Zhaozhou Bridge is a feature of the first in the world

The world's earliest open-shouldered stone arch bridge, Zhaozhou Bridge, has a history of more than 1,370 years.

This initiative refers to the fact that the Zhaozhou Bridge was built without using piers at all, but only using the principle of arching, and using the arch in the arch to achieve drainage at high tide, which was a unique way to build a bridge at that time.

Zhaozhou Bridge is a stone arch bridge located on the south of Zhao County, Shijiazhuang City, Hebei Province, named after Zhao County's ancient name of Zhaozhou. Locals call it the Big Stone Bridge to distinguish it from the Yongtong Bridge (Small Stone Bridge) outside the west gate of the city. Zhaozhou Bridge was built in the Sui Dynasty, designed and built by the craftsman Li Chun, and later named Anji Bridge by Zhao Xu of Song Zhezong, and took it as the proper name.

Architectural features: The stratum distribution of the bridge site area of Zhaozhou Bridge is stable, and the foundation soil is mainly dense silty clay, with silt and sand interlayer in the middle, which is an ideal place for the construction of this kind of extra-large span single-hole bridge.

The abutment of Zhaozhou Bridge is a low arch foot, a shallow foundation, and a short abutment. It is built directly on natural sand and gravel, and on this basis, the abutment is built with 5 layers of stone strips, each layer is slightly raised from the previous layer.

Zhaozhou Bridge is the earliest and most well-preserved ancient open-shouldered stone arch bridge in the world.

Zhaozhou Bridge, also known as Anji Bridge, is located on the Huhe River in Zhaoxian County, Hebei Province, across the north and south banks of the Huanshui River, because the bridge body is all built with stones, commonly known as "Big Stone Bridge".

Built in 595 A.D. 605 during the Sui Dynasty, designed and built by the famous craftsman Li Chun, it has a history of about 1500 years, and is the earliest and most complete ancient open-shouldered stone arch bridge in the world today.

Zhaozhou Bridge embodies the wisdom and crystallization of the ancient Han working people, and creates a new situation in China's bridge construction.

It was only after about 1397 (some sources suggest that it was about 700) that similar stone arch bridges were built in Europe.

It is not only the first stone arch bridge in China, but also the second stone arch bridge in the world today (the world's first stone arch bridge is the ancient Roman Alcantara Bridge, which was built by Lacer in 98 105 AD.

In the long years, although it has been hit by countless floods, wind and rain, erosion of ice, snow and frost and 8 times, it is safe and sound, standing majestically on the Qingshui River.

The design of Zhaozhou Bridge is a pioneering initiative because it is the first open-shoulder structure in the history of bridges in the world, and on the other hand, it is based on coarse sand to improve the load-bearing strength of the bridge to ensure the stability of the bridge.

The reasonable location of Zhaozhou Bridge is an important reason why it has become a thousand-year-old bridge, and Li Chun chose the foundation site of Zhaozhou Bridge in the coarse sand of the river, because the coarse sand can improve the load-bearing strength of the bridge to ensure the stability of the bridge.

Modern survey shows that the stratum distribution of the bridge site area of Zhaozhou Bridge is stable, the foundation soil is mainly dense silty clay, and there are silt and sand interlayers in the middle, which is an ideal place for building this kind of extra-large span single-hole bridge.

According to the laboratory analysis, the basic bearing capacity of this soil layer is 34 tons of square meters, and the clay layer is less compressible, and it will not produce sand liquefaction when it is **, which is a good natural foundation. Its stable foundation is one of the important reasons why this ancient bridge has been able to withstand many frontal earthquakes.

1. The world-famous Zhaozhou Bridge is the world's oldest existing single-hole open shoulder stone arch bridge with the largest span and the most complete preservation, it is beautiful and majestic in appearance, and the construction technology is unique, and its "open shoulder arch" structure form is a pioneering achievement of Shenhuai in the history of bridges in the world.

2. Zhaozhou Bridge is a world-famous, beautiful stone arch bridge, also known as Anji Bridge. The Zhaozhou Bridge is very majestic. Its "open shoulder arch" structure is a pioneering feat in the history of bridge construction, occupies an important position in the history of bridge building in China, and has a profound impact on future generations of bridge construction around the world.

Zhaozhou Bridge is a famous bridge in the architectural history of the Tang Dynasty in China, and its two major characteristics are "Crouching Tiger Tranquility" and "Arching Back and Forth".

"Crouching Tiger-style tranquility" refers to the fact that the bridge deck of Zhaozhou Bridge presents a slightly rising curve, like a hidden crouching tiger lying quietly. This design not only makes the bridge deck look more stable and symmetrical, but also effectively alleviates the bumps and bumps when vehicles and pedestrians pass on the road. At the same time, this design also shows the emotional and architectural aesthetic pursuit of the people on the shore of Daming Lake, making the bridge a bridge with the extraction and deepening of Suiji's human touch.

"Arch back and forth" means that Zhaozhou Bridge adopts a multi-arch structure, and multiple arches are evenly distributed between the piers, which ensures the overall solidity of the bridge body. At the same time, each arch can withstand different loads, which prevents the entire bridge from collapsing if there is a single fracture. In addition, this design also reduces the stress on all parts of the bridge and prolongs the service life of the Zhaozhou Bridge.

The characteristics of this bridge are:

1. The whole bridge has only one large arch, which is meters long, which can be regarded as the longest stone arch in the world at that time. The bridge hole is not an ordinary semicircle, but resembles a bow, so that the road above the arch has no steep slope, which is convenient for cars to get up and down.

2. On the shoulders of the large arch, there are two small arches each. This is a creative design, which not only saves stones and reduces the weight of the bridge, but also increases the amount of water passing through the bridge when the river is surging, and reduces the impact of floods on the bridge. At the same time, the arch is added to the arch, and the bridge body is also more beautiful.

3. The big arch is made up of 28 arch circles, just like so many bows of the same shape together, making an arc-shaped bridge hole. Each arch ring can independently support the weight above, and if one is broken, the others will not be affected.

Fourth, the structure of the whole bridge is symmetrical, and the surrounding scenery is very harmonious; The stone railings and slabs on the Zaoling Bridge are also carved in a simple and beautiful way. Zhang Ling of the Tang Dynasty said that looking at this bridge from a distance is like "the first moon rises out of the clouds, and the rainbow leads the stream". The high technical level and immortal artistic value of Zhaozhou Bridge fully demonstrate the wisdom and strength of China's working people.

The design concept and craftsmanship of Zhaozhou Bridge are not only second to none in China's ancient bridges, according to the research of the world's bridges, such open-shouldered arch bridges, Ou Zheng Debate Xiaozhou only appeared in the middle of the 19th century, more than 1,200 years later than China.