CN113740517A - Test device and test method for detecting grouting forming quality of steel pipe column base - Google Patents
Test device and test method for detecting grouting forming quality of steel pipe column base Download PDFInfo
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- CN113740517A CN113740517A CN202110932175.6A CN202110932175A CN113740517A CN 113740517 A CN113740517 A CN 113740517A CN 202110932175 A CN202110932175 A CN 202110932175A CN 113740517 A CN113740517 A CN 113740517A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims description 29
- 239000012780 transparent material Substances 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000005337 ground glass Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000009415 formwork Methods 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Ceramic Engineering (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a test device and a test method for detecting the grouting forming quality of a steel pipe column base, which provide a basis for detecting the contact surface area of a steel pipe column base plate and grouting material, provide process parameter data support for the construction quality of the grouting material of an engineering entity and achieve the optimal construction effect; by using the device, the use amount of engineering entity materials is accurately controlled, and the cost is reduced; the method can be used as a process template, so that quality awareness of project management personnel is improved; the method is widely applied to similar working conditions of high-rise and super high-rise projects, and has a popularization effect.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a test device and a test method for detecting grouting forming quality of a steel pipe column base.
Background
The building industry becomes one of the rapidly developing industries in China at present, and with the continuous improvement of the living standard of people, the requirements for buildings are continuously increased, and the higher and higher buildings are one of the concrete embodiments of the requirements. The steel structure has the comprehensive advantages of short construction period, light dead weight, good earthquake resistance, less environmental pollution and the like, so the steel structure is widely applied to buildings. The application of the steel structure, especially the application in super high-rise buildings (such as a steel pipe concrete-core tube structure) promotes the development of the building industry in China.
The common connection method of the steel pipe column and the concrete foundation is to pre-embed foundation bolts, and in order to meet the requirements of closely contacting the bottom plate and evenly transmitting load, a filling grouting process (secondary grouting) is performed between the bottom surface of the bottom plate of the steel column base and the surface of the concrete foundation. The common construction method comprises the following steps: grouting by a dead weight method, grouting by a high-position funnel method and grouting by a pressure method. GB/T50448-: taking the test data of the compressive strength sample test block under the standard curing condition as acceptance data; the number of the remaining groups in the curing time under the same condition is determined according to actual needs.
The prior art standard only takes the test block strength of keeping somewhere when the grout material is under construction as the acceptance criterion, and for cement-based grouting material, the actual area of contact of grout blanket and steel-pipe column foot bottom plate is very important, directly influences the size of transmission load effect and then influences engineering quality. Grouting material construction belongs to concealed engineering, and no method for accurately measuring the contact area of grouting material and a steel pipe column foot bottom plate exists at present.
Therefore, it is a problem worthy of research to provide a test device and a test method for detecting the grouting forming quality of a steel pipe column base, which are convenient for observing the number of the air holes on the surface of the grouting material after forming and the contact area of the grouting material and the steel pipe column base.
Disclosure of Invention
The invention aims to provide a test device and a test method for detecting the grouting forming quality of a steel pipe column base, which are convenient for observing the number of surface air holes after grouting material forming and the contact area of the grouting material and the steel pipe column base.
The purpose of the invention is realized as follows:
the utility model provides a test device for detecting steel pipe column base grout shaping quality, includes the support frame, with the top fixed connection's of support frame concrete slab, still include with concrete slab's last fixed surface be connected a plurality of cushion, with the last fixed surface be connected's of cushion clamp plate, the grout is located between concrete slab and the clamp plate, the clamp plate adopts transparent material.
The thickness of the pressing plate is 12-15 mm, and the pressing plate is made of ground glass.
The pressing plate is provided with a plurality of exhaust holes, and the aperture of each exhaust hole is 20-25 mm.
And a cylinder body for bearing applied pressure is arranged on the upper surface of the pressing plate.
The concrete slab's upper surface is equipped with a plurality of templates, and a plurality of templates connect gradually end to end and constitute the standing groove, and clamp plate, cushion are located the standing groove.
The template is made of transparent materials.
A test method of a test device for detecting the grouting forming quality of a steel pipe column base comprises the following steps: (1) manufacturing a test device for detecting the grouting forming quality of the steel pipe column base; (2) manufacturing grouting material; (3) filling the grouting material in the step (2) into the test device in the step (1), observing the number and the area of the air holes on the grouting surface through a pressing plate, and recording experimental data; (4) and (3) optimization test: the optimal construction effect is achieved by adjusting the mixing proportion of the grouting materials, controlling the pouring time and the amount of the poured grouting materials.
The specific operation process of the step (1) is as follows: (1.1) erecting a support frame by using a steel pipe fastener, paving a template on the support frame, pouring concrete with a certain thickness on the template, and performing chiseling treatment to form a concrete slab so as to fix the support frame and the concrete slab; (1.2) arranging a cushion block on the upper surface of a concrete slab, fixing a pressing plate on the top of the cushion block, wherein a plurality of exhaust holes are formed in the pressing plate, so that air bubbles can be exhausted conveniently; (1.3) a plurality of templates are arranged on the concrete slab, the templates are fixed on the upper surface of the concrete slab, and the templates are sequentially connected end to form a placing groove.
The specific operation process of the step (2) is as follows: and (3) after the grouting raw materials are proportioned according to the designed proportion, stirring by stirring equipment to form grouting material.
Has the positive and beneficial effects that: the method provides a basis for detecting the contact surface area of the steel pipe column foot bottom plate and the grouting material, provides process parameter data support for the construction quality of the grouting material of the engineering entity, and achieves the optimal construction effect; by using the device, the use amount of engineering entity materials is accurately controlled, and the cost is reduced; the method can be used as a process template, so that quality awareness of project management personnel is improved; the method is widely applied to similar working conditions of high-rise and super high-rise projects, and has a popularization effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along the line A-A;
in the figure, the following steps are carried out: concrete slab 1, template 2, clamp plate 3, barrel 4, exhaust hole 5, cushion 6, support frame 7.
Detailed Description
The invention is further illustrated by the following figures and examples.
Example 1
As shown in fig. 1 and 2, a test device for detecting the grouting forming quality of a steel pipe column base comprises a support frame 7, a concrete slab 1 fixedly connected with the top of the support frame 7, a plurality of cushion blocks 6 fixedly connected with the upper surface of the concrete slab 1, and a pressing plate 3 fixedly connected with the upper surface of the cushion blocks 6, wherein grouting material is located between the concrete slab 1 and the pressing plate 3, and the pressing plate 3 is made of transparent material. The thickness of clamp plate 3 is 12~15mm, and clamp plate 3 adopts the ground glass material, is convenient for observe the condition on grouting material surface to accurate survey grouting material and steel-pipe column foot bottom plate area of contact. The pressing plate 3 is provided with a plurality of exhaust holes 5, and the aperture of each exhaust hole 5 is 20-25 mm.
The upper surface of the pressing plate 3 is provided with a cylinder 4 for bearing applied pressure, the cushion block 6 is equivalent to a bolt for fixing a steel pipe column base plate and the concrete slab 1, the pressing plate 3 is equivalent to a steel pipe column base plate, the cylinder 4 is equivalent to a steel pipe column base plate, the testing device simulates a grouting structure of the steel pipe column base plate, a basis is provided for detecting the contact surface area of the steel pipe column base plate and grouting material, process parameter data support is provided for the construction quality of the grouting material of an engineering entity, the optimal construction effect is achieved, the concrete slab 1 is 1500 x 60mm in size, the cylinder 4 is made of galvanized steel plates, the cushion block 6 is a concrete cushion block with the diameter of 40mm and the height of 50mm, and the minimum distance between the side surface of the pressing plate 3 and the template 2 is 150 mm.
The upper surface of concrete slab 1 is equipped with a plurality of templates 2, and a plurality of templates 2 connect gradually end to end and constitute the standing groove, and clamp plate 3, cushion 6 are located the standing groove. The template 2 is made of transparent materials, so that the internal test condition can be conveniently observed, the template 3 is made of common glass materials after 6mm, the height of the template 2 in the vertical direction is 500mm, and the length of the template in the horizontal direction is 1200 mm.
Example 2
A test method of a test device for detecting the grouting forming quality of a steel pipe column base comprises the following steps: step (1) manufacturing a test device for detecting the grouting forming quality of the steel pipe column base: the specific operation process is as follows: (1.1) erecting a support frame 7 by using a steel pipe fastener, paving a template on the support frame 7, pouring concrete with a certain thickness on the template, and performing chiseling treatment to form a concrete slab 1, wherein the size of the concrete slab 1 is 1500 x 60mm, so that the support frame 7 is fixed with the concrete slab 1; (1.2) set up cushion 6 at concrete slab 1's upper surface, cushion 6 adopts the diameter to be the high concrete cushion that is 50mm of 40mm to at the top fixed pressing plate 3 of cushion 6, the thickness of clamp plate 3 is 12~15mm, and clamp plate 3 adopts the ground glass material, is convenient for observe the condition on grouting material surface, sets up a plurality of exhaust holes 5 on clamp plate 3, is convenient for discharge the bubble, and the aperture of exhaust hole 5 is 20~25 mm. The barrel 4 is fixed on the upper surface of the pressing plate 3, the barrel 4 is made of galvanized steel sheets, the cushion block 6 is equivalent to a bolt for fixing a steel pipe column base and a concrete slab, the pressing plate 3 is equivalent to a steel pipe column base plate, the barrel 4 is equivalent to a steel pipe column base, and the pressing plate 3 is made of transparent materials, so that the internal test condition can be observed conveniently; (1.3) a plurality of formworks 2 are installed on the concrete slab 1, the formworks 2 are fixed on the upper surface of the concrete slab 1, and the formworks 2 are sequentially connected end to form a placing groove.
Step (2): preparing grouting material: the specific operation process is as follows: the grouting materials are proportioned according to the designed proportion and stirred by stirring equipment to form grouting material for later use.
And (3): and (3) filling the grouting material in the step (2) into the test device in the step (1), namely filling the grouting material between the pressing plate 3 and the concrete slab 1, observing the number of the air holes on the grouting surface and the area of the air holes through the pressing plate 3, and recording the experimental data.
And (4): and (3) optimization test: through the change of test conditions such as adjusting the mixing proportion of the grouting materials, controlling the pouring time and the amount of the poured grouting materials, and the like, and carrying out comparison on a plurality of groups of tests, the optimal construction effect is finally achieved.
The process requirements are as follows:
(1) the steel column foot bottom plate model is made of transparent materials so as to be convenient for observing the quantity of bubbles on the surface of the grouting material;
(2) the support frame below the model can meet the stability requirement, and a plate buckle frame, a wheel buckle frame and the like can be selected;
(3) the grouting material is not only suitable for steel pipe columns, but also suitable for secondary grouting similar working conditions such as strong columns, prefabricated columns and the like;
the construction quality assurance measures of the grouting material are implemented by referring to GB/T50448 and 2015 technical Specification for application of cement-based grouting materials and product specifications.
Engineering application: the novel Zhengdong area located in Zhengzhou city can be pleased with the super-high-rise (240 m) project of the commercial center, the structural system is a steel frame-core cylinder shear wall structure, 16 large-diameter steel pipe columns are arranged in the range of a core cylinder, the large-scale public construction project belongs to, the project quality requirement is high, the project is verified by the test method, the grouting quality of steel pipe column bases is guaranteed to reach a good level, and the project is commented by construction units and administrative units.
The method provides a basis for detecting the contact surface area of the steel pipe column foot bottom plate and the grouting material, provides process parameter data support for the construction quality of the grouting material of the engineering entity, and achieves the optimal construction effect; by using the device, the use amount of engineering entity materials is accurately controlled, and the cost is reduced; the method can be used as a process template, so that quality awareness of project management personnel is improved; the method is widely applied to similar working conditions of high-rise and super high-rise projects, and has a popularization effect.
Claims (9)
1. The utility model provides a test device for detecting steel pipe column base grout shaping quality, includes the support frame, with the top fixed connection's of support frame concrete slab, its characterized in that: the grouting material is positioned between the concrete slab and the pressing plate, and the pressing plate is made of transparent materials.
2. The test device for detecting the grouting forming quality of the steel pipe column base according to claim 1, characterized in that: the thickness of the pressing plate is 12-15 mm, and the pressing plate is made of ground glass.
3. The test device for detecting the grouting forming quality of the steel pipe column base according to claim 1, characterized in that: the pressing plate is provided with a plurality of exhaust holes, and the aperture of each exhaust hole is 20-25 mm.
4. The test device for detecting the grouting forming quality of the steel pipe column base according to claim 1, characterized in that: and a cylinder body for bearing applied pressure is arranged on the upper surface of the pressing plate.
5. The test device for detecting the grouting forming quality of the steel pipe column base according to claim 1, characterized in that: the concrete slab's upper surface is equipped with a plurality of templates, and a plurality of templates connect gradually end to end and constitute the standing groove, and clamp plate, cushion are located the standing groove.
6. The test device for detecting the grouting forming quality of the steel pipe column base according to claim 5, characterized in that: the template is made of transparent materials.
7. A test method of a test apparatus for testing the grouting forming quality of a steel column shoe according to any one of claims 1 to 6, characterized in that: the method comprises the following steps: (1) manufacturing a test device for detecting the grouting forming quality of the steel pipe column base; (2) manufacturing grouting material; (3) filling the grouting material in the step (2) into the test device in the step (1), observing the number and the area of the air holes on the grouting surface through a pressing plate, and recording experimental data; (4) and (3) optimization test: the optimal construction effect is achieved by adjusting the mixing proportion of the grouting materials, controlling the pouring time and the amount of the poured grouting materials.
8. The test method of the test device for detecting the grouting forming quality of the steel pipe column base according to claim 7, characterized in that: the specific operation process of the step (1) is as follows: (1.1) erecting a support frame by using a steel pipe fastener, paving a template on the support frame, pouring concrete with a certain thickness on the template, and performing chiseling treatment to form a concrete slab so as to fix the support frame and the concrete slab; (1.2) arranging a cushion block on the upper surface of a concrete slab, fixing a pressing plate on the top of the cushion block, wherein a plurality of exhaust holes are formed in the pressing plate, so that air bubbles can be exhausted conveniently; (1.3) a plurality of templates are arranged on the concrete slab, the templates are fixed on the upper surface of the concrete slab, and the templates are sequentially connected end to form a placing groove.
9. The test method of the test device for detecting the grouting forming quality of the steel pipe column base according to claim 7, characterized in that: the specific operation process of the step (2) is as follows: and (3) after the grouting raw materials are proportioned according to the designed proportion, stirring by stirring equipment to form grouting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110932175.6A CN113740517B (en) | 2021-08-13 | 2021-08-13 | Test device and test method for detecting grouting forming quality of steel pipe column foot |
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| CN202110932175.6A CN113740517B (en) | 2021-08-13 | 2021-08-13 | Test device and test method for detecting grouting forming quality of steel pipe column foot |
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| CN113740517B CN113740517B (en) | 2024-08-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718311A (en) * | 2022-03-09 | 2022-07-08 | 中冶建工集团有限公司 | Air pump for air exhaust of steel column base plate opening and grouting construction method thereof |
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| CN110850060A (en) * | 2019-11-22 | 2020-02-28 | 北京交通大学 | Visual porous grouting test device and test method thereof |
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2021
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| JP2004108964A (en) * | 2002-09-19 | 2004-04-08 | Abekogyosho Co Ltd | Filling confirmation method and device of grout or its kind |
| KR20100079506A (en) * | 2008-12-31 | 2010-07-08 | 대림산업 주식회사 | Post grouting system of cast-in-place concrete piles and the post grouting method for increasing end bearing capacity at pile base |
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| CN106769441A (en) * | 2016-11-15 | 2017-05-31 | 中国建筑科学研究院 | Method for detecting solid strength and construction quality of grouting material for grouting connection of steel bar sleeve |
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