Chapter 278 Han Xing is here to slap you in the face
Three o'clock in the morning.
Shen Hanxing’s white shirt was already soaked with sweat.
She stared at the remodeled pile group on the screen, and her pupils suddenly contracted violently.
After considering the viscous damping effect of the ancient river channel sediment layer, the frequency response curve of the pile foundation showed a strange double peak phenomenon.
It is like an invisible hand repeatedly plucking the structure's "strings" under the typhoon load.
"It's not resonance, it's parametric vibration."
She suddenly smiled, her fingers tapping rapidly on the keyboard. "When the frequency of the typhoon's pulsating load approaches half the natural frequency of the pile foundation, it will trigger parametric resonance, just like the periodic adjustment of the center of gravity when swinging on a swing..."
In the morning light, Qi Moxun pushed the door open, holding two cups of cold black coffee. He looked at the timeline analysis curve dancing on the screen.
Suddenly I noticed that the red pen that Shen Hanxing used to mark the data was full of miniature seismic dampers on the edge of the drawing.
"You want a tuned mass damper?" He frowned. "But that's the foundation, not the top..."
"Of course conventional dampers are useless." Shen Hanxing turned his chair, his eyes shining like the midday sun.
"However, if viscous damping connectors are installed between the pile caps, and the principle of soil-structure interaction is utilized, parametric resonance can be converted into damping dissipation..."
She suddenly grabbed a marker and drew a bird's-eye view of the pile foundation group on the glass whiteboard.
"Look, the matrix formed by the twelve groups of piles is like a giant array of strings, and the damping connectors are the silencers added to each string."
Qi Moxun's breathing paused. Those complex mechanical formulas automatically transformed into three-dimensional models before his eyes.
When Shen Hanxing mentioned "soil-structure dynamic coupling analysis based on ABAQUS", the admiration in his eyes could no longer be concealed.
"Han Xing, you are indeed my lucky star."
Problems that I had never thought of before were now easily solved.
Of course, those engineers also have their own shortcomings.
On the contrary, he is not as good as the bystander Shen Hanxing.
He reached out and gently pressed Shen Hanxing's shoulder.
"How about you take a rest first and I'll have someone prepare breakfast for you?"
"Need not."
Shen Hanxing tapped the tip of his pen on the name "Anderson".
"Because someone deliberately used the wrong soil parameters to muddy the water. They probably didn't expect it."
She pulled the original survey report from a drawer. The first page was signed three days before the project began. "We must insist on a third detailed geological survey."
In the morning light, Qi Moxun looked at the dark circles under her eyes, and felt sad.
I couldn't help but reach out and gently hold her in my arms.
The voice is low.
"Thank you very much."
Shen Hanxing leaned in his arms and didn't dodge away.
She was actually very tired.
But inexplicable.
When I leaned on the man, the fatigue in my body seemed to be cleared away.
"I need to access the company's supercomputing center."
"We also need to contact a domestic seismic laboratory to conduct a 1:50 scale dynamic test on pile foundation groups. Also..."
She suddenly reached out and pushed the man away. "Could you please send an invitation to Mr. Anderson? I'd like him to observe our simulation."
Qi Moxun raised his eyebrows: "Are you going to slap me in the face?"
"No." Chen Hanxing flattened the crumpled quality inspection report. The red warning number on it was gradually decreasing in the new model. "I just want everyone to know that the word 'almost' does not appear in our engineer's calculations."
…
In this matter, everyone felt that the Chinese had no choice but to admit defeat.
Can……
When Anderson rushed into the temporary laboratory with two officials from the Australian Bureau of Standards, Shen Hanxing was adjusting the excitation parameters of the vibration table.
In the transparent water tank, twelve micro pile foundations tremble slightly with the sinusoidal wave load. The silver dampers between the pedestals are like dewdrops strung on a spider web, converting every vibration into fine ripples.
"Look, when the excitation frequency reaches 1.2Hz..." She pressed the start button, and the "soil layer" in the water tank suddenly became turbid.
The amplitude of the pile foundation was miraculously stabilized within a safe threshold. "The damping connector dissipated 83% of the resonant energy, an effect that traditional designs simply cannot achieve."
The official from Country M came to the data screen and suddenly exclaimed.
Those red warning curves that once gave them headaches are now lying obediently in the green safety zone, like tamed horses.
Anderson's lips moved, but no words came out.
Chen Hanxing flipped open her notebook, which contained the patent documents she had translated overnight. "This damping connection technology between piers has been used in large bridge and island tunnel projects in China. If you require it, we can provide a complete technical briefing..."
In the morning light, Qi Moxun was standing side by side with her. Their shadows were stretched out long on the test bench, like two piles deeply driven into the ground, firmly supporting the building and the engineers' bones.
The sunlight was filtering through the floor-to-ceiling windows of the laboratory, casting a golden edge on her hair.
Qi Moxun looked at the light flashing in her eyes and suddenly realized that Chen Hanxing had never been a flower in a greenhouse.
It is a foundation that can stand firm in the storm. The harder the soil, the deeper and more amazingly stable it can be.
"Han Xing," he suddenly stretched out his hand, his fingertips brushing across the shadow of the sun on her shoulder.
"You are dazzling today!"
Shen Hanxing was stunned, and the tips of his ears gradually became hot.
But when she realized what she was thinking about, she felt a little embarrassed.
"Mr. Qi," she suddenly turned around and typed out the final safety report on the keyboard.
Pretend to be calm.
The speech is also very official.
"Now is not the time to talk about this." On the screen, all the warning lights went out one after another, turning into a quiet blue.
"We have more important things to do—for example, showing the world how solid the foundations of Chinese architecture are."
Outside the window, the roar of the crane sounded again.
This time, the crane arm no longer hangs controversial steel structures.
Instead, it is a damping connector that carries new hope.
When the first ray of morning light fell on Shen Hanxing's calculation draft, those densely packed formulas seemed to come alive.
Transformed into tens of millions of tough steel bars, they cast the pride of Chinese engineers on foreign soil.
…
I thought everything would go smoothly.
Who would have thought that the weather in Country M is as bad as a baby's face.
When Shen Hanxing was about to pack up and return to the hotel and bought a return ticket, it suddenly started to rain heavily.
She suddenly realized something and rushed out.
The heavy rain hit the tempered glass of the construction elevator like countless bullets.
Shen Hanxing's hand, clutching the intercom, was covered in mud as he watched the vertical deviation of pile foundation No. 17 on the monitoring screen soar from 0.3% to 1.2%.
And a quicksand pipe burst occurred in the foundation pit!
The embedded bolts of the damping connector were crooked!
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