I and the bridge edge
When I first saw the bridge, it was the age of a child. In my childhood, it was the shadow of the bridge.
Since I was young, I followed my grandfather to visit mountains and rivers. I have to say that the bridge is an indispensable part.
The earliest bridge was a single wooden bridge, with a round stick to support the weight, which was very common at that time. Now, you dare to walk a single wooden bridge, which is no less than bungee jumping without safety protection. Can you imagine yourself stepping on a very common round wooden stick, and there are thorny mountain roads under your feet? Obviously, many people can't accept it.
Therefore, in the Qin and Han Dynasties, some people invented artificial building materials, and more importantly, they created a brick and stone structure system as the theme of the arch and the hills. A certain number of people took the case to dye the pre-existing 9-year-old nuoyu pomelo boat, which was even worse than the old one
We all know that eggs are very fragile in our daily life, but the science teacher said, "you can't crush an egg if you pinch it with your hand." I don't believe it. Can egg shells be made of diamond? Later, I did experiments and looked up the information, and finally found the secret: the shell of the egg is arc-shaped. This arc-shaped design can evenly distribute the force to the whole spherical surface, effectively reducing the local pressure. Scientists just used this principle to make the arch bridge. When it comes to arch bridges, we have to mention Zhaozhou Bridge.
Zhaozhou Bridge, also known as Anji bridge, was built in the Sui Dynasty (AD 605-618), built by the famous craftsman Li Chun. Zhaozhou Bridge has been 1400 years ago. It has experienced 10 floods, 8 wars and many earthquakes. It is not easy to preserve it today. After the rapid development of society, bamboo bridge and rattan bridge appeared. It is usually used on narrow rivers or as temporary crossing.
I have an old photo with Zhaozhou Bridge. The black-and-white old photo has begun to go black, but I believe that the memory of it will exist in my mind like a brand. I love arch bridge, because I love its history, its culture, its charm, and even more because I see the bridge, I will remember the scene that my grandfather used to accompany me to play around. Now, my grandfather's legs are not good, so I can't accompany me to many places. However, I will still leave my shadow and footprints on many bridges.
Among all the bridges, the Golden Gate Bridge in San Francisco is one of the most famous bridges in the world. I experienced it personally in those years. Now I think about it. Walking on the bridge, I can clearly feel the horizontal shaking of the bridge. The vibration amplitude is about one meter. This is not suitable for the first time. What's strange is that there is a glittering bronze statue beside the Golden Gate Bridge, which is the design of the Golden Gate Bridge Strauss, I took a picture with it. After I went there, I found that the Golden Gate Bridge was not gold, but vermilion. It just glittered in the sunlight, so it got its name: Jinmen bridge! There is the same feeling of the Yangtze River Bridge, "more Xijiang stone wall, cut off the clouds and rain in Wushan, high gorge out of Pinghu."
"Look at the Yangtze River and see the Han River, one wave after another to make the Marines.". A few days ago, he walked the Yangtze River Bridge on foot. When he got to the bridge, the greater the amplitude of horizontal shaking. If you throw away these, just standing here, you will have more pride of Wuhan people! Even Chairman Mao, our great revolutionary leader, once said, "a bridge flies between the north and the south, and the natural moat changes into a thoroughfare". It can be seen that the Yangtze River Bridge has contributed so much that as a person of Wuhan, there is no reason why he does not like it?
I hope that one day I can go to all over the world to look for bridge history, bridge culture, appreciate the elegant demeanor of various countries, leave a memorial and bring it back to my grandfather. I want to say with pride, "grandfather! You see, I took your place and walked the road you didn't finish. Body, can not walk, but the soul, is the light that never dies! One day, I will go all the way to make up for your regret
If I have the chance, I will leave my footprints on more bridges as much as possible, leave a delicate photo and leave my precious memories. Grandfather's life has regrets, my life, will not have regrets! Xu Yu
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