CN108680442A - A kind of built-in hanger shear strength test device and detection method - Google Patents
A kind of built-in hanger shear strength test device and detection method Download PDFInfo
- Publication number
- CN108680442A CN108680442A CN201810891659.9A CN201810891659A CN108680442A CN 108680442 A CN108680442 A CN 108680442A CN 201810891659 A CN201810891659 A CN 201810891659A CN 108680442 A CN108680442 A CN 108680442A
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- China
- Prior art keywords
- steel plate
- built
- hanger
- reinforcing bar
- power transmission
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
Abstract
The invention belongs to research and development application of result fields, more particularly to a kind of built-in hanger shear strength test device and detection method.Including steel plate A, channel steel supporting leg, power transmission reinforcing bar, base material concrete, annulus angle steel, built-in hanger, fixture, force snesor, steel plate B, punching jack and steel plate C；The steel plate A is circular steel plate, steel plate A, channel steel supporting leg and annulus angle steel are welded as circular platform type supporting rack, steel plate A is the top of circular platform type supporting rack, circular platform type supporting rack is set on base material concrete, base material concrete is placed on the ground, and channel steel supporting leg and the angle of annulus angle steel are 45 ° 60 °；The centrally disposed circular hole of the steel plate A, circular hole are not contacted with power transmission reinforcing bar；The present invention solves the problems, such as that no earth anchor, the laboratory without large-scale tension equipment cannot complete built-in hanger shearing test.Present invention design is simple, is easy to manufacture and use, can not only save test period but also can save experimentation cost.
Description
Technical field
The invention belongs to research and development application of result fields, are tried more particularly to a kind of built-in hanger shear strength
Experiment device and detection method.
Background technology
For built-in hanger during practical implementation, the lifting of various forms of prefabricated components can make its appearance a variety of
Stress form, but total cognition is divided into tension, is cut, draws and cut three kinds of stressing conditions of coupling.Since built-in hanger stress will exist
May be there is a situation where various failure modes, how to avoid the possibility destroyed in use just becomes one urgently
It solves the problems, such as, this just needs a set of ripe, reliable detection method.Domestic precast concrete is numerous with built-in hanger type
More, number of applications is big, has a wide range of application.But there is no the unified experimental rig of built-in hanger testing shear performance and experiments at present
Method, many relevant detection devices are due to device itself, and built-in hanger is while being cut, also in the work of bending moment
With it is not ideally to be acted on by pure shear, therefore other detection devices can not accurate evaluation to lead to built-in hanger
Built-in hanger shear behavior causes engineering safety assessment uncertain big, and design selection is uncertain big, and built-in hanger is caused to exist
There is more problems during use.
Invention content
In order to solve the above technical problem, the present invention provides a kind of built-in hanger shear strength test device and detection sides
Method can be realized the shearing test of built-in hanger using the self-reaction force of component itself in the laboratory of no earth anchor, both save examination
Test the time reduces cost consumption again, has good stress performance and enough bearing capacities, and be easily installed.
The technical solution adopted by the present invention is：
A kind of built-in hanger shear strength test device, including steel plate A, channel steel supporting leg, power transmission reinforcing bar, base material concrete, annulus
Angle steel, built-in hanger, fixture, force snesor, steel plate B, punching jack and steel plate C；
The steel plate A is circular steel plate, and steel plate A, channel steel supporting leg and annulus angle steel are welded as circular platform type supporting rack, and steel plate A is
The top of circular platform type supporting rack, circular platform type supporting rack are set on base material concrete, and base material concrete is placed on the ground, slot
The angle of steel leg and annulus angle steel is 45 ° -60 °；The centrally disposed circular hole of the steel plate A, circular hole do not connect with power transmission reinforcing bar
It touches, power transmission reinforcing bar is welded to connect across the circular hole of steel plate A with steel plate C；The steel plate C is square plate, centrally disposed bolt
Hole, steel plate C are bolted with built-in hanger；Built-in hanger is set to the center of base material concrete side, and built-in hanger exposes base
The part of material concrete is located at the underface of the circular hole of steel plate A；Punching jack passes through power transmission steel-bar arrangement on steel plate A；
The centrally disposed circular hole of steel plate B, circular hole pass through power transmission reinforcing bar, steel plate B to be placed on punching jack；Force snesor passes through power transmission
Reinforcing bar is placed on steel plate B；Fixture is placed in across power transmission reinforcing bar on force snesor, and fixture is used for fixing force transfer reinforcing bar；Punching
Jack is lifted power transmission reinforcing bar, and power transmission reinforcing bar drives steel plate C to be promoted, and realizes the shearing to built-in hanger.
Further, the channel steel supporting leg is set as four, the vertical plane where adjacent two channel steel supporting legs
Angle is 90 °.
Further, the steel plate A is circle, and a diameter of 300~450mm, thickness is 30~45mm, Circularhole diameter
For 50~60mm.
Further, the annulus angle steel list limb a height of 35~40mm, a diameter of 1200~1500mm.
Further, the centrally disposed bolts hole of steel plate C, diameter of bolt hole are 20~50mm.
Further, the base material concrete is I-shaped concrete, and centre concaves 500~800mm.
A kind of detection method of built-in hanger shear strength, includes the following steps：
(1) base material concrete is placed on smooth ground；
(2) circular platform type support is placed on base material concrete, upper plane and the base material concrete of circular platform type supporting rack need
It is maintained on same level surface, built-in hanger is set to the center of base material concrete side, and built-in hanger exposes base material concrete
Part be located at steel plate A circular hole underface；
(3) power transmission reinforcing bar is connected across steel plate A with steel plate C, and is connected with built-in hanger by the bolt hole of steel plate C；
(4) punching jack, steel plate B, force snesor, fixture are sequentially passed through into power transmission reinforcing bar and is positioned over circular platform type cradle top
On steel plate A, by fixture fixing force transfer reinforcing bar, the center of punching jack and force snesor can be with power transmission reinforcing bar and pre-buried
The center of hanging piece exposed portion keeps coaxial, and power transmission reinforcing bar does not contact intermediate experimental rig, reduces frictional force, ensures shearing force
Built-in hanger can be transferred completely into；
(5) displacement meter bearing being fixed on power transmission reinforcing bar, displacement meter pointer is placed on the concrete sample outside destroyed area,
Ensure the accuracy of displacement meter measurement result；
(6) manual loading punching jack is lifted power transmission reinforcing bar, is completed to pre- using the self-locking system of shear strength test device
Bury the cutting performance detection of hanging piece.
The advantageous effect of patent of the present invention is:
The advantages of the present invention are that the present invention provides a kind of built-in hanger shear strength test device and detection sides
Method, the present invention can make built-in hanger to be measured while being cut, not the effect of bending moment so that built-in hanger is ideally
It is acted on by pure shear；It is solid that traditional built-in hanger shear strength test loading device must have the ground such as ground beam, foundation bolt
Determine device, and device complex installation process, it is time-consuming and laborious.Present invention mainly solves without earth anchor, without large-scale tension equipment
Laboratory cannot complete the problem of built-in hanger shearing test, and disclosure satisfy that the required precision of shearing test；The present invention designs
Simply, it is easy to manufacture and use, steel plate C can be replaced according to built-in hanger model, can not only test period be saved but also can save
Experimentation cost；The present invention can more embody the convenience of the present invention under the experiment of a large amount of repeatability.One built-in hanger has detected
Cheng Hou need to only back out bolt, can be tested in replacement to another built-in hanger to be measured, without carrying out excessive welding
Operation；The present invention uses I-shaped concrete, the dosage of concrete can be saved, to save experimentation cost.
Description of the drawings
Fig. 1 is a kind of built-in hanger shear strength test device axonometric drawing.
Fig. 2 is a kind of built-in hanger shear strength test device front view.
Fig. 3 is a kind of built-in hanger shear strength test device vertical view.
Fig. 4 is a kind of built-in hanger shear strength test device left view.
In figure：1 is steel plate A；2 be channel steel supporting leg；3 be power transmission reinforcing bar；4 be base material concrete；5 be annulus angle steel；6 be pre-
Bury hanging piece；7 be fixture；8 be force snesor；9 be steel plate B；10 be punching jack；11 be steel plate C.
Specific implementation mode
In order to further illustrate the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments, but not
They can be interpreted as limiting the scope of the present invention：
Embodiment：As Figure 1-Figure 4, a kind of built-in hanger shear strength test device, including steel plate A1, channel steel supporting leg 2, biography
Power reinforcing bar 3, base material concrete 4, annulus angle steel 5, built-in hanger 6, fixture 7, force snesor 8, steel plate B9,10 and of punching jack
Steel plate C11；
The steel plate A1 is circular steel plate, and a diameter of 300~450mm of steel plate A1, thickness is 30~45mm, and Circularhole diameter is
50~60mm, steel plate A1, channel steel supporting leg 2 and annulus angle steel 5 are welded as circular platform type supporting rack, and steel plate A1 is circular platform type supporting rack
Top, circular platform type supporting rack are set on base material concrete 4, and base material concrete 4 is placed on the ground, and base material concrete 4 is
I-shaped concrete, centre concave 500~800mm, and channel steel supporting leg 2 and the angle of annulus angle steel 5 are 45 ° -60 °, channel steel branch
Leg 2 is set as four, and the angle of the vertical plane where adjacent two channel steel supporting legs 2 is 90 °, and the single limb of annulus angle steel 5 is a height of
35~40mm, a diameter of 1200~1500mm；The centrally disposed circular hole of the steel plate A1, circular hole are not contacted with power transmission reinforcing bar 3,
Power transmission reinforcing bar 3 is welded to connect across the circular hole of steel plate A1 with steel plate C11；The steel plate C11 is square plate, centrally disposed spiral shell
Keyhole, diameter of bolt hole are 20~50mm, and steel plate C11 is bolted with built-in hanger 6；Built-in hanger 6 is set to base material coagulation
The center of native 4 sides, the part of the exposing base material of built-in hanger 6 concrete 4 are located at the underface of the circular hole of steel plate A1；Punching is very heavy
Top 10 is set to across power transmission reinforcing bar 3 on steel plate A1；The centrally disposed circular hole of steel plate B9, circular hole pass through power transmission reinforcing bar 3, steel plate
B9 is placed on punching jack 10；Force snesor 8 is placed in across power transmission reinforcing bar 3 on steel plate B9；Fixture 7 passes through power transmission reinforcing bar
3 are placed on force snesor 8, and fixture 7 is used for fixing force transfer reinforcing bar 3；Punching jack 10 is lifted power transmission reinforcing bar 3, power transmission reinforcing bar 3
Steel plate C11 is driven to be promoted；Realize the shearing to built-in hanger 6.
Supporting rack is positioned on base material concrete 4, and ensures that the power transmission reinforcing bar 3 for being welded with steel plate C11 is perpendicular to the ground,
It avoids generating drawing load in shear history；The hole of round plate 1 is passed through to be hung with pre-buried the power transmission reinforcing bar 3 for being welded with steel plate C11
Part 6 is bolted together, and effect is by Shear transfer by power transmission reinforcing bar 3 to built-in hanger 6；Punching jack 10 is placed
On top round plate 1, top pading plate B9, effect is to be by promotion and 6 bolted power transmission reinforcing bar 3 of built-in hanger
Built-in hanger provides a shearing force straight up；Force snesor 8 is positioned on steel plate B9, and fixture 7 is fixed on
On force snesor 8, effect is to make steel plate B9, force snesor 8, fixture 7 and power transmission reinforcing bar 3 and form an entirety, is led to
Punching jack lifting steel plate B9 is crossed, power is applied to power transmission reinforcing bar 3, acquiring punching jack 10 by force snesor 8 applies
Give power transmission reinforcing bar（3）Pulling force.
The diameter of annulus angle steel 5 can be determined according to the size of base material concrete, be maintained at according to the angle on supporting leg and ground
Between 45 ° -60 ° and the diameter of steel plate A1, the size of entire supporting rack is determined.
A kind of detection method of built-in hanger shear strength, includes the following steps：
(1) base material concrete 4 is placed on smooth ground；
(2) circular platform type support is placed on base material concrete 4, upper plane and the base material concrete 4 of circular platform type supporting rack
It need to be maintained on same level surface, built-in hanger 6 is set to the center of 4 side of base material concrete, and it is mixed that built-in hanger 6 exposes base material
The part of solidifying soil 4 is located at the underface of the circular hole of steel plate A1；
(3) power transmission reinforcing bar 3 is connected across steel plate A1 with steel plate C11, and passes through the bolt hole of steel plate C11 and 6 phase of built-in hanger
Even；
(4) punching jack 10, steel plate B9, force snesor 8, fixture 7 are sequentially passed through into power transmission reinforcing bar 3 and is positioned over circular platform type holder
On the steel plate A1 at top, by 7 fixing force transfer reinforcing bar 3 of fixture, the center of punching jack 4 and force snesor 8 can be with biography
The center of 6 exposed portion of power reinforcing bar 3 and built-in hanger keeps coaxial, and power transmission reinforcing bar 3 does not contact intermediate experimental rig, and reduction rubs
Power is wiped, ensures that shearing force can be transferred completely into built-in hanger 6；
(5) displacement meter bearing is fixed on power transmission reinforcing bar 3, displacement meter pointer is placed on the concrete sample outside destroyed area
On, ensure the accuracy of displacement meter measurement result；
(6) manual loading punching jack 10 is lifted power transmission reinforcing bar 3, utilizes the self-locking system completion pair of shear strength test device
The cutting performance of built-in hanger 9 detects.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of built-in hanger shear strength test device, it is characterised in that：Including steel plate A（1）, channel steel supporting leg（2）, power transmission steel
Muscle（3）, base material concrete（4）, annulus angle steel（5）, built-in hanger（6）, fixture（7）, force snesor（8）, steel plate B（9）, punching
Jack（10）With steel plate C（11）；
The steel plate A（1）For circular steel plate, steel plate A（1）, channel steel supporting leg（2）With annulus angle steel（5）It is welded as circular platform type branch
Support, steel plate A（1）For the top of circular platform type supporting rack, circular platform type supporting rack is set to base material concrete（4）On, base material is mixed
Solidifying soil（4）It places on the ground, channel steel supporting leg（2）With annulus angle steel（5）Angle be 45 ° -60 °；The steel plate A's (1)
Centrally disposed circular hole, circular hole and power transmission reinforcing bar（3）It does not contact, power transmission reinforcing bar（3）Across steel plate A（1）Circular hole and steel plate C（11）
It is welded to connect；The steel plate C（11）For square plate, centrally disposed bolt hole, steel plate C（11）With built-in hanger（6）Bolt
Connection；Built-in hanger（6）It is set to base material concrete（4）The center of side, built-in hanger（6）Expose base material concrete（4）'s
Part is located at steel plate A（1）Circular hole underface；Punching jack（10）Across power transmission reinforcing bar（3）It is set to steel plate A（1）It
On；Steel plate B（9）Centrally disposed circular hole, circular hole pass through power transmission reinforcing bar（3）, steel plate B（9）It is placed in punching jack（10）On；
Force snesor（8）Across power transmission reinforcing bar（3）It is placed in steel plate B（9）On；Fixture（7）Across power transmission reinforcing bar（3）It is placed in force snesor
（8）On, fixture（7）For fixing force transfer reinforcing bar（3）；Punching jack（10）It is lifted power transmission reinforcing bar（3）, power transmission reinforcing bar（3）
Drive steel plate C（11）It is promoted, is realized to built-in hanger（6）Shearing.
2. according to a kind of built-in hanger shear strength test device described in claim 1, it is characterised in that：The channel steel
Supporting leg（2）Four are set as, adjacent two channel steel supporting legs（2）The angle of the vertical plane at place is 90 °.
3. according to a kind of built-in hanger shear strength test device described in claim 1, it is characterised in that：The steel plate
A（1）For circle, a diameter of 300~450mm, thickness is 30~45mm, and Circularhole diameter is 50~60mm.
4. according to a kind of built-in hanger shear strength test device described in claim 1, it is characterised in that：The annulus angle
Steel（5）The single a height of 35~40mm of limb, a diameter of 1200~1500mm.
5. a kind of built-in hanger shear strength test device according to claim 1, it is characterised in that：The steel plate C
（11）Centrally disposed bolt hole, diameter of bolt hole are 20~50mm.
6. a kind of built-in hanger shear strength test device according to claim 1, it is characterised in that：The base material is mixed
Solidifying soil（4）For I-shaped concrete, centre concaves 500~800mm.
7. a kind of detection method of built-in hanger shear strength, it is characterised in that：Include the following steps：
(1) by base material concrete（4）It is placed on smooth ground；
(2) circular platform type support is placed on base material concrete（4）On, upper plane and the base material concrete of circular platform type supporting rack
（4）It need to be maintained on same level surface, built-in hanger（6）It is set to base material concrete（4）The center of side, built-in hanger（6）
Expose base material concrete（4）Part be located at steel plate A（1）Circular hole underface；
(3) by power transmission reinforcing bar（3）Across steel plate A（1）With steel plate C（11）It is connected, and passes through steel plate C（11）Bolt hole with it is pre-buried
Hanging piece（6）It is connected；
(4) by punching jack（10）, steel plate B（9）, force snesor（8）, fixture（7）Sequentially pass through power transmission reinforcing bar（3）It is positioned over
The steel plate A of circular platform type cradle top（1）On, pass through fixture（7）Fixing force transfer reinforcing bar（3）, punching jack（4）It is sensed with power
Device（8）Center can be with power transmission reinforcing bar（3）And built-in hanger（6）The center of exposed portion keeps coaxial, power transmission reinforcing bar（3）No
Intermediate experimental rig is contacted, frictional force is reduced, ensures that shearing force can be transferred completely into built-in hanger（6）；
(5) displacement meter bearing is fixed on power transmission reinforcing bar（3）On, displacement meter pointer is placed on the concrete sample outside destroyed area
On, ensure the accuracy of displacement meter measurement result；
(6) manual loading punching jack（10）It is lifted power transmission reinforcing bar（3）, the self-locking system using shear strength test device is complete
Pairs of built-in hanger（9）Cutting performance detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891659.9A CN108680442A (en) | 2018-08-07 | 2018-08-07 | A kind of built-in hanger shear strength test device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891659.9A CN108680442A (en) | 2018-08-07 | 2018-08-07 | A kind of built-in hanger shear strength test device and detection method |
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| Publication Number | Publication Date |
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| CN108680442A true CN108680442A (en) | 2018-10-19 |
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ID=63815666
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| CN201810891659.9A Pending CN108680442A (en) | 2018-08-07 | 2018-08-07 | A kind of built-in hanger shear strength test device and detection method |
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| CN104563168A (en) * | 2014-12-09 | 2015-04-29 | 常州市安贞建设工程检测有限公司 | Multifunctional bend resistance and shear resistance device of prestressed concrete pipe pile |
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2018
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|---|---|---|---|---|
| JPH0783821A (en) * | 1993-09-09 | 1995-03-31 | Nishimatsu Constr Co Ltd | Method and device for exposure test of elastic-adhesive tiling |
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