CN220284603U - Tensioning end fixing structure applicable to fixed end tensioning ends with different heights - Google Patents
Tensioning end fixing structure applicable to fixed end tensioning ends with different heights Download PDFInfo
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- CN220284603U CN220284603U CN202321399058.9U CN202321399058U CN220284603U CN 220284603 U CN220284603 U CN 220284603U CN 202321399058 U CN202321399058 U CN 202321399058U CN 220284603 U CN220284603 U CN 220284603U
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- tensioning
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- 239000004568 cement Substances 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims abstract description 6
- 230000008719 thickening Effects 0.000 claims abstract description 3
- 210000002435 tendon Anatomy 0.000 claims description 30
- 230000001681 protective effect Effects 0.000 claims description 21
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000005253 cladding Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 13
- 230000002441 reversible effect Effects 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 210000003205 muscle Anatomy 0.000 abstract 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Reinforcement Elements For Buildings (AREA)
Abstract
The utility model provides a tensioning end fixing structure suitable for fixing tensioning ends with different heights, which is suitable for installing prestressed reinforcement with a large-span or non-horizontal structure, counteracts partial stress loss, prolongs the service time of the prestressed structure, and comprises prestressed reinforcement arranged in a beam and a plurality of reverse bending point protection sleeves for coating the prestressed reinforcement, wherein a plurality of tensioning end fixing structures which are linearly distributed are arranged behind the tensioning ends of the prestressed reinforcement, each tensioning end fixing structure is distributed with 1/2 prestressed reinforcement, an included angle formed by each 2 tensioning end fixing structures and the tensioning ends is smaller than 10 degrees, and the tensioning end fixing structures are fixed through local thickening cement pouring; the middle part of local thickened cement is provided with the reinforcing bar net piece, and stretch-draw end fixed knot constructs including the fixed group of U type muscle, and the U type bottom of the fixed group of U type muscle inserts in the roof beam, and the roof portion of the fixed group of U type muscle is fixed after passing the roof beam longitudinal bar and the reinforcing bar net piece of transversely setting in the roof beam in proper order.
Description
Technical Field
The utility model relates to the field of prestressed structures, in particular to a tensioning end fixing structure suitable for tensioning ends with different heights.
Background
The prestressed anchorage is an anchorage for prestressed tensioning of concrete, which is suitable for engineering construction. The method is commonly used in bridge construction, is used for pre-installing and positioning, then is used for pouring concrete, and is buried at two ends of the concrete, namely two ends of a corrugated pipe, and is an end face arranged for stabilizing a jack during tensioning.
However, conventional prestressed anchors have a fixed end provided with a tensioning end. However, when a beam body with a large span or a non-horizontal structure is encountered, the conventional prestress anchor can have self-stress loss, so that cracks appear.
Disclosure of Invention
The utility model aims to provide a tensioning end fixing structure suitable for tensioning ends with different heights, which can be suitable for the installation of prestressed reinforcement with a large-span or non-horizontal structure, counteracts part of stress loss and prolongs the service time of the prestressed structure.
Embodiments of the present utility model are implemented as follows:
the utility model provides a stretch-draw end fixed knot constructs suitable for high difference of stiff end stretch-draw end, including setting up the prestressed reinforcement in the roof beam and a plurality of back bending point protective sheath of cladding prestressed reinforcement, the stretch-draw end rear of this prestressed reinforcement is provided with a plurality of stretch-draw end fixed knot that are linear distribution constructs, and every stretch-draw end fixed knot constructs and distributes 1/2 prestressed reinforcement, and every 2 stretch-draw end fixed knot constructs and stretch-draw end forms the contained angle and is less than 10, and stretch-draw end fixed knot constructs and pours fixedly through local thickening cement.
In a preferred embodiment of the present utility model, the middle part of the locally thickened cement is provided with a reinforcing mesh.
In a preferred embodiment of the present utility model, the tensioning end fixing structure includes a U-shaped rib fixing group, a U-shaped bottom of the U-shaped rib fixing group is inserted into the beam, and a top of the U-shaped rib fixing group sequentially passes through a beam longitudinal rib and a reinforcing mesh arranged transversely in the beam and is then fixed.
In a preferred embodiment of the present utility model, each of the above-mentioned U-shaped rib fixing groups is formed of a plurality of rows of U-shaped ribs, and a space between each row of U-shaped ribs is 100-120mm.
In a preferred embodiment of the present utility model, the tension end fixing structure further includes: the slow-bonding prestressed tendons extend upwards from the prestressed tendons, and pass through the U-shaped tendon fixing groups; the spiral rib is sleeved on the tail section of the slow-bonding prestressed rib, and the spiral rib is arranged at the U-shaped rib fixing group; the bearing plate is sleeved on the slow-bonding prestressed rib, and the bottom of the bearing plate is abutted against the spiral rib; the slow bonding prestressed tendons pass through the tension end anchors, the tension end anchors are arranged on the surface of the bearing plate, and the tension end anchors are fixed in the locally thickened cement and are positioned below the reinforcing steel meshes.
In the preferred embodiment of the utility model, protective sleeves are arranged at the positions of the slow-bonding prestressed tendons respectively.
In a preferred embodiment of the present utility model, the protective sleeve includes: the Y-shaped protective sleeve comprises a Y-shaped protective sleeve body and an epoxy resin adhesive layer, wherein a through Y-shaped through hole is formed in the Y-shaped protective sleeve body, and the bifurcation included angle of the Y-shaped protective sleeve body is smaller than 10 degrees; the epoxy resin adhesive layer is arranged in the Y-shaped through hole.
In a preferred embodiment of the present utility model, the Y-shaped through hole includes a main through hole, a first lateral branch through hole penetrating the main through hole, and 1 or more oblique branch through holes.
The embodiment of the utility model has the beneficial effects that: compared with the traditional structure with only one tensioning end fixed point, the utility model has the advantages that the fixing effect is better, and the internal prestressed tendons can present natural curve effect for the cross beams with different heights of the tensioning ends of the fixed ends, so that the bearing capacity is provided, and no dead bending phenomenon exists.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prestressing structure according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a tensioned end structure according to an embodiment of the present utility model;
icon: the steel bar fixing device comprises a fixing end 100, a tensioning end 200, a prestressed rib 300, a reverse bending point protecting sleeve 400, a tensioning end fixing structure 210, local thickened cement 211, a steel bar net 212, a U-shaped rib fixing group 213, a slow bonding prestressed rib 214, a spiral rib 215, a bearing plate 216, a tensioning end anchor 217, a protecting sleeve 218, a Y-shaped protecting sleeve body 201, an epoxy resin adhesive layer 202 and a beam longitudinal rib 001.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
First embodiment
Referring to fig. 1 and 2, the present embodiment provides a prestress structure applicable to different heights of fixed ends and tension ends, which includes a fixed end 100, a plurality of tension ends 200, and a prestress rib 300 connecting the fixed end 100 and the plurality of tension ends 200. Wherein a plurality of tensioning ends 200 are fixed through a tensioning end 200 fixing structure, and a plurality of reverse bending point protection sleeves 400 for coating the prestressed tendons 300 are further arranged in the middle.
Compared with the conventional stretching end 200 corresponding to one fixed end 100, the stretching end in the utility model adopts graded stretching, which can reduce the stress loss of the tendon 300. And when the heights of the fixed end 100 and the tensioning end 200 are uneven, the hierarchical structure can relieve deflection and crack generation, and the strength and the service life of the beam body are improved.
Specifically, the fixing structures of the plurality of tensioning ends 200 are linearly distributed, each tensioning end 200 is provided with 1/2 prestressed tendons 300, an included angle formed by each 2 tensioning end fixing structures 210 and bifurcation points is smaller than 10 degrees, the tensioning end fixing structures 210 are fixed through pouring of local thickened cement 211, the thickness of the local thickened cement 211 is larger than 10cm, and a reinforcing steel mesh 212 is arranged in the middle of the local thickened cement 211 and used for reinforcing connection and increasing the strength of the local reinforced cement.
The tensioning end fixing structure 210 is vertically provided with a U-shaped rib fixing group 213, the U-shaped bottom of the U-shaped rib fixing group 213 is inserted into the beam, and the top of the U-shaped rib fixing group 213 sequentially penetrates through the beam longitudinal ribs 001 and the reinforcing steel bar meshes 212 which are transversely arranged in the beam to be fixed. Each specific U-shaped rib fixing group 213 is composed of a plurality of rows of U-shaped ribs, and the distance between each row of U-shaped ribs is 100-120mm.
The tensioning end fixing structure 210 further comprises a slow-bonding prestressed tendon 214, a spiral tendon 215, a bearing plate 216 and a tensioning end anchor 217, wherein the slow-bonding prestressed tendon 214 extends upwards from the prestressed tendon 300 in an inclined manner, the slow-bonding prestressed tendon 214 passes through the U-shaped tendon fixing group 213, and after passing through the U-shaped tendon fixing group 213, bundling is further arranged to fix the slow-bonding prestressed tendon 214 and the U-shaped tendon fixing group 213; the spiral rib 215 is sleeved on the tail section of the slow bonding prestress rib 214, and the spiral rib 215 is arranged at the U-shaped rib fixing group 213, so that centering reliability of the slow bonding prestress rib 214 is ensured; the bearing plate 216 is sleeved on the slow bonding prestress rib 214, and the bottom of the bearing plate 216 is abutted against the spiral rib 215; the slow-bonding prestressed tendons 214 pass through tension end anchors 217, the tension end anchors 217 are arranged on the surface of the bearing plate 216, and the tension end anchors 217 are fixed in the local thickened cement 211 and positioned below the reinforcing mesh 212, and are tightly attached to the bearing plate 216.
More specifically, protective sleeves 218 are provided at the respective locations of the slow-bonding tendons 214. The protective sheath 218 includes: the Y-shaped protective sleeve comprises a Y-shaped protective sleeve body 201 and an epoxy resin adhesive layer 202, wherein a through Y-shaped through hole is formed in the Y-shaped protective sleeve body 201, and the bifurcation included angle of the Y-shaped protective sleeve body 201 is smaller than 10 degrees; the epoxy adhesive layer 202 is disposed in the Y-shaped through hole. The Y-shaped through hole comprises a main through hole, a first transverse branch through hole communicated with the main through hole and 1 or more oblique branch through holes.
By using the protective sleeve 218 to protect the joint between the unbonded prestressed reinforcement and the slowly bonded prestressed reinforcement, the self-stress loss of the prestressed reinforcement 300 can be reduced, the service life of the prestressed structure can be prolonged, the tensile stress damage caused by external load can be prevented, and the protection function can be realized.
This description describes examples of embodiments of the utility model and is not intended to illustrate and describe all possible forms of the utility model. It should be understood that the embodiments in the specification may be embodied in many alternate forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present utility model. Those skilled in the art will appreciate that a plurality of features illustrated and described with reference to any one drawing may be combined with features illustrated in one or more other drawings to form embodiments not explicitly illustrated or described. The illustrated combination of features provides representative embodiments for typical applications. However, various combinations and modifications of the features consistent with the teachings of the present utility model may be used in particular applications or implementations as desired.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The utility model provides a stretch-draw end fixed knot constructs suitable for high difference of stiff end stretch-draw end, includes that set up prestressing tendons and a plurality of cladding in the roof beam prestressing tendons's the bending point protective sheath, its characterized in that, prestressing tendons's stretch-draw end rear is provided with a plurality of stretch-draw end fixed knot constructs that are linear distribution, every stretch-draw end fixed knot constructs the allocation has 1/2 prestressing tendons, every 2 stretch-draw end fixed knot constructs and stretch-draw end the contained angle that forms is less than 10, stretch-draw end fixed knot constructs and pours fixedly through local thickening cement.
2. The tensioning end fixing structure suitable for the difference in height of the fixing ends according to claim 1, wherein the middle part of the locally thickened cement is provided with a reinforcing mesh.
3. The tensioning end fixing structure suitable for the difference in height of the fixed ends and the tensioning ends according to claim 2, wherein the tensioning end fixing structure comprises a U-shaped rib fixing group, the U-shaped bottom of the U-shaped rib fixing group is inserted into a beam, and the top of the U-shaped rib fixing group sequentially penetrates through a beam longitudinal rib and the reinforcing steel mesh which are transversely arranged in the beam and is then fixed.
4. A tensioning end fixing structure adapted for use with fixed ends of different heights as claimed in claim 3, wherein each of said U-shaped rib fixing groups is formed of a plurality of rows of U-shaped ribs, and the spacing between each of said rows of U-shaped ribs is 100-120mm.
5. The tension end securing structure for use with fixed ends having different heights as recited in claim 4, further comprising:
the slow-bonding prestressed tendons extend upwards from the prestressed tendons in an inclined mode, and the slow-bonding prestressed tendons penetrate through the U-shaped tendon fixing groups;
the spiral rib is sleeved on the tail section of the slow bonding prestress rib, and the spiral rib is arranged at the U-shaped rib fixing group;
the bearing plate is sleeved on the slow-bonding prestress rib, and the bottom of the bearing plate is abutted against the spiral rib;
the stretching end anchor device is used for enabling the slow bonding prestressed tendons to penetrate through the stretching end anchor device, the stretching end anchor device is arranged on the surface of the bearing plate, and the stretching end anchor device is fixed in the local thickened cement and is located below the reinforcing steel mesh.
6. The tensioning end fixing structure suitable for the tensioning ends with different heights of the fixing ends according to claim 5, wherein protective sleeves are further arranged at the positions of the slow-bonding prestressed tendons respectively.
7. The tensioning end fixing structure adapted for use with fixed ends of differing tensioning end heights as set forth in claim 6, wherein said protective sleeve comprises:
the Y-shaped protective sleeve comprises a Y-shaped protective sleeve body, wherein a through Y-shaped through hole is formed in the Y-shaped protective sleeve body, and the bifurcation included angle of the Y-shaped protective sleeve body is smaller than 10 degrees;
the epoxy resin adhesive layer is arranged in the Y-shaped through hole.
8. The tensioning end fixing structure suitable for use in a fixed end tensioning end of different heights according to claim 7, wherein the Y-shaped through hole comprises a main through hole, a first lateral branch through hole penetrating the main through hole, and 1 or more oblique branch through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321399058.9U CN220284603U (en) | 2023-06-02 | 2023-06-02 | Tensioning end fixing structure applicable to fixed end tensioning ends with different heights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321399058.9U CN220284603U (en) | 2023-06-02 | 2023-06-02 | Tensioning end fixing structure applicable to fixed end tensioning ends with different heights |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220284603U true CN220284603U (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321399058.9U Active CN220284603U (en) | 2023-06-02 | 2023-06-02 | Tensioning end fixing structure applicable to fixed end tensioning ends with different heights |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220284603U (en) |
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2023
- 2023-06-02 CN CN202321399058.9U patent/CN220284603U/en active Active
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