CN102535754A - High-strength anchor base plate - Google Patents
High-strength anchor base plate Download PDFInfo
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- CN102535754A CN102535754A CN2012100296764A CN201210029676A CN102535754A CN 102535754 A CN102535754 A CN 102535754A CN 2012100296764 A CN2012100296764 A CN 2012100296764A CN 201210029676 A CN201210029676 A CN 201210029676A CN 102535754 A CN102535754 A CN 102535754A
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- backing plate
- base plate
- taper pipe
- anchor
- high strength
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Abstract
The invention provides a high-strength anchor base plate. The high-strength anchor base plate comprises a conical tube and a base plate which are connected with a corrugated pipe, wherein the base plate is provided with an installation fixing hole and a center hole through which a steel strand passes, one end of the conical tube is in the center hole and is integrated with the base plate in a pouring or plastic welding manner, the base plate is also provided with a base plate cover which is fused with molten steel, and the upper end face of the base plate is a flat surface. According to the invention, the conical tube is made of steel or plastic, the base plate is made of cast steel; therefore, the tension strength of the anchor base plate is greatly improved, the wall thickness of the anchor base plate is only about one half of the wall thickness of the conventional anchor base plate with the same tensile strength and the manufacturing cost is reduced; and since the upper end face of the base plate is a flat surface, the pulling force of the base plate can be effectively and longitudinally transferred to a beam body and the end face of the beam body can not crack. The anchor base plate provided by the invention has larger economic benefit, and can improve the competitive power and industry status of enterprises; and more importantly, raw material is saved and the performance of the produce is improved, thereby making contribution to the construction of China.
Description
Technical field
The invention belongs to bridge road and building prestressed material, specifically is a kind of high strength anchor backing plate.
Background technology
In the road and bridge professional construction, generally in design, adopt post stretching prefabricated reinforced concrete prestressed member, implement prestressed stretch-draw.The method of post stretching prefabricated reinforced concrete prestressed member is at first pre-buried bellows; As the prestressing force pulling eye, then at the pre-buried anchor backing plate of prestressed stretch-draw nose end, anchor backing plate is mounted on the template in the outside through bolt with the endoporus of bellows; The centre bore and the template that make the steel strand in the prestressing force pulling eye pass anchor backing plate; Again concrete is injected in the die cavity at prestressing force pulling eye place and with agitator and stirs, treat that concrete strength reaches requirement after, the prestressed stretch-draw operation of following road; Inject cement paste in the mud jacking hole from the anchor backing plate at last, fill the prestressing force pulling eye.It is good more so just to require anchor backing plate to have a strong more pull resistance.As shown in Figure 1; This figure is existing anchor backing plate structural representation; Existing anchor backing plate is that pour into an integrated entity and all be that the cast iron materials that adopts constitutes by Taper Pipe 101 and backing plate 201, and backing plate is roughly open column shape, and backing plate is provided with and installs and fixes hole and the mud jacking hole identical with the backing plate centre bore.The junction Α of Taper Pipe and backing plate is roughly curved, if decide like this in order to increase tensile strength.Secondly in order to guarantee that tensile strength and its thickness are also thicker relatively, generally all at 25mm-45 mm.Sometimes in order to improve tensile strength reinforcing rib must be set above that, so just increase cost more.As shown in Figure 2; This figure is existing anchor backing plate user mode sketch map; The two ends anchor backing plate interconnects with steel strand 501, therefore when receiving external force, will form two power F that draw to the centre, and the concrete 901 between two anchor backing plates forms the outwards power f of extruding also can for backing plate 201 simultaneously.Because the junction of backing plate and Taper Pipe is roughly curved; Therefore make the power f branch of outwards extruding put forth effort on backing plate to each different direction/angle; Simultaneously form reverse cross force in this with tensile force f; Make backing plate bear bigger shearing force, so make the forged iron anchor lower bolster cut the backing plate easy of crack at place.Also can find out simultaneously F power when the power of transmission, F power is to transmit to beam body edge (beam body Edge Distance anchor plate thickness is merely 50mm-100mm), so also easy of crack of beam body edge.Therefore the low backing plate of existing forged iron anchor lower bolster tension dynamics is prone to fragmentation, and is higher with the many manufacturing costs of material simultaneously, is unfavorable for the competition between the enterprise; Next entire product complex forming technology.
Summary of the invention
The objective of the invention is to overcome existing backing plate and be prone to the deficiency broken, that anchor backing plate tensile strength is low, cost of manufacture is high, provide that a kind of tensile strength is high, simple in structure, the backing plate shearing resistance is strong, cost is low and the simple high strength anchor backing plate of preparation method.
The technical scheme that the present invention is adopted to achieve these goals is following:
A kind of high strength anchor backing plate; It comprises Taper Pipe and the backing plate that connects bellows, and said backing plate is provided with the centre bore that installs and fixes the hole and be used for steel strand, it is characterized in that said Taper Pipe one end is through in the centre bore and with backing plate cast or Plastic Welding be one; Also be provided with the backing plate case that can be fused with molten steel on the said backing plate; This backing plate case is connected with the Taper Pipe tube wall simultaneously, is provided with the mud jacking hole between backing plate case and the backing plate, and this mud jacking hole is passed the Taper Pipe tube wall and is communicated with centre bore; The upper surface of said backing plate is the plane, and place, backing plate lower surface is provided with the irony profiled sheeting.
The technical scheme that is more preferably among the present invention is: said Taper Pipe adopts steel sheet, backing plate to adopt cast steel material to constitute and both are cast for one.
Said Taper Pipe adopts plastics to constitute, and backing plate adopts cast steel material to constitute and both Plastic Welding are integral.
Also be provided with reinforcing rib on the said Taper Pipe, and this reinforcing rib is to outer lug or ripple helix.
Angle β between said Taper Pipe wall and Taper Pipe are axial is 1 °-10 °, and the angle between Taper Pipe wall and the backing plate is 91 °-100 °; Said backing plate case is the iron sheet case.
Said profiled sheeting is circular and is connected with the backing plate case with backing plate and is one.
This product method for using is the same with forged iron anchor lower bolster method for using: at first pre-buried bellows; As the prestressing force pulling eye, then at the pre-buried anchor backing plate of prestressed stretch-draw nose end, anchor backing plate is mounted on the template in the outside through bolt with the endoporus of bellows; The centre bore and the template that make the steel strand in the prestressing force pulling eye pass anchor backing plate; Again concrete is injected in the die cavity at prestressing force pulling eye place and with agitator and stirs, treat that concrete strength reaches requirement after, the prestressed stretch-draw operation of following road; Inject cement paste in the mud jacking hole from the anchor backing plate at last, fill the prestressing force pulling eye.
Taper Pipe among the present invention mainly play a part to connect backing plate and bellows with bear the pressure that mixes earth (the bellows thickness of scale is 0.28mm-0.3mm), consider Taper Pipe and the backing plate adhesive when cast with bear intensity of pressure event preferably the thickness of the steel Taper Pipe thickness that is set to 0.5mm-3mm, employing plastics cone material preferably be set to 3mm-6mm and can reach optimum efficiency.Therefore the angle that steel strand form in anchor circle and bellows probably is 1 °-10 °, and preferably the tapering of Taper Pipe is set to 1 °-10 °, make its with bellows between cooperate closer.
The backing plate case has also served as the effect of cast backing plate template in actual production process, so reduced the step of manufacture craft, make production be more prone to, flow process still less, cost is lower.Adopt the iron sheet profiled sheeting to match simultaneously with backing plate case and backing plate; Thereby make the iron sheet profiled sheeting in the manufacturing process of entire product, play the effect of molding sand; Therefore reduced and in manufacturing process, must adopt molding sand to come the processing step of supplement production product, can more fast form complete model.
The present invention is set to the plane through the upper surface of backing plate; Its pulling force is vertically transmitted to the beam body effectively; Can not make beam body end face cracking, secondly also reduce the suffered shearing force of backing plate, it is broken to make backing plate be difficult for; Improve the tensile strength of base plate, and effectively prolonged the application life of backing plate.Secondly backing plate adopts cast steel to process, and Taper Pipe adopts steel or plastics to process, and under identical tensile strength, compares, and the backing plate wall thickness of the application's cast steel anchor backing plate only needs therefore to greatly reduce with material, save material with about the first half, improves performance of products.So the present invention has bigger economic benefit, can improve Enterprises'Competitiveness and position in industry, makes contributions for the construction of country, has vast market prospect.
Description of drawings
Fig. 1 is existing anchor backing plate structural representation.
Fig. 2 is existing anchor backing plate user mode structural representation.
Fig. 3 is a structural representation of the present invention.
Fig. 4 is a user mode structural representation of the present invention.
View when Fig. 5 constructs for the present invention.
Fig. 6 is the profiled sheeting structural representation.
Among the figure: 1-Taper Pipe, 2-backing plate, 3-mud jacking hole, 4-reinforcing rib, angle between α-Taper Pipe wall and the backing plate; Angle between β-Taper Pipe wall and Taper Pipe are axial, 5-steel strand, 6-bellows, 7-shearing place; 8-anchor circle, the 9-concrete, 10-backing plate case, 11-installs and fixes the hole; The 12-centre bore, 13-upper surface, 14-backing plate lower surface, 15-profiled sheeting.
The specific embodiment
To combine accompanying drawing that technical scheme of the present invention is further specified below, but the present invention is not limited in following embodiment.
As shown in Figure 3: a kind of high strength anchor backing plate, it comprises the Taper Pipe 1 and backing plate 2 that connects bellows, said backing plate 2 is provided with and installs and fixes hole 11 and the centre bore 12 that is used for steel strand.Taper Pipe 1 adopts cast steel or plastic material to constitute, and backing plate 2 adopts cast steel material to constitute.Process circular profiled sheeting 15 with iron sheet, then profiled sheeting 15 and modes such as Taper Pipe 1 and backing plate 2 employing welding are linked into an integrated entity.Ring is corresponding with centre bore 12 in the hollow of profiled sheeting 15.Taper Pipe 1 one ends be through in the centre bore 12 and with backing plate 2 cast or Plastic Welding be one; Also be provided with the backing plate case 10 that can be fused with molten steel on the said backing plate 2; This backing plate case 10 is connected with Taper Pipe 1 tube wall simultaneously; Be provided with mud jacking hole 3 between backing plate case 10 and the backing plate 2, and this mud jacking hole 3 passes Taper Pipe 1 tube wall and be communicated with centre bore 12, the upper surface 13 of said backing plate 2 is the plane.For the intensity that increases Taper Pipe also can be provided with the reinforcing rib of ripple helix or to the reinforcing rib 4 of outer lug on Taper Pipe.Wherein the thickness of backing plate 2, Taper Pipe 1, tube wall can be according to confirming according to actual conditions.
As shown in Figure 5, during concrete operations, at first pre-buried bellows 6; As the prestressing force pulling eye, then at the pre-buried anchor backing plate of prestressed stretch-draw nose end and bellows 6 is passed anchor backing plate be connected with anchor circle 8, anchor backing plate 2 adopts bolts to be mounted on the template in the outside through installing and fixing hole 11 with the endoporus of bellows 6; The centre bore and the template that make the steel strand 5 in the prestressing force pulling eye pass anchor backing plate; Again concrete is injected in the die cavity at prestressing force pulling eye place and with agitator and stirs, treat that concrete strength reaches requirement after, the prestressed stretch-draw operation of following road; Inject cement pastes in the mud jacking hole from the anchor backing plate 3 at last, fill the prestressing force pulling eye.Wherein anchor circle and backing plate contact position are shearing place 7, and this shearing place is main stressed place.As shown in Figure 4: when installing the laggard enforcement time spent, because the upper surface 13 of backing plate 2 reaches and the backing plate case of 13 corresponding positions, upper surface is the plane, and vertical with the direction of steel strand; Therefore when receiving external force, extruding force f is unified to a direction and in the opposite direction with tensile force f, vertically acts on the backing plate simultaneously; Therefore reduce the shearing force to backing plate greatly, the tension dynamics that makes backing plate can bear is stronger, and also strengthened application life; Simultaneously whole backing plate adopts cast steel material; Therefore compare former cast iron materials, can reduce its thickness greatly, thereby reduce production costs.Secondly tensile force f power is when transmitting, and its transmission power is vertically to transmit along the beam body, has so just solved beam body crack at edge problem.
Provide the anchor backing plate of a few money regular sizes and the application's anchor backing plate below and carry out performance relatively:
Embodiment 1: with YJM15-5 type anchor backing plate is example; The tapering of steel Taper Pipe 1 is set to 1 °, and wherein the Taper Pipe wall of Taper Pipe 1 and the Taper Pipe angle β between axially is 1 °, and the angle between Taper Pipe wall and the cast steel backing plate 2 is 91 °, and the wall thickness of Taper Pipe 1 is set to 0.5mm, and the thickness of backing plate 2 is set to 10mm.
List this anchor backing plate and existing anchor backing plate data contrast table below:
| ? | The high strength anchor backing plate | Existing forged iron anchor lower bolster |
| Tensile strength | 22247Mpa | 19166Mpa |
| The Taper Pipe wall thickness | 0.5mm | 6mm |
| Plate thickness | 10mm | 28mm |
| Product weight | 1.92Kg | 2.5Kg |
| Manufacturing cost | 14.4 unit's (RMB) | 15.8 unit's (RMB) |
Embodiment 2: with YJM15-10 type anchor backing plate is example; The tapering of cast steel Taper Pipe 1 is set to 3 °, and wherein the Taper Pipe wall of Taper Pipe 1 and the Taper Pipe angle β between axially is 3 °, and the angle between Taper Pipe wall and the cast steel backing plate 2 is 93 °, and the wall thickness of Taper Pipe 1 is set to 1.5mm, and the thickness of backing plate 2 is set to 15mm.
List this anchor backing plate and existing anchor backing plate data contrast table below:
| ? | The high strength anchor backing plate | Existing forged iron anchor lower bolster |
| Tensile strength | 37209Mpa | 27783Mpa |
| The Taper Pipe wall thickness | 1.5mm | 7mm |
| Plate thickness | 15mm | 28mm |
| Product weight | 4.02Kg | 6.5Kg |
| Manufacturing cost | 28.2 unit's (RMB) | 41 yuan (RMB) |
Embodiment 3: with YJM15-15 type anchor backing plate is example; The tapering of cast steel Taper Pipe 1 is set to 5 °; Wherein the Taper Pipe wall of Taper Pipe 1 and the Taper Pipe angle β between axially is 5 °; And the angle between Taper Pipe wall and the cast steel backing plate 2 is 95 °, and the wall thickness of Taper Pipe 1 is set to 3.0mm, and the thickness of backing plate 2 is set to 18mm.List this anchor backing plate and existing anchor backing plate data contrast table below:
| ? | The high strength anchor backing plate | Existing forged iron anchor lower bolster |
| Tensile strength | 53129Mpa | 44865Mpa |
| The Taper Pipe wall thickness | 3mm | 7mm |
| Plate thickness | 18mm | 38mm |
| Product weight | 8.02Kg | 15.7Kg |
| Manufacturing cost | 56.2 unit's (RMB) | 98.9 unit's (RMB) |
Embodiment 4: with YJM15-5 type anchor backing plate is example; Taper Pipe 1 tapering that plastics constitute is set to 2 °, and wherein the Taper Pipe wall of Taper Pipe 1 and the Taper Pipe angle β between axial is 2 °, and the angle between Taper Pipe wall and the backing plate 2 is 92 °, and the wall thickness of Taper Pipe 1 is set to 3mm, and the thickness of backing plate 2 is set to 10mm.List this anchor backing plate and existing anchor backing plate data contrast table below being somebody's turn to do:
| ? | The high strength anchor backing plate | Existing forged iron anchor lower bolster |
| Tensile strength | 22247Mpa | 19166Mpa |
| The Taper Pipe wall thickness | 3mm | 6mm |
| Plate thickness | 10mm | 28mm |
| Product weight | 1.75Kg | 2.5Kg |
| Manufacturing cost | (13.7 RMB) | 15.8 unit's (RMB) |
| ? | The high strength anchor backing plate | Existing forged iron anchor lower bolster |
| Tensile strength | 22247Mpa | 19166Mpa |
| The Taper Pipe wall thickness | 4.5mm | 6mm |
| Plate thickness | 25mm | 28mm |
| Product weight | 1.98kg | 2.5Kg |
| Manufacturing cost | 14.7 unit's (RMB) | 15.8 unit's (RMB) |
| ? | Under the high strength anchor | Under the existing forged iron anchor |
| Tensile strength | 22247Mpa | 19166Mpa |
| The Taper Pipe wall thickness | 6mm | 6mm |
| Plate thickness | 30mm | 28mm |
| Product weight | 2.23kg | 2.5Kg |
| Manufacturing cost | 15.2 unit's (RMB) | 15.8 unit's (RMB) |
Therefore from above-mentioned each embodiment, can find out in the properties of product contrast table; The application's high strength anchor backing plate is compared with existing forged iron anchor lower bolster; Its tensile strength is apparently higher than existing forged iron anchor lower bolster, and its manufacturing cost is significantly less than existing forged iron anchor lower bolster simultaneously, therefore for saving production cost; Improving enterprise competitiveness has very big effect, has remarkable economic efficiency.
Claims (8)
1. high strength anchor backing plate; It comprises Taper Pipe (1) and the backing plate (2) that connects bellows; Said backing plate (2) is provided with the centre bore (12) that installs and fixes hole (11) and be used for steel strand; It is characterized in that said Taper Pipe (1) one end is through in the centre bore (12) and with backing plate (2) cast or Plastic Welding be one, also be provided with the backing plate case (10) that can be fused with molten steel on the said backing plate (2), this backing plate case (10) is connected with Taper Pipe (1) tube wall simultaneously; Be provided with mud jacking hole (3) between backing plate case (10) and the backing plate (2); And this mud jacking hole (3) is passed Taper Pipe (1) tube wall and is communicated with centre bore (12), and the upper surface (13) of said backing plate (2) is the plane, and irony profiled sheeting (15) is located to be provided with in backing plate lower surface (14).
2. a kind of high strength anchor backing plate according to claim 1 is characterized in that said Taper Pipe (1) and backing plate (2) all adopt cast steel material to constitute and both are cast for one.
3. a kind of high strength anchor backing plate according to claim 1 is characterized in that said Taper Pipe (1) adopts the extruded in plastic moulding, and backing plate (2) adopts the cast steel material moulding by casting, and Taper Pipe (1) and backing plate (2) Plastic Welding are integral.
4. a kind of high strength anchor backing plate according to claim 1 is characterized in that also being provided with on the said Taper Pipe (1) reinforcing rib (4).
5. a kind of high strength anchor backing plate according to claim 4 is characterized in that said reinforcing rib (4) is the ripple helix.
6. a kind of high strength anchor backing plate according to claim 1 is characterized in that said profiled sheeting (15) is for circular and be connected with backing plate case (10) with backing plate (2) and be one.
7. according to the described a kind of high strength anchor backing plate of claim 1, it is characterized in that the angle (β) between said Taper Pipe wall and Taper Pipe are axially is 1 °-10 °, the angle (α) between Taper Pipe wall and the backing plate (2) is 91 °-100 °.
8. according to the described a kind of high strength anchor backing plate of claim 1, it is characterized in that said backing plate case (10) is the iron sheet case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210029676.4A CN102535754B (en) | 2012-02-10 | 2012-02-10 | A kind of high-strength anchor base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210029676.4A CN102535754B (en) | 2012-02-10 | 2012-02-10 | A kind of high-strength anchor base plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102535754A true CN102535754A (en) | 2012-07-04 |
| CN102535754B CN102535754B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210029676.4A Expired - Fee Related CN102535754B (en) | 2012-02-10 | 2012-02-10 | A kind of high-strength anchor base plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335884A (en) * | 2013-07-09 | 2013-10-02 | 郑卫华 | Backing plate used for anchor rod pull-out test |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2692243Y (en) * | 2004-03-01 | 2005-04-13 | 柳州欧维姆机械股份有限公司 | Flat deadman anchor backing board |
| EP1707684A1 (en) * | 2005-03-10 | 2006-10-04 | Dywidag-Systems International GmbH | Method and apparatus for tensioning of a multiple step anchor |
| CN201078051Y (en) * | 2007-08-31 | 2008-06-25 | 柳州市威尔姆预应力有限公司 | Round end-face anchor backing board |
| CN101974960A (en) * | 2010-11-03 | 2011-02-16 | 杭州神列锻压件有限公司 | Pre-stressed anchor backing plate |
-
2012
- 2012-02-10 CN CN201210029676.4A patent/CN102535754B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2692243Y (en) * | 2004-03-01 | 2005-04-13 | 柳州欧维姆机械股份有限公司 | Flat deadman anchor backing board |
| EP1707684A1 (en) * | 2005-03-10 | 2006-10-04 | Dywidag-Systems International GmbH | Method and apparatus for tensioning of a multiple step anchor |
| CN201078051Y (en) * | 2007-08-31 | 2008-06-25 | 柳州市威尔姆预应力有限公司 | Round end-face anchor backing board |
| CN101974960A (en) * | 2010-11-03 | 2011-02-16 | 杭州神列锻压件有限公司 | Pre-stressed anchor backing plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335884A (en) * | 2013-07-09 | 2013-10-02 | 郑卫华 | Backing plate used for anchor rod pull-out test |
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| CN102535754B (en) | 2015-11-18 |
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Granted publication date: 20151118 Termination date: 20160210 |