What's the World's Longest Bridge?
20 rows · Sep 18, · This is a list of the world's longest bridges that are more than 3 kilometers ( mi) in. 10 rows · Mar 14, · The bridge, under construction since , is now the longest sea crossing in the world. 7.
Sorry, you do not have permission to ask a question, You must log in to ask a question. Become VIP Member. Do you need to remove the ads? It is the longest bridge in the world with a main span of m between two flexible steel arches and rigid girders.
Rongjiang Bridge is considered the most challenging long-span bridge that has ever been constructed for a high-speed railway network. This is because of the innumerable construction problems faced, the scale of the project, and the need for highly specialized components. In this article, we discuss the structural elements of the Rongjiang Bridge, key factors associated with its design, foundation details, and the construction procedure.
The structural components of the What bridge is the longest bridge in the world Bridge are the main girder, gusset plates, and the deck system.
The main girder is made up of four continuous spans of steel truss girders and two components of steel arches. The approach bridges are made up of prestressed concrete beams of 32 m in length and constructed on simple supports. The steel truss girder weighs approximately 15, tons and the single beam weighs about 70 tons. QqE steel was utilized in the main bridge for all what bridge is the longest bridge in the world steel components, which are thicker than 40 mm.
In addition, QqD steel was used for the more slender steel components, like the supporting frameworks. Concrete of strength grades C30, C35, and C40 were chosen, for pile foundations, piers, and pile caps, respectively. Two components of N-type triangular truss were adopted with vertical bars for the construction of the main girder.
The main trusses were separated by 15 m from center to center with an internode distance of 11 m. A total of 20 and 10 internodes were provided in the middle and side span, respectively. The height of the steel truss what are the risks of spread betting restricted to 15 m and 30 m in the middle span and at the supports, respectively.
Steel arches were introduced on the main girder to expand the range of the main bridge. The steel arch was in the shape of a parabola to provide greater flexibility to the main bridge. The span and height of the flexible arch were m and 44 m, respectively. The main truss beam consisted of three members named the lower chord, the upper chord, and the diagonal chord.
These members were joined with the gusset plates by high-strength bolts. The box shape and H-shaped cross-sections were adopted for the truss members and for the connecting rods, respectively. The gusset plates were utilized in most parts of the Rongjiang Bridge. One of the basic gusset plates was named E, which is chosen to represent the properties of the gusset plate in detail in this article. The E gusset plate was provided at the junction between the flexible arch and the steel truss girder.
The stress condition on the E gusset plate is complex as a total of ten members were connected to it. The entire E11 gusset plate comprises of five types of steel plates. The deck arrangement of the Rongjiang Bridge is a ballasted track. Who you know or what you know was provided for the first time for any high-speed railway network in the world.
The track was made out of three sections, specifically, ballast bed, cushion and steel deck. The center to center spacing between the two tracks is 4. A light cushion was provided between the steel deck and the ballast bed. The CAP high adhesion layer was used to make the lightest possible cushion. The waterproofing for the cushion was provided using the MMA system.
A layer of C40 polypropylene fiber mesh concrete with a thickness of 38 mm and 12 mm thickness of AP high adhesion pad were provided for CAP high adhesion lightweight, protective layer. The steel deck was connected to the lower chord with a spacing of 11 m between the transverse beams to provide more rigidity. The connection was provided in such a way that at each main transverse connection, three minor connections were provided at a spacing of 2.
An inverted T-shaped cross-section was chosen for the transverse beam connection. Also, an orthotropic bridge deck system was provided by arranging the U-type ribs and I-type ribs on the deck panel of the bridge. The Rongjiang Bridge was designed for a high-speed what bridge is the longest bridge in the world network. The following points describe the design criteria adopted for the Rongjiang Bridge:. Pile foundation was adopted for the construction of the Rongjiang Bridge.
A total of three what can you do with overripe bananas of steel support pier were provided, namely middle span pier support, side span pier support, and auxiliary pier support. The design capacities of middle span pier support and side span pier support are 10, tons and tons, respectively. Whereas for auxiliary pier support, the design capacity is tons. A hollow pier was adopted for construction due to its excellent performance in dynamic loading for high-speed railways.
The maximum height of the bridge pier is 45 m. A circular cross-section was adopted for the pile foundation, and two types of piles having diameters of 2 m and 2. The maximum depth of the pile foundation is m. V-shaped stiffening chords how to calculate effective nuclear charge provided for the main bridge to form a continuous steel girder.
Also, flexible steel arches were used to connect the other spans of the bridge. What bridge is the longest bridge in the world, the connection of flexible steel arches with the steel truss girder proved to be a challenging task. To overcome the connection problems, the scheme of making the erection of the continuous steel truss girder with flexible arch on various levels and implementing the staged closure was prepared.
In this manner, the continuous steel truss beam was constructed before constructing the flexible steel arch structures. Four dewing derrick cranes were used to construct the steel truss girder on four different platforms. The cranes were provided at such a location that one crane was able to finish the task up to the mid-span of the two main spans.
The flexible steel arches were successively raised by two dewing derrick cranes from the how to change an oxygen tank edge of the two flexible arch ribs to the focal point of the main bridge. The butt joint was provided at the intermediate pier to mark the closing operation of the derrick cranes. The construction of the Rongjiang Bridge was finished by following the above steps.
The foundation type for the Rongjiang Bridge is the pile foundation, and the diameters of piles are divided into two: 2. The maximum depth of the pile is m. In addition, QqD steel was used for the more slender steel components, such as, the supporting frameworks. Concrete of different strength grades was how to underline a letter in an email address, such as C30, C35, and C40 concrete for the pile foundations, for the piers, and for the pile caps, respectively.
The connection was made by creating the erection of the continuous steel truss girder with a flexible arch on various levels and by implementing the staged closure. In this manner, the continuous steel truss beam was constructed prior to constructing the flexible steel arch structures. Join Join TheConstructor to ask questions, answer questions, write articles, and connect with other people.
Have an account? Log in Now. Join for free or log in to continue reading Remember Me! Don't have account, Join Here. Forgot Password Lost your password? Ask A Question. Model of Rongjiang Bridge. Contents: 1. Structural Components of the Rongjiang Bridge 1.
Design Criteria of the Rongjiang Bridge 3. Foundation Details of the Rongjiang Bridge 4. Construction Procedures FAQs. Main span of the Rongjiang Bridge. Special steel truss girder used for the vibration absorption. Construction of continuous steel truss girder. What is the design speed of trains passing through the Rongjiang Bridge? What is the type of foundation provided for the Rongjiang Bridge? What is the grade of steel and concrete used in the construction of the Rongjiang Bridge?
How was the connection made between the flexible steel arches and the steel truss girder of the Rongjiang Bridge? Previous article. Related Posts.
2 days ago · The Rongjiang Bridge is a part of the Xiamen-Shenzhen high-speed railway route constructed in the Jieyang City of Guangdong Province, China. It is the longest bridge in the world with a main span of m between two flexible steel arches and rigid girders. Rongjiang Bridge is considered the most challenging long-span bridge that has [ ]. Mar 01, · The world's longest bridge is the Danyang–Kunshan Grand Bridge in China, part of the Beijing-Shanghai High-Speed Railway. The bridge, which opened in .
A bridge is a structure built to provide passage over a physical obstacle. The obstacle can be anything valley, waterbody, or road that is usually dangerous to cross otherwise.
Different types of bridges serve different purposes: their designs vary depending on the nature of the terrain, function of the structure, and material used to build the structure. The earliest bridge — Arkadiko Bridge — dates back to the 13th century BC. It is the oldest known arch bridge still in use. It was specifically constructed for use by chariots.
Today, bridges can be as long as kilometers and bear extremely heavy loads, thanks to advances in engineering design and materials science. Below, we have listed the 12 longest bridges in the world sorted by their full length above water or land. Length: 35, meters Country: China Completed in: Because of this, travel time between Tianjin and Beijing has been decreased by more than half, from 70 minutes to 30 minutes. Length: 36, meters Country: United States Completed in: The Manchac Swamp Bridge is a twin concrete trestle bridge in Louisiana.
It is the longest bridge on the Interstate Highway System. While its daily traffic is far less compared to other busier bridges, this structure remains an engineering feat in an age where construction limits are being pushed across the world.
Length: 37, meters Country: China Completed in: Line 1 of Wuhan Metro is an elevated metro line in Hubei. It is the first metro line in China to have been wrongly referred to as a light rail system in Chinese terminology because it is elevated. Satellite view. Length: 38, meters Country: United States Completed in: southbound , northbound. The causeway is a fixed link containing two parallel bridges crossing Lake Pontchartrain.
The northern terminus of the causeway is at Mandeville, Louisiana. The southern terminus is in Metairie, Louisiana, a part of the New Orleans metropolitan area. The two bridges are supported by 9, concrete pillars. In fact, babies have been born on this bridge because their mothers failed to make it to the hospital on the other side. A map of Beijing Grand Bridge.
Length: 48, meters Country: China Completed in: The longest span of the bridge is 44 meters. Length: 48, meters Country: Kuwait Completed in: It decreases the distance between Kuwait City and Subiyah in the northern part of Kuwait and shortens the traveling time from 1.
The causeway is integrated with smart transportation monitoring systems that enable traffic monitoring, tracking of emergency vehicles, recording trip duration, and reporting of traffic violations. Length: 54, meters Country: Thailand Completed in: The construction of the highway started in and lasted for 5 years. It took nearly 1,, cubic meters of concrete to build the bridge. It was built to solve one of the main problems of Bangkok city: traffic congestion. Although traffic on the highway is chargeable, Bang Na has remained quite demanding for the drivers since opening.
And since the stunning panorama opens onto the city from the main road, it has attracted numerous tourists in the last 2 decades. Weinan North Railway Station. Length: 79, meters Country: China Completed in: Length: , meters Country: China Completed in: It has a total of 3, piers designed to withstand large earthquakes.
The soil around the pile is silty clay, clay, silty soil, and silty sand. The pile end is situated in the silty clay and silty soil. The bridge requires only To shorten the construction period and avoid several individual structures for crossing railways and roads, the bridge features the elevated track design.
It contains 32 meter long tubular girders , each weighing tons. Length: , meters Country: Taiwan Completed in: Changhua—Kaohsiung Viaduct is the second-longest bridge in the world.
It is one of the largest and most challenging infrastructure projects in the world to date. The bridge can survive fault movements and large earthquakes without serious damage. The primary objective of this bridge is to solve the railway traffic in the area.
Danyang—Kunshan Grand Bridge was opened in June It took 4 years to build the structure with a workforce consisting of 10, people.
The bridge is built on top of 2, pillars and , tons of steel structure. A large section of the bridge 9 km spans over the Yangcheng Lake. Moreover, it is strong enough to withstand direct impacts from naval vessels and natural disasters such as magnitude 8 earthquake and typhoons.
As you may have noticed, all these bridges are primarily used to transport people and goods in a way that would not be possible or extremely difficult otherwise. Also, they all are built from high-strength concrete and steel.
However, there are some bridges built for different purposes or are made of different materials. U Bein Bridge is one of the oldest and longest teakwood bridge in the world.
The bridge was built in by wood gathered from the royal palace in Inwa. It has a total of 1, pillars stretched out of the water, some of which have been dangerously decayed and replaced with concrete.
Hongyagu glass suspension bridge spans the gap between two cliffs in the Hongyagu Scenic Area. It was opened in , marking the 2. With the greatest transparency and a meter span over a vertical drop of meters, the bridge can carry pedestrians at one time.
The structure was built in It is 4 times longer than the Brooklyn Bridge and has the longest central span 1, meters of any suspension bridge. The bridge features a dual-hinged stiffening girder system that allows the structure to withstand magnitude 8.
Varun Kumar is a professional science and technology journalist and a big fan of AI, machines, and space exploration. To find out about his latest projects, feel free to directly email him at [email protected]. Lake Pontchartrain Causeway Satellite view Length: 38, meters Country: United States Completed in: southbound , northbound The causeway is a fixed link containing two parallel bridges crossing Lake Pontchartrain. The overall project is comprised of two parts: Main Link: connects Kuwait City with the future Silk City Doha Link: connects Kuwait City Doha The causeway is integrated with smart transportation monitoring systems that enable traffic monitoring, tracking of emergency vehicles, recording trip duration, and reporting of traffic violations.
Bonus As you may have noticed, all these bridges are primarily used to transport people and goods in a way that would not be possible or extremely difficult otherwise. Read: 15 Tallest Buildings In The World The bridge features a dual-hinged stiffening girder system that allows the structure to withstand magnitude 8. Related articles. Dec General Knowledge. Nov