CN210104564U - High-strength steel strand pre-stressed anchoring structure - Google Patents
High-strength steel strand pre-stressed anchoring structure Download PDFInfo
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- CN210104564U CN210104564U CN201920616942.0U CN201920616942U CN210104564U CN 210104564 U CN210104564 U CN 210104564U CN 201920616942 U CN201920616942 U CN 201920616942U CN 210104564 U CN210104564 U CN 210104564U
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Abstract
The utility model provides a pair of high-strength steel strand wires prestressed anchorage structure, include: the high-strength steel strand, the high-strength anchor plate and the high-strength anchor backing plate are arranged in sequence, wherein the high-strength anchor backing plate comprises a conical barrel, a bearing plate arranged along the circumferential direction of the barrel is arranged at one end with a larger outer diameter of the barrel, and a first reinforcing ring rib is arranged at one end with a smaller outer diameter of the barrel along the circumferential direction of the barrel; one side of the bearing plate is provided with a high-strength anchor plate, a plurality of high-strength steel stranded wires with the strength of 2400MPa are arranged in the high-strength anchor plate, one end of each high-strength steel stranded wire is fixed on the high-strength anchor plate, and the other end of each high-strength steel stranded wire penetrates through the barrel body and extends outwards; a plurality of axial reinforcing ribs are arranged between the bearing plate and the first reinforcing ring rib; the axial reinforcing ribs are inwards sunken to form arc-shaped or multi-side grooves; one side of one of the axial reinforcing ribs is provided with a grouting pipe, a diversion trench is arranged in the grouting pipe, and the diversion trench penetrates through the grouting pipe and is connected with a cavity in the cylinder body. The structure strength of the utility model reaches 2400MPa system standard; the overall structural strength is higher.
Description
Technical Field
The utility model relates to a high-strength steel strand wires prestressed anchorage system field, concretely relates to high-strength steel strand wires prestressed anchorage structure.
Background
At present, with the continuous promotion of bridge construction at home and abroad, the requirement on the bridge per se is higher and higher. On the premise of meeting the traffic requirement to the maximum extent, the use amount of engineering materials such as concrete, steel and the like is required to be reduced so as to achieve the purposes of reducing the construction cost, reducing the energy consumption and the like.
Meanwhile, for example, in China, with the continuous progress of infrastructure, roads are more and more dense, and lines with different traffic demands are overlapped in a crossed manner, such as crossing high-speed railway lines, overhead lines in cities and the like. When the routes are overlapped, strict requirements are provided for the bridge span, and the span of a part of viaduct bridges must be designed to be larger due to the limitation of construction conditions so as to meet the passing requirements of vehicles and ships under the bridges.
In the existing bridge, a prestressed system mainly aiming at reducing the section size of a member and increasing the span of the bridge cannot meet the engineering requirements slowly. The steel strand is used as the most common prestressed tendon in a prestressed system, is widely applied at home and abroad, and has the common specification of 1860MPa grade 1x7-15.20 mm. Under the condition that the cross section size of the existing component is fixed, the structural strength is low, and particularly the structural strength cannot reach 2400MPa so as to meet larger bridge span.
For example, patent document No. CN201721193828.9 discloses a prestressed steel strand tension anchoring structure; the device comprises a limiting plate, wherein a frame structure supporting plate is arranged on the limiting plate, an anchoring mechanism is arranged in the frame structure supporting plate, the anchoring mechanism comprises an outer sliding sleeve body and an inner clamping box, and the outer sliding sleeve body and the inner clamping box are connected in a sliding mode and locked; the inside callipers incasement is equipped with stopper, stretch-draw pole, and the corresponding position of the stopper and the outer sliding sleeve body of lower extreme all is equipped with a plurality of mounting grooves, and the syntropy is equipped with a plurality of retaining members in the mounting groove from top to bottom, the retaining member includes the sleeve, is equipped with the taper hole in the sleeve, and the internal periphery of taper hole is equipped with a plurality of toper clamping pieces, and a plurality of toper clamping pieces fold and form the through-hole in conical axis department, every toper clamping piece upper end and spring coupling, and the spring is connected with detachable spring. The structural strength of the bridge is low, and can only reach 1860MPa, but cannot reach 2400MPa so as to meet the requirement of larger bridge span.
Disclosure of Invention
Technical problem to be solved
The utility model aims at providing a high-strength steel strand prestressed anchorage structure, which adopts the high-strength steel strand, the external diameter size of the high-strength steel strand is the same as the common specification of the current engineering, and the strength of the high-strength steel strand is improved to 2400MPa from the common 1860 MPa; the high-strength anchor backing plate adopts a structure which is provided with an axial reinforcing rib, a radial reinforcing rib and a grouting pipe, so that the structural strength of the high-strength anchor backing plate is greatly enhanced, and meanwhile, the structural strength of the high-strength anchor backing plate reaches 2400MPa under the condition that the section size of a component is controlled to be the same as that of the existing system, even the structural strength of the high-strength anchor backing plate reaches 2400MPa under the condition of reduction; the defects that a prestressed system mainly aiming at reducing the section size of a component and increasing the span of a bridge cannot reach 2400MPa to meet the requirement of larger span of the bridge are overcome.
(II) technical scheme
In order to solve the technical problem, the utility model provides a pair of high-strength steel strand wires prestressed anchorage structure, include: the high-strength anchor comprises a high-strength steel strand, a high-strength anchor plate and a high-strength anchor backing plate, wherein the high-strength anchor backing plate comprises a conical barrel, a bearing plate arranged along the circumferential direction of the barrel is arranged at the end with the larger outer diameter of the barrel, and a first reinforcing ring rib is arranged at the end with the smaller outer diameter of the barrel along the circumferential direction of the barrel; a high-strength anchor plate is arranged on one side of the bearing plate, a plurality of high-strength steel stranded wires with the strength of 2400MPa are arranged in the high-strength anchor plate, one end of each high-strength steel stranded wire is fixed on the high-strength anchor plate, and the other end of each high-strength steel stranded wire penetrates through the barrel and extends outwards; a plurality of axial reinforcing ribs are arranged between the bearing plate and the first reinforcing ring rib; the axial reinforcing ribs are recessed inwardly to form curved or multi-sided grooves. The utility model adopts the high-strength steel strand, the external diameter size of the high-strength steel strand is the same as the common specification of the current engineering, and the strength of the high-strength steel strand is improved from the common 1860MPa to 2400 MPa; the high-strength anchor backing plate adopts a structure which is provided with an axial reinforcing rib, a radial reinforcing rib and a grouting pipe, so that the structural strength of the high-strength anchor backing plate is greatly enhanced, and meanwhile, the structural strength of the high-strength anchor backing plate reaches 2400MPa under the condition that the section size of a component is controlled to be the same as that of the existing system, even the structural strength of the high-strength anchor backing plate reaches 2400MPa under the condition of reduction; under the condition that the overall weight is basically unchanged, the overall structural strength is higher. And simultaneously, the utility model discloses 2400MPa level high-strength steel strand wires prestressed anchorage system construction methods is the same with current anchor system.
Preferably, a reinforcing column base is further arranged at the joint of the axial reinforcing rib and the bearing plate, and the section width of the reinforcing column base is larger than that of the axial reinforcing rib. The utility model discloses further the cross-sectional width through setting up the enhancement column base is greater than the cross-sectional width of axial stiffening rib, has strengthened the structural strength between bearing plate and the axial stiffening rib. The reinforcing column base increases the overall strength while avoiding local damage to the anchor backing plate.
Preferably, the joint of the pressure bearing plate and the cylinder body is also provided with an annular flange, and the reinforcing column base is fixed on the annular flange; the reinforcing column base is a triangular prism. The connecting part of the bearing plate connecting cylinder body of the utility model is also provided with an annular flange; the structure strength of the bearing plate with the largest stress is further enhanced.
Preferably, the number of said axial reinforcing ribs is six. The number of the axial reinforcing ribs is six, and the six axial reinforcing ribs are used as the number requirement of the lowest axial reinforcing ribs; and the strength of fewer reinforcing ribs cannot meet the requirement of the 2400 MPa-level high-strength steel strand prestressed anchoring system, and the overall weight is increased by more reinforcing ribs.
Preferably, one side of one of the axial reinforcing ribs is provided with a grouting pipe, a diversion trench is arranged in the grouting pipe, and the diversion trench penetrates through the grouting pipe and is connected with a cavity in the cylinder body; one end of the grouting pipe is fixed on the outer side of the bearing plate, and the other end of the grouting pipe is fixedly connected with the cylinder. The utility model discloses such structure of slip casting pipe, it is minimum to holistic size influence.
Preferably, one end of the cylinder body, which is far away from the bearing plate, is provided with a second reinforcing ring rib which is arranged along the circumferential direction of the cylinder body. The utility model discloses the one end of keeping away from the bearing plate is equipped with the second beaded finish rib of arranging along barrel circumference, has further strengthened the structural strength of high-strength anchor backing plate front end tip.
Preferably, the high-strength anchor plate is provided with a conical fixing groove; the high-strength steel strand is provided with a conical clamping piece, and the clamping piece is inserted into the fixing groove; the angle difference between the outer side taper edge of the anchor plate and the outer side edge of the clamping piece is 5 to 35 minutes. The utility model discloses set up conical fixed slot, be convenient for fix high strength steel strand wires. The utility model discloses the angular difference that sets up the outside awl limit of anchor slab and the outside limit of clamping piece each other is 5-35 minutes, the utility model discloses a change the angular difference that anchor slab and clamping piece are each other, improved anchor efficiency coefficient.
Preferably, the grouting pipe comprises a bottom side part and an outer side part which are fixed on the outer side of the pressure bearing plate, one end of the outer side part is connected with the bottom side part, and the other end of the outer side part is connected with the cylinder; the diversion trench penetrates through the bottom side part and the outer side part. The utility model adopts the grouting pipe which comprises a bottom side part and an outer side part which are fixed outside the bearing plate, wherein one end of the outer side part is connected with the bottom side part, and the other end is connected with the cylinder body; the diversion trench penetrates through the bottom side part and the outer side part, so that the structural strength of the pressure bearing plate cannot be influenced by the diversion trench of the grouting pipe.
Preferably, the inner layer edge of the bearing plate is inwards sunken to form an anchor plate mounting groove, so that the high-strength anchor plate can be conveniently installed. The utility model discloses set up the anchor slab mounting groove, its anchor slab that excels in of being convenient for, its simple structure, structural strength is higher.
Preferably, the high-strength steel strand pre-stressed anchoring structure further comprises a high-strength spiral rib, the high-strength spiral rib is sleeved outside the cylinder, and the bottom end of the high-strength spiral rib abuts against the grouting pipe. The utility model discloses a high-strength spiral muscle makes it satisfy the requirement of 2400MPa level high-strength steel strand wires prestressed anchorage solid system.
(III) advantageous effects
The utility model provides a pair of high-strength steel strand wires prestressed anchorage structure, it has following advantage:
1. the utility model adopts the high-strength steel strand, the external diameter size of the high-strength steel strand is the same as the common specification of the current engineering, and the strength of the high-strength steel strand is improved from the common 1860MPa to 2400 MPa; the high-strength anchor backing plate adopts a structure which is provided with an axial reinforcing rib, a radial reinforcing rib and a grouting pipe, so that the structural strength of the high-strength anchor backing plate is greatly enhanced, and meanwhile, the structural strength of the high-strength anchor backing plate reaches 2400MPa under the condition that the section size of a component is controlled to be the same as that of the existing system, even the structural strength of the high-strength anchor backing plate reaches 2400MPa under the condition of reduction; it has higher strength under the condition that the whole weight is basically unchanged. And simultaneously, the utility model discloses 2400MPa level high-strength steel strand wires prestressed anchorage system construction methods is the same with current anchor system.
Drawings
Fig. 1 is a perspective view of an embodiment 1 of a high-strength steel strand pre-stressed anchoring structure of the present invention;
fig. 2 is a cross-sectional view of an embodiment 1 of the high-strength steel strand pre-stressed anchoring structure of the present invention;
fig. 3 is a partially enlarged view of a portion a of fig. 2 of an embodiment 1 of the high-strength steel strand pre-stressed anchoring structure according to the present invention;
fig. 4 is a partial enlarged view of a portion C of fig. 1 of an embodiment 1 of the high-strength steel strand pre-stressed anchoring structure according to the present invention;
fig. 5 is a side view of an embodiment 1 of the high-strength steel strand pre-stressed anchoring structure of the present invention;
fig. 6 is a B-B sectional view of fig. 5 of embodiment 1 of the high-strength steel strand pre-stressed anchoring structure of the present invention.
1. The high-strength anchor plate comprises a cylinder body, 2, a bearing plate, 3, a first reinforcing ring rib, 4, a second reinforcing ring rib, 5, an anchor plate mounting groove, 6, an axial reinforcing rib, 7, a groove, 8, a grouting pipe, 9, a bottom side, 10, an outer side, 11, a reinforcing column foot, 12, an annular flange, 13, a fixing flange, 14, a flow guide groove, 15, a fixing groove, 16, a clamping piece, 100, a high-strength steel strand, 200, a high-strength anchor plate, 300, a high-strength spiral rib, 400 and a high-strength anchor backing plate.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically coupled, directly coupled, or indirectly coupled through an intermediary. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a structural strength of this trade middle finger that excels in the high-strength anchor backing plate surpasss 1860 MPa's system standard's spare part.
Example 1
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the utility model provides a high-strength steel strand prestressed anchorage structure, include: high-strength steel strand wires 100, high-strength anchor plate 200, high-strength spiral muscle 300 and high-strength anchor backing plate 400, the high-strength anchor backing plate includes conical barrel 1, the great one end of barrel external diameter has the bearing plate 2 of arranging along barrel circumference, the less one end of barrel external diameter has arranged first reinforcing ring rib 3 along barrel circumference. And a second reinforcing ring rib 4 arranged along the circumferential direction of the cylinder body is arranged at one end of the cylinder body, which is far away from the pressure bearing plate. The inner layer edge of the pressure bearing plate is inwards sunken to form an anchor plate mounting groove 5, so that the high-strength anchor plate can be conveniently installed. The high-strength anchor plate is provided with a conical fixing groove 15; the high-strength steel strand is provided with a conical clamping piece 16, and the clamping piece is inserted into the fixing groove; the angle difference between the outer side taper edge of the anchor plate and the outer side edge of the clamping piece is 5-35 minutes, the utility model discloses a change the angle difference between each other of anchor plate and clamping piece, improved anchor efficiency coefficient. The angle difference between the outer side taper edge of the anchor plate and the outer side edge of the clamping piece is the difference angle between the included angle b between the outer side taper edge of the anchor plate and the central line of the cylinder body and the included angle a between the outer side edge of the clamping piece and the central line of the cylinder body shown in figure 3. One side of the bearing plate is provided with a high-strength anchor plate, a plurality of high-strength steel strands with the strength reaching 2400MPa are arranged in the high-strength anchor plate, one end of each high-strength steel strand is fixed on the high-strength anchor plate, and the other end of each high-strength steel strand penetrates through the barrel and extends outwards.
Six axial reinforcing ribs 6 are arranged between the pressure bearing plate and the first reinforcing ring rib; the axial reinforcing ribs are inwards sunken to form arc-shaped grooves 7; it should be noted that the groove of the present invention can also be a multi-sided groove. One side of one of the axial reinforcing ribs is provided with a grouting pipe 8, a diversion trench 14 is arranged in the grouting pipe, and the diversion trench penetrates through the grouting pipe and is connected with a cavity in the cylinder body. One end of the grouting pipe is fixed on the outer side of the bearing plate, and the other end of the grouting pipe is fixedly connected with the cylinder. The grouting pipe comprises a bottom side part 9 and an outer side part 10 which are fixed on the outer side of the pressure bearing plate, one end of the outer side part is connected with the bottom side part, and the other end of the outer side part is connected with the cylinder; the diversion trench penetrates through the bottom side part and the outer side part. The high-strength spiral rib is sleeved outside the cylinder body, and the bottom end of the high-strength spiral rib is propped against the grouting pipe.
And a reinforcing column base 11 is further arranged at the joint of the axial reinforcing rib and the bearing plate, and the section width of the reinforcing column base is larger than that of the axial reinforcing rib. The joint of the pressure bearing plate and the cylinder body is also provided with an annular flange 12, and the reinforcing column foot is fixed on the annular flange; the reinforcing column base is a triangular prism. Wherein, the outer edge of the second reinforcing ring rib is also provided with a convex fixing flange 13.
The embodiment of the utility model provides an in the embodiment, during the installation, at first with high-strength anchor backing plate, spiral muscle according to the pre-buried concrete of going into in the design position, when the concrete intensity reaches the designing requirement, penetrate the anchor backing plate with 2400MPa level high-strength steel strand wires in to pass the preformed hole of concrete, later at anchor backing plate bearing plate tip installation high-strength anchor plate, the clamping piece that excels in, carry out the prestressing force and stretch-draw, accomplish the installation of 2400MPa level high-strength steel strand wires anchor system.
The above-mentioned embodiments are only used for explaining the present invention, wherein the structure, connection mode, etc. of each component can be changed, all the equivalent transformation and improvement performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.
Claims (9)
1. The utility model provides a high-strength steel strand wires prestressed anchorage structure which characterized in that includes: the high-strength anchor comprises a high-strength steel strand, a high-strength anchor plate and a high-strength anchor backing plate, wherein the high-strength anchor backing plate comprises a conical barrel, a first reinforcing ring rib arranged along the circumferential direction of the barrel is arranged at one end with a larger outer diameter of the barrel, and the first reinforcing ring rib is arranged along the circumferential direction of the barrel at one end with a smaller outer diameter of the barrel; one side of the first reinforcing ring rib is provided with a high-strength anchor plate, a plurality of high-strength steel strands with the strength of 2400MPa are arranged in the high-strength anchor plate, one end of each high-strength steel strand is fixed on the high-strength anchor plate, and the other end of each high-strength steel strand penetrates through the barrel and extends outwards; a plurality of axial reinforcing ribs are arranged between the first reinforcing ring rib and the first reinforcing ring rib; the axial reinforcing rib is provided with a groove which is inwards sunken to form an arc shape or multiple sides.
2. The prestressed anchoring structure for high-strength steel strand as claimed in claim 1, wherein a reinforcing column base is further provided at the junction of said axial reinforcing rib and said first reinforcing ring rib, and the sectional width of said reinforcing column base is greater than the sectional width of said axial reinforcing rib.
3. The prestressed anchoring structure for high-strength steel strands as recited in claim 2, wherein said first reinforcement ring rib is further provided at a joint with said cylinder body with an annular flange, said reinforcement column shoe being fixed to said annular flange; the reinforcing column base is a triangular prism.
4. The high-strength strand prestressed anchoring structure of claim 1, wherein said number of said axial reinforcing ribs is six.
5. The prestressed anchoring structure for high-strength steel strand as claimed in claim 1, wherein one side of one of the axial reinforcing ribs is provided with a grouting pipe, a diversion trench is arranged inside the grouting pipe, the diversion trench penetrates through the grouting pipe and is connected with the cavity inside the cylinder; one end of the grouting pipe is fixed on the outer side of the first reinforcing ring rib, and the other end of the grouting pipe is fixedly connected with the cylinder body.
6. The prestressed anchoring structure for high-strength steel strands as claimed in claim 1, 2, 3, 4 or 5, wherein an end of said cylindrical body remote from said first annular reinforcing rib is provided with a third annular reinforcing rib circumferentially arranged along the cylindrical body.
7. The high-strength strand prestressed anchoring structure as claimed in claim 1, 2, 3, 4 or 5, wherein said high-strength anchor plate is provided with tapered fixing grooves; the high-strength steel strand is provided with a conical clamping piece, and the clamping piece is inserted into the fixing groove; the angle difference between the outer side taper edge of the high-strength anchor plate and the outer side edge of the clamping piece is 5-35 minutes.
8. The high-strength strand prestressed anchoring structure as claimed in claim 1, 2, 3, 4 or 5, wherein the inner edge of said first reinforcing ring rib is recessed inwardly to form an anchor slab installation groove for facilitating installation of the high-strength anchor slab.
9. The high-strength strand prestressed anchoring structure as claimed in claim 1, 2, 3, 4 or 5, further comprising a high-strength helical rib externally fitted around the cylindrical body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920616942.0U CN210104564U (en) | 2019-04-30 | 2019-04-30 | High-strength steel strand pre-stressed anchoring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920616942.0U CN210104564U (en) | 2019-04-30 | 2019-04-30 | High-strength steel strand pre-stressed anchoring structure |
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| Publication Number | Publication Date |
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| CN210104564U true CN210104564U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920616942.0U Active CN210104564U (en) | 2019-04-30 | 2019-04-30 | High-strength steel strand pre-stressed anchoring structure |
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| CN (1) | CN210104564U (en) |
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