"The Shape and Structure of Bridges" Shape and Structure PPT Teaching Courseware

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"The Shape and Structure of Bridges" Shape and Structure PPT Teaching Courseware

Part 1: Importing new lessons

Can anyone tell me what a bridge is? Mao Yisheng, a famous bridge expert in my country, once said: "Bridges are the most common and special buildings that have existed since ancient times."

The shape and structure of bridge PPT, part 2 content: new lesson learning

Let's collect pictures and information about bridges and study "bridge".

What shape and structure are these bridges?

Baodai Bridge in Suzhou is a continuous stone arch bridge

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

Prepare: wooden boards or corrugated cardboard, rope, chairs, books.

The two of them pulled the rope at the same time to lift the "bridge".

In what direction are we pushing?

Discuss how to observe and describe a bridge?

What materials are used, what structure is adopted, why this structure is adopted, what is the estimated span, what is its function, what are its characteristics, etc.

The shape and structure of the bridge PPT, the third part: conclusion summary

1. The bridge deck is above the arch: the space under the bridge is high, which facilitates the passage of ships (the three small pictures in the book are of this kind of arch bridge).

2. The bridge deck is under the arch: the bridge deck is low and can be easily connected to the road; the bridge deck pulls the arch feet and can offset the external thrust of the arch (the Qinghai-Tibet Railway Lhasa Bridge is this kind of arch bridge. It adopts a double-layer stacked arch structure.)

3. The main factors that determine the shape and structure of a bridge are usage, materials and technology.

Bridge shape and structure PPT, part 4 content: Classroom exercises

(1) Multiple choice questions

1. The positional relationship between the deck and the arch of an arch bridge can be ( ).

A. The bridge deck is entirely on the bridge arch. B. The bridge deck is entirely under the bridge arch. C. The bridge deck can be on, in the middle or below the bridge arch.

2. What is the correct relationship between the span of the bridge deck and its bending resistance ( ).

A. The larger the span, the greater the bending resistance.

B. The smaller the span, the greater the bending resistance.

C. Span size has nothing to do with bending resistance

(2) Judgment questions

1. All bridges have the bridge deck above the arch. ( )

2. The span of a steel cable bridge can be very large. ( )

3. The bridge deck is under the arch and can pull the arch feet to offset the external thrust of the arch. ( )

The shape and structure of the bridge PPT, part 5: work arrangement

Observe and study a bridge in our hometown, draw its shape and structure, and write a short essay introducing it.

Keywords: Free download of Chinese PPT courseware for the first volume of the sixth grade in the textbook version, PPT download of the shape and structure of the bridge, PPT download of the shape and structure, .PPT format;

For more information about the "Shape and Structure of the Bridge" PPT courseware, please click on the "Shape and Structure PPT Bridge of the Shape and Structure PPT" tab.

"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:

"Shape and Structure of Bridges" Shape and Structure PPT Part One: Various Arch Bridges Observe and compare these arch bridges, what are the similarities and differences between them, and what are the advantages of each? There are bridge arches, bridge decks, and bridge piers. The bridge deck is below the arch. The bridge deck is above the arch. The bridge deck...

"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: 2024-11-15

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

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