CN204904655U - Axle center receives atress teaching presentation device of compression leg - Google Patents
Axle center receives atress teaching presentation device of compression leg Download PDFInfo
- Publication number
- CN204904655U CN204904655U CN201520536533.1U CN201520536533U CN204904655U CN 204904655 U CN204904655 U CN 204904655U CN 201520536533 U CN201520536533 U CN 201520536533U CN 204904655 U CN204904655 U CN 204904655U
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- CN
- China
- Prior art keywords
- pillar
- load
- atress
- ears
- post
- Prior art date
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- Expired - Fee Related
Links
- 238000007906 compression Methods 0.000 title claims abstract description 18
- 230000006835 compression Effects 0.000 title abstract 3
- 210000005069 ears Anatomy 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The utility model discloses an axle center receives atress teaching presentation device of compression leg belongs to teaching assistance equipment technical field, it includes post, support, bottom plate, backplate, ears couple, weight, the backplate sets up in bottom plate one side, and the support setting is on the bottom plate, and the post is fixed on the support, and the ears couple sets up at the post tip, and the weight is hung on the ears couple, according to the axle center receive the compression leg at load not, add the atress that is lighter than critical power load and adds three kinds of operating modes of critical power load and show, understand the post and stablize the basic concept in the theory, stable equilibrium equation and critical load promptly, the device of the utility model is simple in structure, can understand the notion of explaining stable equilibrium equation and critical power for the student directly perceived.
Description
Technical field
The utility model relates to the stressed teaching demonstration device of the teaching demonstration device, particularly a kind of Axial-compression Column of a kind of Stability Analysis of Structures theory and analysis course, belongs to tutor auxiliary platform equipment technical field.
Background technology
Current high-strength material application is more extensive, and it is more elongated that pillar can do, and the design of colonnette take stability equilibrium equation as controlled condition.The prerupture distortion of Stability Analysis of Structures may be very little, and unstable failure may be the change of unexpected planform, and cause architecture lost load-bearing capacity and overall slump, consequence is very serious.Thus for the student of civil engineering, grasp the stable theory of steel construction and xoncrete structure and analyze course, being extremely necessary.And the feature of this subject to be theoretical property strong, formula is many and complicated, conceptual abstraction, and student understands difficulty.The stable problem of Axial-compression Column is a key concept, and belong to fork unstability type, critical force is its most important mechanical characteristics, and it is also the higher limit of eccentric force situation ultimate bearing capacity.Therefore understand the relation between column interior drag and external loads, and the concept of stability equilibrium equation and critical load is the theoretical core content with analyzing in course teaching of Stability Analysis of Structures and study difficult point.In teaching in the past, due to the processing of steel construction or reinforced concrete member and cost of manufacture high, the lecture experiment that Axial-compression Column is stressed is not set, teacher can only explain it according to the part figure on textbook, student lacks perceptual knowledge intuitively, be difficult to the concept understanding stability equilibrium equation and critical force, thus affect student's studying in depth and correctly applying this course.
Summary of the invention
The technical problems to be solved in the utility model is the stressed teaching demonstration device providing a kind of Axial-compression Column for the stable problem of Axial-compression Column; By the demonstration to this device, the stressed performance under student can be helped to observe the different load actions of Axial-compression Column intuitively, the correct grasp stability equilibrium equation of Axial-compression Column and the concept of critical load.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The stressed teaching demonstration device of Axial-compression Column comprises pillar 1, bearing 2, base plate 3, backboard 4, ears hook 5, counterweight 6; Backboard 4 is arranged on base plate 3 side, and bearing 2 is arranged on base plate 3, and pillar 1 is fixed on bearing 2, and ears hook 5 is arranged on pillar 1 end, and counterweight 6 hangs on ears hook 5, to realize the uniaxial force of pillar.
Described pillar 1 can be made with bamboo chip, two bearings 2 in pillar 1 one end are clamped, bearing 2 is fixed on base plate, backboard 4 can brush into white, and on backboard 4, mark a datum line 7, datum line 7 not to stress the position of state for identifying pillar 1, and after pillar adding two counterweights 6, datum line is for measuring the horizontal shift of capital.
Can implement not add counterweight for pillar 1, add three kinds of load cases of miniweights and increasing counterweight, any displacement is applied on pillar 1 top with hand, observe the recovery situation of pillar distortion, understand the relation between column interior drag and external loads, and the concept of stability equilibrium equation and critical load, realize the stressed teaching demonstration of Axial-compression Column.
The utility model not adding load, adding the stressed performance being less than critical force load and adding critical force load three kinds of operating modes, understands the key concept in column stabilization theory, i.e. stability equilibrium equation and critical load according to Axial-compression Column; When pillar does not add load, apply any displacement with hand at capital, post will return to original place very soon.When capital applies the load that is less than critical force, apply any displacement with hand at capital, post slowly will return to original place.When capital applies critical force load, apply any displacement with hand at capital, pillar stays put.By above-mentioned demonstration, can can the following problem be answered very intuitively: set back after 1, in what situations distortion being applied to pillar? does when 2, adding load why not, pillar set back very soon, and pillar slowly sets back when adding load? does is 3, what the relation between critical force and interior moment of flexure? do 4, why under critical force effect, original position stayed by pillar?
The utility model apparatus structure is simple, can be intuitively, clearly the stressed situation of change of student explain Axial-compression Column, and this device is applicable to industrialization and produces, and has the prospect applied.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model device;
Fig. 2 be the utility model device face structural representation;
In figure: 1 is pillar; 2 is bearings; 3 is base plates; 4 is backboards; 5 is ears hooks; 6 is counterweights; 7 is datum lines.
Embodiment
Below by drawings and Examples, the utility model is described in further detail, but protection domain of the present utility model is not limited to described content.
Embodiment 1: as shown in Figure 1, 2, the stressed teaching demonstration device of this Axial-compression Column comprises pillar 1, bearing 2, base plate 3, backboard 4, ears hook 5, counterweight 6; Backboard 4 is arranged on base plate 3 side, and bearing 2 is arranged on base plate 3, and pillar 1 is fixed on bearing 2, and ears hook 5 is arranged on pillar 1 end, and counterweight 6 hangs on ears hook 5, to realize the uniaxial force of pillar; Backboard 4 is provided with datum line 7; Wherein said pillar 1 is bamboo chip.
Pillar 1 pushes up and does not first add loading, pushes up applying one displacement arbitrarily, as displacement with hand at pillar 1
, then unclamp, pillar 1 will return to original place very soon, does not have external loads, Moments after unclamping
, only have internal resistance, interior moment of flexure
, at this moment balance equation
.
Pillar 1 top adds two miniweights 6, and loading is
, push up applying one displacement arbitrarily, as displacement with hand at pillar 1
, then unclamp, pillar 1 will set back very lentamente, no longer equals zero because unclamping rear Moments, but Moments
, interior moment of flexure is
, at this moment balance equation
.
Capital adds two large counterweights, and loading is
, apply any displacement, as displacement with hand at capital
, then unclamp, post will no longer set back, but stay original position, because unclamping rear Moments be
, interior moment of flexure is
, at this moment balance equation
.
Claims (2)
1. a stressed demonstration model for teaching for Axial-compression Column, is characterized in that: this device comprises pillar (1), bearing (2), base plate (3), backboard (4), ears hook (5), counterweight (6); Backboard (4) is arranged on base plate (3) side, and bearing (2) is fixed on base plate (3), and pillar (1) is fixed on bearing (2), and ears hook (5) are arranged on pillar (1) end, and counterweight (6) hangs on ears hook (5).
2. the stressed demonstration model for teaching of Axial-compression Column according to claim 1, is characterized in that: with datum line (7) on backboard (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536533.1U CN204904655U (en) | 2015-07-23 | 2015-07-23 | Axle center receives atress teaching presentation device of compression leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536533.1U CN204904655U (en) | 2015-07-23 | 2015-07-23 | Axle center receives atress teaching presentation device of compression leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204904655U true CN204904655U (en) | 2015-12-23 |
Family
ID=54926816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520536533.1U Expired - Fee Related CN204904655U (en) | 2015-07-23 | 2015-07-23 | Axle center receives atress teaching presentation device of compression leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204904655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952543A (en) * | 2017-04-26 | 2017-07-14 | 重庆科技学院 | A kind of steel member axial compression demonstration mechanism self-reacting device |
-
2015
- 2015-07-23 CN CN201520536533.1U patent/CN204904655U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952543A (en) * | 2017-04-26 | 2017-07-14 | 重庆科技学院 | A kind of steel member axial compression demonstration mechanism self-reacting device |
| CN106952543B (en) * | 2017-04-26 | 2023-12-22 | 重庆科技学院 | Steel member axial compression presentation mechanism self-adaptation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20170723 |