The hand-made stone arch bridge is as follows:
Tie two chopsticks together with a rubber band, and pay attention to the two chopsticks being at a ninety-degree angle.
By analogy, two rows of chopstick holders are made and interspersed together to form a bridge deck.
Both sides of the bridge deck are fixed with triangles.
Make two triangular pyramid piers.
The bridge deck is supported on two "piers". Use rubber bands to secure the piers to the bridge deck.
Use four rubber bands to pull the top and both ends of the bridge deck to form a diagonal surface. Beautiful yet load-bearing.
Extended information:
Wooden bridges are the earliest form of bridges. Almost all bridges in my country before the Qin and Han Dynasties were wooden bridges. Such as the earliest single-plank bridges and wooden pillar-beam bridges. Floating bridges appeared around the Shang and Zhou dynasties, and column-arranged wooden beam bridges and outrigger-type wooden beam bridges appeared around the Warring States period.
However, due to the characteristics of wood itself, such as pine, which is easy to rot and is subject to the strength and length of the material, it is not only difficult to build bridges on wide rivers, but also difficult to build strong and durable bridges. , Therefore, in the Southern and Northern Dynasties, they were replaced by wooden and stone mixed or stone bridges.
Stone bridges and brick bridges. Generally speaking, it refers to a bridge whose deck structure is also made of stone or bricks. However, bridges made of pure bricks are very rare. They are usually constructed of a mixture of bricks, wood, or masonry, while stone bridges are more common. During the Spring and Autumn Period and the Warring States Period, stone piers and wooden beam span-type bridges appeared. In the Western Han Dynasty, they further developed into stone pillar-type stone beam bridges. In the Eastern Han Dynasty, single-span stone arch bridges appeared.
The Sui Dynasty created the world's first open-shoulder single-hole curved stone arch bridge, and in the Tang Dynasty Li Zhaode built a boat-shaped pier porous stone beam bridge. The Song Dynasty was a period of vigorous development of large-scale stone bridges, creating stone beam bridges spanning several miles across the intersection of rivers and seas, such as Quanzhou's Luoyang Bridge and Ping'an Bridge, as well as large-scale stone bridges such as Beijing's Lugou Bridge and Suzhou's Baodai Bridge. arch bridge.
Bamboo bridge and rattan bridge. Mainly found in the south, especially in the southwest. Generally it is only used on narrow rivers or as temporary crossings. In the early days, it was mainly a kind of cable bridge. In the Southern and Northern Dynasties, the bamboo zipline bridge was called "Zuo Bridge".
Later, bamboo cable bridges, bamboo pontoon bridges and bamboo plank bridges appeared. Iron bridges, in ancient times, included iron cable bridges and iron pillar bridges. The former belongs to the cable bridge type, which is more common, and appeared around the Tang Dynasty; the latter belongs to the beam bridge type, and is actually a hybrid bridge of wood and iron, which is very rare, with one example seen in Jiangxi.