CN209148688U - A kind of adjustable concrete early-stage crack resistance experimental rig - Google Patents
A kind of adjustable concrete early-stage crack resistance experimental rig Download PDFInfo
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- CN209148688U CN209148688U CN201821489113.2U CN201821489113U CN209148688U CN 209148688 U CN209148688 U CN 209148688U CN 201821489113 U CN201821489113 U CN 201821489113U CN 209148688 U CN209148688 U CN 209148688U
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- bottom plate
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- steel plate
- crack resistance
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims description 4
- 238000005336 cracking Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004035 construction material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Abstract
The utility model discloses a kind of adjustable concrete early-stage crack resistance experimental rigs, including bottom plate and it is trapped among the two long side plates and two short side plates of bottom plate surrounding, there is uniform graduation mark on long side plate, long side plate both ends set fixed plate, short side board ends weld a root long screw rod, laterally uniform 6 threaded holes of short side plate, the adjustable limiter of threaded hole intubating length, short side plate are connect with long side plate by screw rod.3 stress induced generators are uniformly distributed among bottom plate, the stress induced generator includes the first steel plate and the second steel plate, first steel plate and second steel plate one end are slidably connected with bottom plate, the other end is connected by rotary shaft, the rotating shaft terminal is equipped with telescopic rod, and the telescopic rod is connected with bottom plate.Test block size is adjusted by screw rod, by angle between adjusting telescopic rod the first steel plate of adjusting, test specimen rapid crack propagation can be made in the identical situation of other experimental conditions, this experimental rig is easy to operate, is convenient in demoulding, and improves test efficiency.
Description
Technical field
The utility model belongs to concrete early-stage crack resistance experimental technique field more particularly to a kind of adjustable concrete is early
Phase cracking resistance experimental rig.
Background technique
Concrete is that current usage is extensive, one of the great construction material of dosage, and cracking is the common fault of concrete, is mixed
Solidifying soil early-age crack performance is to measure the important indicator of concrete performance.Therefore, it is anti-how quickly and effectively to test concrete early stage
Fragility can be the research topic of current more hot spot.
Currently, in order to test different ratio concrete early-stage crack resistance, laboratory is passed through frequently with GB/T20082-2009
The flat band method that " Standard for test methods of longterm performance and durability of ordinary concrete standard " recommends, but the method is used, production
Concrete sample size is larger, and larger workload when molding needs more people to cooperate, after the completion of test, since test specimen volume is larger,
Test specimen and mold fit closely together, and test specimen demoulding needs take a substantial amount of time and energy.It is needed to be very careful when demoulding,
Sometimes firmly excessive to will lead to stress induced generator deformation, to influence the accuracy of test next time.
Application No. is the patents of CN201520891391.0 to disclose a kind of concrete early-stage crack resistance experimental rig, packet
Bottom plate and the two long side plates and two short side plates that are trapped among bottom plate surrounding are included, uniform intervals, which are equipped with, on bottom plate is separated into bottom plate
7 of eight regions special-shaped crack-induced devices, special-shaped crack-induced device is parallel with short side plate, the both ends of special-shaped persuader respectively with
Two long side plates are connected and fixed；Angle formed by angle formed by long side plate and bottom plate, short side plate and bottom plate is obtuse angle；The bottom of at
Air inlet is opened up respectively in eight regions of plate.But the adjustability of this device is poor, and can only be fixed-type, and therefore, exploitation
One kind is easy to operate, the simple experimental rig of demoulding is necessary.
Summary of the invention
The purpose of this utility model is in view of the problems of the existing technology, to provide a kind of adjustable concrete early anti-cracking behavior
Energy experimental rig, it is easy to operate, it is convenient in demoulding, and the molding size of adjustable formation of concrete, increases vertical limit
Device processed can make test specimen rapid crack propagation if other conditions are the same.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of adjustable concrete early-stage crack resistance experimental rig, including bottom plate and be trapped among surrounding two long side plates and
Two short side plates are uniformly distributed 3 stress induced generators among the bottom plate, which is characterized in that the short side plate is laterally equal
6 the first threaded holes of even distribution, the adjustable limiter of the first threaded hole intubating length, the stress induced generator include
First steel plate and the second steel plate, first steel plate and second steel plate one end are connected by sliding connector with bottom plate, the other end
It is connected to form an angle by rotary shaft, the rotating shaft terminal is equipped with telescopic rod, and the telescopic rod can be manual telescopic bar
Or hydraulic telescopic rod, the telescopic rod are connected with bottom plate.
Further, the long side plate is equipped with uniform graduation mark.
Further, the long side plate both ends welding has the fixed plate of the second threaded hole, the short side board ends welding
There is screw rod.For proof strength, the fixed plate uses steel material.
Further, the first bolt is equipped at second threaded hole, convenient for adjusting formation of concrete by the first bolt
Sample dimensions.
Further, the long side plate is bolted with the bottom plate by second, long side plate and bottom plate easy to disassemble.
Further, to be detachably connected between the bottom plate and the telescopic rod, the disassembly mode can be screw thread company
It connects or snaps connection.
Further, third bolt is equipped at first threaded hole, convenient for adjusting insertion concrete by third bolt
Test specimen depth.
Further, the sliding connector include be arranged in first steel plate and sliding block on second steel plate and
Sliding slot on bottom plate is set.
In demoulding, all bolts are unloaded, short side plate is tapped with plastic hammer, separates short side plate with limiter, then will
Concrete sample, which is turned, to be beaten bottom with rubber hammer and can demould.
Compared with prior art, the utility model has the beneficial effects that
1, all detachable between each accessory of experimental rig, it is easy to operate, it is convenient in demoulding, greatly improves test efficiency.
2, compact dimensions are adjustable, and can do early anti-cracking behavior for different size test specimens can test.
3, by adjusting the length of telescopic rod, angle between adjustable first steel plate and the second steel plate, and then change
Split power size and Orientation.
Detailed description of the invention
Fig. 1 is the utility model experimental rig top view；
Fig. 2 is the utility model experimental rig main view；
Fig. 3 is the stress induced generator sectional view of the utility model；
In figure: 1, bottom plate；2, long side plate；3, short side plate；4, stress induced generator；5, screw rod；6, limiter；7,
Two bolts；8, the first bolt；9, third bolt；10, fixed plate；11, the first steel plate；12, rotary shaft；13, telescopic rod；14,
Two steel plates；15, sliding slot；16, sliding block.
Specific embodiment
Below in conjunction with the attached drawing in the utility model, the technical solution of the utility model is clearly and completely retouched
It states, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on this
Embodiment in utility model, those of ordinary skill in the art under the conditions of not making creative work it is obtained it is all its
Its embodiment, fall within the protection scope of the utility model.
Embodiment 1:
As shown in Figure 1-3, the utility model discloses a kind of adjustable concrete early-stage crack resistance experimental rig, mold
Long side plate 2 and short side plate 3 are all made of angle steel and are welded, and thickness is not less than 5mm, and the size of long side plate 2 is 1000mm × 100m,
For short side plate 3 having a size of 600mm × 100m, the first plate size is 50mm × 50mm, and screw rod 5 and 6 diameter of limiter are 10mm,
Length is 200mm.
A kind of adjustable concrete early-stage crack resistance experimental rig including bottom plate 1 and is trapped among the two long side plate 2 of surrounding
With two short side plates 3,3 stress induced generators 4 are uniformly distributed among the bottom plate 1, which is characterized in that the short side plate 3
Laterally uniform 6 the first threaded holes, the adjustable limiter 6 of the first threaded hole intubating length, the stress induced hair
Raw device 4 includes the first steel plate 11 and the second steel plate 14, and first steel plate 11 and 14 one end of the second steel plate pass through sliding connector
It is connected with bottom plate 1, the other end is connected to form an angle by rotary shaft 12, and 12 both ends of rotary shaft are equipped with telescopic rod 13, institute
Stating telescopic rod 13 can be manual telescopic bar or hydraulic telescopic rod, and the telescopic rod 13 is connected with bottom plate 1.It is flexible by adjusting
The length of bar 13 so that the first steel plate 11 and the second steel plate 14 are slided on bottom plate by sliding connector, and then is adjusted
Angle between first steel plate 11 and the second steel plate 14, and then change crack initiation power size and Orientation.
The long side plate 2 is connect with the bottom plate 1 by the second bolt 7, long side plate 2 easy to disassemble and bottom plate 1.
2 both ends of the long side plate welding has the fixed plate 10 of the second threaded hole, and the fixed plate 10 is prepared using steel plate,
3 both ends of short side plate are welded with screw rod 5.
The first bolt 8 is equipped at second threaded hole, convenient for adjusting molding concrete sample ruler by the first bolt 8
It is very little.
To be detachably connected between the bottom plate 1 and telescopic rod 13, the disassembly mode can be threaded connection or buckle
Connection.
Third bolt 9 is equipped at first threaded hole, it is deep convenient for adjusting insertion concrete sample by third bolt 9
Degree.
The sliding connector includes that first steel plate 11 and sliding block 16 on second steel plate 14 is arranged in and sets
Set the sliding slot 15 on bottom plate 1.
In demoulding, all bolts are unloaded, short side plate 3 is tapped with plastic hammer, separates short side plate 3 with limiter 6, then
Concrete sample is turned and beats bottom with rubber hammer and can demould.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (8)
1. a kind of adjustable concrete early-stage crack resistance experimental rig, including bottom plate and it is trapped among two long side plates and two of surrounding
A short side plate is uniformly distributed 3 stress induced generators among the bottom plate, which is characterized in that the short side plate is laterally homogeneous
6 the first threaded holes, the adjustable limiter of the first threaded hole intubating length are distributed, the stress induced generator includes the
One steel plate and the second steel plate, first steel plate and second steel plate one end are connected by sliding connector with bottom plate, and the other end is logical
It crosses rotary shaft and is connected to form an angle, the rotating shaft terminal is equipped with telescopic rod, and the telescopic rod is connected with bottom plate.
2. a kind of adjustable concrete early-stage crack resistance experimental rig as described in claim 1, which is characterized in that the long side
Plate is equipped with uniform graduation mark.
3. a kind of adjustable concrete early-stage crack resistance experimental rig as described in claim 1, which is characterized in that the long side
Board ends welding has the fixed plate of the second threaded hole, and the short side board ends are welded with screw rod.
4. a kind of adjustable concrete early-stage crack resistance experimental rig as claimed in claim 3, which is characterized in that described second
The first bolt is equipped at threaded hole.
5. a kind of adjustable concrete early-stage crack resistance experimental rig as described in claim 1, which is characterized in that the long side
Plate is bolted with the bottom plate by second.
6. a kind of adjustable concrete early-stage crack resistance experimental rig as described in claim 1, which is characterized in that the bottom plate
It is to be detachably connected between the telescopic rod.
7. a kind of adjustable concrete early-stage crack resistance experimental rig as described in claim 1, which is characterized in that described first
Third bolt is equipped at threaded hole.
8. a kind of adjustable concrete early-stage crack resistance experimental rig as described in claim 1, which is characterized in that the sliding
Connector includes the sliding slot that first steel plate and sliding block on second steel plate is arranged in and is arranged on bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821489113.2U CN209148688U (en) | 2018-09-12 | 2018-09-12 | A kind of adjustable concrete early-stage crack resistance experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821489113.2U CN209148688U (en) | 2018-09-12 | 2018-09-12 | A kind of adjustable concrete early-stage crack resistance experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209148688U true CN209148688U (en) | 2019-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821489113.2U Active CN209148688U (en) | 2018-09-12 | 2018-09-12 | A kind of adjustable concrete early-stage crack resistance experimental rig |
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| CN (1) | CN209148688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067797A (en) * | 2020-10-16 | 2020-12-11 | 长沙理工大学 | Experimental device for inducing cracking of reinforced concrete pavement |
-
2018
- 2018-09-12 CN CN201821489113.2U patent/CN209148688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067797A (en) * | 2020-10-16 | 2020-12-11 | 长沙理工大学 | Experimental device for inducing cracking of reinforced concrete pavement |
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