CN203422184U - Device for simulating surface friction of template to research lateral pressure of concrete - Google Patents
Device for simulating surface friction of template to research lateral pressure of concrete Download PDFInfo
- Publication number
- CN203422184U CN203422184U CN201320573638.5U CN201320573638U CN203422184U CN 203422184 U CN203422184 U CN 203422184U CN 201320573638 U CN201320573638 U CN 201320573638U CN 203422184 U CN203422184 U CN 203422184U
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- template
- lateral pressure
- pressure
- groove
- plate
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- 239000004567 concrete Substances 0.000 title claims abstract description 38
- 238000011160 research Methods 0.000 title claims abstract description 25
- 238000004088 simulation Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 4
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 239000011376 self-consolidating concrete Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a device of simulation template surface friction research concrete lateral pressure, including template, bottom plate, L template, draw-in groove, pressure sensor and strain collection appearance, two the L template splices into a unit each other, and the device lateral wall is constituteed in the stack from top to bottom to a plurality of units, and install on the bottom plate, be equipped with the circular slot in the middle of the long limit face of L template, place the pressure sensor who is used for measuring lateral pressure in the circular slot, be equipped with the recess in the middle of the bottom plate, place the pressure sensor who is used for measuring vertical pressure in the recess, all pressure sensors all are connected to strain collection appearance through insulating wire, the inner wall of L template is equipped with the draw-in groove, has placed the template in the draw-in. The utility model discloses the device can satisfy in the laboratory under the frictional prerequisite of different templates of consideration, simulate and measure concrete lateral pressure, for template design provides the data in the engineering, has nimble dismantlement moreover, cyclic utilization, advantage such as with low costs.
Description
Technical field
The utility model relates to the device of the lateral pressure that device, the especially self-compacting concrete of a kind of simulated templates mantle friction research concrete lateral pressure produce template.
Background technology
In engineering practice, because the operation of manually vibrating is improper, often cause the phenomenons such as swollen mould, to engineering, cause larger economic loss.In recent years, self-compacting concrete becomes the important branch of Development of HPC, is more and more subject to the favor of construction party.Self-compacting concrete has without vibrating, and only, under Action of Gravity Field, is full of the model that reinforcing bar is intensive; There is high fluidity, high education resistance, high gap handling capacity; And environmental protection, has reduced construction noise without vibrating, reduced artificial.Therefore but due to the high fluidity of self-compacting concrete, cause template lateral pressure larger, study self-compacting concrete lateral pressure size and temporal evolution mechanism has important engineering significance.
At present, the device of domestic research self-compacting concrete template lateral pressure has the side pressure of steel pipe Simulation Study On Pressure differing heights, the generation of different mixture ratio concrete, the size effect of change steel pipe sizes research different templates lateral pressure etc.Due to the difference of boundary condition, for example friction between template surface out-of-flatness and chutable concrete, above-mentioned research method fails truly to reflect self-compacting concrete template lateral pressure.Therefore improve and measure concrete lateral pressure research device, to research lateral pressure, set up lateral pressure temporal evolution formula and have great importance.
Utility model content
The utility model provides a kind of device of simulated templates mantle friction research concrete lateral pressure, by fixing unlike material template in device, simulation concrete and substrate interface, consider the friction between concrete and different templates, met the needs of experiment desk research self-compacting concrete template lateral pressure.
The technical solution adopted in the utility model is: a kind of device of simulated templates mantle friction research concrete lateral pressure, comprise template, base plate, L-type plate, draw-in groove, pressure transducer and strain acquirement instrument, two blocks of described L-type plates are spliced into a unit mutually, a plurality of unit superpose up and down and form this device sidewall, and be arranged on base plate, in the middle of the long side plate face of described L-type plate, be provided with circular groove, in circular groove, place for measuring the pressure transducer of lateral pressure, in the middle of described base plate, be provided with groove, in groove, place for measuring the pressure transducer of pressure at right angle, all pressure transducers are all connected to strain acquirement instrument by insulated line, the inwall of described L-type plate is provided with draw-in groove, in draw-in groove, be placed with template.
As preferably, described base plate and L-type plate are provided with square button, between square smashing, open bolt hole, between upper and lower L-type plate, base plate is connected by bolt and nut at square plate place with L-type plate.
As preferably, jog is established in end, described L-type plate length limit, for two plates splicing interlocks.
As preferably, threaded hole is established in described draw-in groove end, by bolt, props up template.
As preferably, in described circular groove, be provided with the external thread pipe of fixation pressure sensor.
As preferably, described external thread pipe length is greater than L-type plate thickness 10～20mm.
As preferably, described L-type plate minor face is 300～500mm, and long limit is 300～700mm, device overall height 300～3000mm after the stack of L-type plate.。
As preferably, described base plate and L-type sheet material matter are steel or compound substance.
As preferably, described template material is plank, steel plate, or for being wiped with the concrete plank of one deck (simulation prefabricated panel).
As preferably, the square button quantity of every block of described L-type plate is 1～3.
The utility model L-type plate inner side arranges draw-in groove, for shelving unlike material template, and wooden model for example, the prefabricated board in punching block and superposed member, the frictional interface of simulation concrete and unlike material template.Simulate superimposed wall prefabricated board technical scheme: prefabricated one is applicable to the plank of device length of side size, and plank two ends reserve 5cm, for template, inserts draw-in groove activity space, and remainder is smeared a layer concrete, treats concrete hardening, from device draw-in groove, be inserted into base plate.
Beneficial effect: the utility model can record lateral pressure and the pressure at right angle of concrete in casting process, and then the impact that can draw friction factor.The utility model for overcome in laboratory cannot real simulation engineering in the interface friction of template during actual casting concrete, for research template friction supplying method, for Practical Project stencil design provides engineering data.The utlity model has the economy of experiment desk research concrete blinding lateral pressure.
Accompanying drawing explanation
Fig. 1 is the utility model device overall schematic;
Fig. 2 is the utility model device side schematic view one;
Fig. 3 is the utility model device side schematic view two;
Fig. 4 is the utility model device schematic internal view;
Fig. 5 is the utility model device L-type plate schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As Figure 1-5, a kind of device of simulated templates mantle friction research concrete lateral pressure, comprises template, base plate 1, L-type plate 2, bolt hole 3, bolt 4, nut 5, circular groove 6, external thread pipe 7, draw-in groove 8, square button 9, pressure transducer, insulated line 10, strain acquirement instrument, bottom plate groove 11.Between described base plate 1 and L-type plate 2, between L-type plate 2, at square button 9 places, by bolt 3, connect.Described L-type plate 2 inside are provided with draw-in groove 8, and bolt hole 3 is established in draw-in groove 8 ends.Described template is inserted into base plate 1 from draw-in groove 8.Described L-type plate 2 is established threaded circular groove 6, the interior placement force sensor of circular groove 6 in the middle of long side plate face.Described external thread pipe 7 is screwed in circular groove 6.The insulated line 10 of described pressure transducer is drawn with strainmeter and is connected from external thread pipe 7 inner sides.
In the middle of described base plate 1, establish groove, for placement force sensor, measure pressure at right angle, pressure transducer insulated line is drawn from device cavity, is connected to strainmeter.Described L-type plate 2 is highly 300～500mm, and multistage L-type plate 2 is connected at square 9 places that buckle by bolt 4 up and down, and L-type plate 2 longer sides length can be 300mm～500mm.Jog is established in L-type plate 2 ends, length limit, for two plate splicing interlocks.L-type plate 2 inner sides arrange draw-in groove 8, for shelving unlike material template, and wooden model for example, the prefabricated board in punching block and superposed member.The superimposed wall prefabricated board of described simulation mould plate technique scheme: prefabricated one is applicable to the plank of device length of side size, plank two ends reserve 5cm, for template, insert draw-in groove activity space, and remainder is smeared a layer concrete, treat concrete hardening, from device draw-in groove 8, be inserted into base plate 1.Described draw-in groove 8 is established threaded hole, uses bolt 3 to prop up template.There is circular groove 6 in L-type plate 2 outsides, and size is general with pressure transducer, and for placement force sensor, circular groove 6 is furnished with external thread pipe 7, and sensor insulated line 10 is drawn from external thread pipe 7 inside, is connected with strainmeter.Described external thread pipe 7 length are greater than L-type plate 2 thickness 10～20mm.
Measuring method and principle explanation:
This measuring method is intended to measure lateral pressure, under known concrete in static water pressure value prerequisite, utilizes following formula can obtain the scale-up factor of gaging pressure and hydrostatic force value, for Practical Project provides stencil design data.
σ
p＝Kσ
h （1）；
σ
h＝γ
cH （2）。
σ
p-lateral pressure; σ
h-concrete in static water pressure value; γ
c-concrete severe; H-device inner concrete height; K-wall pressure and hydrostatic force value ratio
Implementation step:
1, erecting device, and insert template;
2, install side along certain altitude setting pressure sensor, and be connected to Acquisition Instrument;
3, to the inner casting concrete of device, and carry out data acquisition;
4, through type (1) calculates K value.
In this measuring method, K value can be Practical Project stencil design data is provided.
It should be pointed out that for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.In the present embodiment not clear and definite each ingredient all available prior art realized.
Claims (10)
1. the device of simulated templates mantle friction research concrete lateral pressure, it is characterized in that: comprise template, base plate, L-type plate, draw-in groove, pressure transducer and strain acquirement instrument, two blocks of described L-type plates are spliced into a unit mutually, a plurality of unit superpose up and down and form this device sidewall, and be arranged on base plate, in the middle of the long side plate face of described L-type plate, be provided with circular groove, in circular groove, place for measuring the pressure transducer of lateral pressure, in the middle of described base plate, be provided with groove, in groove, place for measuring the pressure transducer of pressure at right angle, all pressure transducers are all connected to strain acquirement instrument by insulated line, the inwall of described L-type plate is provided with draw-in groove, in draw-in groove, be placed with template.
2. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 1, it is characterized in that: described base plate and L-type plate are provided with square button, between square smashing, open bolt hole, between upper and lower L-type plate, base plate is connected by bolt and nut at square plate place with L-type plate.
3. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 1, it is characterized in that: jog is established in end, described L-type plate length limit, for two plate splicing interlocks.
4. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 1, it is characterized in that: threaded hole is established in described draw-in groove end, by bolt, props up template.
5. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 1, it is characterized in that: the external thread pipe that is provided with fixation pressure sensor in described circular groove.
6. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 5, it is characterized in that: described external thread pipe length is greater than L-type plate thickness 10～20mm.
7. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 1, it is characterized in that: described L-type plate minor face is 300～500mm, long limit is 300～700mm, device overall height 300～3000mm after the stack of L-type plate.
8. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 1, it is characterized in that: described base plate and L-type sheet material matter are steel or compound substance.
9. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 1, it is characterized in that: described template material is plank, steel plate, or for being wiped with the concrete plank of one deck (simulation prefabricated panel).
10. according to the device of a kind of simulated templates mantle friction research concrete lateral pressure of claim 1, it is characterized in that: the square button quantity of every block of described L-type plate is 1～3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573638.5U CN203422184U (en) | 2013-09-16 | 2013-09-16 | Device for simulating surface friction of template to research lateral pressure of concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573638.5U CN203422184U (en) | 2013-09-16 | 2013-09-16 | Device for simulating surface friction of template to research lateral pressure of concrete |
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| CN203422184U true CN203422184U (en) | 2014-02-05 |
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| CN201320573638.5U Expired - Lifetime CN203422184U (en) | 2013-09-16 | 2013-09-16 | Device for simulating surface friction of template to research lateral pressure of concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471757A (en) * | 2013-09-16 | 2013-12-25 | 南京工业大学 | Device for simulating surface friction of template to research lateral pressure of concrete |
| CN104897884A (en) * | 2015-06-17 | 2015-09-09 | 西安科技大学 | Formwork side pressure testing device and method for grouting filling material under self-weight load |
-
2013
- 2013-09-16 CN CN201320573638.5U patent/CN203422184U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471757A (en) * | 2013-09-16 | 2013-12-25 | 南京工业大学 | Device for simulating surface friction of template to research lateral pressure of concrete |
| CN103471757B (en) * | 2013-09-16 | 2015-07-01 | 南京工业大学 | Device for simulating surface friction of template to research lateral pressure of concrete |
| CN104897884A (en) * | 2015-06-17 | 2015-09-09 | 西安科技大学 | Formwork side pressure testing device and method for grouting filling material under self-weight load |
| CN104897884B (en) * | 2015-06-17 | 2016-06-29 | 西安科技大学 | Form lateral pressure method of testing from heavy load bet slurry filler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140205 Effective date of abandoning: 20150701 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140205 Effective date of abandoning: 20150701 |
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| RGAV | Abandon patent right to avoid regrant |