CN107165059B - Construction method of a bridge prestressed high-strength steel wire rope anti-bending reinforcement device - Google Patents

Abstract

The invention discloses a construction method of a prestressed high-strength steel wire rope anti-bending reinforcement device for a bridge. The reinforcement device includes a steel wire rope and an anchoring device for anchoring the wire rope. screw rod, two first T-shaped angle steels are respectively installed on the two ends of the bottom surface of the bridge substrate, several second T-shaped steel angle steels are installed at equal intervals between the two first T-shaped steel angle steels corresponding to the bottom surface of the bridge substrate, and the two screw rods The free ends are correspondingly installed on the first T-shaped angle steel, and are screw-locked on the first T-shaped angle steel through the provided nuts, and the steel wire rope is passed through each second T-shaped angle steel, and the two ends pass through the tail of the screw respectively. , and the passing part is fastened together with the corresponding steel wire rope through an aluminum buckle. Compared with the prior art, the stretching of the high-strength steel wire rope, that is, the application of prestress, can effectively avoid the interface peeling damage of the reinforcement layer; the construction method of the present invention is convenient in construction and high in implementation efficiency.

Description

Construction method of a bridge prestressed high-strength steel wire rope anti-bending reinforcement device

technical field

The invention relates to the technical field of bridge reinforcement, in particular to a construction method of a bridge prestressed high-strength steel wire rope anti-bending reinforcement device.

Background technique

As an important part of the lifeline project, the bridge is the "throat" of the transportation hub. The destruction of the bridge will lead to the interruption of the lifeline, and the loss is immeasurable. Bridges often need to be reinforced due to factors such as aging in outdoor environments, increased design standards, and damage caused by traffic accidents.

At present, there are many strengthening methods for bridge structures in our country. Commonly used methods include enlarging the cross-sectional area method, outsourcing steel method, pasting steel plate method, pasting fiber method, prestressed reinforcement method, etc. These traditional strengthening methods have the following problems; (1) The steel-glued method and the steel-clad method are heavy in weight, complex in construction, and poor in corrosion resistance; (2) The method of pasting carbon fiber does not improve the stiffness significantly, and is not suitable for low-strength concrete, and the interface of the reinforcement layer is prone to occur Peeling damage; (3) The traditional bridge reinforcement technology requires a large amount of reinforcement engineering, high labor costs, high maintenance costs in the later stage, and the construction has a great impact on the environment, so it cannot achieve green construction.

At the same time, although the steel strand mesh reinforcement technology widely used in the field of building structure reinforcement has the advantages of small weight, fire prevention, environmental protection, good durability, easy construction and superior reinforcement performance, the current steel strand mesh reinforcement technology has been extended to The following problems still exist in the field of bridge reinforcement: (1) This reinforcement technology is prone to peeling damage, which seriously affects the strength of the steel strands, and is not suitable for the field of bridge reinforcement with various load conditions and complex engineering environments; (2) For building structures In the field of reinforcement, the diameters of the selected steel strands are all small, but the diameter of the steel strands cannot be adapted to the field of bridge reinforcement with a large amount of reinforcement engineering and high reinforcement requirements.

In view of this, the inventor of this case conducted in-depth research on the above-mentioned problem, and then this case was produced.

Contents of the invention

The object of the present invention is to provide a construction method of a bridge prestressed high-strength steel wire rope anti-bending reinforcement device, which is convenient in construction and high in implementation efficiency.

To achieve the above object, the solution of the present invention is:

A construction method for a prestressed high-strength steel wire rope anti-bending reinforcement device for a bridge, the reinforcement device includes a high-strength steel wire rope and an anchoring device for anchoring the high-strength steel wire rope, the anchoring device includes a first T-shaped angle steel fixed integrally, a The second T-shaped angle steel and the high-strength screw rod with holes at the tail, 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 installed on the bottom surface of the bridge matrix. Several of the second T-shaped angle steels are respectively equidistantly installed on the bottom surface of the bridge base corresponding to the two first T-shaped angle steels, and the free ends of the two high-strength screw rods are respectively installed on the corresponding on the first T-shaped angle steel, and screw-locked on the first T-shaped angle steel by the high-strength nut provided, the high-strength steel wire rope is passed through each of the second T-shaped angle steels, and the two ends are respectively passed through The tail part of the high-strength screw, and the passing part is fastened together with the corresponding high-strength steel wire rope through a buckle;

The first T-shaped angle steel includes a first horizontal steel plate and a first vertical steel plate that are perpendicular to each other, and the second T-shaped angle steel includes a second horizontal steel plate and a second vertical steel plate that are perpendicular to each other, and the first vertical The steel plates are arranged parallel to the second vertical steel plates; the high-strength steel wire ropes are respectively fixed with high-strength steel casings corresponding to the second vertical steel plates;

The first vertical steel plate is provided with a first anchor hole for the free end of the high-strength screw to pass through, and each of the second vertical steel plates is provided with a second anchor hole for the high-strength steel wire rope to pass through; The first horizontal steel plate and the second horizontal steel plate are respectively screw-locked to the bridge base through high-strength bolts and high-strength nuts, and several bridge installation holes are opened on the bottom surface of the bridge base. The first horizontal steel plate and the second horizontal steel plate are respectively provided with a first mounting hole and a second mounting hole opposite to the corresponding bridge mounting hole;

The construction method of the reinforcement device is as follows:

(1) According to the actual construction situation, determine the number of high-strength steel wire ropes, the second T-shaped angle steel and high-strength screw rods, and the number of high-strength bolts, and at the same time, determine the installation of the first T-shaped angle steel and the second T-shaped angle steel along the clear span of the bridge base The installation position, the position where the high-strength screw is fixedly installed on the first anchor hole on the first T-shaped angle steel and the position where the high-strength steel wire rope passes through the second anchor hole on the second vertical steel plate;

(2), according to the quantity determined by the first T-shaped angle steel and the second T-shaped angle steel in the step (1), prepare the same angle steel of size, and each angle steel is spliced in pairs respectively to form the first T-shaped angle steel and the second T-shaped angle steel, The first T-shaped angle steel includes a first horizontal steel plate and a first vertical steel plate, and the second T-shaped angle steel includes a second horizontal steel plate and a second vertical steel plate;

(3), each first horizontal steel plate and the second horizontal steel plate in the step (2) are respectively drilled with the first installation hole and the second installation hole, and each first vertical steel plate and the second vertical The first anchor hole and the second anchor hole are respectively drilled on the steel plate;

(4), the bottom surface of the bridge substrate is carried out roughening processing, after the roughening treatment is finished, the installation position of the first T-shaped angle steel determined in the step (1) and the second T-shaped angle steel are respectively drilled and set up bridge installation holes, and The bridge installation holes on each installation position correspond to the corresponding first installation hole and the second installation hole respectively. The diameter of the bridge installation holes is 2mm larger than the diameter of the high-strength bolt in step (1), and the hole depth is 6 times the diameter of the hole. times, and the hole diameter is greater than 100mm;

(5), clean up all the bridge installation holes in steps (3) and (4), the first and second anchor holes, and the first and second installation holes, install each high-strength bolt in step (1) to the In the corresponding bridge installation hole, when the strength reaches the requirement, install the first horizontal steel plate in step (2) together with the corresponding high-strength bolt through the first installation hole, and screw in the equipped high-strength nut so that the first T The profiled angle steels are fixed at both ends of the clear span of the bottom surface of the bridge matrix; at the same time, the second horizontal steel plate in step (2) is installed together with the corresponding high-strength bolts through the second mounting holes, and screwed into the equipped high-strength bolts respectively. Nuts are used to fix the second T-shaped angle steel on the clear span of the bottom surface of the bridge substrate;

(6), the high-strength steel wire rope in the step (1) is cut according to the clear span length of the bridge substrate;

(7), pass the high-strength steel wire rope in the step (6) through the second anchor holes on all the second vertical steel plates in the step (3) on the bridge substrate, and carry out the two ends of the high-strength steel wire rope according to the requirements of prestressing tensioning, and the two ends respectively pass through the tail of the high-strength screw in step (1), and the part passed through is fixed together with the part corresponding to the high-strength steel wire rope through a fastener, and the fastener is compressed with a hydraulic device;

(8), after step (7) is completed, the free ends of each high-strength screw rod in step (7) are respectively installed in the first anchor hole on the first vertical steel plate in step (3), and screwed into the matching The high-strength nuts are provided, and the high-strength steel wire ropes are in a tensioned state;

(9), in step (7), every time the high-strength steel wire rope passes through a second vertical steel plate, the high-strength steel wire rope is inserted into a high-strength steel casing, and when the high-strength steel wire rope is anchored after step (8), inject Adhesive, the high-strength steel wire rope is consolidated on each second T-shaped angle steel;

(10), after the adhesive strength in step (9) reaches the requirement, it can be opened;

(11) If the reinforcement fails, first remove the high-strength steel wire rope, and then repeat the above steps (6)-(10) for re-reinforcement.

The fastening piece in step (7) is a square aluminum buckle.

In step (2), the first horizontal steel plate and the second horizontal steel plate are formed by connecting corresponding surfaces of two angle steels side by side, and the first vertical steel plate and the second vertical steel plate are formed by two The corresponding faces of the block angle steel are superimposed.

The adhesive in step (9) is rebar glue or epoxy glue.

After adopting the above structure, the present invention has the following beneficial effects:

1. This reinforcement device can be assembled and used directly during the on-site construction process, and the on-site implementation efficiency is high and the construction is fast.

2. Since the high-strength steel wire rope is stretched and the two ends are anchored to the bottom surface of the bridge base, the high-strength steel wire rope is used as the reinforcement material. Compared with the existing technology, it can effectively avoid the interface peeling damage of the reinforcement layer of the traditional reinforcement device. Ensure the reinforcement effect, ensure the integrity of the structure, bear the fatigue load of the bridge, and can effectively improve the bending fatigue performance of the bridge, and its structure is simple, easy to implement, and strong in practicability;

3. Since the reinforcement device is installed on the bottom surface of the bridge base, it is an external reinforcement device for the bridge, so there is no need to close the traffic during the construction period;

4. The high-strength steel wire rope is stretched on the corresponding position of the bridge base through the cooperation of high-strength bolts and high-strength nuts, high-strength screws and high-strength nuts. Therefore, it can be seen that this reinforcement device can be disassembled and installed repeatedly, and the cost of each reinforcement material is low. The overall construction cost lower;

5. By fixing the high-strength steel casings to each second T-shaped angle steel respectively, so that the high-strength steel wire rope is consolidated on each second T-shaped angle steel, so as to improve the bearing capacity of the bridge.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is an enlarged schematic view of A in FIG. 1 .

FIG. 3 is an enlarged schematic diagram of B in FIG. 1 .

in the figure;

1-Bridge base 2-High-strength steel wire rope

3-The first T-angle steel 31-The first horizontal steel plate

32-the first vertical steel plate 321-the first anchor hole

4-The second T-angle steel 41-The second horizontal steel plate

42-the second vertical steel plate 421-the second anchor hole

5-high-strength screw 51-installation hole

52-High-strength nut 61-High-strength bolt

62-high-strength nut 7-aluminum buckle

8-High-strength steel casing

Detailed ways

In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

The present invention is a prestressed high-strength steel wire rope anti-bending reinforcement device for bridges, as shown in Figures 1-3, comprising a high-strength steel wire rope 2 and an anchoring device for anchoring the high-strength steel wire rope 2, and the high-strength steel wire rope 2 is installed on the bridge base body along the length direction of the bridge base body 1 1, the anchoring device includes a first T-shaped angle steel 3 fixed integrally, a second T-shaped angle steel 4 fixed integrally and a high-strength screw 5, wherein the tail end of the high-strength screw 5 is provided with a mounting hole 51, the first The T-shaped angle steel 3 and the second T-shaped angle steel 4 are formed by fixed connection of two angle steels respectively, and the first T-shaped angle steel 3 and the second T-shaped angle steel 4 have the same structure.

Specifically, as shown in Figure 1-2, two first T-shaped angle steels 3 are respectively installed on the two ends of the clear span of the bottom surface of the bridge base 1, and several second T-shaped angle steels 4 are installed on the bridge base 1 at equal intervals. Between the clear spans of the bottom surface, the first T-shaped angle steel 3 includes the first horizontal steel plate 31 and the first vertical steel plate 32 perpendicular to each other, and the second T-shaped angle steel 4 includes the second horizontal steel plate 41 and the second vertical steel plate 41 perpendicular to each other. The steel plate 42, the first horizontal steel plate 31 and the second horizontal steel plate 41 are formed by connecting corresponding surfaces of two angle steels side by side, and the first vertical steel plate 32 and the second vertical steel plate 42 are all superimposed by corresponding surfaces of two angle steels Formed; the first horizontal steel plate 31 and the second horizontal steel plate 41 are in contact with the bottom surface of the bridge base 1, and the first vertical steel plate 32 and the second vertical steel plate 42 are vertically arranged with the length direction of the bottom surface of the bridge base 1 respectively. In the present invention, the quantity of the second T-shaped angle steel 4 is arranged according to the length of the actual bridge base 1 and actual construction conditions, and there is no limitation here.

Preferably, the high-strength steel wire rope is a 6*7+IWS steel wire rope with a diameter greater than 8 mm. In this embodiment, the high-strength steel wire rope is a galvanized high-strength steel wire rope.

Further, the two ends of the bottom surface of the bridge base 1 and the two sides of the corresponding first horizontal steel plate 31 are respectively provided with first mounting holes opposite to each other, and the two ends of the bottom surface of the bridge base 1 are connected with the corresponding second horizontal steel plate 31. The two sides of the steel plate 41 are provided with opposite second installation holes respectively, and high-strength bolts 61 are respectively installed in the opposite first installation holes and second installation holes. Each high-strength bolt 61 is respectively connected with the corresponding first installation hole and the second installation hole, that is, each high-strength bolt 61 is bonded to the bridge substrate; then the first horizontal steel plate 31 and the The second horizontal steel plate 41 is screw-locked on the bottom surface of the bridge base 1 , that is, the first T-shaped angle steel 3 and the second T-shaped angle steel 4 are fixedly installed on the bottom surface of the bridge base 1 . Preferably, in order to achieve that all the first T-shaped angle steels 3 and the second T-shaped angle steels 4 are closely fixed on the bottom surface of the bridge base 1, each first horizontal steel plate 31 is provided with four first installations with equal intervals. Each second horizontal steel plate 41 is provided with four second installation holes with equal spacing. Preferably, the diameter of the high-strength bolt 61 is five times the depth of the first installation hole or the second installation hole, and its diameter is not less than 150mm.

Further, first anchor holes 321 are respectively opened on the two first vertical steel plates 32, second anchor holes 421 are respectively opened on each second vertical steel plates 42, and each first anchor hole 321 and the second anchor hole 421 is on the same straight line along the length direction of the bottom surface of the bridge base 1, and the above-mentioned high-strength screw rods 5 are respectively installed on the two first anchor holes 321, and the free ends of the two high-strength screw rods 5 are screwed to the corresponding high-strength screw rods 5 through the high-strength nuts 52 respectively. On the first vertical steel plate 32, the tail ends of the two high-strength screw rods 5 are arranged facing each other. Preferably, a washer 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-strength screw 5 is 10 times the diameter of the high-strength screw 5, and its length is not less than 120 mm.

In addition, as shown in Figure 2, the treatment of the two ends of the high-strength steel wire rope 2 is as follows: the high-strength steel wire rope 2 passes through the second anchor holes 421 in turn, and then the two ends of the high-strength steel wire rope 2 respectively pass through the installation holes 51 of the corresponding high-strength screw rod 5, and The passing part and the corresponding high-strength steel wire rope 2 are fastened together by a buckle, and the remaining passing part is not shorter than 50mm. In this embodiment, the fastener is an aluminum buckle 7, the part of the high-strength steel wire rope 2 passing through the installation hole 51 and the corresponding part of the high-strength steel wire rope pass through the aluminum buckle 7, and the aluminum buckle 7 is pressed by the existing common hydraulic equipment. tight, so that the part where the high-strength steel wire rope 2 passes through the installation hole 51 is fastened together with the corresponding part of the high-strength steel wire rope 2 . Preferably, in order to prevent the high-strength steel wire rope 2 from being pulled out from the aluminum buckle 7, the two ends of the high-strength steel wire rope 2 are respectively exposed a little from the corresponding aluminum buckle 7 package, and the anchoring length of the two ends of the high-strength steel wire rope 2 is 2 times the diameter of the high-strength steel wire rope 2 5 times.

In the present invention, the number of high-strength steel wire ropes 2 is selected according to the width of the bridge base 1 in actual construction, so as to reasonably distribute the prestress applied to the bridge base 1 .

When the bottom surface of the bridge base 1 is distributed with several high-strength steel wire ropes 2 along its cross-sectional direction, taking three as an example, two first vertical steel plates 32 are set at equal intervals along the cross-sectional direction of the bottom surface of the bridge base 1. Three first anchor holes 321, and the first anchor holes 321 on the two first vertical steel plates 32 are opened opposite to each other, and each second vertical steel plate 42 corresponds to the cross-sectional direction along the bottom surface of the bridge base 1. Each first anchor hole 321 is respectively provided with a second anchor hole 421 , so that each first anchor hole 321 and the corresponding second anchor hole 421 are respectively on three straight lines along the length direction of the bottom surface of the bridge base 1 . At the same time, the above-mentioned high-strength screw rods are respectively installed on the first anchor holes 321 in the aforementioned manner.

Further, whenever the high-strength steel wire rope 2 passes through a second anchor hole 421, a high-strength steel sleeve 8 will be inserted, and when the two ends of the high-strength steel wire rope 2 are stretched and fixed on the corresponding first T-shaped angle steel 3 Each high-strength steel casing 8 is filled with adhesive, so that one end of each high-strength steel casing 8 is respectively fixed in contact with the corresponding second vertical steel plate 42, so that the high-strength steel wire rope 2 is consolidated on each second vertical steel plate 42 again. Two T-shaped angle steels are placed on 4 to improve the bearing capacity of the bridge. Wherein, the bonding agent adopts planting glue or epoxy glue. Preferably, the inner diameter of the high-strength steel casing 8 is 2mm more than the diameter of the high-strength steel wire rope 2, and the wall thickness of the high-strength steel casing 8 is greater than 5mm, and its length is 10 times the diameter of the high-strength steel wire rope 2, and greater than 100mm.

Compared with the prior art, the tension of the high-strength steel wire rope 2, that is, the application of prestress, can effectively avoid the interface peeling damage of the reinforcement layer, and from the installation method of the reinforcement device, it can be seen that this reinforcement device can adapt to bridge reinforcement. There are large engineering quantities, large spans, high reinforcement requirements and fatigue loads, and the structure is simple, and the construction is convenient and fast. It is suitable for bending fatigue reinforcement of bridges, beams and slabs with insufficient bearing capacity, and bridges with damage.

The present invention also proposes the construction method of the bridge prestressed high-strength steel wire rope anti-bending reinforcement device according to the foregoing embodiments:

(1), according to the actual construction situation, determine the quantity of high-strength steel wire rope 2, the second T-shaped angle steel 4 and high-strength screw rod 5, and the quantity of high-strength bolts, and determine the first T-shaped angle steel 3 and the second T-shaped angle steel 4 along the bridge The installation position where the substrate 1 is installed at equal intervals, the position where the high-strength screw rod 5 is fixedly installed in the first anchor hole 321 of the first T-shaped angle steel 3, and the high-strength steel wire rope 2 passes through the second anchor holes on the second vertical steel plates 42 421 location;

(2), according to the quantity determined in the first T-shaped angle steel 3 and the second T-shaped angle steel 4 in step (1), prepare angle steels with the same size, each angle steel is spliced in pairs to form the first T-shaped angle steel 3 and the second T Shaped angle steel 4, the first T-shaped angle steel 3 includes a first horizontal steel plate 31 and a first vertical steel plate 32, and the second T-shaped angle steel 4 includes a second horizontal steel plate 41 and a second vertical steel plate 42;

(3), on every first horizontal steel plate 31, the second horizontal steel plate 42, be respectively drilled with the first mounting hole, the second mounting hole of four equal spacings, in every first vertical steel plate 32, the second A first anchor hole 321 and a second anchor hole 421 are respectively drilled on the vertical steel plate 42;

(4), the bottom surface of bridge matrix 1 is carried out roughening processing, after roughening treatment is finished, according to the installation position of the first T-shaped angle steel 3 and the second T-shaped angle steel 4 determined in step (1) along the clear span of bridge matrix Bridge mounting holes are respectively drilled, and the bridge mounting holes on each mounting position are respectively corresponding to the first mounting holes and the second mounting holes on the corresponding first horizontal steel plate 31 and the second horizontal steel plate 41, and the above-mentioned bridge mounting holes The aperture of the hole is 2mm larger than the diameter of the high-strength screw rod 5 prepared in the step (1), and the depth of the hole is 6 times of the aperture, and the aperture is greater than 100mm;

(5), clean up all the bridge mounting holes in steps (3) and (4), the first and second anchor holes, and the first and second mounting holes, and place each high-strength bolt 61 prepared in step (1) Fix them in the corresponding bridge installation holes by planting bars; when the strength meets the requirements, install the first horizontal steel plate 31 in step (4) with the corresponding high-strength bolts 61 through the drilled first installation holes , and screw in the high-strength nut 62 provided, so that the first T-shaped angle steel 3 is fixed on the two ends of the clear span of the bottom surface of the bridge substrate 1; at the same time, pass the second horizontal steel plate 41 in step (4) through each of the drilled The second installation hole is installed together with the corresponding high-strength bolt 61, and screwed into the high-strength nut 62 provided, so that the second T-shaped angle steel 4 is fixed on the clear span of the bottom surface of the bridge base 1;

(6), the high-strength steel wire rope 2 in step (1) is cut according to the clear span length of the bridge matrix, and the construction allowance when the high-strength steel wire rope 2 is tightened and prestressed, and when the two ends of the high-strength steel wire rope 2 are anchored should be considered during cutting. remaining length;

(7), the high-strength steel wire rope 2 in the step (6) is run through the second anchor hole 421 on each second vertical steel plate 42 in the step (3), and according to the requirement of prestress, the two ends of the high-strength steel wire rope are tensioned pull, and the two ends pass through the corresponding aluminum buckle 7 respectively, then pass through the afterbody of the high-strength screw rod 51 in the step (1), and then pass through the aluminum buckle that has been passed once before. Parts are exposed a little from the aluminum buckle, and finally the aluminum buckle is pressed tightly by hydraulic equipment, so that the part of the high-strength steel wire rope 2 passing through the high-strength screw rod 51 is fastened together with the corresponding part of the high-strength steel wire rope 2;

(8), after step (7) is completed, install the free ends of the high-strength screw rods 5 in step (7) respectively on the corresponding first anchor holes 311 and insert gaskets, and then screw in the high-strength nuts provided 52, so that the high-strength screw rod 5 is fixed on the corresponding first vertical steel plate 32, and the high-strength steel wire rope 2 is in a tensioned state, that is, prestressing is applied;

(9), in step (7), every time the high-strength steel wire rope 2 passes through a second vertical steel plate 42, a high-strength steel sleeve 8 is placed on the high-strength steel wire rope 2, after the high-strength steel wire rope 2 completes step (8), in Reinforcement glue is injected into each high-strength steel casing 8, and the high-strength steel wire rope 2 is consolidated on each second T-shaped angle steel 4;

(10), after the strength of the planting glue in step (9) meets the requirements, it can be opened; if the reinforcement fails due to environmental factors, the high-strength steel wire rope 2 can be disassembled (release the prestress of the high-strength steel wire rope 2 first, that is, first remove the high-strength steel wire rope 2 aluminum buckles 7 at both ends, then unscrew the high-strength nut 52 on the high-strength screw rod 5, and finally cut the wire rope), then repeat steps (6)-(10) to re-reinforce.

It should be noted that the reinforcement devices mentioned above can be prefabricated in the factory first, and then assembled during on-site construction.

After adopting the above construction method, because the reinforcement device is prefabricated in the factory in advance, the prefabricated reinforcement device has high precision and good quality, and it can be directly assembled and used during the on-site construction process, and the on-site implementation efficiency is high. Construction fast.

The above description is only a preferred embodiment of this embodiment, and all equivalent changes and modifications made in accordance with the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims (4)

1. A construction method of 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 fixed into a whole, the high-strength screw rod is provided with a hole in 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, 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;

the first T-shaped angle steel comprises a first horizontal steel plate and a first vertical steel plate which are perpendicular to each other, the second T-shaped angle steel comprises a second horizontal steel plate and a second vertical steel plate which are perpendicular to each other, and the first vertical steel plate and the second vertical steel plate are arranged in parallel; high-strength steel sleeves are fixedly arranged at the positions, corresponding to the second vertical steel plates, of the high-strength steel wire ropes respectively, an adhesive is filled in each high-strength steel sleeve, and one end of each high-strength steel sleeve is fixedly connected with the corresponding second vertical steel plate;

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 each second vertical steel plate is provided with a second anchoring hole for the high-strength steel wire rope to pass through; 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, a plurality of bridge mounting holes are formed in the bottom surface of the bridge base body, and a first mounting hole and a second mounting hole which are opposite to the corresponding bridge mounting holes are formed in the first horizontal steel plate and the second horizontal steel plate respectively;

the construction method of the reinforcing device is characterized by comprising the following steps:

(1) Determining the number of high-strength steel wire ropes, second T-shaped angle steels and high-strength screws and the number of high-strength bolts according to actual construction conditions, and simultaneously determining the mounting positions of the first T-shaped angle steels and the second T-shaped angle steels along the net span of the bridge base body, wherein the high-strength screws are fixedly mounted at the positions of first anchoring holes in the first T-shaped angle steels and the positions of the high-strength steel wire ropes penetrating through second anchoring holes in the second vertical steel plates;

(2) Preparing angle steels with the same size according to the determined quantity of the first T-shaped angle steels and the second T-shaped angle steels in the step (1), wherein every two angle steels are spliced to form the first T-shaped angle steels and the second T-shaped angle steels respectively, the first T-shaped angle steels comprise first horizontal steel plates and first vertical steel plates, and the second T-shaped angle steels comprise second horizontal steel plates and second vertical steel plates;

(3) Respectively drilling a first mounting hole and a second mounting hole on each first horizontal steel plate and each second horizontal steel plate in the step (2), and respectively drilling a first anchoring hole and a second anchoring hole on each first vertical steel plate and each second vertical steel plate;

(4) Performing chiseling treatment on the bottom surface of the bridge base body, respectively drilling bridge mounting holes according to the mounting positions of the first T-shaped angle steel and the second T-shaped angle steel determined in the step (1) after the chiseling treatment is finished, wherein the bridge mounting hole in each mounting position corresponds to the corresponding first mounting hole and second mounting hole, the hole diameter of each bridge mounting hole is 2mm larger than that of the high-strength bolt 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 bridge mounting holes, the first anchoring holes, the second anchoring holes and the first mounting holes and the second mounting holes in the steps (3) and (4), respectively mounting each high-strength bolt in the step (1) into the corresponding bridge mounting hole, mounting the first horizontal steel plate in the step (2) together with the corresponding high-strength bolt through the first mounting hole when the strength meets the requirement, and screwing in the high-strength nut, so that the first T-shaped angle steel is fixed at two ends of the bottom clear span of the bridge base body; meanwhile, the second horizontal steel plate in the step (2) is installed together with the corresponding high-strength bolt through each second installation hole, and the second horizontal steel plate is screwed into the high-strength nuts respectively, so that the second T-shaped angle steel is fixed on the bottom clear span of the bridge base body;

(6) Cutting the high-strength steel wire rope in the step (1) according to the net span length of the bridge substrate;

(7) Penetrating the high-strength steel wire rope in the step (6) through second anchoring holes in all second vertical steel plates in the step (3) on a bridge base body, tensioning two ends of the high-strength steel wire rope according to the requirement of prestress, respectively penetrating the tail parts of the high-strength screw rods in the step (1), fixing the penetrating parts and the parts corresponding to the high-strength steel wire rope together through buckling pieces, and pressing the buckling pieces through hydraulic equipment;

(8) After the step (7) is finished, respectively installing the free ends of the high-strength screws in the step (7) in first anchoring holes in the first vertical steel plate in the step (3), screwing in the matched high-strength nuts, and enabling the high-strength steel wire rope to be in a tensioning state;

(9) In the step (7), each high-strength steel wire rope penetrates through one second vertical steel plate, the high-strength steel wire rope is sleeved into the high-strength steel sleeve, and after the high-strength steel wire rope is anchored in the step (8), adhesives are injected into each high-strength sleeve, so that the high-strength steel wire rope is fixedly connected to each second T-shaped angle steel;

(10) Opening the adhesive after the strength of the adhesive in the step (9) meets the requirement;

(11) And if the reinforcement fails, firstly disassembling the high-strength steel wire rope, and then repeating the steps (6) - (10) for re-reinforcement.

2. The construction method of the bridge prestress high-strength steel wire rope bending-resistant reinforcing device according to claim 1, characterized in that: the buckling piece in the step (7) is a square aluminum buckle.

3. The construction method of the bridge prestress high-strength steel wire rope bending-resistant reinforcing device according to claim 1, characterized in that: in the step (2), the first horizontal steel plate and the second horizontal steel plate are formed by joining corresponding surfaces of two angle steels in parallel, and the first vertical steel plate and the second vertical steel plate are formed by overlapping corresponding surfaces of two angle steels.

4. The construction method of the bridge prestress high-strength steel wire rope bending-resistant reinforcing device according to claim 1, characterized in that: the adhesive in the step (9) is bar planting adhesive or epoxy adhesive.

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