CN220598203U - External prestress steel steering device - Google Patents
External prestress steel steering device Download PDFInfo
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- CN220598203U CN220598203U CN202322149968.8U CN202322149968U CN220598203U CN 220598203 U CN220598203 U CN 220598203U CN 202322149968 U CN202322149968 U CN 202322149968U CN 220598203 U CN220598203 U CN 220598203U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 288
- 239000010959 steel Substances 0.000 title claims abstract description 288
- 239000003292 glue Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000000338 in vitro Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 8
- 238000005553 drilling Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910000746 Structural steel Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000007788 roughening Methods 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to an external prestress steel steering device which comprises a side steel plate, a bottom steel plate and a plurality of steel rib plates, wherein all the steel rib plates are arranged at intervals along the length direction of the side steel plate, each steel rib plate comprises a bottom part, a side part and a corner part, the corner part is connected with the bottom part and the side part, the bottom part is connected with the bottom side of the bottom steel plate, the side part is connected with the outer side of the side steel plate, the corner part is penetrated and fixedly connected with a steering steel pipe, and the steering steel pipe is used for penetrating an external prestress steel beam. The steel rib plate with the bottom, the side parts and the corner parts is adopted, the bottom of the steel rib plate is connected with the bottom steel plate, the side parts of the steel rib plate are connected with the side steel plates, the steering steel pipe and the external prestress steel bundles can be arranged outside the side surfaces and below the bottom, even when the steel rib plate is applied to a bridge with a short part of beams, the vertical distance between the positions of the steel bundles in the cross section of the span and the fulcrum is increased, the bending angle of the steel bundles near the fulcrum can be increased, the reinforcing efficiency is improved, and the setting effect of the external prestress steel bundles is better.
Description
Technical Field
The utility model relates to the technical field of external prestress, in particular to an external prestress steel steering device.
Background
The external prestress reinforcement is one of the most common measures in bridge reinforcement engineering, so that the bearing capacity can be improved, and the stress of a bridge structure can be improved; in the external prestress reinforcement engineering, the dosage of the external prestress steel beam is usually determined by adopting an envelope design method, and the method takes the original design of a bridge as the upper limit of the design and the current situation of the bridge as the lower limit of the design, so that the method is widely accepted.
The external prestress steel bundles are generally arranged according to a stress mode of a bridge structure, namely, the midspan section steel bundles are as close to a bottom plate as possible, the section steel bundles of fulcra at two ends are as close to a top plate as possible, the section steel bundles near the fulcra are bent and arranged, the external prestress steel bundles are required to be arranged on the side face of a beam body, for midspan, the external prestress steel bundles are generally required to be turned by adopting an external prestress turning device, for example, the Chinese patent publication No. CN106120576A discloses an external prestress reinforcing structure of an assembled T-shaped beam, the turning device comprises a bottom plate (side face), the bottom plate is provided with bolt holes at the upper side, a plurality of fixed steel plates at intervals are welded at the lower side, and the turning steel pipes pass through the fixed steel plates and are welded with the fixed steel plates; the prestress steel strand passes through the steering steel pipe to realize bending; the lower side of the bottom plate can be connected with a connecting steel plate (bottom surface) arranged at the bottom of the beam into a whole, the steering device cannot arrange the prestress steel strand below the bottom of the beam, the high bridge of the beam can be met, and the bridge is limited by the beam height of part of the bridge, the external prestress is adopted to reinforce the bridge, so that the vertical positions of the steel strand at the cross section of the span and the fulcrum are often too close, the bending angle of the steel strand near the fulcrum is too small, the reinforcing efficiency is low, and the advantages of the steel strand are difficult to develop.
Disclosure of Invention
The utility model aims at: the external prestress steel steering device is provided for solving the problems that when the external prestress steering device in the prior art is applied to a bridge with a part of beams being shorter, the vertical positions of steel bundles with cross-section of a span and a fulcrum are too close, the bending angle of the steel bundles near the fulcrum is too small, the reinforcement efficiency is low, and the external prestress effect is poor.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides an external prestressing force steel steering device, includes side steel sheet, end steel sheet and a plurality of steel rib plate, all the steel rib plate is followed side steel sheet length direction interval sets up, the steel rib plate includes bottom, lateral part and corner portion, corner portion connects bottom and lateral part, the bottom connect in the bottom side of end steel sheet, the lateral part connect in the outside of side steel sheet, corner portion wears to establish and fixedly connected with turns to the steel pipe, turn to the steel pipe and be used for wearing to establish external prestressing force steel bundle.
This scheme external prestressing force steel steering device, the side steel sheet is connected in the side downside of the roof beam body, the bottom steel sheet is connected in the bottom surface avris of the roof beam body, adopt the steel rib plate that has bottom, lateral part and corner portion, make the bottom and the bottom steel sheet of steel rib plate be connected, and then make the corner portion that can be with the steel rib plate stabilize outside the side of the roof beam body and below the bottom, and make can set up the steering steel pipe in corner portion, can set up steering steel pipe and external prestressing force steel beam outside the side and below the bottom, even when being applied to the bridge of partial roof beam height, it has also increased the vertical distance of midspan and fulcrum cross-section steel beam position, and then can increase the nearby steel beam bending angle of fulcrum, improve reinforcement efficiency, and external prestressing force steel beam's setting effect is better. Of course, the device can be used for the bridge with shorter part of the beam and the bridge with higher beam, and can achieve the purpose of increasing the vertical distance between the cross section steel beam and the cross section steel beam of the support point and increasing the bending angle of the steel beam near the support point.
Preferably, the lateral part wears to establish and fixedly connected with turns to the steel pipe, and the external prestressing steel bundles of different bridges setting up are different, when setting up the external prestressing steel bundles of more quantity, can set up the steel pipe that turns to at the lateral part of steel rib plate for wear to establish external prestressing steel bundles.
Preferably, the lateral part is vertical, the bottom transverse bridge sets up to, is convenient for arrange, and the bearing capacity of steel rib plate is better.
Preferably, the distance between adjacent steel rib plates is 15cm-20cm, so that the bearing effect is stable.
Preferably, the steel rib plate is of an integrated structure, so that the structural integrity is strong and the steel rib plate is more stable.
Preferably, the bottom is welded in the bottom steel plate, the lateral part is welded in the side steel plate, and after the welding, the structural integrity of side steel plate, bottom steel plate and a plurality of steel rib plates is strong, and is more stable, and the construction of being convenient for.
Preferably, the inner side of the corner part is provided with a welding hole, so that the welding quality of the side steel plate, the bottom steel plate and the plurality of steel rib plates is better.
Preferably, the side steel plate is connected to the side surface of the beam body through a first high-strength bolt, and the bottom steel plate is connected to the bottom surface of the beam body through a second high-strength bolt, so that the stability of connection can be ensured.
Preferably, a steel adhesive is arranged between the side steel plates and the side faces of the beam body, and a steel adhesive is arranged between the bottom steel plates and the bottom face of the beam body.
In design, the connection strength can be generally met through the high-strength bolt. Through set up the viscose steel glue between the side steel sheet with between the side of the roof beam body and the bottom steel sheet with between the bottom surface of the roof beam body, can increase and connect the reserve power, the structure is safer. And the bonding steel glue can form sealing between the opposite side steel plate and the side face of the beam body and between the bottom steel plate and the bottom face of the beam body, so that the bottom steel plate and the side steel plate are prevented from being rusted, the structural durability is better, and the structure is safer.
Preferably, the side edge of the side steel plate is provided with edge sealing glue with the side face of the beam body, the side edge of the bottom steel plate is provided with edge sealing glue with the bottom face of the beam body, the edge sealing glue is used for sealing the edge, and then the steel bonding glue is poured, so that the construction is simpler, the tightness after the construction is better, and the higher connecting force can be reserved.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. according to the external prestress steel steering device, the steel rib plate with the bottom, the side parts and the corner parts is adopted, so that the bottom of the steel rib plate is connected with the bottom steel plate, the side parts of the steel rib plate are connected with the side steel plates, the corner parts of the steel rib plate can be further firmly arranged outside the side surfaces and below the bottom of the beam body, the steering steel tube and the external prestress steel beam can be arranged outside the side surfaces and below the bottom, the vertical distance between the positions of the steel beam in the cross section of the mid-span and the fulcrum is increased, the bending angle of the steel beam near the fulcrum is increased, the reinforcing efficiency is improved, and the arrangement effect of the external prestress steel beam is better.
2. The external prestress steel steering device is manufactured and processed in a factory, and has high precision and guaranteed quality; the external prestress steel beam can be arranged below the beam bottom, so that the reinforcement efficiency is high; the high-strength bolt holes are drilled on site, so that the original structural steel bars or steel strands can be effectively avoided; the installation is convenient and quick, the personnel investment is less, and the economic benefit is considerable.
Drawings
FIG. 1 is a schematic front view of an in vitro pre-stressed steel steering device of the present utility model;
FIG. 2 is a schematic side view of an in vitro pre-stressed steel steering device of the present utility model;
FIG. 3 is a schematic top view of an in vitro pre-stressed steel steering device of the present utility model;
FIG. 4 is a schematic front view of a steel rib;
FIG. 5 is a second schematic elevational view of a steel rib plate;
FIG. 6 is a schematic diagram III of a steel rib plate in elevation;
FIG. 7 is a schematic structural view of a side steel plate;
fig. 8 is a schematic structural view of a bottom steel plate.
Icon: 1-side steel plates; 11-a first bolt hole; 2-bottom steel plate; 21-a second bolt hole; 3-steel rib plates; 31-side; 32-corner portions; 33-bottom; 34-passing through the welding holes; 35-lead angle; 36-mounting holes; 4-turning a steel pipe; 51-a first high strength bolt; 52-a second high strength bolt; 6-bonding steel glue; 7-external prestress steel bundles; 8-beam body.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
When the bridge with shorter part of the beam is used, the ideal external prestress reinforcement effect is achieved by raising the steel beam with the fulcrum section as much as possible or lowering the steel beam with the cross-section as much as possible. This embodiment provides an external prestressing force steel steering device, see fig. 1-3, including side steel sheet 1, end steel sheet 2 and a plurality of steel rib plate 3, side steel sheet 1 is used for connecting in the side downside of the roof beam body 8, and end steel sheet 2 is used for connecting in the bottom surface avris of the roof beam body 8, all steel rib plate 3 follows side steel sheet 1 length direction interval sets up, side steel sheet 1 length direction is along the bridge direction, steel rib plate 3 includes bottom 33, lateral part 31 and corner portion 32, corner portion 32 connects bottom 33 and lateral part 31, connects bottom 33 and lateral part 31 into whole, bottom 33 connect in the bottom side of end steel sheet 2, lateral part 31 connect in the outside of side steel sheet 1 for can be with the corner portion of steel rib plate 3 firm outside the side of the roof beam body and below, make the steel pipe 32 wear to establish and fixedly connected with steering steel pipe 4, as shown in fig. 4-5, steering steel pipe 4 is used for wearing to establish external prestressing force steel beam 7, can be used for setting up external prestressing force beam 7 and side bending force beam 7 and the outside the bridge, and the outside the bending force can be increased by the outside the side of the side bending force is than the steel beam 7, and the outside the vertical bending force is close to the pivot point is located in the side bending force is increased, and the outside the steel beam is close to the outside the vertical bending force is increased, and the vertical bending force is increased, the effect is increased, and the vertical bending force is increased. Of course, the device can be used for the bridge with shorter part of the beam and the bridge with higher beam, and can achieve the purpose of increasing the vertical distance between the cross section steel beam and the cross section steel beam of the support point and increasing the bending angle of the steel beam near the support point.
In this embodiment, as shown in fig. 1, the side portion 31 is vertically disposed, the bottom portion 33 is laterally disposed to form a vertical L-like shape, and compared with the inclined L-like shape formed by the inclined arrangement of the side portion and the bottom portion, the arrangement is more convenient, and the bearing capacity of the steel rib plate 3 is better.
As shown in fig. 2, the distance between the adjacent steel rib plates 3 is suitably 15cm-20cm, so that the bearing effect is stable, and the construction complexity and waste caused by too dense arrangement are avoided.
In this embodiment, as shown in fig. 4, the bottom 33, the side 31 and the corner 32 of the steel rib plate 3 may be connected together to form an integral structure, and as a preferred embodiment, as shown in fig. 5-6, the steel rib plate 3 is an integral structure, so that the structural integrity is strong and more stable. Besides, the bottom 33 of the corner 32 is welded to the bottom steel plate 2, the side 31 of the corner 32 is welded to the side steel plate 1, and after welding, the structural integrity of the side steel plate 1, the bottom steel plate 2 and the plurality of steel ribs 3 is strong, so that the steel rib plate is more stable, can be used as an integral hoisting, and is convenient for construction. As shown in fig. 4-6, the outer corner of the steel rib plate 3 is provided with an inclined lead angle 35, the lead angle 35 is formed by subtracting the corner, and the sheared part of the lead angle 35 is easy to hurt people and does not contribute to stress.
As shown in fig. 1 and 4, the inner side of the corner 32 is provided with a through welding hole 34, i.e. an annular welding seam can be formed between the side 31 of the corner 32 and the side steel plate 1, so that the welding quality of the side steel plate 1, the bottom steel plate 2 and the plurality of steel ribs 3 is better.
In this embodiment, as shown in fig. 1 to 3, the side steel plate 1 is connected to the side surface of the beam body 8 through a first high-strength bolt 51, and the bottom steel plate 2 is connected to the bottom surface of the beam body 8 through a second high-strength bolt 52, so that the stability of connection can be ensured. Specifically, as shown in fig. 7, the side steel plate 1 has two rows of first bolt holes 11 up and down, each row of first bolt holes 11 is arranged along the forward bridge direction at intervals, each first bolt hole 11 is connected to the side surface of the beam body 8 through a first high-strength bolt 51, the whole steel rib plate 3 is supported through the shearing capacity of the first high-strength bolt 51, meanwhile, as shown in fig. 8, the bottom steel plate 2 is provided with a row of second bolt holes 21, each row of second bolt holes 21 is arranged along the forward bridge direction at intervals, the second bolt holes 21 are arranged near the transverse middle part of the beam body, each second bolt hole 21 is penetrated with a second high-strength bolt 2, and the whole steel rib plate 3 is pulled upwards through the tensile force of the second high-strength bolt 2.
In terms of design, the strength of the connection between the side steel plates 1 and the side surfaces of the beam body 8 and between the bottom steel plates 2 and the bottom surface of the beam body 8 can be generally satisfied by high-strength bolts. In this embodiment, as shown in fig. 1 to 3, on the premise of high-strength bolting, the steel adhesive 6 is further disposed between the side steel plate 1 and the side surface of the beam body 8 and between the bottom steel plate 2 and the bottom surface of the beam body 8, so that the connection reserve force can be increased, and the structure is safer. And the bonding glue 6 can form sealing between the opposite side steel plate 1 and the side face of the beam body 8 and between the bottom steel plate 2 and the bottom face of the beam body 8, so that the bottom steel plate 2 and the side steel plate 1 are prevented from being rusted, the structural durability is better, and the safety is improved. Besides, the side edge of the side steel plate 1 and the side surface of the beam body 8 can be provided with edge sealing glue, the side edge of the bottom steel plate 2 and the bottom surface of the beam body 8 are provided with edge sealing glue, the edge sealing glue is used for sealing the edge, and the steel bonding glue 6 is poured, so that the construction is simpler, the tightness after the construction is better, and the higher connecting force can be reserved.
The number of the external prestress steel bundles 7 is different from one bridge to another, and when the number of the external prestress steel bundles 7 is larger, the steering steel pipes 4 can be arranged at the side parts 31 of the steel rib plates 3 for penetrating the external prestress steel bundles 7, as shown in fig. 4 and 5. In fig. 6, the steering steel pipe 4 is provided only at the corner 32 of the steel rib 3.
In this embodiment, the steel steering device is formed by welding the side steel plates 1, the bottom steel plate 2 and the steel rib plates 3, wherein the steel steering device is formed by drilling mounting holes 36 of the steering steel pipes 4 on the steel rib plates 3 according to the size requirement outside the field, and the steering steel pipes 4 are mounted on the steel rib plates 3 and transported to a construction site as shown in fig. 4-5. The method comprises the steps of pre-stressing the mounting position of a steel steering device outside a lofting body, roughening the concrete surface of the mounting position of the steel steering device, detecting the positions of original structural steel bars or steel strands, marking, and drilling bolt holes of high-strength bolts on a side steel plate 1 and a bottom steel plate 2 on site; drilling holes in the original structure, planting high-strength bolts, installing a steel steering device, and tightening high-strength nuts; edge sealing glue is smeared around the side steel plate 1 and the bottom steel plate 2, and steel bonding glue is poured on the joint surfaces of the original structures of the side steel plate 1, the bottom steel plate 2 and the beam body 8; and (5) penetrating and stretching the external prestress steel bundles 7. The steel steering device can be used for arranging the external prestress steel bundles below the beam bottom and far away from the neutral axis of the main beam, and the vertical distance between the span middle section steel bundles and the fulcrum section steel bundles and the bending angle of the steel bundles near the fulcrum are increased, so that an ideal reinforcing effect is achieved.
The specific operation steps are as follows:
the first step: machining a side steel plate 1, a bottom steel plate 2 and a steel rib plate 3 in a factory, and drilling mounting holes 36 in the steel rib plate 3;
and a second step of: welding the side steel plates 1, the bottom steel plates 2 and the steel rib plates 3 into a whole, installing a steering steel pipe 4, and then transporting the steel steering device to the site;
and a third step of: the method comprises the steps of setting out the installation position of a steel steering device on site, roughening the surface of an original structure, detecting the position of an original structure steel bar or steel strand and marking;
fourth step: determining the mounting position of a high-strength bolt according to the positions of original structural steel bars or steel strands, and drilling high-strength bolt holes on the side steel plates 1 and the bottom steel plates 2;
fifth step: drilling holes on the original structure of the beam body 8, planting high-strength bolts, installing a steel steering device, and screwing high-strength nuts;
sixth step: coating edge sealing glue on the periphery of the side steel plate 1 and the bottom steel plate 2, and then pouring the steel bonding glue between the side steel plate 1, the bottom steel plate 2 and the concrete gap;
seventh step: and (5) penetrating and stretching the external prestress steel bundles 7.
The external prestress steel steering device is manufactured and processed in a factory, and is high in precision and guaranteed in quality; the external prestress steel beam can be arranged below the beam bottom, so that the reinforcement efficiency is high; the high-strength bolt holes are drilled on site, so that the original structural steel bars or steel strands can be effectively avoided; the installation is convenient and quick, the personnel investment is less, and the economic benefit is considerable.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides an external prestressing force steel steering device, includes side steel sheet (1), end steel sheet (2) and a plurality of steel rib plate (3), all steel rib plate (3) are followed side steel sheet (1) length direction interval sets up, a serial communication port, steel rib plate (3) include bottom (33), lateral part (31) and corner portion (32), corner portion (32) are connected bottom (33) and lateral part (31), bottom (33) connect in the bottom side of end steel sheet (2), lateral part (31) connect in the outside of side steel sheet (1), corner portion (32) wear to establish and fixedly connected with turns to steel pipe (4), turn to steel pipe (4) and be used for wearing to establish external prestressing force steel bundle (7).
2. The external pre-stressed steel steering device according to claim 1, wherein the lateral part (31) is pierced and fixedly connected with a steering steel tube (4).
3. The external pre-stressed steel steering device according to claim 1, wherein the side portions (31) are arranged vertically and the bottom portion (33) is arranged transversely.
4. An in vitro pre-stressed steel steering device according to claim 3, wherein the distance between adjacent steel ribs (3) is 15cm-20cm.
5. The external pre-stressing steel steering device according to claim 1, characterized in that the steel rib plate (3) is of unitary construction.
6. The in vitro pre-stressed steel steering device according to claim 5, wherein said bottom part (33) is welded to the bottom steel plate (2) and said side part (31) is welded to the side steel plate (1).
7. The external pre-stressed steel steering device according to claim 6, wherein the corner portion (32) is provided with a through-welded hole (34) inside.
8. The external pre-stressed steel steering device according to any one of claims 1-7, wherein the side steel plates (1) are connected to the side surfaces of the beam body (8) by first high-strength bolts (51), and the bottom steel plates (2) are connected to the bottom surfaces of the beam body (8) by second high-strength bolts (52).
9. The external pre-stress steel steering device according to claim 8, characterized in that a steel adhesive (6) is arranged between the side steel plate (1) and the side surface of the beam body (8), and a steel adhesive (6) is arranged between the bottom steel plate (2) and the bottom surface of the beam body (8).
10. The external pre-stress steel steering device according to claim 9, wherein edge sealing glue is arranged between part of the side edges of the side steel plates (1) and the side surfaces of the beam body (8), and edge sealing glue is arranged between part of the side edges of the bottom steel plates (2) and the bottom surface of the beam body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322149968.8U CN220598203U (en) | 2023-08-10 | 2023-08-10 | External prestress steel steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322149968.8U CN220598203U (en) | 2023-08-10 | 2023-08-10 | External prestress steel steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220598203U true CN220598203U (en) | 2024-03-15 |
Family
ID=90174791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322149968.8U Active CN220598203U (en) | 2023-08-10 | 2023-08-10 | External prestress steel steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220598203U (en) |
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2023
- 2023-08-10 CN CN202322149968.8U patent/CN220598203U/en active Active
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