CN108678408B - A reinforced concrete beam prestressed steel wire rope reinforcement device - Google Patents

Abstract

The invention discloses a reinforced concrete beam prestressed steel wire rope reinforcement device, comprising a concrete beam, steel plate anchors are fixedly connected to both sides of the concrete beam, and the steel plate anchors are connected to the concrete beam through a first reinforcement mechanism, A tension end anchor plate is fixedly connected to the steel plate anchors, a connecting steel plate is arranged between the two steel plate anchors, the steel plate is connected to the concrete beam through a second reinforcement mechanism, and the connecting steel plate is fixedly connected to the concrete beam. A steel plate is fixed, and a plurality of anchoring mechanisms for stretching the two tension end anchor plates are connected between the two tension end anchor plates. In the present invention, by setting the tensioning of the prestressed steel wire rope on both sides of the concrete beam, the application of the prestressing force is realized, the stability of the concrete beam is improved, and at the same time, another whole steel wire rope can be tensioned and formed at one time, which is convenient for anchoring, and a large number of It saves the construction period of engineering materials, and the effect is good.

Description

A reinforced concrete beam prestressed steel wire rope reinforcement device

technical field

The invention relates to the technical field of reinforced concrete beam reinforcement, in particular to a reinforced concrete beam prestressed steel wire rope reinforcement device.

Background technique

Cold drawn steel wire for the production of steel reinforcement in the tension zone of prestressed concrete members. Generally, concrete has high strength against compressive force, but shows brittleness when subjected to tensile force and is prone to cracking. Prestressed concrete is to make the steel bars arranged in the tension zone of the component bear a tensile force in advance to generate pretension stress. The pre-tensile stress on the steel bar reacts to the pre-compression stress in the tensile area, which can offset or reduce the tensile stress acting on the concrete by the external load, thereby greatly improving the ability of the tensile area to resist the tensile force, thus reducing the size of the component and saving materials. And reduce the weight of the components. Due to these advantages, prestressed concrete components have been successfully used in many projects such as large bridges, roof trusses, crane beams, industrial and civil prefabricated floors, railway sleepers, electric pole pipe piles, large-diameter prefabricated pipes, and nuclear power stations. . The production of prestressed steel wire has developed rapidly with the widespread application of prestressed concrete members.

In the existing systems related to prestressed steel wire rope reinforcement, the steel wire rope anchor systems used are single tensioned and single anchored; in actual prestressed steel wire rope reinforcement projects, many steel wire ropes are often required in a single reinforcement area to Reinforcement, this single tensioning method requires the use of chemical bolts to fix the tensioning device at each corresponding tensioning position on the beam, so that each wire rope needs to be installed back and forth in this way. Root tensioning, and then single anchoring, requires a lot of engineering time, and requires the processing of complex tension reaction support, which costs a lot of construction costs.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a reinforced concrete beam prestressed steel wire rope reinforcement device in order to solve the shortcomings existing in the prior art.

In order to achieve the above object, the following technical solutions have been adopted in the present invention:

A reinforced concrete beam prestressed steel wire rope reinforcement device, comprising a concrete beam, both sides of the concrete beam are fixedly connected with steel plate anchors, the steel plate anchors are connected to the concrete beam through a first reinforcement mechanism, and the steel plate anchors A tension end anchor plate is fixedly connected to the upper part, a connecting steel plate is arranged between the two steel plate anchors, the connecting steel plate is connected to the concrete beam through the second reinforcement mechanism, and a fixed steel plate is fixedly connected to the connecting steel plate, and the two steel plate anchors are A plurality of anchoring mechanisms for stretching the two tension end anchor plates are connected between each of the tension end anchor plates, wherein a pressure ring is connected to the side wall of one of the tension end anchor plates, and the pressure ring A second prestressed steel wire rope is fixedly connected to one side of the cable, and the second prestressed steel wire rope is connected with the tension end anchor plate through a winding mechanism.

Preferably, the first reinforcement mechanism includes first installation holes in opposite positions on both ends of the bottom surface of the concrete beam and on both sides of the corresponding steel plate anchors, and the first installation holes in the opposite positions are installed with A first high-strength bolt, the upper end of the first high-strength bolt is threadedly connected with a first high-strength nut, and one end of the first high-strength nut is in contact with the top of the steel plate anchor.

Preferably, the second reinforcement mechanism includes two opposite ends of the bottom surface of the concrete beam and two sides of the corresponding connecting steel plate respectively provided with oppositely positioned second installation holes, and each of the oppositely positioned second installation holes is installed with a second installation hole. Two high-strength bolts, the upper end of the second high-strength bolt is screwed with a second high-strength nut, and one end of the second high-strength nut is in contact with the top of the connecting steel plate.

Preferably, the anchoring mechanism comprises a first high-strength screw rod disposed on one side of the tension end anchor plate, one end of the first high-strength screw rod penetrates the tension end anchor plate and is threadedly connected with a connection nut, and one end of the connection nut is locked One end of the anchor plate at the tensioning end, the end of the first high-strength screw rod away from the connecting nut is provided with a connection port, the fixed steel plate is provided with a movable port, and the movable port is provided with a first prestressed steel wire rope, so Both ends of the first prestressed steel wire rope pass through the movable port, and are connected to the first prestressed steel wire rope through a fastener after passing through the connection port, and a fixing mechanism is arranged between the two connection nuts in the vertical direction.

Preferably, the fixing mechanism includes a fixing block fixedly connected to the connecting nut, a fixing rod is arranged between the two fixing blocks, and the fixing rod is connected with the fixing block through a locking screw.

Preferably, the winding mechanism includes a plurality of anchors disposed at one end of the tension end anchor plate away from each other, the anchors are fixedly connected with the steel plate anchors, the anchors are sleeved with bearings, the second The prestressed steel wire ropes are sequentially wound on the anchor through the bearing, the tension end anchor plate is provided with a communication port corresponding to the second prestressed steel wire rope, and the fixed steel plate is fixedly connected with the second prestressed steel wire rope. Steel pipe, one end of the second prestressed steel wire rope away from the pressure ring is connected with one of the tension end anchor plates through a locking mechanism.

Preferably, the locking mechanism includes a connection block fixedly connected to one end of the second prestressed steel wire rope, and a second high-strength screw rod is fixedly connected to one end of the connection block away from the second prestressed steel wire rope, and the second high-strength screw rod penetrates through One of the tensioned end anchor plates is locked at the end by a third high-strength nut.

Preferably, the first prestressed steel wire rope and the second prestressed steel wire rope are 6*7+IWS prestressed steel wire ropes with a diameter greater than 8mm, and the outer sides of the first prestressed steel wire rope and the second prestressed steel wire rope are connected with galvanized steel wires. .

In the present invention, compared with the prior art, it has the following beneficial effects;

1. In the present invention, by setting the interaction between the first high-strength screw, the fastener, the second prestressed wire rope, the connecting nut and the steel pipe, by utilizing the high tensile strength of the second prestressed wire rope, the The parts can fix the second prestressed steel wire rope passing through the movable port, improve the stability of the second prestressed steel wire rope, and use the first screw and connecting nut to change the tension of the second prestressed steel wire rope and improve the strength of the reinforced concrete. Bearing capacity, stiffness, energy dissipation capacity, ductility and durability of bending members;

2. In the present invention, by setting the interaction among anchors, steel pipes, second prestressed wire ropes, connecting blocks, second high-strength screw rods, and third high-strength nuts, the second prestressed wire ropes are On the tension end anchor plate, through the second prestressed steel wire rope, the connecting port on the tension end anchor plate and the steel pipe on the fixed steel plate are successively wound, so that the whole second prestressed steel wire rope plays a multi-section prestressing role in one reinforcement area. The stress steel wire rope can be anchored at one time and stretched and formed at one time, which simplifies the anchoring device, saves a lot of engineering materials and engineering construction period, and has good social and economic benefits.

3. In the present invention, the fixing rod can be installed between the two connecting nuts to stabilize the two connecting nuts, avoid the loosening of the two connecting nuts, and control the tension of the first prestressed wire rope , so that the stability of the concrete beam is higher, and the fixing rod can be disassembled and installed with the locking screw.

Description of drawings

Fig. 1 is the structural representation of a kind of reinforced concrete beam prestressed steel wire rope reinforcement device proposed in the present invention;

2 is a schematic side view of the structure of the anchor part of the prestressed steel wire rope reinforcement device for a reinforced concrete beam proposed in the present invention;

Fig. 3 is a side structural schematic diagram of the steel plate anchor part structure of a reinforced concrete beam prestressed steel wire rope reinforcement device proposed in the present invention.

In the picture: 1 concrete beam, 2 steel plate anchors, 3 connecting steel plates, 4 tension end anchor plates, 5 connecting nuts, 6 first high-strength screws, 7 fixing blocks, 8 fixing rods, 9 locking screws, 10 third high-strength screws Nuts, 11 anchors, 12 pressure rings, 13 second prestressed wire ropes, 14 second high-strength screws, 15 first high-strength nuts, 16 first high-strength bolts, 17 fasteners, 18 fixed steel plates, 19 steel pipes, 20 second High-strength nuts, 21 connecting blocks, 22 second high-strength bolts, 23 first prestressed wire ropes, 24 bearings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the implementations. example.

1-3, a reinforced concrete beam prestressed steel wire rope reinforcement device, in the present invention, includes a concrete beam 1, both sides of the concrete beam 1 are fixedly connected with steel plate anchors 2, two steel plate anchors 2 are provided, and The two steel plate anchors 2 have the same structure. The steel plate anchors 2 are connected to the concrete beam 1 through the first reinforcement mechanism. Since a whole steel plate anchor 2 is provided, the contact area between the steel plate anchors 2 and the concrete beam 1 is at this time. The steel plate anchor 2 is fixed on the concrete beam 1 more stably. The steel plate anchor 2 is connected with the concrete beam 1 through the first reinforcement mechanism. The steel plate anchor 2 is fixedly connected with the tension end anchor plate 4. The first reinforcement The mechanism includes two opposite ends of the bottom surface of the concrete beam 1 and two sides of the corresponding steel plate anchors 2 respectively provided with first installation holes in opposite positions, and first high-strength bolts 16 are installed in the first installation holes in opposite positions. The first high-strength bolts 16 are connected to the first mounting holes by the method of planting reinforcement commonly used in the construction field, and then the steel plate anchors 2 are screwed to the bottom surface of the concrete beam 1 through the provided first high-strength nuts 15, so that the steel plate anchors 2 and the concrete beam 1 are more closely attached, the upper end of the first high-strength bolt 16 is screwed with a first high-strength nut 15, and one end of the first high-strength nut 15 is in contact with the top of the steel plate anchor 2.

In the present invention, a connecting steel plate 3 is provided between the two steel plate anchors 2. The connecting steel plate 3 is connected to the concrete beam 1 through a second reinforcement mechanism. The connection steel plate 3 is fixedly connected with a fixed steel plate 18. The second reinforcement mechanism includes a concrete beam. Two opposite ends of the bottom surface of 1 and the two sides of the corresponding connecting steel plate 3 are respectively provided with opposite second installation holes, and second high-strength bolts 22 are installed in the opposite second installation holes, which are commonly used in the construction field. The second high-strength bolt 22 is connected with the second installation hole by the method of planting reinforcement, and then the connecting steel plate 3 is screwed to the bottom surface of the concrete beam 1 through the second high-strength nut 20, so that the connection between the steel plate 3 and the concrete beam 1 is made. The fit is tighter and the stability of the connecting steel plate 3 is improved. The upper end of the second high-strength bolt 22 is threadedly connected with a second high-strength nut 20 , and one end of the second high-strength nut 20 is in contact with the top of the connecting steel plate 3 .

In the present invention, a plurality of anchoring mechanisms for stretching the two tensioning end anchor plates 4 are connected between the two tensioning end anchor plates 4 . High-strength screw 6, one end of the first high-strength screw 6 penetrates the tensioning end anchor plate 4 and is threadedly connected with a connecting nut 5, and one end of the connecting nut 5 is locked with one end of the tensioning end anchor plate 4, and the first high-strength screw 6 is far away from One end of the connection nut 5 is provided with a connection port, the fixed steel plate 18 is provided with a movable port, and a first prestressed steel wire rope 23 is arranged in the movable port, and both ends of the first prestressed steel wire rope 23 pass through the movable port and pass through the connection port Afterwards, it is connected with the first prestressed wire rope 23 through the fastener 17, the fastener 17 is an aluminum buckle, the first prestressed wire rope 23 passes through the part of the movable port, and the aluminum buckle is compressed by the existing common hydraulic equipment, The portion of the first prestressing wire rope 23 passing through the movable port is fastened together with the first prestressing wire rope 23 .

In the present invention, a fixing mechanism is provided between the two connecting nuts 5 in the vertical direction. The fixing mechanism includes a fixing block 7 that is fixedly connected to the connecting nut 5, and a fixing rod 8 is arranged between the two fixing blocks 7. The fixing rod 8 is connected with the fixing block 7 through the locking screw 9, and the fixing rod 8 can be installed between the two connecting nuts 5 to stabilize the two connecting nuts 5 and avoid the loosening of the two connecting nuts 5. Control The tension of the first prestressed steel wire rope 23 increases the stability of the concrete beam, improves the stability of the concrete beam, and the fixing rod 8 can be disassembled and installed with the locking screw 9 .

In the present invention, a pressure ring 12 is connected to the side wall of one of the tension end anchor plates 4, and a second prestressed steel wire rope 13 is fixedly connected to one side of the pressure ring 12. The second prestressed steel wire rope 13 is connected to the tensioner through a winding mechanism The end anchor plates 4 are connected, and the winding mechanism includes a plurality of anchors 11 arranged at one end of the tension end anchor plate 4 away from each other. The anchors 11 are fixedly connected with the steel plate anchors 2, and the anchors 11 are sleeved with bearings 24. The two prestressed steel wire ropes 13 are sequentially wound on the anchor 11 through the bearing 24. The tension end anchor plate 4 is provided with a communication port corresponding to the second prestressed steel wire rope 13, and the fixed steel plate 18 is fixedly connected with the second prestressed steel wire rope 18. For the steel pipe 19 corresponding to the steel wire rope 13, the setting of the winding mechanism can reduce the traditional construction process. The prestressed steel wire rope anchor system used is a single tension and single anchorage; in the actual prestressed steel wire rope reinforcement project, a single reinforcement is used. In the area, many prestressed steel wire ropes are often needed for reinforcement. This single tensioning method requires high-strength bolts to fix the tensioning device at each corresponding tensioning position on the beam, so that each prestressed steel wire rope is reinforced. It needs to be installed back and forth in this way, using a tensioning device, tensioning a single root, and then anchoring a single root, which requires a lot of engineering time, and requires the processing of complex tensioning reaction supports, which cost a lot of construction costs, and also increases the construction cost. The cost of the whole prestressed steel wire rope can be anchored at one time, and the multi-section prestressed steel wire rope can be reinforced in one reinforcement area by setting the winding mechanism, which simplifies the anchoring device and saves a lot of engineering materials and engineering construction period. Has good social and economic benefits.

In the present invention, one end of the second prestressed wire rope 13 away from the pressure ring 12 is connected to one of the tension end anchor plates 4 through a locking mechanism, and the locking mechanism includes a connection block 21 fixedly connected to one end of the second prestressed wire rope 13, One end of the connecting block 21 away from the second prestressed steel wire rope 13 is fixedly connected with a second high-strength screw rod 14 , the second high-strength screw rod 14 penetrates one of the tension end anchor plates 4 and is locked at the end by the third high-strength nut 10 . The locking mechanism can fasten the second prestressed wire rope 13 to increase the tension of the second prestressed wire rope 13 during winding.

In the present invention, the first prestressed wire rope 23 and the second prestressed wire rope 13 are 6*7+IWS prestressed wire ropes with a diameter greater than 8 mm, and the outer sides of the first prestressed wire rope 23 and the second prestressed wire rope 13 are both connected Galvanized.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The technical solutions and their inventive concepts in the present invention are equivalently replaced or changed, and all should be included within the protection scope of the present invention.

Claims (1)

1. A reinforced concrete beam prestressed steel wire rope reinforcement device, comprising a concrete beam (1), characterized in that both sides of the concrete beam (1) are fixedly connected with steel plate anchors (2), the steel plate anchors (2) Connected to the concrete beam (1) through the first reinforcement mechanism, the steel plate anchors (2) are fixedly connected with the tension end anchor plates (4), and the two steel plate anchors (2) are arranged between them. There is a connecting steel plate (3), the connecting steel plate (3) is connected with the concrete beam (1) through a second reinforcement mechanism, and a fixed steel plate (18) is fixedly connected to the connecting steel plate (3), and the two tensioning A plurality of anchoring mechanisms for stretching the two tension end anchor plates (4) are connected between the end anchor plates (4), wherein a pressure ring ( 12), a second prestressed steel wire rope (13) is fixedly connected to one side of the pressure ring (12), and the second prestressed steel wire rope (13) is connected to the tension end anchor plate (4) through a winding mechanism; The first reinforcement mechanism comprises that two opposite ends of the bottom surface of the concrete beam (1) and the two sides of the corresponding steel plate anchors (2) are respectively provided with oppositely positioned first installation holes, and the oppositely positioned first installation holes are inside A first high-strength bolt (16) is installed on each, and a first high-strength nut (15) is threadedly connected to the upper end of the first high-strength bolt (16), and one end of the first high-strength nut (15) is connected to the steel plate anchor (2) top touch; The second reinforcement mechanism comprises that two opposite ends of the bottom surface of the concrete beam (1) and the two sides of the corresponding connecting steel plate (3) are respectively provided with oppositely positioned second installation holes, and the oppositely positioned second installation holes are provided with each other. A second high-strength bolt (22) is installed, the upper end of the second high-strength bolt (22) is threadedly connected with a second high-strength nut (20), and one end of the second high-strength nut (20) is in contact with the top of the connecting steel plate (3). touch; The anchoring mechanism comprises a first high-strength screw (6) arranged on one side of the tension-end anchor plate (4), one end of the first high-strength screw (6) penetrates the tension-end anchor plate (4) and is threadedly connected with a connecting nut (5), one end of the connecting nut (5) is locked at one end of the tension end anchor plate (4), and one end of the first high-strength screw (6) away from the connecting nut (5) is provided with a connecting port, The fixed steel plate (18) is provided with a movable port, and a first prestressed steel wire rope (23) is arranged in the movable port, and both ends of the first prestressed steel wire rope (23) pass through the movable port and pass through the movable port. After the connection port is connected with the first prestressed steel wire rope (23) through the fastener (17), a fixing mechanism is provided between the two connection nuts (5) in the vertical direction; The fixing mechanism includes a fixing block (7) fixedly connected to the connecting nut (5), a fixing rod (8) is arranged between the two fixing blocks (7), and the fixing rod (8) is locked by locking The screw (9) is connected with the fixing block (7); The winding mechanism comprises a plurality of anchors (11) arranged at one end of the tension end anchor plate (4) away from each other, the anchors (11) are fixedly connected with the steel plate anchors (2), and the anchors ( 11) The upper sleeve is provided with a bearing (24), the second prestressed steel wire rope (13) is sequentially wound on the anchor (11) through the bearing (24), and the tension end anchor plate (4) is provided with A communication port corresponding to the second prestressed steel wire rope (13), a steel pipe (19) corresponding to the second prestressed steel wire rope (13) is fixedly connected to the fixed steel plate (18), and the second prestressed steel wire rope (13) ) one end away from the pressure ring (12) is connected with one of the tension end anchor plates (4) through a locking mechanism; The locking mechanism includes a connecting block (21) fixedly connected to one end of the second prestressed steel wire rope (13), and one end of the connecting block (21) away from the second prestressed steel wire rope (13) is fixedly connected with a second high-strength steel wire rope (13). a screw (14), the second high-strength screw (14) penetrates one of the tension end anchor plates (4) and is locked at the end by a third high-strength nut (10); The first prestressed wire rope (23) and the second prestressed wire rope (13) are 6*7+IWS prestressed wire ropes with a diameter greater than 8 mm, and the first prestressed wire rope (23) and the second prestressed wire rope ( 13) The outer sides are all galvanized.

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