intellectual norms

The municipal library is a huge complex. The main part of the library is below the lotus pond, and the part above the lotus pond is the restaurant and cafe leisure area.

At noon, when it was hottest, Xia Xiaoli and Qiao Yu ate here to hide from the sun.

Since Xia Xiaoli seemed to have a little interest in architecture and bridge design, Qiao Yu helped him choose a few introductory books that are suitable for non-professionals to read, and Lin Zhihua also borrowed the book.

Now, the two of them finished eating in the cafe, each of them sank into the sofa with a book, and the years were quiet.

Waking up early in the morning, and getting sleepy after eating, Xia Xiaoli still couldn't resist her body's natural reaction, and fell asleep on the sofa with a book covering her face.

Qiao Yu didn't wake him up, but just stretched out his hand to help him take off the book that was pressing on his face. His fingers brushed against Xia Xiaoli's chin unintentionally. characteristic fluff.

Xia Xiaoli smacked her mouth foolishly, but didn't wake up.

Qiao Yu just thinks this child is cute. He often has a dazed expression when he is awake, and even more dazed when he is asleep. He is obviously a handsome boy with long eyebrows and slender eyes. He is smart, but he has no shrewdness.

Some beautiful little boys fall asleep like angels, but Xia Xiaoli is not. His single eyelid eyes are thin, slender and delicate, but his lips are ruddy and sensual. But Qiao Yu really liked watching him, and somehow felt healed, and his mood was as bright and relaxing as the spring breeze in May.

It's amazing to think about it. Less than two months after returning to China, the new friend I got to know the most turned out to be a child who was so much younger. If Chen Ke knew, that bad mouth would not be able to say that he was a father who broke out and took the child with him. addicted.

No no no no, this will be leisurely, Qiao Yu also thinks casually, he is not in the mood to take care of children, although Xia Xiaoli is young, he still feels more like a friend, what is this, forgetting friends?

Cough, this is a bit exaggerated, Qiao Yu has never felt that he is too old, but at the age of 33, he will be a man in his prime in all aspects, whether it is career or physical fitness, not to mention psychologically, A single man who does not need to support his family can die a teenager.

The scorching sun outside gradually shifted its direction. After three o'clock, Qiao Yu finished reading a book written by a domestic colleague, and it was quite rewarding. Seeing that Xia Xiaoli hadn't woken up, she didn't even move her sleeping position on the sofa.

He got up and went to the bathroom, and when he came back, he saw that the person on the sofa had just woken up, and sat up in a daze, with a few hairs curled up from sleep, Qiao Yu stood behind Xia Xiaoli's sofa, and smoothed those unruly hairs , Xia Xiaoli seemed a little unhappy, and said: "Why did I fall asleep... I have been asleep for so long, Brother Qiao, you don't call me."

Qiao Yu sat back opposite him, jokingly said, "I don't care about it when I'm asleep, but I start blaming others when I wake up, how could that happen, Xia Xiaoli."

Ah, Xia Xiaoli patted his head, really sleepy, he said: "That's not what I mean...Brother Qiao, it's just that it's rare to come out with you, it's a waste of time to fall asleep."

For some reason, Qiao Yu felt a little touched when he heard this. Does this kid like being with him so much?He spoke again, with a very gentle voice: "It's still early, the hottest time has passed, it's just right."

Xia Xiaoli just checked the time, it turned out that it was only 03:30, and she didn't sleep too much.

"Do you want ice cream?" Qiao Yu asked him, "I saw a special handmade ice cream counter over there just now, do you want to eat it?"

Xia Xiaoli squinted her eyes involuntarily, and licked her lips with the tip of her tongue. Now that Qiao Yu looked so familiar, she got up and went to buy it for him.

Hehe, Xia Xiaoli, who was full and waking up, became secretly happy again.

There is no lychee flavor here. Qiao Yu bought the white peach and raspberry flavor. Xia Xiaoli picked up a spoonful and fed it directly to Qiao Yu's mouth: "Brother Qiao, eat first."

Qiao Yu was taken aback, and suddenly felt a little embarrassed. She glanced around and found that the guests were okay. It happened that a girl waiter saw her, she pursed her lips and smiled secretly, with an expression of being stunned... Qiao Yu was embarrassed He had no choice but to cover his face with one hand and ate the scoop of ice cream, and then said, "Eat what you want, don't give it to me."

He thought to himself that maybe he was regarded as a couple by the little girl just now... There is really no way to explain it.

Xia Xiaoli didn't know it, she ate the ice cream with her heart bubbling, and the heat outside went down a bit. It was almost four o'clock, and the two got up together, "Let's go for a drive."

The Denghong River comes from the distant mountains and has different names in different sections. When it reaches Denghong City, it is named after this city. It is close to the mouth of the sea when it flows through. The river is wide and gentle. A big river with wide waves will make Denghong The city is divided into two, and there is a bridge across the river every few kilometers.

Still following Xia Xiaoli's route, they ran from the oldest bridge.

It was a bridge that was not located in the center of Denghong City. It came out of the mountain, crossed the river, and reached the development zone on the other side.

The bridge deck is very narrow, with only four lanes in both directions, but it is double-decker, with vehicles and pedestrians going up and trains going down.

As the car drove onto the bridge, Qiao Yu deliberately slowed down and explained to Xia Xiaoli: "This bridge can also be regarded as a symbol of Denghong City. Although it is a little crude now, this is the first truly modern steel bridge in our country. The structure of the bridge was designed by our country itself, and it is a construction recorded in the annals of history."

"At that time, only simple simply supported bridges could be built, that is, a crossbeam was erected on two adjacent piers. Most of the bridges in the early days of the founding of the People's Republic of China were like this. Later, there were more evolved continuous bridges. Now in the past It’s still going strong after decades.”

"This bridge has a very famous history, does Xiaoli know?"

Xia Xiaoli stared out the window, looked back at Qiao Yu and shook her head in embarrassment, she had seen the bridge countless times, why did it feel so fresh and different today?

Qiao Yu said: "The bridge was first built in 1937. Less than three months after the bridge was completed and opened to traffic, the Japanese army captured Shanghai. In order to prevent the enemy from crossing the river here, Mr. Mao Yisheng, who designed the bridge, had to He personally blew up the bridge, so the first generation of Denghong Bridge sank into the river, and it was not rebuilt until after the founding of the People’s Republic of China, which is what we see now.”

"Wow..." Xia Xiaoli felt like a fake climber. He had clearly seen the statue of Mr. Mao Yisheng erected beside this bridge. It seemed that this history was also mentioned in the history textbook, but he had no impression of it at all. ... He felt that he really shouldn't be, how can he not care about anything, what a fool.

But Brother Qiao said it once and he remembered it, it's amazing.

Cross the river, get off the first bridge along the ramp at the other end, and drive along Wentao Road beside the Denghong River, and another modern bridge can be seen far ahead.

The naked eye can see that it is an arch bridge. Xia Xiaoli has just read a few pages of the book, and she is learning and selling: "Brother Qiao, this bridge is different from the one just now. It is an arch bridge, isn't it?"

"Well, smart." Qiao Yu encouraged the children's eagerness to learn at the right time, and Xia Xiaoli was indeed right, although the shape of the arch bridge can be seen at a glance.

"If I remember correctly, this bridge should have happened around 2000. At that time, a very popular technology called concrete-filled steel tube arch bridge was to fill concrete into steel tubes, so that the steel tubes had a "protective shell", so it was better than ordinary concrete. It is stronger and more reliable, and the steel pipe can also be used as a construction skeleton, which greatly reduces the difficulty of arch bridge construction."

"Look carefully——" the car had already driven to Shangqiaokou, and Qiao Yu seized the opportunity to say: "This is a tie-bar arch bridge. The tension of the rods replaces the thrust of the supports. This kind of concrete-filled steel tube tied-bar arch bridge is very common in my country, and almost half of the road bridges are of this kind, which can be said to be the best in all aspects."

Xia Xiaoli half-understood these words, but he figured out something: "So there are many kinds of arch bridges?"

"By the way, have you ever heard of Zhaozhou Bridge? The stone arch bridge has gone through more than 1400 years, and it is still intact. In the later development of arch bridges, there is a kind that was pioneered in my country, called truss arch. The bridge body is lighter, and the maximum span can reach 330 meters. The representative of this is the Jiangjiehe Bridge in Guizhou Province, which is the world's longest concrete truss arch bridge."

The car has already boarded the bridge. This modern bridge has a wide deck and two-way six-lane lanes. When the night gets darker, decorative night lights that change colors constantly will light up on the steel arches, which is a landscape on the Denghong River at night.

Xia Xiaoli said: "It will be very beautiful when the lights on the bridge are lit later."

"Well, we should be on both sides of the river in a while, and we should be able to see it." Qiao Yu said: "It is also a very classic design to have decorative lights on large steel structures, such as the Eiffel Tower, which shines like a string of sparks at night. , is a place where many people witness love."

Who says engineering people don't know romance? Qiao Yu chose architecture at the beginning because it is a discipline that can perfectly combine rationality and sensibility. Using a series of sophisticated calculation formulas, they realized all their pursuit of romance.

The author says:

The bridge built by Mr. Mao Yisheng is real, it is the Qiantang River Bridge in Hangzhou, here we borrow it in the name of Denghong City.