On the afternoon of November 28, Xiaoxin broadcast the whole process.
byChina RailwayInvestment, construction.
The National Highway 109 New Line Expressway Project Anjiazhuang Bridge was successfully turned.
This is the world's first pier top double-rotating curved steel truss cable-stayed bridge.
Successfully crossed the Fengsha Railway, Yongding River and 109 National Highway.
Anjiazhuang Bridge left and right width rotation weight.
15,800 tons and 9,400 tons, respectively.
The rotation system is located at an altitude of more than 30 meters.
Under the traction of 4 jacks.
The left and right widths of the bridge need to be rotated by ° respectively
With the smooth turnaround of the Anjiazhuang Bridge.
National Highway 109 new line expressway is the whole line.
The main works of 35 bridges have been completed.
National Highway 109 New Line Expressway.
Total length is about 654 km.
After completion, it will become a rapid transportation corridor connecting Hebei and western Beijing.
Effectively alleviate the traffic pressure in the northwest and southwest of Beijing.
Inject new momentum into the integrated development of Beijing-Tianjin-Hebei.
On the day of the turn of the bridge.
"Beijing 10,000-ton Bridge Aerial Turn".
“2.50,000 tons of bridge double-width synchronous air turn".
"Straight to the west of the Beijing 250,000 tons of bridge turnaround".Topic.
Rush to Douyin, fast hand short**.
and hot search lists such as live broadcast hot lists.
Shocked by the efficiency and precision of the turn.
The majority of netizens have praised **.
This bridge that the whole network pays attention to.
What are the "surprises" in the construction process
Xiaoxin decrypts it for everyone.
9 cm "steel armor".
Challenge a new record for aircraft carrier-class welding technology
In order to meet the requirements of flooding.
Reduce the area of the bridge pier occupying the river channel.
The minimum pier diameter of the bridge is only 3 meters.
It's like on the "little waist".
Carrying a "10,000-ton giant ship".
The project team is outside the concrete pier.
Customize a special piece of "steel armor".
In order to improve the bearing capacity of the pier column.
Its welding process and accuracy are comparable to those of aircraft carriers.
2159 tons of steel cap beams.
It is the largest weight of a single steel cap beam in China
The steel cap girders on the pier pillars are like the "shoulders" of the bridge
It directly carries the entire load of the main beam.
The total length is 60 meters, the width is 7 meters, and the height is 8 meters.
When erected, it is equivalent to the height of a 20-story building above ground.
Weighs 2159 tons.
For ease of installation and transportation.
The steel cap beam is divided into 8 segments.
Install from both ends to the middle.
And use 500 tons of crawler crane for hoisting.
2097 members.
Assemble large steel "building blocks" at a height of 100 meters
The main girder of the turntable bridge of Anjiazhuang Bridge.
The left panel is 496 meters long and the right panel is 342 meters long.
Its steel structure is composed of different forms.
Composed of 2097 types of steel "building blocks".
The assembly of steel "building blocks" is not a one-step process.
It needs to be adjusted while assembling it.
Utilize a 360-degree monitoring system without dead ends.
Real-time display of key hoisting information.
Accurately control the "building block" splicing error at the millimeter level.
The rotation system is cumbersome.
The double rotation body of the Beidou escort pier top achieves millimeter-level accuracy
The rotating system of the entire bridge is located at an altitude of more than 30 meters.
It is the "heart" of the turnaround construction
The project team adopted the Beidou positioning intelligent monitoring system.
Send real-time data back to the BIM information model.
Realize the synchronous rotation of "online model + offline entity".
It greatly improves the safety of rotating construction.
In fact. Aerial ballet", "Lingbo microstep", "building block splicing".
It is already a central infrastructure enterprise.
It's a "basic operation" that you can easily and easily master.
Aerial ballet
November 15, byChina Railway ConstructionUndertaken.
Anhui Hefei Wenzhong Road across the Hefei East Railway Station turnaround bridge.
It is the first case of asymmetrical widening hanging basket construction rotating bridge in China.
Weight 210,000 tons of pier 46 rotating beam.
After 120 minutes of turnaround construction.
Turn 74 degrees clockwise.
Arrive at the designated location.
"Hand in hand" with pier 45 rotating beam in the air
The total span of the bridge is 257 meters.
Total weight 340,000 tons.
The construction team adopts BIM+GIS+IoT based on it.
Railway "smiley" monitoring system.
Early warning through round-the-clock millimeter-level settlement analysis.
Ensure that the bridge main pier cap and turntable foundation pit excavation process.
Safety of railway operations.
Limbo microstep
Recently, byCCCGDesigned and developed.
The world's first 2,000-ton bridge deck crane.
It is the world's largest span cable-stayed bridge.
Jiangsu Changtai Yangtze River Bridge.
Realize intelligent equipment bridging.
Bridge deck crane with a dead weight of 900 tons.
The bridge deck "walking" comes with "light work".
On average, "walk" 1 meter per minute.
The gait is flowing and light.
The maximum lifting capacity of the bridge deck crane is 2000 tons.
The maximum lifting height is 81 meters.
It is equivalent to 1,400 cars at a time.
Lifted to the height of 27 floors.
It is the largest lifting capacity of the same type of products in the world.
It has truly realized the "great shift".
Building block stitching
Cool "building blocks" building mode.
InChinese architectureParticipated in the construction.
Shenzhen Aerospace Industry Research Institute Headquarters Building. Become a reality.
The curtain wall construction area of the project is 40,000 square meters.
It adopts the newly developed one of China State Construction.
D Series Unitized Curtain Wall System".
Easier installation and better performance.
Traditional framed glass curtain walls are complex.
20 people installed 2,700 square meters of glass curtain wall.
It can take up to 50 days to complete the installation at the earliest.
The unitized curtain wall used for the project.
All frames and glass are machined in the factory.
The construction crew only needs to "build blocks" on site.
Blocks are installed according to drawings and numbers.
Less than 15 minutes.
A piece is 45 meters, width 155 meters.
Curtain wall glass weighing up to 550 kg can be installed.
Seven people can install 2,700 square meters in 13 days at the earliest.
The construction efficiency has been greatly improved.
Cooler, more efficient, smarter.
The national team "is constantly being used.
New design, new process.
New management, new equipment.
Serve our convenient new transportation and beautiful new life.
endRecommended Reading:(Click ** to get the full article).
Editor-in-charge丨Sun JingExecutive Editor-in-Chief丨Liu Haicao, Zhang Haoran.
Contents**丨China Construction, China Railway, China Railway Construction, China Communications Group.