary in length and shape.

The number is even greater

1,000,000 seats

Bridges

Outlining the footprints of China's development

From cable-stayed to cable-stayed, from crossing rivers to crossing seas

China's "Bridge Family"

With amazing speed and quality

Towards the forefront of the world

CCTV-9 Documentary "Amazing Engineering"

Now on air

Drone perspective

Take you to see the Chinese bridge across mountains and seas

Beipanjiang Grand Canyon

The left bank is Yunnan, the right bank is Guizhou

Cliffs on both sides of the river

The narrowest part of the valley is only a few hundred meters

A long time ago, people in the mountains who lived hundreds of meters apart

We may never live under the same roof.

Until later, a bridge appeared.

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Beipanjiang First Bridge

Standing on the top of Beipanjiang Grand Canyon

The total length is more than 1,300 meters, connecting Yunnan and Guizhou provinces

The locals jokingly call it the "marriage bridge"

It has won the "Gustav Gold Medal"

This award is the first in the field of bridge engineering

Considered the highest honor on par with the Nobel Prize

Of course, the Beipanjiang First Bridge amazed the world.

More than just appearance

From the bridge to the valley bottom

The height reaches 565 meters

It thus became the tallest bridge in the world

As a famous long-span cable-stayed bridge

The first Beipanjiang Bridge has 224 cable stays.

Hidden in these white sheaths are the cables

The diameter is only 15.2 mm

But galvanized steel wire makes its tensile strength

The strength is 4-8 times that of ordinary construction steel.

These cables also use the most advanced anti-corrosion system

Special sheaths and coatings

Protect the steel cable from wind and rain

Let the bridge stand firmly on the top of the rock

If you have to add a deadline

The number given by the designer is at least one hundred years

Above the East China Sea

Zhoushan Archipelago consists of more than 2,000 islands

It's a dream place

Across the sea, there is no way to travel without a boat

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Until December 25, 2009

Zhoushan Cross-sea Bridge fully opened

From now on

Zhoushan has transformed from an isolated island into a peninsula

Zhoushan Cross-sea Bridge spans 4 islands

Cross 9 culverts and pass through 2 tunnels

The total length is nearly 50 kilometers

It is the world's largest land-to-island connection project.

In fact, it is not just a bridge.

But by 5 bridges

and the roads that connect them.

Jintang Bridge and Taoyaomen Bridge are twin-tower cable-stayed bridges.

Cengang Bridge and Xiangjiaomen Bridge are continuous beam bridges.

Xihoumen Bridge on Xihoumen Waterway

It is a suspension bridge

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The main span of Xihoumen Bridge is 1,650 meters long.

When it was completed, it was the largest suspension bridge in the country.

This is also the first time that my country has carried out a typhoon-prone sea area.

The largest suspension bridge ever built

In order to ensure the smooth operation of the bridge in extreme environments

Xihoumen Bridge adopts split steel box girder

There is a structural wind tunnel in the middle

The wind can pass through it

The bridge can withstand a super typhoon of level 17

Cross-sea bridge

It has turned Zhoushan from the end of land transportation

It has become a regional transportation hub

Today, the cross-sea bridge on Zhoushan Islands is still extending

End of 2021

Zhoudai Bridge connecting Zhoushan Island and Daishan Island opened to traffic

Another cross-sea bridge leading to Yangshan Port

Also under planning

These huge continental island connection projects consisting of cross-sea bridges

The economic pulse of the Yangtze River Delta region will continue to be strong

Qiannan Buyi and Miao Autonomous Prefecture, Guizhou Province

Stone peaks stand in rows, and the canyon is deep

For thousands of years, transportation here has been inconvenient.

Until a bridge appears

Pingtang Bridge

It spans the Caodu River Grand Canyon and is 2,135 meters long.

The bridge deck is a two-way four-lane

Expressway with a designed speed of 80 kilometers per hour

It connects Pingtang and Luodian

Reduce the two and a half hour journey to one hour

It not only opened up the main transportation routes across the province,

It also connects important sections of inter-provincial highways.

Image source: Xinhuanet

The heights of the three towers of Pingtang Bridge

All around 300 meters

The main tower in the middle is 332 meters high.

Taller than a 110-story skyscraper

It is the tallest concrete bridge tower in the world.

A bridge whose length and height amaze the world

Light as a bird, yet stable as a rock

The wisdom of the Chinese people has created a great miracle

The Beijing-Shanghai high-speed railway runs from north to south in eastern China

Connects two megacities: Beijing and Shanghai

And set the world record for the fastest operation speed

Hundreds of thousands of passengers travel on this route every day.

However, when initially traveling through southern Jiangsu

This track encountered a "hell level" difficulty

Southern Jiangsu is a plain river network landform.

There are many rivers and the economy is developing rapidly

Roads and farmland are everywhere, and every inch of land is valuable.

To avoid giving up land for high-speed rail construction

Causing huge resource loss

Chinese designers have come up with an amazing idea

Extend the bridge over the river to the land - replace the road with a bridge

The Danyang-Kunshan Grand Bridge is more than 160 kilometers long.

Made up of 4,500 box beams

It is currently the longest bridge in the world

Take the high-speed rail from Danyang, Jiangsu, all the way east

Passing through Changzhou, Wuxi, Suzhou, and directly to Kunshan

This is also the distance from the Danyang-Kunshan Bridge to the end of the bridge.

It only takes 40 minutes to travel through 5 cities

This river meanders through the mountains

It is called Chishui River

It is a tributary of the upper reaches of the Yangtze River.

In 1935, the Central Red Army crossed the Chishui River four times and launched surprise attacks

Finally won the battle that laid the foundation for the victory of the Chinese revolution

So the bridge over the river got its current name.

Chishui River Red Army Bridge

This is the largest bridge on the Chishui River.

The bridge connects the expressway between Sichuan and Guizhou provinces

Between the bridge towers on both sides

The steel cables hold up the bridge deck, which is made up of 81 steel trusses.

The total weight of the bridge deck exceeds 20,000 tons

Like floating above the mountains

The distance from the bridge deck to the river surface is more than 300 meters

Some people are curious

Why was the bridge built at such a high place?

The Red Army Bridge over Chishui River is located in the Wumeng Mountains.

It is a typical plateau mountain structure.

Building roads in the mountains

Bridges and tunnels are indispensable

But engineers don't want the tunnel to be too long.

Highway in operation

Tunnels cost more to maintain than bridges

The tunnel also needs to solve the ventilation problem

In addition, a tunnel that is too long will also affect the driving experience

In order to make the bridge

More economical, more efficient and safer

Designer comprehensive comparison

Bridge and tunnel operation and maintenance costs

The bridge was chosen to be built more than 300 meters above the river.

Let the mountains come to your feet and turn the natural barriers into thoroughfares

We always say

China has an "infrastructure maniac"

In fact, there is no such thing as "magic"

They are all simple and kind workers.

Because they

We have surpassed human limits.

The magic that creates world wonders

Salute to every ordinary and great infrastructure worker!

Source: CCTV News WeChat Official Account (ID: cctvnewscenter) CCTV-9 documentary "Amazing Engineering: Chinese Bridge"

Producer/Li Zhe Editor-in-chief/Ma Wenjia

Editor/Yang Huijun Proofreader/Zhang Tianyu

©CCTV News

Salute to the builders!