CN106979882B - It is a kind of for making the device and method of concrete by three-point bending coped beam - Google Patents
It is a kind of for making the device and method of concrete by three-point bending coped beam Download PDFInfo
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- CN106979882B CN106979882B CN201710388606.0A CN201710388606A CN106979882B CN 106979882 B CN106979882 B CN 106979882B CN 201710388606 A CN201710388606 A CN 201710388606A CN 106979882 B CN106979882 B CN 106979882B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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Abstract
The invention discloses a kind of device and methods for making concrete by three-point bending coped beam, including concrete by three-point bending coped beam beam body, concrete by three-point bending coped beam sphenoid two parts.Concrete by three-point bending coped beam sphenoid is combined with concrete by three-point bending coped beam beam body by positioning bolt, device of the production with concrete by three-point bending coped beam is constituted.The apparatus structure is simple and convenient to operate, is practical, and using device production is easy to operate with concrete by three-point bending coped beam, kerf is complete, test accuracy is high.
Description
Technical field
The present invention relates to a kind of for making the device of concrete by three-point bending coped beam, further relates to a kind of production coagulation
The method of the device production concrete by three-point bending coped beam of native three-point bending coped beam, belongs to concrete test technical field.
Background technique
As construction material most popular in the world today, concrete is present not only on common building object, equally
Also using pressure vessels such as concrete, such as dam, drilling platforms and nuclear power station, this makes building in complex work environment
It obtains people and not only only focuses on the basic performances such as tension and the compression strength of concrete, fracture characteristics and failure mechanism are also increasingly subject to
The attention of researcher.
DL/T 5332-2005 " concrete for hydraulic structure destructive test regulation " is proposed with edge splitting method and three-point bending beam
The fragmentation parameters of method test concrete.Three-point bending beam method is compared with edge splitting method and is easier to obtain stable trial curve,
Therefore it is widely used.But the test specimen manufacturing process that three-point bending beam method uses is more complex, the success rate of test specimen production is low, mesh
Preceding master's method to be used has prepared recess method and cutting incision method.Cutting incision method is primarily directed to plain concrete, if
The materials such as steel fibre are added in concrete to be then difficult to be cut into the notch for meeting test requirements document, therefore prepared recess method receives
Widely use.
It the use of prepared recess method is approval of the three-point bending beam prepared recess by most of testing crew, but due to not having
There is the mold of suitable production test specimen, test specimen qualification rate is very low.When making concrete by three-point bending coped beam, it is under normal conditions
Directly the steel disc of prepared recess is fixed in die trial, since steel disc is fixed in die trial, is only taken in demoulding Shi Caineng
Out, it be easy to cause prepared recess unfilled corner to damage or causes steel disc that can not extract concrete.Another method is directly to try
Any long side midpoint insertion steel disc of mould makes notch, but since steel disc is not firmly fixed in die trial, that produces is cut
Mouth can occur to deviate, tilt, and thus lead to test error.The steel disc that patent 201621086437.2 is used to make prepared recess exists
Design deficiency blade in actual use due to itself still can deviate, so fracture deviation cannot be solved inherently
Problem.
In consideration of it, a kind of device and method for being used to make concrete by three-point bending coped beam for facilitating operation is invented, it is right
There is very important realistic meaning in production concrete by three-point bending coped beam.
Summary of the invention
The present invention provides a kind of device for making concrete by three-point bending coped beam, solves production concrete by three-point bending
Coped beam process is complicated, the low problem of test specimen qualification rate.
In order to solve the above technical problems, the present invention provides a kind of device for making concrete by three-point bending coped beam, packet
Include concrete by three-point bending coped beam beam body and concrete by three-point bending coped beam sphenoid.It is characterized in that 3 points of concrete curved
Bent coped beam beam body is combined with concrete by three-point bending coped beam sphenoid by positioning bolt, detachable.Concrete
Three-point bending coped beam beam body inner wall size 200mm × 120mm × 1000mm, the knife of concrete by three-point bending coped beam sphenoid
Piece thickness 3mm, high 200mm, long 80mm, 15 ° of insert tip angle.
Concrete by three-point bending coped beam beam body is by front side board, back side panel, end plate, lateral register plate, bottom plate, Zong Xiangla
Bar, girt and nut composition；End plate is extend into the groove of front side board and back side panel, with girt by front side board and after
Side plate drawknot gets up, then nut is fixed to the two sides of girt, and the opposite position of front side board, back side panel and end plate is fixed with this
It sets；Lateral register plate welds together with bottom plate, and longitudinal tie is welded on bottom plate two sides, and front side board is welded on bottom plate and does not open
The side of slot；It is inserted into after the relative position of end plate and back side panel is fixed in the groove of corresponding bottom plate, longitudinal tie is from cross-tie
Centre pass through, in the free end fixture nut of longitudinal tie, thus constitute concrete by three-point bending coped beam beam body.Front side
Plate is divided into two sections in middle position, opens front side board groove on every section of plate thickness direction respectively, the two front side board grooves with
Lateral register plate collectively constitutes sphenoid locating slot.
Concrete by three-point bending coped beam sphenoid is made of erection plate, blade and positioning bolt；It erects plate and blade welds
It connects in succession, and the angle between them is 90 °；Two positioning bolts are welded at the middle part for erecting plate another side.
The erection plate of concrete by three-point bending coped beam sphenoid is extend into sphenoid locating slot, fixing concrete three
Screwed in place bolt behind the position of point curved cuts beam sphenoid, i.e., by concrete by three-point bending coped beam sphenoid and concrete
Three-point bending coped beam beam body is combined, and the device of production concrete by three-point bending coped beam is constituted.
It is a further object to provide a kind of devices with production concrete by three-point bending coped beam to make coagulation
The method of native three-point bending coped beam, includes the following steps:
1. the device of assembling production concrete by three-point bending coped beam, and the uniform coating lubricating oil of wall in the device.
2. casting concrete, vibration compacting, plastering.
3. unclamp positioning bolt, along sphenoid locating slot slide concrete by three-point bending coped beam sphenoid, make blade with
After concrete produces relative sliding, by concrete by three-point bending coped beam Wedge sliding to the bottom of sphenoid locating slot,
Stationary positioned bolt.
4. step 3 is repeated 5 times in the 3h that concreting is completed.
5. concrete unclamps positioning bolt after reaching initial set, concrete by three-point bending coped beam sphenoid is determined along sphenoid
Position slot slowly skids off, and forms the prepared recess of concrete by three-point bending coped beam.
6. pouring the dismantling concrete three-point bending coped beam beam body rear for 24 hours of completion in test specimen, test specimen is put into coagulation
Maintenance in native fog room.
7. the device of production concrete by three-point bending coped beam is cleared up and assembles, in case next time uses.
The invention of this reality has advantageous effect in that: structure is simple and convenient to operate, is practical；It is made using the device
Concrete by three-point bending coped beam sphenoid is securely fixed in concrete by three-point bending and cuts when concrete by three-point bending coped beam
In mouthful beam beam body, when pouring with compacted concrete concrete by three-point bending coped beam sphenoid will not loosen, fall off and
Deflection, ensure that notch perpendicular to test specimen；3 points of concrete curved notch curved beam sphenoids and concrete by three-point bending coped beam beam
Body is detachable, can smoothly extract after concrete initial set, forms complete notch.
Detailed description of the invention
Fig. 1 is schematic diagram of the invention.
Fig. 2 is three-view diagram of the invention.
Fig. 3 is concrete by three-point bending coped beam beam body schematic diagram.
Fig. 4 is concrete by three-point bending coped beam sphenoid schematic diagram.
3 schematic diagram of Fig. 5 sphenoid locating slot
Fig. 6 is 10 schematic diagram of bottom plate.
Fig. 7 is the schematic diagram of back side panel 6.
Fig. 8 is the schematic diagram of front side board 9.
Fig. 9 is the schematic diagram of longitudinal tie 12 and girt 13.
In figure, 1- nut；2- end plate；3- sphenoid locating slot；4- erects plate；5- blade；6- back side panel；7- lateral register
Plate；8- positioning bolt；9- front side board；10- bottom plate；11- longitudinal tie；12- girt；13- through-hole；61- back side panel groove；
91- front side board groove；101- bottom plate groove.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The present invention such as Fig. 1 to Fig. 9, including concrete by three-point bending coped beam beam body and concrete by three-point bending coped beam wedge
Body two parts, specifically by nut 1, end plate 2, sphenoid locating slot 3, erect plate 4, blade 5, back side panel 6, lateral register plate 7,
Positioning bolt 8, front side board 9, bottom plate 10, longitudinal tie 11 and girt 12 form.
Side plate groove 61 is opened on 6 two opposite short sides of back side panel, bottom plate groove 101 is opened on three sides of bottom plate.
It is two pieces that front side board 9, which is divided to, as shown in figure 8, longitudinal direction midpoint cut out it is a bit of, in remaining two sections of thickness
Degree opens front side board groove 91 on direction, and side plate groove 61 is opened at another both ends.Front side board 9 is welded on 10 unslotted side of bottom plate.
The protrusion at the both ends of front side board 9 and back side panel 6 opens hole 13.
Screw thread is made in 11 upper end of longitudinal tie, and screw thread is made at the both ends of girt 12.
End plate 2 is extend into the side plate groove 61 at the both ends of front side board 9 and back side panel 6, passes through front side with girt 12
In the through-hole 13 of plate 9 and back side panel 6, then in the two sides fixture nut 1 of girt 12, thus secure front side board 9, back side panel
6 and end plate 2 relative position；The non-threaded one end of longitudinal tie 11 is welded on to the highlight of bottom plate 10, lateral register plate 7 welds
To the midpoint of 10 unslotted side of bottom plate, end plate 2, back side panel 6 are protruded into corresponding bottom plate groove 101, longitudinal tie 11
It is passed through from the middle part of girt 12, nut 1 is fixed on the free end of longitudinal tie 11, the box-like of the recording quantity thus formed
Body is concrete by three-point bending coped beam beam body.
Concrete by three-point bending coped beam beam body inner wall size 200mm × 120mm × 1000mm.
Two sections of opposite front side board grooves 91 and lateral register plate 7 form sphenoid locating slot 3.
Blade 5 is welded on the centre for erecting plate 4, guarantees that angle between the two is 90 °, in the middle part of the reverse side for erecting plate 4
Two positioning bolts 8 are welded, concrete by three-point bending coped beam sphenoid is formed.
Blade 5 thickness 3mm, high 200mm, the long 80mm of concrete by three-point bending coped beam sphenoid, insert tip angle
15°。
The erection plate 4 of concrete by three-point bending coped beam sphenoid is extend into sphenoid locating slot 3, fixing concrete
Thus screwed in place bolt 8 behind three-point bending coped beam wedge shape body position constitutes production concrete by three-point bending coped beam
Device.
Using the specific step of the concrete by three-point bending coped beam of the device production notch of concrete by three-point bending coped beam
It is rapid as follows:
1. the device of assembling production concrete by three-point bending coped beam, and the uniform coating lubricating oil of wall in the device.
2. casting concrete, vibration compacting, plastering.
3. unclamping positioning bolt 8, concrete by three-point bending coped beam sphenoid is slided along sphenoid locating slot 3, makes blade 5
After being produced relative sliding with concrete, by concrete by three-point bending coped beam Wedge sliding to the most lower of sphenoid locating slot
End, stationary positioned bolt 8.
4. step 3 is repeated 5 times in the 3h of concreting.
5. concrete unclamps positioning bolt 8 after reaching initial set, by concrete by three-point bending coped beam sphenoid along sphenoid
Locating slot 3 slowly skids off, and forms the prepared recess of concrete by three-point bending coped beam.
6. pouring the dismantling concrete three-point bending coped beam beam body rear for 24 hours of completion in test specimen, test specimen is put into coagulation
Maintenance in native fog room.
7. the device of production concrete by three-point bending coped beam is cleared up and assembles, in case next time uses.
Claims (5)
1. a kind of device for making concrete by three-point bending coped beam, by nut (1), end plate (2), back side panel (6), lateral register
Plate (7), positioning bolt (8), front side board (9), bottom plate (10), longitudinal tie (11) and girt (12) composition, feature exist
In: it further include sphenoid locating slot (3) and concrete by three-point bending coped beam sphenoid, the concrete by three-point bending coped beam
Sphenoid is made of erection plate (4), blade (5) and positioning bolt (8) three parts, and blade (5), which is welded on, to be erected in plate (4)
Between, guarantee that angle between the two is 90 °, two positioning bolts (8) is welded in the middle part of the reverse side for erecting plate (4), by concrete
The erection plate (4) of three-point bending coped beam sphenoid is extend into sphenoid locating slot (3), fixing concrete three-point bending notch
Thus screwed in place bolt (8) behind the position of beam sphenoid constitute the device of production concrete by three-point bending coped beam.
2. a kind of device for making concrete by three-point bending coped beam according to claim 1, it is characterised in that: before described
Side plate (9) cuts out a bit of in the midpoint of longitudinal direction, opens front side board groove (91) on remaining two sections of thickness direction, preceding
Side plate (9) and lateral register plate (7) are welded on bottom plate (10) unslotted side.
3. a kind of device for making concrete by three-point bending coped beam according to claim 2, it is characterised in that: two sections of phases
Pair front side board groove (91) and lateral register plate (7) composition sphenoid locating slot (3).
4. a kind of device for making concrete by three-point bending coped beam according to claim 1, it is characterised in that: the device
It is made of steel.
5. a kind of make concrete by three-point bending notch beam method with production concrete by three-point bending notch boom device, feature exists
In: specific step is as follows:
(1) device of assembling production concrete by three-point bending coped beam, and the uniform coating lubricating oil of wall in the device；
(2) casting concrete, vibration compacting, plastering；
(3) positioning bolt (8) are unclamped, slides concrete by three-point bending coped beam sphenoid along sphenoid locating slot (3), makes blade
(5) after being produced relative sliding with concrete, by concrete by three-point bending coped beam Wedge sliding to sphenoid locating slot (3)
Bottom, screwed in place bolt (8), the position of fixing concrete three-point bending coped beam sphenoid；
(4) step 3 is repeated 5 times in the 3h that concreting is completed；
(5) concrete unclamps positioning bolt (8) after reaching initial set, and concrete by three-point bending coped beam sphenoid is determined along sphenoid
Position slot (3) slowly skids off, and forms the prepared recess of concrete by three-point bending coped beam；
(6) the dismantling concrete three-point bending coped beam beam body rear for 24 hours that completion is poured in test specimen, is put into concrete for test specimen and supports
Protect indoor maintenance；
(7) device of production concrete by three-point bending coped beam is cleared up and assembles, in case next time uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388606.0A CN106979882B (en) | 2017-05-27 | 2017-05-27 | It is a kind of for making the device and method of concrete by three-point bending coped beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388606.0A CN106979882B (en) | 2017-05-27 | 2017-05-27 | It is a kind of for making the device and method of concrete by three-point bending coped beam |
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| CN106979882A CN106979882A (en) | 2017-07-25 |
| CN106979882B true CN106979882B (en) | 2019-06-04 |
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