When you walk on any road or railway in China
There is a high probability that you will meet more than one bridge
They vary in length and shape
The number is even more breakthrough
1,000,000 seats
Bridges after bridges
Outline the footprint of China's development
From cable-stayed to suspension, from crossing the river to crossing the sea
China's "Bridge Family"
With amazing speed and quality
To the forefront of the world
Beipanjiang Grand Canyon
On the left bank is Yunnan, and on the right bank is Guizhou
The cliffs on both sides face each other
The narrowest point of the river valley is only a few hundred meters
A long time ago, people in the mountains were hundreds of meters apart
You may not be able to walk under the same roof for the rest of your life
Until later, a bridge appeared
The first bridge of the Beipan River
Standing at the top of the Beipan River Grand Canyon
With a total length of more than 1,300 meters, it connects Yunnan-Guizhou provinces
Laughingly known as the "Marriage Bridge" by locals
It was awarded the "Gustav Gold Medal"
This award is in the bridge engineering community
It is regarded as the highest honor at the Nobel Prize level
Of course, the first bridge of the Beipan River amazes the world
It's not just about looks
From the bridge deck to the valley floor
The height reached 565 meters
It thus became the world's highest bridge
As a famous long-span cable-stayed bridge
The first bridge of the Beipan River has a total of 224 cable-stayed cables
Cable-stayed cables hidden in these white sheaths
The diameter is only 15.2 mm
But galvanized steel wire gives it tensile strength
It has reached 4-8 times the strength of ordinary construction steel
These cable-stayed cables also incorporate state-of-the-art corrosion protection systems
Jackets and coatings of special materials
Protect steel cables from wind and rain
Let the bridge be firmly anchored on the top of the rock
If you have to add a deadline
The figure given by the designers is at least a hundred years
Above the East China Sea
The Zhoushan Islands consist of more than 2,000 islands
It's a dream place
Looking at each other across the sea, non-boats cannot communicate with each other
Until December 25, 2009
The Zhoushan Bridge was fully opened
from now on
Zhoushan went from an island to a peninsula
The Zhoushan Bridge spans 4 islands
Over 9 culverts and through 2 tunnels
The total length is close to 50 km
It is the world's largest land-island liaison project
In fact, it is not just a bridge
Rather, it is made up of 5 bridges
and the roads connecting them
Jintang Bridge and Taoyaomen Bridge are double-tower cable-stayed bridges
Cen Gang Bridge and Xiangjiaomen Bridge are continuous girder bridges
Nishikaimon Bridge on the Nishikaimon Waterway
It is a suspension bridge
The main span length of the Xiyanmen Bridge is 1650 meters
When completed, it was the largest suspension bridge in the country
It is also the first time that the mainland has been in a sea area frequently affected by typhoons
Extra-large suspension bridge built
In order to ensure the smooth operation of the bridge in extreme environments
The Xiyanmen Bridge adopts a split steel box girder
There is a structural wind tunnel in the middle
The wind can pass through it
So that the bridge can withstand a super typhoon of magnitude 17
Cross-sea bridge
Already let Zhoushan from the end of land traffic
It became a hub for regional transportation
Today, the bridge across the sea on the Zhoushan Islands is still extended
End of 2021
The Zhoudai Bridge, which connects Zhoushan Island with Daishan Island, was opened to traffic
Another cross-sea bridge to Yangshan Port
It is also being planned
These huge land-island liaison projects consisting of cross-sea bridges
It will continue to have a strong economic pulse in the Yangtze River Delta region
Guizhou Province Qiannan Buyi and Miao Autonomous Prefecture
There are many stone peaks and deep canyons
For thousands of years, transportation here was inconvenient
Until a bridge appeared
Pingtang Special Bridge
Crossing the Grand Canyon of the Trough River, the total length is 2135 meters
The bridge deck is four-lane in both directions
A highway designed for speeds of up to 80 kilometers per hour
It connects Pingtang and Luodian
Shorten the two-and-a-half-hour drive to 1 hour
It not only opens up the traffic arteries that cross the province
It also connects important sections of inter-provincial highways
The height of the three towers of the Pingtang Special Bridge
All around 300 meters
The main tower in the middle is 332 meters high
Taller than a 110-story skyscraper
It is now the tallest concrete bridge tower in the world
A bridge that astounds the world in length and height
Light as a bird, stable as a rock
The wisdom of the Chinese people has created amazing miracles
The Beijing-Shanghai high-speed railway runs north and south in eastern China
It connects two megacities: Beijing and Shanghai
And set a world record for the fastest operating speed
Every day, hundreds of thousands of passengers travel on this route
However, at the initial crossing of the Southern Jiangsu region
This track encounters "hellish" difficulty
Southern Jiangsu belongs to the plain river network landform
There are many rivers and the economy is developing rapidly
Roads and arable land are everywhere, and every inch of land is expensive
In order to avoid freeing up land to build high-speed rail
This results in a huge resource depletion
The Chinese designer came up with a remarkable idea
Extend the bridge over the river to land - replace the road with bridge
The Dankunt Bridge is more than 160 kilometers long
It is made of 4500 box girders
It is currently the longest bridge in the world
Take the high-speed train from Danyang, Jiangsu, all the way to the east
It is to Changzhou, Wuxi, Suzhou, and Kunshan directly
This is also the distance of the Dankunte Bridge from the head to the end of the bridge
Travel through 5 cities in just 40 minutes
This river winds its way through the mountains
It's called the Chishui River
It is a tributary of the upper reaches of the Yangtze River
In 1935, the Central Red Army crossed Chishui four times and made surprise soldiers
In the end, the battle for laying the foundation of the Chinese revolution towards victory was won
So this bridge over the river got its current name
Red Army Bridge over the Chishui River
This is the largest bridge over the Chishui River
The bridge connects the expressways of Sichuan and Qian provinces
Between the bridges and towers on both sides
Steel cables pull up the deck consisting of 81 steel trusses
The bridge deck with a total weight of more than 20,000 tons
It's like floating above the mountains
The distance from the bridge deck to the river is more than 300 meters
Someone is curious
Why was the bridge built so high?
The Chishui River Red Army Bridge is located in the Umeng Mountains
It is a typical highland mountain structure
Build roads in the mountains
Bridges and tunnels are indispensable
But engineers didn't want the tunnel to be too long
In the operation of highways
Tunnels are more expensive to maintain than bridges
Ventilation also needs to be addressed in the tunnel
In addition, too long a tunnel can also affect the feeling of driving
In order to make the bridge
More economical, more efficient, more secure
Designers comprehensive comparison
Operational and maintenance costs of bridges and tunnels
The bridge was chosen to be built more than 300 meters above the river
Let the mountains settle at your feet, let the heavenly graben change the way
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We always say
China has an "infrastructure madness"
In fact, what is the "devil"
All of them are simple and kind laborers
Because of them
We have surpassed human limits
The "magic" of creating a world wonder
Hats off to every ordinary and great infrastructure builder!
Source: CCTV News WeChat public account