Bridge
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The document discusses different types of bridges including suspension bridges, arch bridges, beam bridges, and cable stay bridges. Key details include: - Suspension bridges suspend cables from towers to support most of the weight and distribute forces into the earth. The Golden Gate Bridge is an example. - Arch bridges distribute weight onto two supports through their semicircular shape. The Montgomery Meigs bridge had the longest masonry arch at 220 feet when completed in 1863. - Beam bridges use horizontal beams supported at each end to support weight, causing bending that requires steel reinforcement. The longest is the Lake Pontchartrain Causeway at 24 miles. - Cable stay bridges use cables in a radial or parallel
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Bridges
Bridges have fascinated humans for millennia, with the earliest known bridge built on the Nile around 2650 BC. Suspension bridges first used cables to enable people to walk across rivers, while pontoon bridges provided a floating solution. During the Renaissance, Leonardo da Vinci studied bridge design and material strength. In the 19th century, iron and steel bridges rose to prominence, while reinforced concrete later became a significant building material. Common modern bridge types include beam, arch, suspension, and cantilever bridges.
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The document discusses different types of bridges including suspension bridges, arch bridges, beam bridges, and cable stay bridges. Key points include:
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The document is a seminar report on cable suspension bridges submitted by Gaurav Rawat to fulfill requirements for a Bachelor of Technology degree in Civil Engineering. It provides an introduction to the topic, discusses the structural elements and components of suspension bridges, and covers various types of suspension bridges. It also examines the manufacturing process and design, loads on suspension bridges, failures that can occur, and pros and cons of this bridge type. The report was approved by the seminar guide, Dr. Jyoti Prasad, and acknowledges their guidance throughout the project.
Bridgething1
The document discusses different types of bridges throughout history. It begins by explaining how arch bridges, one of the oldest designs, use curved structures for support and were originally built from stone. Beam bridges are also very common as they are inexpensive and strong over short distances, though not as aesthetically pleasing. Cantilever bridges extend beams out over the water and can support more weight than beam bridges. Cable-stayed bridges are similar to suspension bridges but are cheaper to construct and are aesthetically pleasing and modern designs.
Suspension bridge (modern const. tech)
The Akashi Kaikyo Bridge in Japan is the world's longest suspension bridge. It spans the Akashi Strait and connects Kobe to Awaji Island. When completed in 1998, it held the records for highest and longest suspension bridges at 280m tall and 1991m long. The bridge cost $4.3 billion to build and took over 10 years to construct using over 1 million cubic meters of concrete and 81,000 tons of steel. New techniques had to be developed to build the deep foundations in open sea conditions.
Bridge and its types
The document discusses the history and evolution of suspension bridges. It notes that the first modern suspension bridge was Jacob's Creek Bridge built in 1801 in Pennsylvania, which incorporated key components like a suspended deck. Cable-stayed bridges were also used historically but grew more prominent in the 20th century with new materials. Suspension bridges have evolved over centuries from simple walkways suspended by vines to modern structures with steel cables, towers, and stiffening trusses to stabilize the deck.
Introductiontobridges 150423001518-conversion-gate02
This document provides an overview of different types of bridges. It begins by describing the basic components and forces in a simple beam bridge. It then discusses other common bridge types like arch, suspension, truss, and cable-stayed bridges. For each type, it explains the basic structure and how forces are distributed. The document concludes by noting that suspension bridges can span the longest distances, while beam bridges are the simplest and most inexpensive. Overall, the document serves as a high-level introduction to common bridge designs and engineering concepts.
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Introductiontobridges 150423001518-conversion-gate02
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This document discusses different types of bridges including cable-stayed bridges, arch bridges, suspension bridges, beam bridges, and provides examples of each. It summarizes the key features of each bridge type and highlights some famous bridges as examples including the Golden Gate Bridge, Lupu Bridge, and Rio–Antirrio Bridge. It also describes two simple bridges the author made as a child out of paper/paper clip and clay/cups/sticks.
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The document discusses different types of bridges:
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Bridge
- 2. For my first bridge I took a piece of paper and folded the edges to the middle. Next I took the sides and folded those straight up. Finally I took the middle and folded it straight up. On the ends I put the paper clips.
- 3. I could put 50 pennies and 4 rows of staples.
- 4. Suspension bridges used to be made of twisted grass but usual though twisted grass does not last long. Today only one bridge made from twisted grass is still there. It is in Andes. Measuring 90 ft or 27 meters Golden gate bridge. The golden gate bridge is built in San Fran Cisco. It was built there because people wanted a way across the water with out having to take a ferry. The bridge was final built and open for use on may 27 1937 Suspension Bridges suspend cables by towers that support a majority of weight. Weight pushes down on the suspension bridges deck then the compressions travels up the cables or chains. It then goes into the 4 tower and is dissipated directly into the earth.
- 5. Arch bridges The semicircular shape distributes weight onto two componets of the bridge that directly take on all the pressure. The curve of the arch thought allow it to dispute the force outward greatly reduces the effects of tension on the underside of the arch. Mongomery Meigs The bridge was completed in 1863 and was the longest masonary arch in the world. It held for a record 40 years. The main arch has a span of 220 feet. And is 57 ft above a creek. This bridge was designed as a part of the Washington Aqudect. Fun fact These bridges are a popular choice because they offer all the advantages of a suspension bridge just that they cost less,are faster to build, require less steel cables and incorporate more precast concrete 5
- 6. Beam bridge The beam bridge is very simple. To build a beam bridge you need horizontal structure and two supports. One at each end. Although the on the beam bridge the bridge endures both tension and compress ion. This is caused by adding weight it causes the bridge to bend so you need steel to handle the load. Is the longest bridge in the world. It on the Lake Pontchartain Causeway in Louisiana. It is aproximently 24 miles long and is supported by more then 9,00 pilings. This lake was built so that travlers would not have to go all the way around the lake. 6
- 7. Cable stay bridges The tower of cable-stay bridges are responsible for dealing with compressional forces. The cables attached to the rodeway in various ways. In a radial patter cables extend from several points onto the road to a single point at a tower. Like a bunch of fishing lines attached to one pole. In a parrel patter the cables attach to both the radway and the towr at several points. The longest cable stay bridge is the Cooper River Bridge in Charslton south Carolina. It open in the summer of 2005 and is 2.5 miles long and 186 ft above a river. It was built because the town of River Creek needed to cross the Cooper River. 7
- 8. I chosse an arch bridge. I chose this because it holds up well and has a very pretty look to it. I used white clay to make the platform and tooth picks as the railings. Cups for the support forms and popsicle sticks on the side to help keep its form. i could put all the pennies and staples on the bridge and it did not budge. 8
- 9. My bridge 9
- 10. This bridge is perfect it alows people to walk on and enjoy a walk on the beautiful bridge on there way to a park. 10
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