CN205280514U - Device for measuring bonding shear strength of cast-in-place concrete and precast concrete of superposed shear wall - Google Patents
Device for measuring bonding shear strength of cast-in-place concrete and precast concrete of superposed shear wall Download PDFInfo
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- CN205280514U CN205280514U CN201620009747.8U CN201620009747U CN205280514U CN 205280514 U CN205280514 U CN 205280514U CN 201620009747 U CN201620009747 U CN 201620009747U CN 205280514 U CN205280514 U CN 205280514U
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- concrete
- bar
- shear wall
- onsite
- precast
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- 239000004567 concrete Substances 0.000 title claims abstract description 66
- 239000011178 precast concrete Substances 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 abstract 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000011376 self-consolidating concrete Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004574 high-performance concrete Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a measure superimposed shear wall cast in situ concrete and precast concrete bonding shear strength's device, including base, jack, force sensor, insulated wire, steel accessory, ring flange, bolt, cut a concrete, load collection appearance. The base is erected on the ground, a wall, a column or a reaction frame, and the jack is erected on the base. One end of the force sensor is connected with the jack through a connecting piece, and the other end of the force sensor is connected with the steel fitting through a connecting piece. And an insulated wire of the force sensor is connected with the load acquisition instrument. One end of the steel fitting is provided with a protruding part which is embedded into a cutting bar concrete part in the superposed shear wall. The utility model discloses the device can really measure superimposed shear wall cast in situ concrete and precast concrete bonding shear strength under the condition in different places, has nimble dismantlement moreover, cyclic utilization, advantage such as with low costs.
Description
Technical field
The utility model relates to a kind of detection device, is specifically related to a kind of device and the method for measuring overlapped shear wall onsite concrete and precast concrete bonding shear strength.
Background technology
Along with the development of building industry, superimposed energy-conservation shear wall arises at the historic moment. This is a kind of concrete assembly structure system, and its principle mainly adopts the superimposed beam of prefabricated reinforced concrete, plate, is linked to be entirety by watering the Jiang Qiang such as part, plate and node after built-in fitting, Steel Concrete, forms integral structural system. Self-compacting high performance concrete is used for the intensive superimposed body of wall of reinforcing bar by superimposed wall body structure, give full play to the common advantage of self-compacting high performance concrete and superimposed body of wall, reduce the difficulty of superimposed wall body structure concrete construction, save labour, alleviate environmental pollution, avoid causing the quality defects such as cavity because vibrating or vibrate deficiency.
Overlapped shear wall is made up of two dry wall sheets and truss reinforcing bar, the truss reinforcing bar in wallboard be by lower edge reinforcing bar connected by belly reinforcement welding, each welded spot pitch 200mm. Two panels precast wall body becomes overall by truss bar connecting, and two panels precast wall body is had drawknot effect. Casting concrete in the cavities after completing to on-site consolidation so that overlapped shear wall structure has prefabricated structure industrialization degree height and the strong advantage of full cast-in-place structural overall performance simultaneously.
But, onsite concrete and precast wall body bond only exist by the power stage certain completely, when the shearing stress on certain section of novel concrete cross section rises to a certain degree, producing certain Relative sliding between them, especially in superposed type concrete member, its Relative sliding is more obvious. Can ensure that superimposed body of wall has excellent overall performance be the key that this energy-saving structure system is applied, and the impact of engineering structure is the important technology of superimposed energy-saving wall by precast wall body and cast-in-place self-compacting concrete interfacial bond property. Simultaneously, though the configuration of the suitability for industrialized production of prefabricated panel and self-compacting concrete is comparatively ripe, but for the research of precast wall body and cast-in-place self-compacting concrete interfacial bond property and detection, but some lacks, and the mechanism evaluating this kind of superimposed energy-saving wall interfacial bond property is not also formed.
Practical novel content
The purpose of this utility model is to provide a kind of measures overlapped shear wall onsite concrete and the device of precast concrete bonding shear strength, and carries out field survey detection at engineering site. This kind of device not only meets at experiment Indoor measurement onsite concrete and precast concrete bonding shear strength, and considers the adhesive property of onsite concrete and precast concrete in engineering so that engineering survey value is more true.
The technical solution adopted in the utility model is: a kind of measure overlapped shear wall onsite concrete and the device of precast concrete bonding shear strength, comprise base, screw block, force transducer, steel beam column, ring flange, cut bar concrete, onsite concrete, precast concrete and load Acquisition Instrument;
Described base is fixed on ground or counter-force frame, described screw block is arranged on base by ring flange, described force transducer is arranged on screw block by ring flange, and described steel beam column is arranged on force transducer by ring flange, and force transducer is connected with load Acquisition Instrument by insulated line;
The described bar concrete that cuts becomes in the cutting of overlapped shear wall surface, overlapped shear wall is made up of two pre-cast concrete walling sheet central filler onsite concretes, cutting the concrete shape of bar is rectangular parallelepiped, the length of rectangular parallelepiped is 200mm-300mm, width is 200mm, and thickness is identical with precast concrete, cuts and leaves space around the concrete top of bar and both sides, the width in space is 20mm-30mm, cuts the position left below bar concrete and place steel beam column;
The convex part of described steel beam column upper end embeds and cuts below bar concrete, and with cut bar concrete lower surface and contact, contact area is 400mm �� 150mm.
As preferably, described in cut the concrete length of bar be 300mm, width is 200mm, and the width cutting the concrete top of bar and space, both sides is 30mm.
A kind of the measurement overlapped shear wall onsite concrete of said apparatus and the method for precast concrete bonding shear strength is adopted to be: manually hydraulic control screw block is to control the displacement of steel beam column, make to cut bar concrete and onsite concrete generation shear fracture, read the load P of shear fracture by force transducer; The slip resistance of interface bonding can by formula:
In formula, F is interface bonding shear strength; P is failing load; A is the area cutting bar concrete and onsite concrete bonding.
The utility model device mainly measures in overlapped shear wall the bonding between onsite concrete and precast concrete, also can measure the adhesive property between New-old concrete.
Useful effect: the adhesive property that the utility model is difficult to measure really precast concrete and onsite concrete to overcome under on-the-spot complicated environment, for overlapped shear wall overall performance lays the foundation, is also detection adhesive property offer method; It is simple and clear that the utility model has device, is easy to dismounting, and testing process ratio is easier to left-hand seat, and economy is ensured; And can according to field condition needs, the adhesive property between precast concrete and cast-in-place self-compacting concrete is studied in the position change steel beam column, cutting bar concrete size and pedestal for placed.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the side-view of Fig. 1;
Fig. 3 is that the utility model cuts bar concrete dimensioned drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
As Figure 1-3, measure overlapped shear wall onsite concrete and a device for precast concrete bonding shear strength, comprise base 1, screw block 2, force transducer 3, steel beam column 4, ring flange 5, cut bar concrete 6, onsite concrete 7, precast concrete 8 and load Acquisition Instrument;
Described base 1 is fixed on ground or counter-force frame, described screw block 2 is arranged on base 1 by ring flange 5, described force transducer 3 is arranged on screw block 2 by ring flange 5, described steel beam column 4 is arranged on force transducer 3 by ring flange 5, and force transducer 3 is connected with load Acquisition Instrument by insulated line;
The described bar concrete 6 that cuts becomes in the cutting of overlapped shear wall surface, overlapped shear wall is made up of two precast concrete 8 wall sheet central filler onsite concretes 7, the shape cutting bar concrete 6 is rectangular parallelepiped, the length of rectangular parallelepiped is 300mm, width is 200mm, and thickness is identical with precast concrete 8, cuts and leaves space around the top of bar concrete 6 and both sides, the width in space is 30mm, cuts the position left below bar concrete 6 and place steel beam column 4;
The convex part of described steel beam column 4 upper end embeds and cuts below bar concrete 6, and with cut bar concrete 6 lower surface and contact, contact area is 400mm �� 150mm.
Manually hydraulic control screw block 2 controls the displacement of steel beam column so that cuts bar concrete 6, with onsite concrete 8, shear fracture occurs, reads the load P of shear fracture by force transducer 3. The slip resistance of interface bonding can by formula:
In formula, F is interface bonding shear strength; P is failing load; A is the area cutting bar concrete and onsite concrete bonding.
Below by reference to the accompanying drawings enforcement mode of the present utility model is described in detail, but the utility model is not limited to described enforcement mode. For the those of ordinary skill of this area, in the scope of principle of the present utility model and technological thought, these enforcement modes are carried out multiple change, amendment, replacement and distortion and still falls in protection domain of the present utility model.
Claims (2)
1. measure overlapped shear wall onsite concrete and the device of precast concrete bonding shear strength for one kind, it is characterised in that: comprise base, screw block, force transducer, steel beam column, ring flange, cut bar concrete, onsite concrete, precast concrete and load Acquisition Instrument;
Described base is fixed on ground or counter-force frame, described screw block is arranged on base by ring flange, described force transducer is arranged on screw block by ring flange, and described steel beam column is arranged on force transducer by ring flange, and force transducer is connected with load Acquisition Instrument by insulated line;
The described bar concrete that cuts becomes in the cutting of overlapped shear wall surface, overlapped shear wall is made up of two pre-cast concrete walling sheet central filler onsite concretes, cutting the concrete shape of bar is rectangular parallelepiped, the length of rectangular parallelepiped is 200mm-300mm, width is 200mm, and thickness is identical with precast concrete, cuts and leaves space around the concrete top of bar and both sides, the width in space is 20mm-30mm, cuts the position left below bar concrete and place steel beam column;
The convex part of described steel beam column upper end embeds and cuts below bar concrete, and with cut bar concrete lower surface and contact, contact area is 400mm �� 150mm.
2. according to claim 1 a kind of measure overlapped shear wall onsite concrete and the device of precast concrete bonding shear strength, it is characterized in that: described in cut the concrete length of bar be 300mm, width is 200mm, and the width cutting the concrete top of bar and space, both sides is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620009747.8U CN205280514U (en) | 2016-01-06 | 2016-01-06 | Device for measuring bonding shear strength of cast-in-place concrete and precast concrete of superposed shear wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620009747.8U CN205280514U (en) | 2016-01-06 | 2016-01-06 | Device for measuring bonding shear strength of cast-in-place concrete and precast concrete of superposed shear wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205280514U true CN205280514U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620009747.8U Expired - Fee Related CN205280514U (en) | 2016-01-06 | 2016-01-06 | Device for measuring bonding shear strength of cast-in-place concrete and precast concrete of superposed shear wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510155A (en) * | 2016-01-06 | 2016-04-20 | 南京工业大学 | Device and method for measuring bonding shear strength of cast-in-place concrete and precast concrete of superposed shear wall |
-
2016
- 2016-01-06 CN CN201620009747.8U patent/CN205280514U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510155A (en) * | 2016-01-06 | 2016-04-20 | 南京工业大学 | Device and method for measuring bonding shear strength of cast-in-place concrete and precast concrete of superposed shear wall |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20210106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |