"The Shape and Structure of the Bridge" Shape and Structure PPT

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"The Shape and Structure of the Bridge" Shape and Structure PPT

Part One: Various Arch Bridges

Observe and compare these arch bridges. What are the similarities and differences between them? What are the advantages of each?

There are bridge arches, bridge decks, and bridge piers

The bridge deck is under the arch

The bridge deck is above the arch

The bridge plate pulls the arch feet, counteracts the outward thrust of the arch, and reduces the burden on the bridge piers. The bridge deck is low and flat, making it easy to pass.

The space under the bridge is high to facilitate the passage of ships.

Bridge shape and structure PPT, part 2 content: long-span steel cable bridge

Steel cables can withstand huge tensile forces, and people use them to build steel cable bridges, which greatly increases the span capacity of the bridge. Observing the structure of the steel cable bridge, what are its salient features?

The Jiangyin Bridge spans the Yangtze River with a span of 1,385 meters, crossing the river in one span. The main steel cables that lift the bridge deck each consist of more than 20,000 steel wires. The steel cable has to withstand a tensile force of 64,000 tons.

Steel cable bridges are mainly composed of steel cables, bridge towers, and bridge decks. Steel cables are the main load-bearing components of the bridge, and bridge towers are the main components that support the steel cables. The salient feature is that it is a suspension bridge from a structural point of view, that is, the bridge deck is suspended by steel cables; from a functional point of view, it has a large span.

Let us simulate building a "steel cable bridge" and experience the tension of the "steel cable".

The two of them pulled the rope at the same time to lift the "bridge". In what direction are we pushing?

Let the rope hanging on the "bridge" hang down more and straighten the rope as much as possible. What changes will you feel in the amount of force?

Think about why the bridge tower is built so high?

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"Shape and Structure of Bridges" Shape and Structure PPT teaching courseware:

"The Shape and Structure of Bridges" Shape and Structure PPT Teaching Courseware Part One: Introduction of New Lessons Who can tell me what a bridge is? Mao Yisheng, a famous bridge expert in my country, said: Bridge is the most common and special building that has existed since ancient times. ... ... ... bridge..

"Shape and Structure of Bridges" Shape and Structure PPT Download:

"The Shape and Structure of Bridges" Shape and Structure PPT Download Part One: Situation Introduction What are the shapes and structures of these bridges? Bridges enable us to cross rivers, canyons, roads and other obstacles and are common structures in our lives. ... ... ... of the bridge..

"Shape and Structure of Bridges" Shape and Structure PPT Courseware 4:

"Shape and Structure of Bridges" Shape and Structure PPT Courseware 4 If we are on this side of the river and want to go to the other side of the river, what methods do you have? What do you think are the disadvantages of this? In ancient times, the most primitive and simplest method was to place a few stones in the middle of the river...

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Update Time: 2024-11-10

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 1 industry PPT template

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