What is the strongest bridge in terms of its shape?

1. Under the action of vertical load, the vertical reaction force and horizontal thrust are generated at the supporting places at both ends of the arch bridge, and it is the horizontal thrust that greatly reduces the bending moment in the span and increases the spanning capacity.

2. The ultimate span of the concrete arch is about 500m, and the steel arch can reach 1200m.

3. There are T-shaped rigid frame bridges and continuous rigid frame bridges, the main disadvantage of T-shaped rigid frame bridges is that there are more expansion joints on the bridge deck, which is not conducive to high-speed driving, and the continuous rigid frame girder is continuous and seamless, and there is no system conversion during smooth construction, and the maximum span in China has reached 270m Humen Bridge auxiliary channel bridge.

4. The composite system bridge has a beam-arch composite system, a tie arch truss arch, and a multi-span arch beam structure. Beam-rigid-frame composite system, such as T-shaped rigid-frame bridge, etc.

5. Truss bridge, with a long hollow truss made of steel or concrete as a beam, to make the bridge light and strong, the bridge built by this method is called a box girder bridge.

6. The arch bridge bears the stress of the main span by pushing the arch body to the ground at both ends of the bridge, and the modern arch bridge usually adopts a lightweight and open structure.

Chinese stone arch bridge.

It is an outstanding representative of Chinese bridges. For thousands of years, stone arch bridges have spread all over the mountains and rivers of the motherland, and are an important part of China's ancient bridge culture.

Zhaozhou Bridge in China.

It lasted 1400 years and can still be used today, which fully shows that its design and construction are in line with scientific principles.

Which shape of bridge is the strongest? Put the hydraulic press under the test, no wonder many bridges look like this!

1. Wuhan Yangtze River Bridge.

Wuhan Yangtze River Bridge is located between Snake Mountain and Hanyang Guishan in Wuchang District, Wuhan City, Hubei Province, is the first bridge on the Yangtze River, and also the first road and railway dual-purpose bridge built on the Yangtze River after the founding of New China, known as the "first bridge on the Yangtze River". The Wuhan Yangtze River Bridge has become a landmark building in Wuhan since its completion.

2. Nanjing Yangtze River Bridge.

Nanjing Yangtze River Bridge is located in Nanjing Gulou District Xiaguan and Pukou District between Qiaobei, is the first double-decker railway and highway bridge on the Yangtze River designed and built by China, which is of great significance in the history of bridges in China and the history of bridges in the world, is an important achievement of China's economic construction in the 60s of the 20th century, an important milestone in China's bridge construction, has great economic significance, political significance and strategic significance, and is known as the "bridge for energy".

3. Qingdao Jiaozhou Bay Bridge.

Qingdao Jiaozhou Bay Bridge is a large sea-crossing bridge across Jiaozhou Bay, the bridge starts from Haier Road, Laoshan District, Qingdao City in the east, passes through Hongdao, and reaches Huangdao District of Qingdao City in the west. With a total length of kilometers and an investment of nearly 10 billion yuan, the bridge was officially put into operation in June 2011.

China's famous bridges include four ancient bridges and eight contemporary sea-crossing bridges, the most common of which are Chaozhou Guangji Bridge, Hebei Zhaozhou Bridge, Quanzhou Luoyang Bridge, Beijing Lugou Bridge, Zhuhai-Macao Bridge, Xiamen Bridge, Haicang Bridge, Pingtan Strait Road and Railway Dual-purpose Bridge, Donghai Bridge, Jiashao Bridge and so on. Guangji Bridge, commonly known as Xiangzi Bridge, outside the east gate of the ancient city of Chaozhou, across the Hanjiang River, living in Fujian, Guangdong traffic law, with the unique style of "eighteen shuttle boats twenty-four continents", and Zhaozhou Bridge, Luoyang Bridge, Lugou Bridge and so on live in the list of China's famous bridges, by the famous bridge expert Mao Yisheng praised as "the world's earliest opening and closing bridge", is now a national key cultural relics protection unit.

Zhaozhou Bridge, Luoyang Bridge, Guangji Bridge .......

The shape and structure of a bridge are two different concepts. Shape refers to the shape of the outer contour of the bridge, while structure refers to the internal architectural structure of the bridge. The differences in shape and structure are mainly due to the following points:

1.The shape of the bridge is mainly affected by the physical conditions of the rivers and ditches that the bridge crosses, and is also affected by aesthetics and environmental protection. The structure of the bridge is designed to bear the weight and ensure the safety of the passage and other functional requirements.

2.The visual experience and safety are different: the shape design of the bridge mainly considers the visual effect and aesthetics, while the structural design of the bridge focuses on the robustness and safety of the structure.

3.Different construction processes and technical requirements: the shape design of the bridge can be in different colors, materials and shapes, while the structural design of the bridge must follow the relevant engineering requirements and technical standards to ensure the quality and safety of the construction.

In the construction of real wax slag, the shape and structure of the bridge are often interrelated, and the two need to be comprehensively considered and coordinated. For the designer, the shape and structure of the bridge should be coordinated according to the specific construction needs and environmental characteristics to meet various social, economic and cultural needs.

Beam bridge: It is composed of beams and piers, which are the main load-bearing structures.

Arch bridge: cable bridge: pontoon bridge shouts: It is a temporary bridge that uses the buoyancy of water to carry the bridge deck, mainly used in the military or on construction sites.

Girder bridges, arch bridges, cable-stayed bridges, suspension bridges, viaducts, composite system bridges.

The shape of the bridge.

For example, if a bridge is arched, it is called an arch bridge, and this is the shape of the bridge right.

The structure of the bridge is to see what a bridge is made of, for example, a bridge is composed of many steel beams, it can be said that the structure of the bridge is a beam bridge, such as simply supported beams, continuous beams, etc.

The classification of bridges can be found below:

There are four main types of long-span bridges: arch bridges, suspension bridges, cable-stayed bridges, and cooperative system bridges;

Small and medium-span bridges mainly include: arch bridges, beam bridges, arch beam composite system bridges, and steel truss bridges.

Among them, the beam bridge is divided into: simply supported beam bridge, continuous beam bridge, cantilever beam bridge, rigid frame bridge and so on.

Arch bridges are divided into simple arch bridges, truss arch bridges, and even arch bridges.

The beam-arch composite system bridge is divided into: upper bearing bridge, middle bearing bridge (commonly known as flying bird type), and lower bearing type (commonly known as tie arch).

There are also various combinations of bridge types and various uncommon strange bridges, such as: lift bridges, belt bridges and so on.

A bridge is a large structure used to cross obstacles. Specifically, it is used to connect transportation routes (such as roads, railways, waterways, etc.) or other facilities.

A genus (e.g., pipeline, cable, etc.) that crosses a natural obstacle (e.g., river, strait, canyon, etc.) or an artificial obstacle (highway, railway line). The purpose of a bridge is to allow people, vehicles, trains, or ships to pass through the barrier. The bridge can be crossed on both sides of the valley river or strait, or it can be raised on the ground and cross the river or road below, so that the traffic below can flow unimpeded.

The "bridge" was originally a tall tree (see arbor), because it was tall enough to be cut down and long enough to be placed on the surface of the river, and it could be connected to two banks, that is, a single-plank bridge. The hoisting bridge gives space for large ships to pass through. There are also literary works, films, gymnastics terminology and skateboarding terminology that are named after it.

Bridge is an overhead building with the capacity to bear load, the main role is for railways, highways, channels, pipelines and people to cross rivers, valleys or other obstacles, is an important part of the transportation line.

The composition of the bridge is divided into:

1. Superstructure, extremely bridge collapse structure;

2. The substructure, including piers, abutments and foundations;

3. a bearing; 4. Ancillary facilities, including bridge deck pavement, drainage and waterproof system, railings (or anti-collision railings), expansion joints and lighting, etc.

Classification: 1. According to the use, highway bridges, railway bridges, highway and railway dual-purpose bridges, agricultural bridges, pedestrian bridges, water transport bridges and pipeline bridges, etc.;

2. According to the length and span, extra-large bridges, large bridges, medium bridges, small bridges and culverts;

3. Practical building materials according to the beam (arch) span, wooden bridge, masonry bridge, reinforced concrete bridge, prestressed concrete bridge, steel bridge and combined beam bridge;

4. According to the nature of crossing obstacles, cross-river bridges, cross-line bridges (overpasses) and viaducts;

5, according to the carriageway of the superstructure, the upper bearing type, the middle bearing type and the lower bearing type;

6. According to whether it is fixed, fixed bridge, movable bridge and pontoon bridge;

7. According to the stress situation, beam bridges, arch bridges, steel frame bridges, suspension bridges, cable-stayed bridges and composite bridges.

Truss bridges: There are strong beams with supports at each end of the beams. The first bridges were built according to this concept.

They are nothing more than tree trunks or stones that straddle between the banks of a river. Modern truss bridges are usually made of long hollow trusses made of steel or concrete. This makes the bridge light and strong.

Bridges built using this method are called box girder bridges.

Advantages: It is very convenient to manufacture and erect, widely used, and occupies a large proportion in bridge construction.

Disadvantages: The structure of truss girders is complex, manufacturing is labor-intensive, and is mostly used for large-span bridges.

Arch bridge: The main span is stressed by the arched bridge body pushing against the ground at both ends of the bridge. Modern arch bridges are usually lightweight, open in structure.

Advantages: large spanning ability; Compared with steel bridges and reinforced concrete girder bridges, a lot of steel and cement can be saved; It can be durable, and the maintenance and repair costs are low; Beautiful appearance; The structure is relatively simple, which is conducive to wide adoption.

Disadvantages: Since it is a thrust structure, it has high requirements for the foundation; For the porous continuous arch bridge, in order to prevent the damage of one hole and affect the whole bridge, special measures should be taken or a one-way thrust pier should be set up to bear the unbalanced thrust, which increased the project cost; Repair the arch bridge in the plain area, due to the large building height, the wiring project at both ends and the longitudinal slope of the bridge deck increase, which is extremely unfavorable to traffic.

Cable-stayed bridges: There are steel cables tied to the bridge columns. The steel cables support the weight of the bridge deck and transfer the weight to the bridge columns, which are subjected to enormous pressure.

Advantage 1) The amount of steel and concrete is relatively low. 2) The internal force of the main beam can be adjusted, so that the internal force distribution is uniform and reasonable, and the main beam can be made into an equal section beam, which is convenient for manufacturing and installation. 3) The horizontal tensile force of the cable-stayed cable is equivalent to the pre-pressure applied to the concrete beam, which helps to improve the crack resistance of the beam and gives full play to the characteristics of high-strength materials.

4) The structure is light and the applicability is strong. 5) The building height is small, which can fully meet the requirements of clearance and aesthetics under the bridge, and can reduce the height of the approach road fill. 6) The vertical stiffness and torsional stiffness are strong, the wind stability is good, and the amount of steel used is small.

7) It is convenient to adopt the cantilever method of construction and erection, and the construction is safe and reliable.

Disadvantages: complex calculation, many high-altitude operations in construction, and strict technical requirements.

I hope it can help you, please feel free to ask (*

According to whether it can be moved, it is divided into fixed bridge, open bridge and pontoon bridge.

According to the structure, there are arch bridges, suspension bridges, cable-stayed bridges, and simply supported beam bridges.

Specific features: 1) Open bridge: refers to the bridge whose superstructure can be opened and closed by vertical rotation, horizontal rotation, and lifting for navigational needs.

2) Pontoon: a bridge that floats on the water with a boat or pontoon instead of a pier. The military pontoon bridge assembled by the army with standard equipment is called the boat bridge.

3) Arch bridge: It is a bridge with the arch as the main load-bearing member of the superstructure in the vertical plane. If a surface is formed in the powder layer inside the container that can withstand the pressure of the powder above without transmitting this pressure to the bottom, this surface is called an arch bridge.

The arch bridge is a curved surface that is raised upwards, and its maximum principal stress acts along the surface of the arch bridge, and the minimum principal stress along the vertical direction of the arch bridge is zero.

4) Suspension bridge, also known as suspension bridge, is composed of suspension cables, bridge towers, booms, anchor ingots, stiffening beams and bridge deck systems. The spanning capacity of the suspension bridge is the largest of the various bridge systems. According to the stiffness of the stiffening beam, the suspension bridge can be divided into two types: flexible and rigid.

5) Cable-stayed bridge: also known as diagonally tensioned bridge, is a kind of bridge that pulls the main beam directly on the bridge tower with many cables, and is a structural system that is composed of a compressed tower, a tensile cable and a bending beam. The cable-stayed bridge is composed of pylons, main beams, and cable-stayed cables.

6) Simply supported girder bridge: a girder bridge with both ends supported on a movable support and a hinged support as the main load-bearing structure. It belongs to a statically definite structure. According to the different materials used, it is divided into concrete bridge, reinforced concrete bridge, wooden bridge, stone bridge and brick bridge.