What is a water bridge, and what is there no water under the bridge

Man Shui Qiao Submersiber Bride

On the secondary highway, cross the river where the height difference between the normal water level and the flood level is large and not navigable, and the flood time is short, and the traffic is allowed to be temporarily interrupted, the bridge elevation can be designed according to the normal water level, and the water flow is allowed to overflow from the bridge deck during the flood. This type of bridge is called a flooded bridge.

It is a choice made by working people in the long-term practice of production and life, in the traditional way of building bridges with stone slabs, to adapt to the traffic of mountain streams. Streams in mountainous areas with a wide rainfall collection area have a huge difference in water levels between sunny days and rainy days, and water conditions vary between dry and flood seasons. The flooded bridge is usually low and low, the stone pillars flow vertically, the stone slabs are tiled, close to the water surface, there are protective strips above, and there are oblique pillars below to protect the solid bridge body, such as centipede insects crossing the stream, so some local villagers describe it"Centipede Bridge"。

Once there is a big flood, the water can overflow over the bridge deck, hence its name. The bridge body is hidden in the flow to dissipate part of the impact of the water, avoiding the danger of trees and weeds caused by flash floods, and its cost is more than other types of bridges"Tall man"Much cheaper, you can build it when you destroy it.

Yongning Manshui Bridge lying at the mouth of Zeya Yuankou, 25 piers of 25-hole stone slab piers, three stone slabs constitute a 1 3-meter-wide bridge deck, with a total length of 107 meters. The stone tablet in the north of the bridge is recorded in the road pavilion, as early as the Ming Dynasty, the bridge was built here on the stream, the higher stone bridge, repeatedly washed away by mountain floods, rebuilt into the low-level flood bridge during the Guangxu period of the Qing Dynasty, also called"Navigating the Bridge"。Until now, it has been washed away by countless mountain floods and baptism, and has not been destroyed.

In the early 90s of the last century, Zeya scenery was developed, and the Manshui Bridge was excavated as a cultural landscape. Yongning Bridge, as a typical example of Manshui Bridge, was listed as a county-level cultural protection unit in 1990.

Zeya's other Manshui Bridge--- Waituyang Bridge, was once cited as an example by the famous bridge expert Mao Yisheng when he described the Manshui Bridge in "Bridge History". It is said in the book "Love Me China, Love Me Zhejiang"."Flooded Bridge": Such as"Wenzhou's outer soil sheep bridge, across Zeya River, a total length of more than 70 meters, with stone pillars as piers, paved with stones, do not set up bridge railings, when the flood comes, let it overflow from the bridge, after the flood, pedestrians are still unimpeded.

China Tourism Scenery"."Bridges"It is also mentioned in a column"Waitu Yang Bridge"It is said to be a low-water flood bridge, with a length of 77 meters, a total of 30 spans, an average span of about 2 5 meters, a bridge deck width of 1 meter, and a height of only 0 9 meters. In order to prevent the bridge from being washed away by floods, the upstream and downstream of the stone piers are supported by stones, and there are large and small pebbles to pave the bottom of the river beside the bridge. Later, the Zeya Reservoir was built, and the Waituyang Bridge was abandoned.

The most typical Manshui Bridge of Zeya that survives now is Yongning Bridge, not far downstream, there are five stone slab bridges--- Yuankou Bridge, which is also a long and large Manshui Bridge.

It seems that you have a wide range of knowledge.

As the name suggests, "bridge.""Of course, it is across the river or ravine, but this bridge deck is made of "water", and the bridge deck is also open to ships, this construction mode is relatively rare, and the following ** clearly shows the characteristics of "water bridge".

The German cross-river bridge was completed in October 2003 and took six years, costing 500 million euros and a total length of 918 meters, connecting the original East Germany and West Germany over the Elbe River. It is located in Magdeburg near Berlin. This photo** was taken at the opening ceremony.

There is no water under the overpass.

The full name of the overpass is "three-dimensional crossing bridge", which refers to the modern bridge established at the intersection of two or more intersecting roads with upper and lower layers and multi-directional non-disturbance, including the sunken tunnel in the three-dimensional crossing project (because the bridge structure will be formed above the main body of the tunnel).

Interchanges are created along with the highway. Urban overpasses are not only greatly convenient for transportation, but also for the scenery of the city. In 1928, the United States first built the first Alfalfa Leaf Highway Crossing Bridge at the intersection of two roads in New Jersey to allow traffic to flow smoothly and pass through the intersection safely.

In 1930, a three-dimensional crossing bridge was built in Chicago. From 1931 to 1935, Sweden successively built three-dimensional crossing bridges in some cities. Since then, urban traffic has begun to move from flat to three-dimensional.

As the city's population has exploded, interchanges have become more important, larger, and more modern and complex bridges, making them an integral part of urban mobility.

The role of the overpass:

Overpass is a good medicine to solve urban traffic congestion, 40 years of reform and opening up, the urban overpass in South Li Chenning from scratch, play a role in alleviating road congestion, make urban traffic smoother. At the same time, the construction history of the overpass is also a microcosm of Nanning's urban development. In recent years, the construction of Nanning's road network has changed with each passing day, and a number of brand-new roads and urban overpasses have been built and put into use.

The mystery of what is not water under the bridge is: overpass.

Overpass refers to the modern bridge established at the intersection of two or more intersecting roads, with upper and lower layers, multi-party surplus and Li directions that do not disturb each other, including the sunken tunnel in the three-dimensional crossing project (because the bridge structure will be formed above the main body of the tunnel). Due to the high cost of construction, construction is usually only done at interchanges between highways, urban arterial roads, or expressways.

The function of the overpass

1. Reduce or eliminate the conflict of vehicles in different directions or types on the original plane, and the limbs can alleviate congestion, save driving time, and enhance driving safety.

2. Some structural types of overpasses can divert the traffic volume in the direction of the main road or even the branch road to a certain extent.

3. Overpasses of some structures can add U-turn ramps to provide a safer U-turn environment for vehicles and do not affect the rapid driving of mainline vehicles.

4. It can reduce or eliminate the probability of mixing motor vehicles, non-motor vehicles, pedestrians, etc., and improve the safety factor of road pants destroying the world.

Overpass.

There is no water under the overpass, because it is an air bridge set up to relieve the pressure of urban roads, and the biggest role of the overpass is to use the method of spatial isolation to eliminate the conflict of road plane cross traffic, so that the straight traffic of the two intersecting roads is unimpeded. To put it bluntly, the flat road is three-dimensional, which can accommodate a larger amount of traffic.

Since the traffic on the overpass can be said to be both simple and complex, each road has a different division of labor, but as long as it goes its own way, there is no problem.

Other interesting brain teasers:

1.What would the world be like if dinosaurs hadn't gone extinct? - Answer: There is no longer Qi Zi who ruins his existence.

2.A squad of paratroopers trained to parachute, and the squad leader said that it would take a few seconds to jump out of the plane to pull the parachute, but the others landed safely, and only one person unfortunately died, why? - Answer: Because of that "stuttering".

3.The tortoise and rabbit are racing again, this time the rabbit is not lazy and playful, but this time the rabbit Gao Beizi still loses, why? - Answer: The turtle set its destination in the sea.

4.Will the unicorn fly to the North Pole become a feast? - Answer: Ice cream.

5.What should I do if I lose my ID card? - Answer: Pick it up.

6.Tom was scolded for splashing ink on the carpet, but he felt wronged, why? - Answer: He doesn't think ink is expensive.

Explanation of the overhead aqueduct of the water bridge. Zhao Shuli, "Sanliwan, Standing Tall and Tall to See Through": "The canal is opened to the village, only a foot deep from the ground, and then connected with a water bridge, and the water of the canal can go along the west mountain root of the lower beach, and all the lower beach can be watered. ”

The word decomposition Explanation of water 水 ǐ A colorless, odorless, transparent liquid: rice. Drop stone wears.

The water is impassable. River: Han Shui.

Xiangshui. River: A common name for lakes and seas. Reservoir.

Water conservancy. It comes naturally (metaphorically, when the conditions are ripe, things will be completed smoothly). Water can carry boats.

Cross mountains and seas. Surrounded by mountains and rivers. Juice:

Pen. Ink Explanation of a bridge Bridge (bridge) á a building erected on the water or in the air for easy passage: bridge.

Pier. Bridge. Bridgehead.

Drawbridge. Trestle. Approach.

Overpass. Shaped like a bridge: heart bypass surgery.

Gu Tong "Joe", Gao Zheng Bridge. The ancient is the same as "correction", positive, whole. Surname.

Number of strokes:; Radical : Wooden.