CN104963461A - Connection method of steel bars between prefabricated parts by adopting steel fiber mortar grouting sleeve - Google Patents
Connection method of steel bars between prefabricated parts by adopting steel fiber mortar grouting sleeve Download PDFInfo
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- CN104963461A CN104963461A CN201510423897.3A CN201510423897A CN104963461A CN 104963461 A CN104963461 A CN 104963461A CN 201510423897 A CN201510423897 A CN 201510423897A CN 104963461 A CN104963461 A CN 104963461A
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Abstract
The invention provides a connection method of steel bars between prefabricated parts by adopting a steel fiber mortar grouting sleeve and discloses a method for connecting the steel bars between the prefabricated parts by adopting the steel fiber mortar grouting sleeve. A used steel pipe sleeve is a common steel pipe (1); the steel bars (4) needing to be connected are inserted into the steel pipe sleeve from the two ends; and cement-based grouting materials (5) doped with steel fibers are poured into a sleeve cavity to form a steel bar butt-joint mortar anchor connection joint. According to the method, the used common steel pipe does not need to be excessively machined and only a grouting hole and a mortar discharging hole (3) need to be opened. After the steel fibers are added into traditional cement mortar, the strength can be remarkably improved; and even if the sleeve is changed into the common steel pipe, all performance requirements still can be met. By the aid of high-performance grouting mortar and the common steel pipe sleeve, the use cost can be greatly reduced; a sleeve machining process is simplified under the condition that the grouting mortar performance is guaranteed, the cost is saved and the construction difficulty is also reduced; and the method can be directly applied to actual construction.
Description
Technical field
The present invention relates to bar connecting mode between a kind of prefabricated units adopting steel fibre mortar grout sleeve, belong to concrete structure engineering technical field.
Background technology
For meeting the requirement of the anti-seismic performance of prefabricated concrete structure, when the splicing of precast unit scene is installed, the connected mode of main steel bar stress and connection reliability just become the key that this structure success is applied.Steel bar stress method of attachment conventional at present comprises two reinforcing bars of needs connection in insertion Cast-steel Sleeve, and in sleeve, pour into the full grouting connected mode of the non-shrinkage cement-based grouting material of high strength: or use forging or impact style make sleeve or form by round steel and polygonal shaped steel machining, by two reinforcing bars needing to connect to inserting in Cast-steel Sleeve, and in sleeve, pour into the full grouting connected mode of the non-shrinkage cement-based grouting material of high strength; Or bottle shape Cast-steel Sleeve made by the sleeve of slurry anchor reinforcing bar, one end is connected reinforcing bar and directly inserts in sleeve, the other end is at the internal thread of bottleneck position turnery processing connecting reinforcement, the pass of Cast-steel Sleeve is screwed in after the end reinforced straight spiral grains of company, Cast-steel Sleeve internal pore fills the non-shrinkage cement-based grouting material of high strength, two reinforcing bars one formed by connecting connect for starching anchor, and another root is half grouting Cast-steel Sleeve method of attachment of straight screw connection; Or the tubular steel bushing at the band end is directly become by round steel machining, utilize the internal thread through hole processing connecting reinforcement at the bottom of certain thickness cylinder, two reinforcing bars be connected, one is directly inserted in steel bushing, fill with high strength non-shrinkage cement-based grouting slip anchor by pressure to connect, another root is processed into straight thread by one end, it is directly screwed in screwed hole at the bottom of the cylinder of steel bushing, forms slurry anchor bar connecting and is connected the steel bushing method of attachment of being partly in the milk of combining with straight thread reinforced bar.In the method for above-mentioned introduction, full grout sleeve needs through complicated processing, or carries out prefabricated, improves cost and the difficulty of construction.In addition, owing to needing to use accurate casting technique, easily produce casting flaw, affect practical effect.
Summary of the invention
The present invention is bar connecting mode between a kind of prefabricated units being applied to the employing steel fibre mortar grout sleeve in concrete structure field.
In order to overcome the deficiency existed in the grout sleeve technology of existing reinforcing bar slurry anchor docking connection, this
The bright mode that steel bar stress slurry anchor docking connection between a kind of prefabrication and assembly construction concrete structure prefabricated units is provided, use common steel tube as sleeve, avoid tubular be entirely in the milk that Cast-steel Sleeve material requirements is high, hot investment casting requirement is high and casting flaw on the impact of its stress performance.Grouting material is in common cement-base grouting material, add the high strength grout that steel fibre makes, grouting material performance can be increased substantially like this, even if make to use common steel tube as sleeve in bar connecting, also meet the steel concrete supporting performance requirement of national project regulation and stipulation.Simplify the processing technology of grout sleeve of knowing clearly in addition, reduce cost, the engineering practice that job site precast unit steel bar stress slurry anchor docking connects can be directly applied to.
Be the reinforcing bar of 12mm to 40mm for connection diameter, for the reinforcing bar of connection diameter 16mm.Grout sleeve length used is 290mm, wall thickness 5mm, external diameter 38mm, and internal diameter is 28mm.Grouting mouth and grout outlet is offered apart from two-port 15mm to 25mm place.
What seamless steel pipe both sides port arranged that median pore radius equals to be connected bar diameter can insert the ring-shaped rubber plug being connected reinforcing bar.
The alignment pin controlled by connecting reinforcing bar insertion depth is set at the middle part of seamless steel pipe.
Connected mode of the present invention has the following advantages: (1) sleeve is easy to process, is not easy to affect sleeve performance because of the procedure of complexity.(2) sleeve uses common steel tube, with low cost, reduces construction cost.(3) grouting material used, owing to adding steel fibre, while ensureing that mobility meets code requirement, has the resistance to compression more more outstanding than conventional grout material, tension, the performances such as shearing resistance.(4) during grouting, program is simple, constructability human users.
Specific implementation method
Between the prefabricated units of the employing steel fibre mortar grout sleeve that the present invention proposes, bar connecting mode method of operating is (Fig. 1): when carrying out element precast, need reinforcing bar (4) one end connected to insert in steel pipe sleeve by one, reinforcing bar head reaches alignment pin (6) position in the middle part of sleeve, and the other end of steel pipe sleeve and precast-concrete form are fixed.By plastics grout pipe with grouting mouth and plasma discharge mouth (3) be connected and fixed, build prefabricated structure concrete and maintenance to prescribed strength.After precast unit is transported to job site, carry out hoisting prefabricated component, and needed by another root the reinforcing bar carrying out connecting to insert among steel pipe sleeve, prefabricated units splicing is put in place, and the splicing seams of plug members periphery.The grouting mouth pressure that be positioned at low level of the non-shrinkage cement-based grouting material of high strength (5) of the admixture steel fibre stirred from grouting deformed steel pipe box cylinder is poured into, grouting material is discharged from the plasma discharge mouth (5) being positioned at high level, shutoff plasma discharge mouth, treat that grouting material maintenance is to prescribed strength, form the joint that slurry anchor steel reinforcement abutting joints connects.
Bore the dowel hole for controlling to insert reinforcing bar length in the axial middle part of steel pipe sleeve, and alignment pin rivet is installed.
At grouting mouth and plasma discharge mouth that distance steel pipe two-port 15mm to 25mm drill diameter is 20mm-25mm, and the fastener installed for fixing grouting plastic pipe is for pouring into high strength cement base grouting material.
When the vertical applied force reinforcing bar that prefabrication and assembly construction concrete column or body of wall build uses grout sleeve to connect, construction method is (Fig. 2): by prefabricated for component layering, by steel pipe socket jacket casing on the steel bar stress (1) of member bottom section, reinforcing bar is made to reach prescribed depth, the other end of steel pipe sleeve and precast-concrete form are fixed, build prefabricated structure concrete and maintenance to prescribed strength.At the scene install prefabricated units time, the steel pipe grout sleeve bottom prefabricated units is aimed at another root steel bar stress (1), and by crane by jacket casing on reinforcing bar.The splicing seams of plug members periphery.Grouting mouth (2) pressure that is positioned at low level of the non-shrinkage cement-based grouting material of high strength (5) of the admixture steel fibre stirred from grouting deformed steel pipe box cylinder is poured into, grouting material is discharged from the plasma discharge mouth (2) being positioned at high level, shutoff plasma discharge mouth, treat that grouting material maintenance is to prescribed strength, form the joint that slurry anchor steel reinforcement abutting joints connects.
At prefabrication and assembly construction concrete beam, wall, construction method when the horizontal force reinforcing bar grout sleeve of post component connects is (Fig. 3): be connected future insufficiency position with wall or wall with the horizontal reinforcement of post with beam, wall at precast beam, grout sleeve (1), be enclosed within the steel bar stress (4) of left-side member, the sleeve other end is enclosed within the steel bar stress on right side, makes the junction of two reinforcing bars be positioned at the middle part of sleeve, adds rubber stopper (2) at socket port.Check after sealing effectiveness, to install with plasma discharge mouth (3) at grouting mouth and be connected with plastic pipe (6).At component future insufficiency position concreting, after maintenance to desired strength, grouting mouth (3) pressure of the non-shrinkage cement-based grouting material of high strength of the admixture steel fibre stirred from grouting deformed steel pipe box cylinder is poured into, grouting material is discharged from the plasma discharge mouth of sleeve, shutoff plasma discharge mouth, treat that grouting material maintenance is to prescribed strength, form the joint that slurry anchor steel reinforcement abutting joints connects.
Except the construction method introduced above, constructor protects because actual conditions are also subject to the present invention to the improvement that the present invention makes.
Accompanying drawing explanation
Fig. 1 be grout sleeve prefabricated units between bar connecting mode schematic diagram.
Fig. 2 is that precast unit vertical reinforcement adopts steel pipe docking sleeve connection diagram.
Fig. 3 is that precast unit horizontal reinforcement adopts steel pipe docking sleeve connection diagram.
Claims (3)
1. one kind adopts bar connecting mode between the prefabricated units of steel fibre mortar grout sleeve to be full grout sleeve, sleeve is common steel tube sleeve, without the need to prefabricated, steel pipe is offered grouting mouth and grout outlet, the reinforcing bar needing to connect is inserted from two ends, and pour into the non-shrinkage cement-based high strength grout that adds steel fibre in the cavities to form reinforcing bar slurry anchor jointing, use grouting material to be in conventional cement mortar, add the high-performance cement-based grouting material that steel fibre makes.
2. according to the sleeve of common steel tube described in claim 1, be the reinforcing bar of 12mm to 40mm for connection diameter, for the reinforcing bar of connection diameter 16mm, grout sleeve length used is 290mm, wall thickness 5mm, external diameter 38mm, internal diameter is 28mm, offers grouting mouth and grout outlet apart from two-port 15mm to 25mm place.
3. according to grouting material high-performance cement-based described in claim 1, steel fibre is added in conventional cement mortar, there is following features: compare common grouting material and there is higher compactness, lower water-cement ratio, comprehensively improve tension, bending resistance, with breaking resistance, obtains the very high strength of materials and toughness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510423897.3A CN104963461A (en) | 2015-07-20 | 2015-07-20 | Connection method of steel bars between prefabricated parts by adopting steel fiber mortar grouting sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510423897.3A CN104963461A (en) | 2015-07-20 | 2015-07-20 | Connection method of steel bars between prefabricated parts by adopting steel fiber mortar grouting sleeve |
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| CN104963461A true CN104963461A (en) | 2015-10-07 |
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| CN201510423897.3A Pending CN104963461A (en) | 2015-07-20 | 2015-07-20 | Connection method of steel bars between prefabricated parts by adopting steel fiber mortar grouting sleeve |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958203A (en) * | 2017-05-10 | 2017-07-18 | 上海市城市建设设计研究总院（集团）有限公司 | The packaged type bridges grouting connecting-type sleeve of large scale high intensity half |
| CN106958204A (en) * | 2017-05-10 | 2017-07-18 | 上海市城市建设设计研究总院（集团）有限公司 | Packaged type bridges are integrally in the milk connecting-type sleeve with large scale high intensity |
| CN106988487A (en) * | 2016-01-20 | 2017-07-28 | 上海标仕建筑工程材料有限公司 | Half grouting formula steel bar connector |
| CN107489225A (en) * | 2017-09-22 | 2017-12-19 | 辽宁工业大学 | A kind of fiber bar seawater marine sand concrete beam and its construction method |
| CN108360753A (en) * | 2018-02-01 | 2018-08-03 | 中国十七冶集团有限公司 | A kind of node connecting structure of fabricated shear wall |
| CN108678145A (en) * | 2018-07-21 | 2018-10-19 | 李藏柱 | Sleeve, prefabricated components connector, prefabricated components and prefabricated components assembly |
| CN109057170A (en) * | 2018-09-26 | 2018-12-21 | 湖南大学 | A kind of fibre reinforced composites linked system and implementation method based on cement base cementing medium |
| CN109695461A (en) * | 2018-12-27 | 2019-04-30 | 江苏建筑职业技术学院 | A kind of high-strength connection structure for steel pipe concrete bracket |
| CN112814283A (en) * | 2020-12-24 | 2021-05-18 | 中交第三航务工程局有限公司江苏分公司 | Glue pouring connection structure for steel bar sleeve and construction method |
-
2015
- 2015-07-20 CN CN201510423897.3A patent/CN104963461A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988487A (en) * | 2016-01-20 | 2017-07-28 | 上海标仕建筑工程材料有限公司 | Half grouting formula steel bar connector |
| CN106958203A (en) * | 2017-05-10 | 2017-07-18 | 上海市城市建设设计研究总院（集团）有限公司 | The packaged type bridges grouting connecting-type sleeve of large scale high intensity half |
| CN106958204A (en) * | 2017-05-10 | 2017-07-18 | 上海市城市建设设计研究总院（集团）有限公司 | Packaged type bridges are integrally in the milk connecting-type sleeve with large scale high intensity |
| CN107489225A (en) * | 2017-09-22 | 2017-12-19 | 辽宁工业大学 | A kind of fiber bar seawater marine sand concrete beam and its construction method |
| CN108360753A (en) * | 2018-02-01 | 2018-08-03 | 中国十七冶集团有限公司 | A kind of node connecting structure of fabricated shear wall |
| CN108678145A (en) * | 2018-07-21 | 2018-10-19 | 李藏柱 | Sleeve, prefabricated components connector, prefabricated components and prefabricated components assembly |
| CN109057170A (en) * | 2018-09-26 | 2018-12-21 | 湖南大学 | A kind of fibre reinforced composites linked system and implementation method based on cement base cementing medium |
| CN109695461A (en) * | 2018-12-27 | 2019-04-30 | 江苏建筑职业技术学院 | A kind of high-strength connection structure for steel pipe concrete bracket |
| CN112814283A (en) * | 2020-12-24 | 2021-05-18 | 中交第三航务工程局有限公司江苏分公司 | Glue pouring connection structure for steel bar sleeve and construction method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151007 |
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| WD01 | Invention patent application deemed withdrawn after publication |