CN216239871U - Broken line type external prestress reinforcing system for dispersive anchoring - Google Patents
Broken line type external prestress reinforcing system for dispersive anchoring Download PDFInfo
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- CN216239871U CN216239871U CN202120639598.4U CN202120639598U CN216239871U CN 216239871 U CN216239871 U CN 216239871U CN 202120639598 U CN202120639598 U CN 202120639598U CN 216239871 U CN216239871 U CN 216239871U
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- 238000004873 anchoring Methods 0.000 title claims abstract description 88
- 230000003014 reinforcing effect Effects 0.000 title abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 230000002787 reinforcement Effects 0.000 claims abstract description 21
- 239000006185 dispersion Substances 0.000 claims abstract description 15
- 238000013016 damping Methods 0.000 claims description 16
- 230000001154 acute effect Effects 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 11
- 239000004917 carbon fiber Substances 0.000 description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 210000002435 tendon Anatomy 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model provides a broken line type external prestress reinforcement system for a dispersion anchor, which comprises two anchor units (1), at least one steel strand (2) and a plurality of vibration reduction cable clamps (3), wherein the two anchor units (1) are respectively arranged at two ends of the bottom surface of a bridge, the anchor units (1) anchor the steel strand (2) and enable the steel strand (2) to be bent downwards in a broken line manner at the two ends, the vibration reduction cable clamps (3) are uniformly arranged on the bottom surface of the bridge between the anchor units (1), and the steel strand (2) penetrates through the vibration reduction cable clamps (3). The utility model ensures higher reinforcing efficiency through the end part steering and dispersing anchoring device and simultaneously meets the requirements of tensioning and anchoring structure and stress.
Description
Technical Field
The utility model relates to the field of structural reinforcement, in particular to a broken line type external prestress reinforcement system for a dispersion anchor.
Background
The external prestress method is a reliable method for reinforcing a concrete structure, and achieves the purposes of improving the structural stress distribution under a constant load state and improving the crack resistance and the bearing capacity of the structure by actively applying external prestress to the structure. The common external prestress strengthening system consists of a prestress structure (such as a high-strength steel strand, a high-strength steel wire, a high-strength steel bar, a high-strength carbon fiber plate and the like) and an anchoring structure, wherein the external prestress arranged in a broken line needs to be provided with a steering structure, and a vibration damping structure is also needed when the free length of the prestress structure is larger.
In the external prestress reinforcement of a beam body structure, for a small-span simply-supported T beam, the external prestress reinforcement method mainly adopted at present has two modes of arranging a prestress steel strand which is vertically bent at the beam end outside a web and linearly arranging a prestress carbon fiber plate on the bottom surface of a bottom plate: the former is similar to the external prestress arranged in the box girder, and adopts an integral steel bundle with larger sectional area, and needs a reliable steering and anchoring device; the carbon fiber plate is arranged at the bottom of the beam, so that higher reinforcing efficiency can be obtained, the carbon fiber plate is arranged closely to the bottom of the beam, the clearance under the bridge is less influenced, a special anchorage device and a clamp are required to be adopted for the prestressed carbon fiber plate, the production process control requirements of the carbon fiber plate and the anchor clamp are high, the yield is relatively low, the manufacturing cost of a high-quality prestressed carbon fiber plate reinforcing system is high, the carbon fiber plate has the defect of low breaking strength although the tensile strength is high, the carbon fiber plate is easy to damage due to scraping of vehicles and the like in the operation process, in addition, the fire resistance of the carbon fiber plate is poor, the external prestressed system is likely to fail after the prestressed system is subjected to fire, and unpredictable risks are brought to the structure and the safety of people and vehicles passing under the bridge.
The existing broken line type external prestress reinforcement system for the dispersive anchoring adopts an external beam arranged on a broken line at the bottom of a beam, and meets the requirements of tensioning and anchoring structures and stress while ensuring higher reinforcement efficiency through an end steering and dispersive anchoring device.
Disclosure of Invention
The utility model provides a broken line type dispersed anchoring external prestress reinforcing system, aiming at solving the problems that in the prior art, a linearly arranged prestress carbon fiber plate has low breaking strength, a reinforcing structure has the risk of being scratched and damaged by a passing vehicle, and large-area external prestress steel strands have stress concentration in an anchoring area.
The utility model provides a broken line type external prestress reinforcement system for a dispersion anchor, which comprises two anchor units, at least one steel strand and a plurality of vibration damping cable clamps, wherein the two anchor units are respectively arranged at two ends of the bottom surface of a bridge; the anchoring unit comprises anchoring seats, anchorage devices with the same number as the steel strands and steering devices with the same number as the steel strands, the anchoring seats are of plate-shaped structures, the anchoring seats are arranged on the bottom surfaces of two ends of the bridge through connecting bolts, the anchorage devices are arranged on the lower surfaces of the anchoring seats, the steering devices are arranged below the anchoring seats through the connecting bolts, the functional areas of the steering devices are coaxial with the functional areas of the anchorage devices, and the functional areas of the steering devices are arranged on the upper surfaces of the steering devices.
The utility model relates to a broken line type external prestress reinforcement system for a dispersion anchor, which is characterized in that as a preferred mode, an anchoring unit comprises anchoring seats, anchors with the same number as steel strands and steering gears with the same number as the steel strands, wherein the anchoring seats are of plate-shaped structures, the anchoring seats are arranged on the bottom surfaces of two ends of a bridge through connecting bolts, the anchors are arranged on the lower surfaces of the anchoring seats, the steering gears are arranged below the anchoring seats through the connecting bolts, a functional area of the steering gears is coaxial with a functional area of the anchors, and a functional area of the steering gears is arranged on the upper surfaces of the steering gears.
The utility model relates to a broken line type external prestress reinforcement system for a dispersion anchor, which comprises a first fixing plate, a second fixing plate, a supporting plate, an anchoring plate and an anchoring backing plate as a preferable mode, wherein the first fixing plate and the second fixing plate are arranged on the bottom surface of an anchoring seat in parallel, the supporting plate is arranged on one side of the first fixing plate and one side of the second fixing plate and is vertical to the first fixing plate and the second fixing plate, the surface of the supporting plate connected with the first fixing plate is parallel to the opposite surface of the supporting plate, the angle between the side of the supporting plate connected with the first fixing plate and the second fixing plate and the anchoring seat is an acute angle, the anchoring backing plate is arranged on the other side of the supporting plate in a contact mode, the free surface of the anchoring backing plate is provided with the anchoring plate in a contact mode, the anchoring plate, the anchoring backing plate and the supporting plate are provided with through holes for enabling steel strands to penetrate through at the same surface, and the anchoring plate is used for anchoring the steel strands.
The utility model relates to a broken line type external prestress reinforcement system for a dispersion anchor, which is characterized in that as a preferred mode, a steering gear comprises a steering gear body, a guide groove and a plurality of paired mounting screw holes, wherein the steering gear body is of a strip structure, the horizontal height of the upper surface of one end of the steering gear body is lower than that of the upper surface of the other end of the steering gear body, the mounting screw holes are symmetrically and vertically arranged on two sides of the steering gear body and used for fixing the steering gear body below an anchor seat through mounting bolts, and the guide groove is arranged on the upper surface of the steering gear body along the slope of the upper surface.
According to the broken line type external prestress reinforcing system for the dispersion anchor, as an optimal mode, the upper surface of the steering gear is lowered towards the two sides of a bridge.
According to the broken line type external prestress reinforcing system for the dispersion anchor, as a preferred mode, a cushion block is sleeved on a mounting bolt of a steering gear above the steering gear, and the height of the cushion block is gradually increased towards two ends of a bridge.
The utility model relates to a broken line type external prestress reinforcement system for a dispersion anchor, which is characterized in that a vibration damping cable clamp comprises a limiting steel part, a plurality of elastic blocks and an anchor bolt as a preferred mode, wherein the upper surface of the limiting steel part is provided with a plurality of longitudinal limiting through grooves, the elastic blocks are arranged in the limiting through grooves, the elastic blocks are provided with a plurality of longitudinal through holes, the sum of the longitudinal through holes of each elastic block is equal to the number of steel strands, the steel strands penetrate through the longitudinal through holes, the limiting steel part and the elastic blocks are provided with vertical mounting holes which are different from the projection of the longitudinal through holes in the direction perpendicular to the longitudinal through holes, and the anchor bolt is used for mounting the limiting steel part on the bottom surface of a bridge through the mounting holes.
The utility model has the following beneficial effects:
(1) the external prestress reinforcement is carried out on the beam body in a mode that a plurality of small-area high-strength steel strands are distributed on the bottom surface of the beam body, so that the steel strands can be conveniently dispersed and anchored through a small anchoring structure, and the stress concentration effect of an anchoring area is reduced;
(2) considering that the linear beam distribution scheme has larger distance between the steel beam and the beam bottom due to the requirements of anchoring and tensioning spaces at two ends of the steel beam, the clearance height of the beam bottom is obviously reduced, the risk that the reinforcing structure is scratched and damaged by the passing vehicle is increased, and the purpose that the clearance height under the bridge is not obviously reduced when the newly added steel beam is striden is achieved by arranging the steering device at the end part of the steel beam;
(3) the steering device is arranged at the position close to the anchoring end of the steel bundle, and a modularized small steel member is adopted, so that the steering device is reliable in stress, small, exquisite and flexible and convenient to assemble;
(4) in order to reduce the adverse effect of structural vibration on the prestressed tendons in the operation process, vibration-damping cable clamps are arranged on the prestressed tendons at certain intervals along the longitudinal direction, so that the characteristic that the net distance between the steel tendons and the beam bottom is small is adapted;
(5) the cable clamp adopts a reverse buckling type small-sized limiting steel part, and modular damping rubber convenient to install is arranged between the steel part and the steel strand (with PE protection).
Drawings
FIG. 1 is a schematic view of a broken-line type external prestressed reinforcement system for a distributed anchor;
FIG. 2 is a schematic view of an anchoring unit of a broken-line type distributed anchoring external prestress reinforcing system;
FIG. 3 is a schematic view of an anchor of a broken-line type distributed anchor external prestressed reinforcement system;
FIG. 4 is a schematic view of a deflector of a broken-line type distributed anchor external prestressing reinforcing system;
FIG. 5 is a schematic view of a damping cable clamp of the broken line type distributed anchoring external prestress reinforcing system.
Reference numerals:
1. an anchoring unit; 11. an anchoring seat; 12. an anchorage device; 121. a first fixing plate; 122. a second fixing plate; 123. a support plate; 124. an anchoring plate; 125. an anchor backing plate; 13. a diverter; 131. a diverter body; 132. a guide groove; 133. mounting a screw hole; 2. steel strand wires; 3. a vibration damping cable clamp; 31. a limiting steel part; 32. an elastic block; 33. an anchor bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
As shown in fig. 1, a broken line type external prestress reinforcement system for dispersive anchoring comprises two anchoring units 1, at least one steel strand 2 and a plurality of damping cable clamps 3, wherein the two anchoring units 1 are respectively arranged at two ends of the bottom surface of a bridge, the anchoring units 1 anchor the steel strand 2 and make the steel strand 2 bend downwards in a broken line at the two ends, the damping cable clamps 3 are uniformly arranged on the bottom surface of the bridge between the anchoring units 1, and the steel strand 2 passes through the damping cable clamps 3.
As shown in fig. 2, the anchoring unit 1 includes an anchoring seat 11, anchorages 12 having the same number as the number of the steel strands 2, and deflectors 13 having the same number as the number of the steel strands 2, the anchoring seat 11 is a plate-shaped structure, the anchoring seats 11 are disposed on bottom surfaces of two ends of the bridge through connecting bolts, the anchorages 12 are disposed on a lower surface of the anchoring seat 11, the deflectors 13 are disposed below the anchoring seat 11 through the connecting bolts, a functional region of the deflector 13 is coaxial with a functional region of the anchorages 12, and the functional region of the deflector 13 is disposed on an upper surface of the deflector 13.
As shown in fig. 3, the anchorage device 12 includes a first fixing plate 121, a second fixing plate 122, a supporting plate 123, an anchoring plate 124 and an anchoring backing plate 125, wherein the first fixing plate 121 and the second fixing plate 122 are disposed on the bottom surface of the anchoring seat 11 in parallel, the supporting plate 123 is disposed on one side of the first fixing plate 121 and the second fixing plate 122 and perpendicular to the first fixing plate 121 and the second fixing plate 122, the plate surface of the supporting plate 123 connected to the first fixing plate 121 is parallel to the opposite surface of the supporting plate 123, the angle between the supporting plate 123 and the anchoring seat 11 on the side connected to the first fixing plate 121 and the second fixing plate 122 is an acute angle, the anchoring backing plate 125 is disposed on the other side of the supporting plate 123 in contact, the free surface of the anchoring backing plate 125 is disposed in contact with the anchoring plate 124, the anchoring backing plate 125 and the supporting plate 123 are disposed on the same plate surface position with a through hole for the steel strand 2 to pass through, and the anchoring plate 124 is used for anchoring the steel strand 2.
As shown in fig. 4, the steering gear 13 includes a steering gear body 131, a guide groove 131 and a plurality of paired installation screw holes 133, the steering gear body 131 is a strip-shaped structure, the horizontal height of the upper surface of one end of the steering gear body 131 is lower than the horizontal height of the upper surface of the other end of the steering gear body 131, the installation screw holes 133 are symmetrically and vertically disposed on two sides of the steering gear body 131, and are used for fixing the steering gear body 131 below the anchoring seat 11 through installation bolts, and the guide groove 131 is disposed on the upper surface of the steering gear body 131 along the slope of the upper surface. The upper surface of the diverter 13 is lowered towards the two sides of the bridge. The mounting bolt of the steering gear 13 is sleeved with a cushion block above the steering gear 13, and the height of the cushion block is gradually increased towards the two ends of the bridge.
As shown in fig. 5, the damping cable clamp 3 includes a limiting steel member 31, a plurality of elastic blocks 32 and an anchor bolt 33, the upper surface of the limiting steel member 31 is provided with a plurality of longitudinal limiting through grooves, the elastic blocks 32 are arranged inside the limiting through grooves, the elastic blocks 32 are provided with a plurality of longitudinal through holes, the sum of the longitudinal through holes of each elastic block 32 is equal to the number of steel strands 2, the steel strands 2 pass through the longitudinal through holes, the vertical longitudinal through hole directions of the limiting steel member 31 and the elastic blocks 32 are provided with vertical mounting holes which are different from the projection of the longitudinal through holes, and the anchor bolt 33 installs the limiting steel member 31 on the bottom surface of the bridge through the mounting holes.
The height of the elastic block 32 is less than that of the limiting steel piece 31.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides an external prestressing force of broken line formula dispersion anchor system of consolidating which characterized in that: the steel strand vibration damping device comprises two anchoring units (1), at least one steel strand (2) and a plurality of vibration damping cable clamps (3), wherein the two anchoring units (1) are respectively arranged at two ends of the bottom surface of a bridge, the anchoring units (1) anchor the steel strand (2) and enable the steel strand (2) to be bent downwards in a folding line manner at two ends, the vibration damping cable clamps (3) are uniformly arranged on the bottom surface of the bridge between the anchoring units (1), and the steel strand (2) penetrates through the vibration damping cable clamps (3); the anchoring unit (1) comprises anchoring seats (11), anchorage devices (12) with the same number of the steel strands (2) and steering devices (13) with the same number of the steel strands (2), wherein the anchoring seats (11) are of plate-shaped structures, the anchoring seats (11) are arranged on the bottom surfaces of two ends of a bridge through connecting bolts, the anchorage devices (12) are arranged on the lower surfaces of the anchoring seats (11), the steering devices (13) are arranged below the anchoring seats (11) through the connecting bolts, functional areas of the steering devices (13) are coaxial with the functional areas of the anchorage devices (12), and the functional areas of the steering devices (13) are arranged on the upper surfaces of the steering devices (13).
2. The broken line type dispersion anchor external prestress reinforcement system according to claim 1, wherein: the anchorage device (12) comprises a first fixing plate (121), a second fixing plate (122), a supporting plate (123), an anchoring plate (124) and an anchoring backing plate (125), wherein the first fixing plate and the second fixing plate are arranged on the bottom surface of the anchoring seat (11) in parallel, the supporting plate (123) is arranged on one side of the first fixing plate (121) and one side of the second fixing plate (122) and is perpendicular to the first fixing plate (121) and the second fixing plate (122), the surface of the supporting plate (123) connected with the first fixing plate (121) is parallel to the opposite surface of the supporting plate (123), the angle between one side of the supporting plate (123) connected with the first fixing plate (121) and the second fixing plate (122) and the anchoring seat (11) is an acute angle, the anchoring backing plate (125) is arranged on the other side of the supporting plate (123) in a contact manner, and the anchoring plate (124) is arranged on the free surface of the anchoring backing plate (125) in a contact manner, the anchoring plate (124), the anchoring backing plate (125) and the supporting plate (123) are provided with through holes for enabling the steel strands (2) to penetrate through at the same plate surface position, and the anchoring plate (124) is used for anchoring the steel strands (2).
3. The broken line type dispersion anchor external prestress reinforcement system according to claim 1, wherein: the steering gear (13) comprises a steering gear body (131), a guide groove (132) and a plurality of paired mounting screw holes (133), the steering gear body (131) is of a strip-shaped structure, the horizontal height of the upper surface of one end of the steering gear body (131) is lower than that of the upper surface of the other end of the steering gear body (131), the mounting screw holes (133) are symmetrically and vertically arranged on two sides of the steering gear body (131) and used for fixing the steering gear body (131) below the anchoring seat (11) through mounting bolts, and the guide groove (132) is arranged on the upper surface of the steering gear body (131) along the gradient of the upper surface.
4. The broken line type dispersion anchor external prestress reinforcement system according to claim 3, wherein: the upper surface of the steering gear (13) is lowered towards the two sides of the bridge.
5. The broken line type dispersion anchor external prestress reinforcement system of claim 4, wherein: the mounting bolt of the steering gear (13) is sleeved with a cushion block above the steering gear (13), and the height of the cushion block is gradually increased towards the two ends of the bridge.
6. The broken line type dispersion anchor external prestress reinforcement system according to claim 1, wherein: damping cable clamp (3) are including spacing steel part (31), a plurality of elastic block (32) and crab-bolt (33), spacing steel part (31) upper surface is provided with a plurality of fore-and-aft spacing logical grooves, elastic block (32) set up in spacing logical inslot portion, elastic block (32) are provided with a plurality of vertical through-holes, each elastic block (32) vertical through-hole sum equals steel strand wires (2) quantity, steel strand wires (2) pass vertical through-hole, spacing steel part (31) with elastic block (32) are perpendicular vertical through-hole direction be provided with vertical with the different mounting hole of position of vertical through-hole projection, crab-bolt (33) pass through the mounting hole will spacing steel part (31) is installed the bridge bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120639598.4U CN216239871U (en) | 2021-03-30 | 2021-03-30 | Broken line type external prestress reinforcing system for dispersive anchoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120639598.4U CN216239871U (en) | 2021-03-30 | 2021-03-30 | Broken line type external prestress reinforcing system for dispersive anchoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216239871U true CN216239871U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120639598.4U Active CN216239871U (en) | 2021-03-30 | 2021-03-30 | Broken line type external prestress reinforcing system for dispersive anchoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216239871U (en) |
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2021
- 2021-03-30 CN CN202120639598.4U patent/CN216239871U/en active Active
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