March 1.

Ge Xiaotian arrived at the Yinshan Engineering Department of Tiancheng Bridge.

Strictly speaking, the all-way west expressway originated from Qinggang, Dongshan, passes through Shijiazhuang, Xishan, Jinyang Prefecture, enters Yulin, Shaanxi, and goes directly to Yinchuan. Then, by means of a "rocket-building bridge", it crosses Helan Mountain and arrives at Alxashan, not through Yinshan, located in the middle of the grassland.

However, the West Expressway has strategic significance and extremely important economic value in coordinating the overall situation. In addition, the ground-effect transportation connects the northwest, forming a "bond" across the entire China, causing the board of directors to begin to consider the "vertical" issue.

That is, through this east-west highway, we will drive the economic development of the surrounding north-south regions and complete strategic deployment.

For example, build a highway or railway from Yulin to Ordos and Hohhot, which runs through Yinshan and goes directly to Erlianhot, an important border town.

Then, from Erlianhot, a major border town, along the Daxinganling Mountains, laying a ground-effect transportation line leading to Hailar (Hulun Lake) in the northeast.

In this way, the grassland green clothing can support the Northeast green clothing at any time and reach a joint defense system.

However, since Tiancheng has not yet developed a mountain-type ground-effect aircraft, the board of directors had to build the Yinshan section first.

As Tiancheng promoted the I-character giant track, the superiors changed the project to railway transportation and handed over it to Huaxia Energy Construction for responsibility.

During this period, Huaxia Energy Construction has absorbed the old team of Railway Construction. After the rectification, it has started the infrastructure mad model.

Build a wind power tower in the grassland,

Laying solar energy systems in the desert,

Build giant rail transportation in Dongshan to Tiancheng,

In Xiaolangdi, the power station is renovated for the Sanjiang convergence project.

Preparing the first building in the Asian region on Wuzhou Avenue in the Magic City,

Help Teddy Road and Bridge explode mountains in Hanzhong...

However, the huge business volume soon led to insufficient talent in Huaneng Construction.

Not manpower, but talent.

Including exploration, design, engineer, mechanic...

To this end, Huaneng Construction and Tiancheng International Holdings signed a talent sharing agreement.

Share Tiancheng Labor Dispatch Company, Share Tiancheng Architectural Design Research Institute, Share Tiancheng Bridge Design Research Institute, Share Tiancheng Water Conservancy Engineering Company, Share the high-tech talent incubation base built on Tiancheng Technical Technical Technical College...

Therefore, the bridge department responsible for the construction of Helan Mountain rocket was divided into Huaneng Construction Group and renamed Yinshan Bridge Engineering Department.

When Ge Xiaotian walked into the temporary command office, he was discussing the 'Yinshan Bridge' project.

The Yinshan Bridge is not the Helanshan Bridge that Tiancheng planned to build with rockets. It is located in Yinshan in the north.

Yinshan is the east-west geographical dividing line in northern China, with an average altitude of 2,500 meters.

Its northern slope connects the grassland, and the terrain is gentle, but 95% of the areas do not grow any grass.

Its southern slope connects to the Hetao Plain, and its landform is mainly formed by fault falls, with an average drop of nearly kilometers.

It is the fold-like terrain of the southern slope that forms a natural barrier, making Yinshan occupy an important position in Chinese history and leaving behind many humanities.

For example, Zhaojun’s Tomb, Zhao Great Wall, Jilusai…

For example, the poet Wang Changling's "but the flying general in Longcheng is here, and he will not teach Hu horses to cross Yinshan"...

However, the landform is complex and surrounded by cliffs composed of ancient metamorphic rocks. And here it is still a "address fault zone". According to current conventional construction technology, it is impossible to build bridges at all.

Tiancheng Bridge Design Institute has been exploring and researching for a year, and finally used a seismic anti-seasoning system combining semi-overhead and dampers as the main construction plan.

The semi-floating system with a semi-floating structure similar to a sea-span bridge, refers to the bridge's beams and towers and piers that are not rigidly connected, but are connected through sliding support. During earthquakes, the fully cable-stayed bridge can swing longitudinally to avoid structural resonance and achieve the purpose of seismic energy dissipation.

The damper refers to a device that provides resistance to movement and consumes movement energy, similar to a shock absorber.

Using damping to absorb energy and shock is not a new technology. It has many applications in aerospace, aviation, military industry, firearms, automobiles, etc., but it has only begun to be widely used in engineering in the new century, with Tiancheng steel structure as the most.

The combination of the two forms the main body of the bridge, spanning the entire Yinshan Mountain, with a total length of 36 kilometers.

These include 11 cable-stayed bridges with an average span of 1,200 meters to pass through the canyon between cliffs.

In order to fix the bridge, the canyon used a hydraulic aerodynamic rig to form holes to create pile foundations, and six 4,000 cubic meters of bearings were placed respectively to ensure the stability of the cable-stayed bridge cable tower with a chain reaction device.

In layman's terms, it means drilling two rows of deep holes on the soft sand beach, inlaid thousands of "nails" that penetrate the sand layer, then pressing several heavy large iron blocks on the top of the nails, welding the two together, and then laying iron plates with shock absorption devices above the iron blocks, thus forming the "Yinshan Bridge". Even if the sand layer collapses, even if the typhoon strikes, even if a magnitude ten earthquake occurs, unless the radius of 200 square kilometers collapses, the bridge can ignore natural disasters.

Therefore, although the Yinshan Bridge is not large in span, it is the first giant bridge system of the parent star to span the 'geological fault zone'.

The construction difficulty is so high that it ranks first in the history of the home star bridge. If it is completed, it will break a series of bridge records.

Therefore, this project is the 'famous battle' of 'Huaxia Energy Construction'.

The investor is the board of directors, with a total construction cost of about 24 billion yuan.

Ge Xiaotian felt it was unlucky and secretly asked the leaders of the Railway Construction Corporation to urge the board of directors to add 1 billion red money to Tiancheng Electric Industry to improve electrification facilities, open digital management and information operations, and the final cost became 25 billion.

This cost is a real cost, not a quotation.

Because all materials come from the Tiancheng industrial chain, they are almost out of the warehouse at cost.

The exploration and design were also completed independently by Tiancheng, and there was almost no money.

The remaining transportation, labor, machinery, fuel, and Tiancheng only earns the money they should make.

If overseas construction companies are asked to evaluate the Yinshan Bridge, the cost will not be less than 200 billion red banknotes.

Therefore, the board of directors is very satisfied with Huaneng Construction's 20 billion yuan to do 200 billion yuan work.

At the same time, it was announced overseas that the Zaoyin Mountain Bridge cost 300 billion yuan.

First, the Yinshan Bridge is worth the money, second, for GDP, and third, large projects are being carried out overseas.

Starlinks in North America, Boat of Freedom in North America, Alpine refuge in Canada, Floating islands in the sky, French private airships, Ice Bear Arctic ships, England...

People are doing it, but if we don’t, it will seem a bit alternative. Although Lao Ge has developed an Ark plan, it is not an official investment.

Therefore, the board of directors announced the launch time of the Shenwu manned spacecraft and the plan for the Tiangong Space Station.

This seems to have turned into a super competition of 'Salary Escape'.

Is the cause...

2012.

Ge Xiaotian wanted to laugh when he remembered this, but then he was a little cautious.

In another nine years, this cowhide will be sarcastic. What should I do then?

I am afraid that people who are not all mother stars will call themselves liars...

"Boss!" Seeing him walking into the command office, General Manager Liang of the Bridge Design Institute stood up and greeted him.

"How is the progress?"

"Everything is normal on the Yinshan Bridge. The pile foundations and support platforms on both sides of the Helan Bridge canyon have been completed, and the suspension bridge is only waiting for construction."

"Stay good rest for a day, keep your energy up, and wait until the staff and equipment are all here tomorrow to overcome the difficulties!"

"It's guaranteed no problem!"

The difficulty in building the Helan Bridge is nothing more than the conventional construction method, and the pilot rope cannot be pulled opposite the canyon.

Therefore, Tiancheng Bridge Design Institute formulated the 'rocket bridge-making technology' and used a rocket to drag the pilot cable over.

What is a pilot rope?

It can be described as a 'construction rope'.

Just imagine, the span is about 1,700 meters and the depth is 1,300 meters. If nothing is crossing the air, it is used to fix the 'scaffolding', how can workers and machinery build bridges?

And what is horizontal in the air is called the main sling.

According to the needs of the Helan Bridge, the main slings nearly two thousand meters long, even if the anchor ingot is not calculated, weigh up to 200 tons, and there is more than one set. Otherwise, the steel box girder will not be able to be hung, and multiple steel box girders will not be able to be connected.

In order to facilitate laying a 200-ton main sling, you must first pull a "thin rope" to the opposite shore, and then use a super winch to index the 200-ton main sling to pass, then fix the main sling and anchor ingots. The main sling is suspended by a vertical sling, hooking the steel box girder, and connecting multiple steel box girders. The main structure of the suspension bridge is formed. Then, then overlap the telescopic components between the box girders, pave the road surface, and the bridge can be opened to traffic...

And this is the "thin rope" that pulls the main sling, which is the pilot rope.

Of course, the technology of large-span bridge construction is different from the construction of a cross-sea bridge.

Moreover, this is the first time Tiancheng has built a suspension bridge, and the cable-stayed bridges have been built before.

What's the difference between the two...

The suspension bridge has bridge columns at both ends and the bridge is lifted with arc-shaped ropes in the middle.

The cable-stayed bridge has bridge columns in the middle, and both ends of the bridge are hung with ropes.

Of course, different technologies and different presentation methods are different. Tiancheng once used a cable-stayed glass suspension bridge in the Canal Development Zone.

That is, bridge columns that are inclined outwards are set on both sides of the bridge, which pull the bridge body from both sides, which looks like a suspension bridge structure, but is actually a cable-stayed bridge.

The Yinshan Bridge in the north uses a suspension bridge that looks like a cable-stayed bridge.

That is to say, bridge columns are built on multiple hills and bridges are laid between hills through steel ropes. They look like cable-stayed, but in fact they are extremely huge suspension bridges.

Strictly speaking, it is easy to distinguish the two from the appearance, but in fact, due to the influence of technology, it is difficult to distinguish in structure. Even with the improvement of technology and materials, two technologies will begin to be mixed in the future to avoid geological disasters.

…………

The next day, March 2nd.
To be continued...