CN209148447U - A kind of solid concrete compression strength annulus draw cut method detection device - Google Patents
A kind of solid concrete compression strength annulus draw cut method detection device Download PDFInfo
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- CN209148447U CN209148447U CN201822054472.1U CN201822054472U CN209148447U CN 209148447 U CN209148447 U CN 209148447U CN 201822054472 U CN201822054472 U CN 201822054472U CN 209148447 U CN209148447 U CN 209148447U
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- screw rod
- draw cut
- hydraulic jack
- solid concrete
- compression strength
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Abstract
A kind of solid concrete compression strength annulus draw cut method detection device successively lays the column indenter indentation, miniature screw rod hydraulic jack including the T shape cylinder sample being located in solid concrete thereon；The column indenter indentation is connect by spherical bearing with miniature screw rod hydraulic jack head；The miniature screw rod hydraulic jack tail portion is equipped with plectane pedestal；The force application structure for applying draw cut power is installed on the plectane pedestal；Digital pressure gauge is also equipped on the plectane pedestal；The plectane perimeter is connected with the L shape counter-force pull ring that can enclose T shape cylinder sample；The T shape cylinder sample, the column indenter indentation, miniature screw rod hydraulic jack, plectane pedestal, L shape counter-force pull ring longitudinal axis.The utility model is applied widely, practical, and detection is accurate.
Description
Technical field
The utility model relates to a kind of solid concrete compression strength annulus draw cut method detection devices.
Background technique
Compression strength is important one of the performance parameter of concrete, is directly related to concrete component or even entire engineering matter
Measure safety and normal use.Therefore, carrying out detection to solid concrete compression strength is a very important job.
In the prior art, as follows respectively for detecting there are many common methods of solid concrete compression strength:
(1) platen press is cut.Using concrete shearing press instrument, the right-angle side surface of concrete component is applied perpendicular to pressure-bearing surface
Pressure so that the right-angle side of concrete component generates local shear compression failure, and estimates concrete structure according to shearing pressure at this time
The compression strength of part.Shortcoming existing for this method: not being suitable for the concrete that thickness is less than 80mm, such as ground surface layer, one
As the thickness ㎜ of 40 ㎜ ~ 60, can not detect, influence detect practicability.(2) core drilling method.Concrete examination is drilled through on concrete component
Part, and it is processed into standard core sample, its compression strength detection is carried out on pressure testing machine.The shortcoming of the detection method: by
In 100 × 100 ㎜ of standard core sample size produced, for thin-lift concrete, such as ground surface layer, the general thickness ㎜ of 40 ㎜ ~ 60,
It can not detect, influence to detect practicability.(3) rebound method.According to the relationship of surface of concrete structure hardness and strength, coagulation is estimated
The compression strength of native component.The shortcoming of the detection method: by the relationship of surface hardness and intensity, the pressure resistance that is derived
It is lower to spend precision, influences detection accuracy；It is not suitable for the concrete that age is more than 1000 days, influences to detect practicability.(4) surpass
Sound springs back synthesis.According to the ultrasonic velocity in the hardness and concrete component of surface of concrete structure, to estimate concrete
Compression strength.The shortcoming of the detection method: test operation process is relatively complicated, and test influence factor is relatively more, easily produces
Raw a variety of measurement errors, influence detection accuracy；It is not suitable for the concrete that age is more than 2000 days, influences to detect practicability.
(5) pulling out method.According in the range of the 30mm of concrete component surface layer, dial-out power when concrete component destroys estimates concrete
Compression strength.The shortcoming of the detection method: detection process needs to carry out complicated drilling and slot grinding process, is not suitable for thickness
Degree is less than the concrete of 80mm, and such as ground surface layer, the general thickness ㎜ of 40 ㎜ ~ 60 can not be detected, and influences to detect practicability.(6) it draws
De- method.On the concrete component hardened, 44 ㎜ of test specimen, 44 ㎜ core sample test specimen of depth are drilled, with Automatic-clamping test specimen
Device carry out pull-off test, according to the pull-off strength value of core sample test specimen estimate concrete crushing strength.The detection method is not
Foot place: the diameter dimension that position is mutually perpendicular to close to test specimen breaking part need to be measured by calculating when pulling test specimen stress, due to test specimen
Diameter is smaller, and accurate measurement is more difficult, influences accuracy in detection.
In conclusion the above detection method presence can not accurate and effective detection thickness be less than 80mm and age is more than 2000 days
The problem of concrete crushing strength, therefore need to be designed improvement.
Summary of the invention
The utility model proposes a kind of practical, detections accurately, the reasonable solid concrete compression strength circle of design
Ring draw cut method detection device.The device be able to solve the existing various detection methods of solid concrete compression strength it is existing, can not
Accurate and effective detects thickness to be less than 80mm and age the problem of being more than 2000 days concrete crushing strengths.
The technical solution adopted in the utility model is: a kind of solid concrete compression strength annulus draw cut method detection device,
Including the T shape cylinder sample being located in solid concrete, the column indenter indentation, miniature screw rod hydraulic jack are successively laid thereon；Institute
The column indenter indentation is stated to connect by spherical bearing with miniature screw rod hydraulic jack head；The miniature screw rod hydraulic jack tail portion
Plectane pedestal is installed；The force application structure for applying draw cut power is installed on the plectane pedestal；It is also installed on the plectane pedestal
There is digital pressure gauge；The plectane perimeter is connected with the L shape counter-force pull ring that can enclose T shape cylinder sample；The T shape
Cylinder sample, the column indenter indentation, miniature screw rod hydraulic jack, plectane pedestal, L shape counter-force pull ring longitudinal axis.The utility model
The T shape cylinder sample in solid concrete is enclosed by L shape counter-force pull ring, then passes through the column indenter indentation, miniature screw rod oil pressure thousand
Jin top and L shape counter-force pull ring apply draw cut power on T shape cylinder sample, until T shape cylinder sample draw cut destroys, read maximum draw
Shear value, and concrete crushing strength is estimated according to the conversion formula established between concrete crushing strength and draw cut force value.
Further, the T shape cylinder sample, upper cylinder and lower cylinder including longitudinal axis.Upper cylindrical
100 ㎜ of body diameter, 30 ㎜ of height；80 ㎜ of lower cylinder diameter, 10 ㎜ of height.Upper cylinder lower surface and lower cylinder
Upper surface connection, lower cylinder lower surface is connect with solid concrete.
Further, the column indenter indentation is steel, 20 ㎜ of diameter.
Further, the plectane pedestal is steel, and periphery is uniformly drilled with 8 connected circular holes.
Further, the force application structure includes a swivel nut communicated with miniature screw rod hydraulic jack, swivel nut and miniature spiral shell
The bar hydraulic jack longitudinal axis is parallel, and screw rod is equipped in swivel nut, and the end of screw rod is equipped with the T-type box spanner for applying draw cut power.
Further, the digital pressure gauge is communicated with miniature screw rod hydraulic jack.
Further, the L shape counter-force pull ring be steel, top torus and lower part torus including longitudinal axis, on
Portion torus lower surface is connect with lower part torus upper surface, and top torus outer diameter is equal to lower part torus outer diameter, along the longitudinal axis
Direction is bisected into four, and original sample is assembled.Top torus internal diameter (100-102) ㎜, lower part torus internal diameter (80-82)
㎜；Top torus top surface is drilled with 8 connecting screw holes corresponding with connected circular hole position on plectane pedestal, and connecting screw hole is internally screwed with
The connection bolt being connected and fixed with plectane pedestal.
The utility model has the beneficial effects that (1) applies draw cut to concrete in carrying out detection process, using detection device
Power measures maximum draw cut force value, estimates concrete according to the conversion formula established between concrete crushing strength and draw cut force value
Compression strength, applied widely, practical, detection is accurate.(2) solve existing solid concrete compression strength cut platen press,
Core sample method, rebound method, ultrasonic-bounce back method, pulling out method, Pulling escape etc. can not accurate and effective detection thickness be less than 80mm and age surpasses
The problem of crossing 2000 days concrete crushing strengths.
Detailed description of the invention
Fig. 1 is the use schematic front view of the utility model.
Fig. 2 is the use schematic top plan view of the utility model.
Fig. 3 is the L shape counter-force pull ring structure schematic top plan view of the utility model.
Specific embodiment
Combined with specific embodiments below the utility model to be further described, but the utility model is not limited to
In these specific embodiments.One skilled in the art would recognize that the utility model covers in Claims scope
All alternatives, improvement project and the equivalent scheme that may include.
Referring to Fig.1-3, a kind of solid concrete compression strength annulus draw cut method detection device, including it is located at solid concrete
T shape cylinder sample 16 in 14 successively lays the column indenter indentation 13, miniature screw rod hydraulic jack 2 thereon；The column indenter indentation 13
It is connect by spherical bearing 12 with miniature 2 head of screw rod hydraulic jack；Miniature 2 tail portion of screw rod hydraulic jack is equipped with
Plectane pedestal 6；The force application structure 1 for applying draw cut power is installed on the plectane pedestal 6；It is also equipped on the plectane pedestal 6
Digital pressure gauge 4；6 periphery of plectane pedestal is connected with the L shape counter-force pull ring 11 that can enclose T shape cylinder sample 16；Institute
It is same to state T shape cylinder sample 16, the column indenter indentation 13, miniature screw rod hydraulic jack 2, plectane pedestal 6, L shape counter-force 11 longitudinal axis of pull ring
Axis.The utility model encloses the T shape cylinder sample 16 in solid concrete 14 by L shape counter-force pull ring 11, then passes through cylinder
Pressure head 13, miniature screw rod hydraulic jack 2 and L shape counter-force pull ring 11 apply draw cut power on T shape cylinder sample 16, until T shape
16 draw cut of cylinder sample destroys, read maximum draw cut force value, and according to establishing between concrete crushing strength and draw cut force value
Conversion formula estimates concrete crushing strength.
T shape cylinder sample 16 described in the present embodiment, upper cylinder and lower cylinder including longitudinal axis.Top circle
100 ㎜ of column diameter, 30 ㎜ of height；80 ㎜ of lower cylinder diameter, 10 ㎜ of height.Upper cylinder lower surface and lower cylindrical
The connection of body upper surface, lower cylinder lower surface is connect with solid concrete.
The column indenter indentation 13 described in the present embodiment is steel, and diameter is 20 ㎜, 20 ㎜ of height.
Plectane pedestal 6 described in the present embodiment is steel, 130 ㎜ of diameter, 20 ㎜ of thickness；Periphery is uniformly drilled with 8 connection circles
Hole 9,7 ㎜ of aperture.
Force application structure 1 described in the present embodiment include a swivel nut 7 communicated with miniature screw rod hydraulic jack 2, swivel nut 7 with it is micro-
Type screw rod 2 longitudinal axis of hydraulic jack are parallel, and screw rod 5 is provided in swivel nut 7, and the end of screw rod 5 is equipped with the T-type for applying draw cut power
Box spanner 3.
Digital pressure gauge 4 described in the present embodiment is communicated with miniature screw rod hydraulic jack 2.
L shape counter-force pull ring 11 described in the present embodiment be steel, top torus and lower part torus including longitudinal axis,
Top torus lower surface is connect with lower part torus upper surface, and top torus outer diameter and lower part torus outer diameter are equal,
For 130 ㎜, four are bisected into along y direction, original sample is assembled.101 ㎜ of top torus internal diameter internal diameter, is highly slightly larger than
(miniature 2 height+spherical bearing of screw rod hydraulic jack, 12+50 ㎜ of height)；81 ㎜ of lower part torus internal diameter, 9 ㎜ of height.Top
Torus top surface is drilled with 8 connecting screw holes 10 corresponding with 9 position of connected circular hole on plectane pedestal 6,6 ㎜ of aperture；Connecting screw hole
10 are internally screwed with the connection bolt 8 being connected and fixed with plectane pedestal 6, specification M6.
The present embodiment detecting step is as follows: (1) modify: 14 surface of solid concrete is polished flat with hand-held concrete sanding machine
It is whole.(2) sample preparation: using the thin diamond wall hollow boring bit each one of 100 ㎜ of internal diameter, 150 ㎜ of internal diameter.It is first that 100 ㎜ of internal diameter is hollow
Drill bit is mounted on the drilling machine that position has been fixed, recessed in the concrete annular that solid concrete 14 drills out about 45 ㎜ of depth
Slot forms 100 ㎜ concrete cylindrical of diameter；150 ㎜ hollow boring bit of internal diameter is changed again, drills out the concrete annular of about 45 ㎜ of depth
Groove removes the concrete between 2 annular grooves, and smooth slot bottom.Using the extension bar hand-held concrete with positioning device
The mating cylindrical sintered diamond bistrique of notch grinder, 10 ㎜ of bistrique thickness, 10 ㎜ of bistrique edge to extension bar edge, bistrique top surface
With 14 surface distance of solid concrete, 30 ㎜, extension bar is close to the revolution grinding of concrete cylindrical side, forms concrete slot grinding 15,
Make at T-shaped cylinder sample 16.(3) positioning is fixed: 4 11 lower part torus of L shape counter-force pull ring are put in concrete slot grinding 15, it is former
Sample is assembled, encloses T shape cylinder sample 16；8 M6 connection bolts 8 are passed through the connected circular hole 9 on plectane pedestal 6, precession L shape
In the connecting screw hole 10 of 11 top surface of counter-force pull ring, tighten.(4) it measures: 3 sets of T-type box spanner on 5 end of screw rod, continuously
Rotating with Uniform screw rod 5 reinforces, and so that the column indenter indentation 13 is held out against 16 surface of T shape cylinder sample, while driving L shape by plectane pedestal 6
Counter-force pull ring 11 is moved up relative to T shape cylinder sample 16, until 16 draw cut of T shape cylinder sample destroys, reads maximum draw cut
Force value, and concrete crushing strength is estimated according to the conversion formula established between concrete crushing strength and draw cut force value.
In the present embodiment, conversion formula is as follows:
Yi=AXi+B
Wherein: the compression strength conversion of i-th of solid concrete 14 when Yi is the annulus draw cut detection device detection used
It is worth (MPa)；Xi is the maximum draw cut force value that i-th of solid concrete 14 is applied to when detecting using annulus draw cut detection device
(N)；A, B is the regression coefficient of regression equation.
Certainly, in addition to above-mentioned formula, concrete crushing strength and the conversion formula of draw cut force value can also be other formula,
It is not restricted to above-mentioned formula.
Claims (7)
1. a kind of solid concrete compression strength annulus draw cut method detection device, it is characterised in that: including being located at solid concrete
In T shape cylinder sample, thereon successively lay the column indenter indentation, miniature screw rod hydraulic jack；The column indenter indentation passes through spherical shape
Support is connect with miniature screw rod hydraulic jack head；The miniature screw rod hydraulic jack tail portion is equipped with plectane pedestal；Institute
State the force application structure for being equipped on plectane pedestal and applying draw cut power；Digital pressure gauge is also equipped on the plectane pedestal；It is described
Plectane perimeter is connected with the L shape counter-force pull ring that can enclose T shape cylinder sample；The T shape cylinder sample, cylinder pressure
Head, miniature screw rod hydraulic jack, plectane pedestal, L shape counter-force pull ring longitudinal axis.
2. a kind of solid concrete compression strength annulus draw cut method detection device according to claim 1, it is characterised in that:
The T shape cylinder sample, upper cylinder and lower cylinder including longitudinal axis；100 ㎜ of upper cylinder diameter,
Highly 30 ㎜；80 ㎜ of lower cylinder diameter, 10 ㎜ of height；Table on the upper cylinder lower surface and lower cylinder
Face connection；The lower cylinder lower surface is connect with solid concrete.
3. a kind of solid concrete compression strength annulus draw cut method detection device according to claim 1, it is characterised in that:
The column indenter indentation is steel, diameter 20mm.
4. a kind of solid concrete compression strength annulus draw cut method detection device according to claim 1, it is characterised in that:
The plectane pedestal is steel, and periphery is uniformly drilled with 8 connected circular holes.
5. a kind of solid concrete compression strength annulus draw cut method detection device according to claim 1, it is characterised in that:
The force application structure includes a swivel nut communicated with miniature screw rod hydraulic jack, swivel nut and the miniature screw rod hydraulic jack longitudinal axis
In parallel, screw rod is equipped in swivel nut, the end of screw rod is equipped in the T-type box spanner for applying draw cut power.
6. according to claim 1 or a kind of solid concrete compression strength annulus draw cut method detection device described in claim 5,
It is characterized by: the digital pressure gauge is communicated with miniature screw rod hydraulic jack.
7. according to claim 1 or a kind of solid concrete compression strength annulus draw cut method detection device as claimed in claim 4,
It is characterized by: the L shape counter-force pull ring is steel, top torus and lower part torus including longitudinal axis, top circle
Ring body lower surface is connect with lower part torus upper surface, and top torus outer diameter is equal to lower part torus outer diameter, along y direction
Four are bisected into, original sample is assembled；Top torus internal diameter (the 100-102) ㎜；The lower part torus internal diameter (80-
82) ㎜；Top torus top surface is drilled with 8 connecting screw holes corresponding with connected circular hole position on plectane pedestal, connects spiral shell
Hole is internally screwed with the connection bolt being connected and fixed with plectane pedestal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822054472.1U CN209148447U (en) | 2018-12-08 | 2018-12-08 | A kind of solid concrete compression strength annulus draw cut method detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822054472.1U CN209148447U (en) | 2018-12-08 | 2018-12-08 | A kind of solid concrete compression strength annulus draw cut method detection device |
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| CN209148447U true CN209148447U (en) | 2019-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289370A (en) * | 2018-12-08 | 2020-06-16 | 程彦 | Solid concrete compressive strength ring stretch-cutting method detection device |
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2018
- 2018-12-08 CN CN201822054472.1U patent/CN209148447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289370A (en) * | 2018-12-08 | 2020-06-16 | 程彦 | Solid concrete compressive strength ring stretch-cutting method detection device |
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