CN107165060B - Bridge prestressing force high strength wire rope bending resistance reinforcing apparatus - Google Patents
Bridge prestressing force high strength wire rope bending resistance reinforcing apparatus Download PDFInfo
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- CN107165060B CN107165060B CN201710499327.1A CN201710499327A CN107165060B CN 107165060 B CN107165060 B CN 107165060B CN 201710499327 A CN201710499327 A CN 201710499327A CN 107165060 B CN107165060 B CN 107165060B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention discloses a bridge prestress high-strength steel wire rope bending-resistant reinforcing device which comprises a steel wire rope and an anchoring device for anchoring the steel wire rope, wherein the anchoring device comprises a first T-shaped angle steel, a second T-shaped angle steel and a high-strength screw rod with a hole at the tail part, which are fixed into a whole; the two first T-shaped angle steels are respectively and correspondingly arranged at two ends of the bottom surface of the bridge base body, the plurality of second T-shaped angle steels are respectively and equidistantly arranged between the two first T-shaped angle steels on the bottom surface of the bridge base body, the free ends of the two screw rods are respectively and correspondingly arranged on the first T-shaped angle steels and are screwed on the first T-shaped angle steels through nuts arranged, the steel wire ropes penetrate through the second T-shaped angle steels, the two ends of the steel wire ropes respectively penetrate through the tail parts of the screw rods, and the penetrating parts of the steel wire ropes and the corresponding steel wire ropes are fastened together through fasteners. Compared with the prior art, the high-strength steel wire rope is tensioned, namely prestress is applied, and interface peeling damage of the reinforcing layer can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of bridge reinforcement, in particular to a bridge prestress high-strength steel wire rope bending-resistant reinforcing device.
Background
The bridge is an important component of the life line engineering, namely the throat of a traffic junction, and the damage of the bridge can cause the interruption of the life line, so that the loss is immeasurable. The bridge is often needed to be reinforced due to factors such as easy aging of outdoor environment work, improved design standard, damage caused by traffic accidents and the like.
At present, a plurality of reinforcing methods for bridge structures exist in China, and the common methods comprise a sectional area increasing method, a steel wrapping method, a steel plate pasting method, a fiber pasting method, a prestress reinforcing method and the like; these conventional reinforcement methods have the following problems; (1) The steel sticking method and the steel cladding method have the advantages of heavy material self weight, complex construction and poor corrosion resistance; (2) The method for sticking the carbon fiber is not obvious in rigidity improvement, is not suitable for the condition of low concrete strength, and is easy to generate interface peeling damage of the reinforcing layer; (3) The traditional bridge reinforcing technology has the advantages of large reinforcing work amount, high labor cost, high later maintenance cost, large influence of construction on the environment and incapability of realizing green construction.
Meanwhile, although the steel strand mesh reinforcement technology widely applied to the field of building structure reinforcement has the advantages of small self weight, fire prevention, environmental protection, good durability, easy construction, superior reinforcement performance and the like, the prior steel strand mesh reinforcement technology is still applied to the field of bridge reinforcement and has the following problems: (1) The reinforcing technology is easy to peel and damage, seriously influences the exertion of the strength of the steel strand and is not suitable for the field of bridge reinforcement with various load working conditions and complex engineering environment; (2) Aiming at the field of building structure reinforcement, the diameters of the selected steel strands are small, and the diameters of the steel strands cannot adapt to the field of bridge reinforcement with large reinforcement engineering quantity and high reinforcement requirement.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
The invention aims to provide a high-prestress and high-strength steel wire rope bending-resistant reinforcing device for a bridge, which can effectively avoid the interface peeling damage of a reinforcing layer, ensure the structural integrity, adapt to the large engineering quantity, large span, high reinforcing requirement and fatigue load action of bridge reinforcement, and has the advantages of simple structure, easy realization and strong practicability.
In order to achieve the above purpose, the solution of the invention is as follows:
a bridge prestress high-strength steel wire rope bending-resistant reinforcing device comprises a high-strength steel wire rope and an anchoring device for anchoring the high-strength steel wire rope, wherein the anchoring device comprises a first T-shaped angle steel, a second T-shaped angle steel and a high-strength screw rod, the first T-shaped angle steel and the second T-shaped angle steel are integrally fixed, the high-strength screw rod is provided with a hole at the tail part, and the first T-shaped angle steel and the second T-shaped angle steel are identical in structure;
the two first T-shaped angle steels are respectively and correspondingly arranged at two ends of the bottom surface of the bridge base body, the plurality of second T-shaped angle steels are respectively and equidistantly arranged on the bottom surface of the bridge base body and correspond to the two first T-shaped angle steels, the free ends of the two high-strength screw rods are respectively and correspondingly arranged on the first T-shaped angle steels and are screwed on the first T-shaped angle steels through the arranged high-strength nuts, the high-strength steel wire ropes penetrate through the second T-shaped angle steels, the two ends of the high-strength steel wire ropes respectively and correspondingly penetrate through the tail parts of the high-strength screw rods, and the penetrating parts of the high-strength steel wire ropes and the corresponding high-strength steel wire ropes are fastened together through fasteners.
First T type angle steel includes mutually perpendicular's first horizontal steel sheet and first vertical steel sheet, second T type angle steel includes mutually perpendicular's second horizontal steel sheet and the vertical steel sheet of second, first vertical steel sheet with the vertical steel sheet parallel arrangement of second.
The first horizontal steel plate and the second horizontal steel plate are respectively and correspondingly screwed on the bridge base body through high-strength bolts and high-strength nuts.
The first vertical steel plate is provided with a first anchoring hole for the free end of the high-strength screw to pass through, and the free end of the high-strength screw is screwed on the first vertical steel plate through a matched high-strength nut; and each second vertical steel plate is provided with a second anchoring hole for the high-strength steel wire rope to pass through.
And high-strength steel sleeves are fixedly arranged at the positions of the high-strength steel wire ropes corresponding to the second vertical steel plates respectively.
The buckling piece is a square aluminum buckle.
After adopting the structure, the invention has the following beneficial effects: because the high-strength steel wire rope is tensioned and both ends of the high-strength steel wire rope are anchored on the bottom surface of the bridge matrix, and the high-strength steel wire rope is used as a reinforcing material, compared with the prior art, the high-strength steel wire rope can effectively avoid the peeling and the damage of the interface of the reinforcing layer of the traditional reinforcing device, ensure the reinforcing effect, ensure the integrity of the structure, bear the fatigue load of the bridge, effectively improve the bending fatigue resistance of the bridge, and has the advantages of simple structure, easy realization and strong practicability;
furthermore, as the reinforcing device is arranged on the bottom surface of the bridge base body and is a reinforcing device outside the bridge body, traffic does not need to be closed during construction;
furthermore, the high-strength steel wire rope is tensioned on the corresponding position of the bridge base body through the matching of the high-strength bolt, the high-strength nut, the high-strength screw rod and the high-strength nut, so that the reinforcing device can be repeatedly disassembled and assembled, the manufacturing cost of each reinforcing material is low, and the overall construction cost is low;
furthermore, the high-strength steel sleeves are respectively fixed at the second T-shaped angle steel, so that the high-strength steel wire rope is fixedly connected to the second T-shaped angle steel, and the bearing capacity of the bridge is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged schematic view of a in fig. 1.
Fig. 3 is an enlarged schematic view of B in fig. 1.
In the figure;
1-bridge base body 2-high-strength steel wire rope
3-first T-shaped angle steel 31-first horizontal steel plate
32-first vertical steel plate 321-first anchoring hole
4-second T-shaped angle steel 41-second horizontal steel plate
42-second vertical steel plate 421-second anchoring hole
5-high-strength screw 51-mounting hole
52-high-strength nut 61-high-strength bolt
62-high-strength nut 7-aluminum buckle
8-high-strength steel sleeve
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
The invention discloses a bridge prestress high-strength steel wire rope bending-resistant reinforcing device, which comprises a high-strength steel wire rope 2 and an anchoring device for anchoring the high-strength steel wire rope 2, wherein the high-strength steel wire rope 2 is arranged on the bottom surface of a bridge base body 1 along the length direction of the bridge base body 1, the anchoring device comprises a first T-shaped angle steel 3, a second T-shaped angle steel 4 and a high-strength screw 5, the first T-shaped angle steel 3, the second T-shaped angle steel 4 and the high-strength screw 5 are fixed into a whole, a mounting hole 51 is formed in the tail end of the high-strength screw 5, the first T-shaped angle steel 3 and the second T-shaped angle steel 4 are respectively formed by fixedly connecting two angle steels, and the first T-shaped angle steel 3 and the second T-shaped angle steel 4 are identical in structure.
Specifically, as shown in fig. 1-2, two first T-shaped angle steels 3 are respectively installed at two ends of the bottom clear span of the bridge base 1, and a plurality of second T-shaped angle steels 4 are installed between the bottom clear spans of the bridge base 1 at equal intervals, wherein the first T-shaped angle steels 3 include a first horizontal steel plate 31 and a first vertical steel plate 32 which are perpendicular to each other, the second T-shaped angle steels 4 include a second horizontal steel plate 41 and a second vertical steel plate 42 which are perpendicular to each other, the first horizontal steel plate 31 and the second horizontal steel plate 41 are formed by joining corresponding surfaces of the two angle steels in parallel, and the first vertical steel plate 32 and the second vertical steel plate 42 are formed by overlapping corresponding surfaces of the two angle steels; the first horizontal steel plate 31 and the second horizontal steel plate 41 are both in contact with the bottom surface of the bridge base body 1, and the first vertical steel plate 32 and the second vertical steel plate 42 are respectively arranged perpendicular to the length direction of the bottom surface of the bridge base body 1. In the invention, the number of the second T-shaped angle steels 4 is arranged according to the length of the actual bridge base 1 and the actual construction condition, and is not limited herein.
Preferably, the high strength steel wire rope is a steel wire rope with a diameter of more than 8mm, 6 × 7+ iws, and in this embodiment, the high strength steel wire rope is a galvanized high strength steel wire rope.
Furthermore, two ends of the bottom surface of the bridge base body 1 and two sides of the corresponding first horizontal steel plate 31 are respectively provided with a first mounting hole in opposite position, two ends of the bottom surface of the bridge base body 1 and two sides of the corresponding second horizontal steel plate 41 are respectively provided with a second mounting hole in opposite position, and the first mounting hole and the second mounting hole in opposite position are respectively provided with a high-strength bolt 61, at the moment, each high-strength bolt 61 is respectively connected with the corresponding first mounting hole and the corresponding second mounting hole by a commonly used bar planting method in the building field, namely, each high-strength bolt 61 is bonded with the bridge base body; then, the first horizontal steel plate 31 and the second horizontal steel plate 41 are respectively screwed and locked on the bottom surface of the bridge base body 1 through the arranged high-strength nuts 62, namely, the first T-shaped angle 3 and the second T-shaped angle 4 are fixedly installed on the bottom surface of the bridge base body 1. Preferably, in order to tightly fix all the first T-shaped angle steels 3 and the second T-shaped angle steels 4 on the bottom surface of the bridge base 1, four first mounting holes with equal intervals are formed in each first horizontal steel plate 31, and four second mounting holes with equal intervals are formed in each second horizontal steel plate 41. Preferably, the high-strength bolt 61 has a diameter 5 times as deep as the first mounting hole or the second mounting hole and a diameter not less than 150mm.
Furthermore, two first vertical steel plates 32 are respectively provided with a first anchoring hole 321, each second vertical steel plate 42 is respectively provided with a second anchoring hole 421, each first anchoring hole 321 and each second anchoring hole 421 are positioned on the same straight line along the length direction of the bottom surface of the bridge base body 1, the two first anchoring holes 321 are respectively provided with the high-strength screw rods 5, the free ends of the two high-strength screw rods 5 are respectively screwed on the corresponding first vertical steel plates 32 through the arranged high-strength nuts 52, and the tail end surfaces of the two high-strength screw rods 5 are arranged oppositely. Preferably, a gasket is screwed between the free end of the high-strength screw 5 and the corresponding high-strength nut 52 to effectively prevent the corresponding high-strength nut 52 from loosening. Preferably, the length of the high-tensile screw 5 is 10 times the diameter of the high-tensile screw 5 and the length thereof is not shorter than 120mm.
Further, as shown in fig. 2, the processing of both ends of the high tensile cord 2 is: the high-strength steel wire rope 2 sequentially passes through the second anchoring holes 421, then the two ends of the high-strength steel wire rope 2 respectively pass through the corresponding mounting holes 51 of the high-strength screw rods 5, the passing part and the corresponding high-strength steel wire rope 2 are fastened together through a buckling piece, and the remaining passing part is not shorter than 50mm. In this embodiment, the fastener is an aluminum buckle 7, the portion of the high-strength steel wire rope 2 passing through the installation hole 51 and the corresponding portion of the high-strength steel wire rope both pass through the aluminum buckle 7, and the aluminum buckle 7 is pressed by existing common hydraulic equipment, so that the portion of the high-strength steel wire rope 2 passing through the installation hole 51 and the corresponding portion of the high-strength steel wire rope 2 are fastened together. Preferably, in order to prevent the high-strength steel wire rope 2 from being pulled out of the aluminum buckles 7, the two ends of the high-strength steel wire rope 2 are respectively exposed a little from the corresponding aluminum buckles 7, and the anchoring length of the two ends of the high-strength steel wire rope 2 is 5 times of the diameter of the high-strength steel wire rope 2.
In the invention, the number of the high-strength steel wire ropes 2 is selected according to the width of the bridge base body 1 in actual construction so as to reasonably distribute the prestress applied to the bridge base body 1.
When the bottom surface of the bridge base body 1 is provided with the plurality of high-strength steel wire ropes 2 along the transverse direction thereof, taking 3 as an example, the two first vertical steel plates 32 are respectively provided with three first anchoring holes 321 along the transverse direction of the bottom surface of the bridge base body 1 at equal intervals, each first anchoring hole 321 on the two first vertical steel plates 32 is respectively arranged in pairs, each second vertical steel plate 42 is provided with a second anchoring hole 421 corresponding to each first anchoring hole 321 along the transverse direction of the bottom surface of the bridge base body 1, so that each first anchoring hole 321 and the corresponding second anchoring hole 421 are respectively positioned on three straight lines along the length direction of the bottom surface of the bridge base body 1. Meanwhile, the high-strength screws are respectively mounted on the first anchoring holes 321 in the manner described above.
Furthermore, each time the high-strength steel wire rope 2 passes through one second anchoring hole 421, one high-strength steel sleeve 8 is sleeved, and after the two ends of each high-strength steel wire rope 2 are respectively tensioned and fixed on the corresponding first T-shaped angle steel 3, each high-strength steel sleeve 8 is filled with an adhesive, so that one end of each high-strength steel sleeve 8 is respectively fixed and contacted with the corresponding second vertical steel plate 42, and the high-strength steel wire rope 2 is further fixedly connected on each second T-shaped angle steel 4, so that the bearing capacity of the bridge is improved. Wherein, the adhesive adopts bar planting glue or epoxy glue. Preferably, the inner diameter of the high strength steel sleeve 8 is 2mm more than the diameter of the high strength steel cord 2, and the wall thickness of the high strength steel sleeve 8 is more than 5mm, and the length thereof is 10 times and more than 100mm of the diameter of the high strength steel cord 2.
Compared with the prior art, through the tensioning of the high-strength steel wire rope 2, the prestress is applied, the interface stripping damage of the reinforcing layer can be effectively avoided, and the installation mode of the reinforcing device can know that the reinforcing device can adapt to the large engineering quantity, large span, high reinforcing requirement and fatigue load action of bridge reinforcing, has a simple structure, is convenient and quick to construct, and is suitable for bridge and beam slab with insufficient bearing capacity and bridge bending fatigue reinforcing with damage.
The invention also provides a construction method of the bridge prestress high-strength steel wire rope bending-resistant reinforcing device according to the embodiment, which comprises the following steps:
(1) Determining the number of high-strength steel wire ropes 2, second T-shaped angle steels 4 and high-strength screws 5 according to the actual construction condition, and determining the installation positions of the first T-shaped angle steels 3 and the second T-shaped angle steels 4 which are installed at equal intervals along the clear span of the bridge base body 1, the positions of the high-strength screws 5 which are fixedly installed in first anchoring holes 321 of the first T-shaped angle steels 3 and the positions of the high-strength steel wire ropes 2 which penetrate through second anchoring holes 421 on the second vertical steel plates 42;
(2) According to the number determined by the first T-shaped angle steel 3 and the second T-shaped angle steel 4 in the step (1), preparing angle steels with the same size, splicing every two angle steels to form the first T-shaped angle steel 3 and the second T-shaped angle steel 4, wherein the first T-shaped angle steel 3 comprises a first horizontal steel plate 31 and a first vertical steel plate 32, and the second T-shaped angle steel 4 comprises a second horizontal steel plate 41 and a second vertical steel plate 42;
(3) Four first mounting holes and four second mounting holes with equal intervals are respectively drilled on each first horizontal steel plate 31 and each second horizontal steel plate 42, and a first anchoring hole 321 and a second anchoring hole 421 are respectively drilled on each first vertical steel plate 32 and each second vertical steel plate 42;
(4) Performing chiseling treatment on the bottom surface of a bridge base body 1, respectively drilling bridge mounting holes along the clear span of the bridge base body according to the mounting positions of the first T-shaped angle steel 3 and the second T-shaped angle steel 4 determined in the step (1) after the chiseling treatment is finished, wherein the bridge mounting holes in each mounting position respectively correspond to the first mounting holes and the second mounting holes in the corresponding first horizontal steel plate 31 and the second horizontal steel plate 41, the hole diameter of each bridge mounting hole is 2mm larger than that of the high-strength screw 5 prepared in the step (1), the hole depth is 6 times of the hole diameter, and the hole diameter is larger than 100mm;
(5) Cleaning all the bridge mounting holes, the first anchoring holes, the second anchoring holes, the first mounting holes and the second mounting holes in the steps (3) and (4), and fixing the high-strength bolts 61 prepared in the step (1) in the corresponding bridge mounting holes respectively in a bar planting manner; after the strength meets the requirement, the first horizontal steel plate 31 in the step (4) is installed together with the corresponding high-strength bolt 61 through the drilled first installation hole, and the high-strength nut 62 is screwed in, so that the first T-shaped angle steel 3 is fixed at two ends of the bottom clear span of the bridge base body 1; meanwhile, the second horizontal steel plate 41 in the step (4) is installed together with the corresponding high-strength bolt 61 through each drilled second installation hole, and the matched high-strength nut 62 is screwed in, so that the second T-shaped angle iron 4 is fixed on the bottom clear span of the bridge base body 1;
(6) Cutting the high-strength steel wire rope 2 in the step (1) according to the net span length of the bridge base body, wherein construction allowance when the high-strength steel wire rope 2 is tightened and prestressed and the length of the high-strength steel wire rope 2 which is remained when two ends of the high-strength steel wire rope are anchored are considered during cutting;
(7) Penetrating the high-strength steel wire rope 2 in the step (6) through second anchoring holes 421 on each second vertical steel plate 42 in the step (3), stretching two ends of the high-strength steel wire rope according to the requirement of prestress, penetrating the two ends of the high-strength steel wire rope through corresponding aluminum buckles 7 respectively, penetrating the tail of the high-strength screw 51 in the step (1), penetrating the aluminum buckles which are penetrated once originally, exposing a little of the two ends of the high-strength steel wire rope 2 from the aluminum buckles respectively, and finally pressing the aluminum buckles tightly by adopting hydraulic equipment to fasten the part of the high-strength steel wire rope 2 penetrating through the high-strength screw 51 and the corresponding part of the high-strength steel wire rope 2 together;
(8) After the step (7) is finished, respectively installing the free ends of the high-strength screw rods 5 in the step (7) on the corresponding first anchoring holes 311 and sleeving the gaskets, and then screwing in the matched high-strength nuts 52 to fix the high-strength screw rods 5 on the corresponding first vertical steel plates 32 and enable the high-strength steel wire ropes 2 to be in a tensioning state, namely applying prestress;
(9) In the step (7), each high-strength steel wire rope 2 penetrates through one second vertical steel plate 42, one high-strength steel sleeve 8 is sleeved on each high-strength steel wire rope 2, and after the high-strength steel wire rope 2 finishes the step (8), bar-planting glue is injected into each high-strength steel sleeve 8, so that each high-strength steel wire rope 2 is fixedly connected to each second T-shaped angle steel 4;
(10) Opening the steel bar planting glue in the step (9) after the strength of the steel bar planting glue meets the requirement; if the reinforcement fails due to environmental factors, the high-strength steel wire rope 2 can be disassembled (firstly releasing the prestress of the high-strength steel wire rope 2, namely firstly disassembling the aluminum buttons 7 at the two ends of the high-strength steel wire rope 2, then screwing out the high-strength nuts 52 on the high-strength screw rods 5, and finally cutting the steel wire rope), and then repeating the steps (6) - (10) to re-reinforce.
It should be noted that: the reinforcing device can be prefabricated in a factory and then assembled in site construction.
After the construction method is adopted, the prefabricated reinforcing device is prefabricated in a factory in advance, so that the prefabricated reinforcing device is high in precision and good in quality, can be directly assembled and used in the field construction process, and is high in field implementation efficiency and rapid in construction.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a bridge prestressing force high strength wire rope bending resistance reinforcing apparatus which characterized in that: the high-strength steel wire rope anchoring device comprises a high-strength steel wire rope and an anchoring device for anchoring the high-strength steel wire rope, wherein the anchoring device comprises a first T-shaped angle steel, a second T-shaped angle steel and a high-strength screw rod, the first T-shaped angle steel and the second T-shaped angle steel are integrally fixed, the high-strength screw rod is provided with a hole at the tail part, and the first T-shaped angle steel and the second T-shaped angle steel have the same structure;
the two first T-shaped angle steels are respectively and correspondingly arranged at two ends of the bottom surface of the bridge base body, a plurality of second T-shaped angle steels are respectively and equidistantly arranged on the bottom surface of the bridge base body and correspond to the space between the two first T-shaped angle steels, the free ends of the two high-strength screw rods are respectively and correspondingly arranged on the first T-shaped angle steels and are screwed on the first T-shaped angle steels through high-strength nuts, the high-strength steel wire ropes penetrate through the second T-shaped angle steels, the two ends of the high-strength steel wire ropes respectively and correspondingly penetrate through the tail parts of the high-strength screw rods, and the penetrating parts of the high-strength steel wire ropes and the corresponding high-strength steel wire ropes are fastened together through fastening pieces; wherein, the high-strength steel wire rope is fixedly provided with a high-strength steel sleeve corresponding to each second T-shaped angle steel respectively, and the high-strength steel wire rope is a steel wire rope with the diameter larger than 8 mm; the first T-shaped angle steel comprises a first horizontal steel plate and a first vertical steel plate which are mutually vertical, and the second T-shaped angle steel comprises a second horizontal steel plate and a second vertical steel plate which are mutually vertical; and high-strength steel sleeves are fixedly arranged at the positions of the high-strength steel wire ropes corresponding to the second T-shaped angle steels respectively, adhesives are filled in the high-strength steel sleeves, and one end of each high-strength steel sleeve is fixedly connected with the corresponding second vertical steel plate respectively so that each high-strength steel wire rope is fixedly connected to each second T-shaped angle steel again.
2. The bridge prestress high-strength steel wire rope bending-resistant reinforcing device according to claim 1, characterized in that: the first vertical steel plate and the second vertical steel plate are arranged in parallel.
3. The bridge prestress high-strength steel wire rope bending-resistant reinforcing device according to claim 2, characterized in that: the first horizontal steel plate and the second horizontal steel plate are respectively and correspondingly screwed on the bridge base body through high-strength bolts and high-strength nuts.
4. The bridge prestress high-strength steel wire rope bending-resistant reinforcing device according to claim 2, characterized in that: the first vertical steel plate is provided with a first anchoring hole for the free end of the high-strength screw rod to pass through, and the free end of the high-strength screw rod is screwed on the first vertical steel plate through a matched high-strength nut; and each second vertical steel plate is provided with a second anchoring hole for the high-strength steel wire rope to pass through.
5. The bridge prestress high-strength steel wire rope bending-resistant reinforcing device according to claim 1, characterized in that: the buckling piece is a square aluminum buckle.
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| CN110258776B (en) * | 2019-07-24 | 2024-05-14 | 陈菲 | Prestressed bridge and manufacturing method and application thereof |
| CN111101729B (en) * | 2019-12-31 | 2021-04-30 | 中国矿业大学 | Floor slab reinforcing method |
| CN113790760A (en) * | 2021-09-18 | 2021-12-14 | 科顿环境科学股份有限公司 | Supervision method for installation of super-large-span steel structure planar truss |
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| CN205955261U (en) * | 2016-06-07 | 2017-02-15 | 江西赣粤高速公路股份有限公司 | Prestressed wire rope curved scissors reinforcing concrete T roof beam |
| CN207079491U (en) * | 2017-04-07 | 2018-03-09 | 华侨大学 | A kind of anti-bend reinforced device of bridge prestress high-strength steel cord |
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| CN107165060A (en) | 2017-09-15 |
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