CN220394560U - Tool type combined inner support for prestressed fish web girder - Google Patents
Tool type combined inner support for prestressed fish web girder Download PDFInfo
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- CN220394560U CN220394560U CN202321897067.0U CN202321897067U CN220394560U CN 220394560 U CN220394560 U CN 220394560U CN 202321897067 U CN202321897067 U CN 202321897067U CN 220394560 U CN220394560 U CN 220394560U
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- support
- inhaul cable
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 19
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 5
- 238000000034 method Methods 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 3
- 210000001015 abdomen Anatomy 0.000 description 13
- 238000010276 construction Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The application discloses a prestressing force fish web beam instrument formula combination internal support, it includes the waist rail and installs the supporting part on the waist rail, and the supporting part is including installing the support frame on the waist rail and being located the back timber that the support frame deviates from the waist rail one side, installs the cable frame that has the gyro wheel in the back timber one side that deviates from the support frame; two ends of the waist beam are respectively provided with an anchor frame, one end of the inhaul cable is fixed on one anchor frame, and the other end of the inhaul cable sequentially passes through each inhaul cable frame and is pressed on the idler wheels and then fixed on the other anchor frame; the top beam and the support frame are provided with a force-retaining box and a jack, the jack is used for pushing the top beam towards the direction deviating from the support frame, so that the inhaul cable generates prestress, and after the inhaul cable is tensioned, the top beam is supported on the support frame through the force-retaining box. According to the traction cable tensioning device, in the tensioning process of the traction cable, due to the rotation of the idler wheels, the traction cable is prevented from bending due to friction force, and the stability of traction cable prestress is guaranteed.
Description
Technical Field
The utility model relates to a tool type combined internal support for a prestressed fish web girder.
Background
The utility model provides a support is a large-scale support inside the foundation ditch in prestressing force fish web roof beam instrument formula combination, it is just called fish web roof beam again, the cable of fish web roof beam needs to carry out prestressing force's stretch-draw, in order to produce the prestressing force that resists the outside soil pressure of foundation ditch, when exerting prestressing force, in order to avoid making the support frame produce crooked in stretching process, influence the stability of fish web roof beam, utilize the jack of installing on the support frame to stretch-draw the cable, can reduce stretching process effectively, the deformation degree of support frame, but because the cable is the direct support on the support frame, in stretching process to the cable, still can make the support frame produce a certain amount of crooked because frictional force, in the foundation ditch work process that follows, the crooked of support frame can resume gradually, thereby influence the stability of cable prestressing force, lead to the reduction of fish web roof beam structural stability, influence the construction safety of foundation ditch.
Therefore, the friction force between the inhaul cable and the support is required to be continuously reduced, so that the structural stability of the fish web beam is improved, and the construction safety of the foundation pit is improved to the maximum extent.
Disclosure of Invention
In order to achieve the above-mentioned goal, the utility model has proposed the tool type to make up the internal support in a kind of prestressed fish belly beam, it includes a belly beam and at least three supporting parts mounted on this belly beam, this at least three supporting parts extend towards the same direction, and all perpendicular to belly beam, each supporting part includes a support frame and a roof beam, this support frame is fixedly mounted on belly beam, the roof beam is located one side that the support frame deviates from the belly beam, there are cable brackets fixedly mounted on one side that the roof beam deviates from the support frame, each cable bracket has free gyro wheels of rotation; two ends of the waist beam in the length direction are respectively fixedly provided with an anchor frame, all the supporting parts are positioned between the two anchor frames, one end of a guy cable is fixed on one anchor frame, the other end of the guy cable sequentially passes through each guy cable frame along the length direction of the waist beam and then is fixed on the other anchor frame, and the guy cable is propped against the idler wheels;
at least two conservation boxes and at least one jack are arranged between each top beam and the support frame, the jack is used for pushing the top beams towards the direction deviating from the support frame so as to stretch the inhaul cable, prestress is generated on the inhaul cable, and after stretching of the inhaul cable is completed, the two ends of each conservation box are respectively fixed on the top beams and the support frame, so that the top beams are supported on the support frame through the conservation boxes.
When the prestressed fish belly sill tool type combined internal support is installed, firstly, the waist beam and the supporting part are installed, then the top beam with the inhaul cable frames is arranged on a pre-arranged supporting platform, the top beam can move freely, then the inhaul cable sequentially passes through the inhaul cable frames and is supported on the idler wheels, two ends of the inhaul cable are respectively fixed on an anchoring frame, the jack is arranged between the top beam and the supporting frame, the jack is utilized to enlarge the distance between the top beam and the supporting frame, the inhaul cable is tensioned, prestress is generated, after the tensioning of the inhaul cable is completed, the force-retaining box is inserted between the top beam and the supporting frame, the top beam is supported on the supporting frame through the force-retaining box, and the installation of the combined internal support is completed.
In this application, utilize the jack to make the distance between back timber and the support frame increase, carry out the stretch-draw in-process to the cable, because the rotation of gyro wheel has avoided the cable to make the support frame produce the bending because of frictional force to avoided because the unstable problem of the structure that the bending resilience of support frame produced, guaranteed the stability of cable prestressing force.
Further, in order to improve the utilization ratio of the jack, the jack is detachably arranged between the top beam and the supporting frame, and the jack is detached after tensioning of the inhaul cable is completed. When the jack is in the work of finishing the internal support of the tool type combination of the prestressed fish-web girder, the jack can be disassembled and used for the next work or other operations of the internal support of the tool type combination of the prestressed fish-web girder, so that the utilization rate of the jack is improved, and the preparation amount of the jack is reduced.
Further, in order to improve the stability of the roller, the cable frame comprises a U-shaped support, and the roller is rotatably arranged on the U-shaped support through a rotating shaft. The U-shaped support is utilized to enable the two ends of the rotating shaft of the roller to be stably supported, so that the roller is ensured to be stably supported, and stable support is provided for the inhaul cable.
Further, in order to avoid the cable from deviating from the U type support in the work progress, influence the efficiency of construction, this U type support includes the bottom plate and two risers of parallel mount on the bottom plate, and the pivot supports on two risers, and the gyro wheel is located between two risers, all is provided with the locking hole on the one end that each riser kept away from the bottom plate, and the restriction bolt passes the locking hole on two risers of same U type support in proper order, with the cable restriction in U type support. Utilize the restriction bolt to restrict the cable in U type support, when setting up the cable on each supporting part, can be before tensioning the cable for the cable all can keep in U type support steadily, avoids because the cable breaks away from the repeated operation that the U type support caused, improves the efficiency of construction.
Further, in order to enable each inhaul cable to be stably supported and avoid deformation caused by mutual extrusion of the inhaul cables, corresponding to each inhaul cable, each roller is provided with a supporting groove with an arc-shaped section.
Specifically, each anchor frame comprises a limiting plate and a fastening plate, wherein the fastening plate is positioned on one side of the limiting plate, which is away from the supporting part, a limiting hole is formed in the limiting plate, a clamping piece type anchorage device is arranged between the limiting plate and the fastening plate, one end of a tensioning screw rod is connected to the clamping piece type anchorage device, the other end of the tensioning screw rod extends towards the direction deviating from the limiting plate and freely penetrates through the fastening plate, a tensioning nut is screwed on the clamping piece type anchorage device after the end part of a inhaul cable penetrates through the limiting hole. When the inhaul cable is erected, the tensioning nut is screwed at first, so that the inhaul cable is supported on the idler wheels to avoid sliding, and then the jack is started to tension the inhaul cable.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
Fig. 2 is an enlarged view of the cable holder.
Fig. 3 is a view in the direction A-A in fig. 2.
Fig. 4 is a schematic structural view of the anchor frame.
Detailed Description
Referring to fig. 1-4, a prestressed fish belly sill tool type combined inner support comprises a belly sill 11 and four supporting parts 200 mounted on the belly sill, wherein the belly sill is made of H-shaped steel, the four supporting parts 200 are arranged at intervals along the length direction of the belly sill 11, the four supporting parts extend towards the same direction and are perpendicular to the belly sill 11, and the height of two supporting parts positioned in the middle is higher than that of two supporting parts positioned at two sides, so that a guy cable 100 is approximately arc-shaped after being tensioned.
Each supporting portion 200 includes a supporting frame 20 and a top beam 25, the supporting frame 20 is fixedly mounted on the waist rail 11, in this embodiment, each supporting frame 20 includes two supporting columns 21 perpendicular to the waist rail 11, the supporting columns are welded on the waist rail, a connecting beam 23 is welded on one end of each supporting column far away from the waist rail 11, two diagonal braces 22 are welded on one side of each supporting column far away from the other supporting column, and the other ends of the diagonal braces 22 are welded on the waist rail. The top beam, the support column, the connecting beam and the diagonal bracing are all made of H steel.
The back timber 25 is located the support frame 20 and deviates from the one side of back timber 20, and the one side that deviates from support frame 20 at back timber 25 all fixed mounting has two cable frame 30, and two cable frames 30 are located the both ends of support frame 20 along the length direction of back timber, and two cable frames all adopt bolt detachably to install in the one side that the back timber 25 deviates from support frame 20.
In this embodiment, each cable frame 30 includes a U-shaped support 39, the U-shaped support 39 includes a bottom plate 31 and two vertical plates 32 mounted on the bottom plate, the two vertical plates 32 are disposed at intervals and parallel to each other, a shaft hole 321 is formed on each vertical plate, a rotating shaft 33 is freely inserted into the two shaft holes 321, an enlarged head 331 with an outer diameter larger than the inner diameter of the shaft hole is formed at one end of the rotating shaft, a through hole-shaped pin hole 332 is formed at the other end of the rotating shaft along the radial direction, a limit bolt 34 is inserted into the pin hole, a limit nut 35 is screwed on the limit bolt to hold the limit bolt on the rotating shaft, and the rotating shaft is held on the U-shaped support 39 by the enlarged head and the limit bolt. The base plate 31 is provided with fastening holes 311 through which bolts connect the cable bracket 30 to the header 25.
The roller 37 is sleeved on the rotating shaft and is positioned between the two vertical plates, and the rotating shaft 33 is freely inserted into the two shaft holes 321, so that the roller is rotatably arranged on the U-shaped support through the rotating shaft. Corresponding to each cable 100, a support groove 371 having an arc-shaped cross section is provided on the roller 37.
A locking hole 322 is formed at one end of each vertical plate 32 far away from the bottom plate 31, and a limiting nut 361 is screwed after the limiting bolts 36 sequentially pass through the locking holes on the two vertical plates of the same U-shaped support, so that the inhaul cable is limited in the U-shaped support.
Two ends of the waist beam 11 in the length direction are respectively fixedly provided with an anchor frame 40, four supporting parts 20 are respectively positioned between the two anchor frames 40, one end of a guy cable 100 is fixed on one anchor frame 40, the other end of the guy cable sequentially passes through each guy cable frame along the length direction of the waist beam and then is fixed on the other anchor frame 40, and each guy cable is propped against in a supporting groove corresponding to the roller.
Each anchoring frame 40 comprises a fixing frame 41, the fixing frame 41 comprises a limiting plate 44 and a fastening plate 43, the limiting plate 44 and the fastening plate 43 are welded on one side of the waist rail 11 facing the supporting part, the limiting plate 44 and the fastening plate 43 are arranged at intervals along the length direction of the waist rail, the fastening plate 43 is positioned on one side of the limiting plate 44 facing away from the supporting part, and two ends of a reinforcing plate 42 are welded on one ends of the limiting plate 44 and the fastening plate 43, which are far away from the waist rail, respectively.
The limiting plate 44 is provided with a limiting hole 441, the fastening plate 43 is provided with a tensioning hole 45, a clamping piece type anchor 46 is arranged between the limiting plate and the fastening plate, one end of a tensioning screw 47 is connected to the clamping piece type anchor 46, the other end of the tensioning screw extends towards the direction away from the limiting plate 44 and freely penetrates through the fastening plate 43 through the tensioning hole 45, then a tensioning nut 48 is screwed, and the end part of the inhaul cable 100 penetrates through the limiting hole 441 and is clamped on the clamping piece type anchor.
In order to improve the strength of the anchor frame, a reinforcing plate 49 is welded on one side of the limiting plate away from the fastening plate, and a reinforcing plate 49 is welded on one side of the fastening plate away from the limiting plate, wherein the reinforcing plates 49 are welded on the waist beam 11.
Two holding boxes 24 and two jacks 50 are arranged between each top beam 25 and the connecting beam 23, the jacks are used for pushing the top beams towards the direction away from the supporting frame so as to stretch the guy cable 100, prestress is generated on the guy cable, and after stretching of the guy cable is completed, two ends of the holding boxes are welded on the top beams and the connecting beam 23 respectively, so that the top beams are supported on the supporting frame through the holding boxes. The jack is detachably arranged between the top beam and the support frame through bolts, and the jack is detached after tensioning of the inhaul cable is completed.
Claims (6)
1. The utility model provides a prestressing force fish web instrument formula combination internal stay, its characterized in that includes a waist rail and installs at least three supporting part on this waist rail, and this at least three supporting part extends towards same direction, and all perpendicular to waist rail, and each supporting part all includes a support frame and a back timber, and this support frame fixed mounting is on the waist rail, and the back timber is located the support frame and deviates from the side of waist rail, and the cable frame is all fixed mounting in the back timber and deviates from the side of support frame, and each cable frame has the gyro wheel that rotates freely; two ends of the waist beam in the length direction are respectively fixedly provided with an anchor frame, all the supporting parts are positioned between the two anchor frames, one end of a guy cable is fixed on one anchor frame, the other end of the guy cable sequentially passes through each guy cable frame along the length direction of the waist beam and then is fixed on the other anchor frame, and the guy cable is propped against the idler wheels;
at least two conservation boxes and at least one jack are arranged between each top beam and the support frame, the jack is used for pushing the top beams towards the direction deviating from the support frame so as to stretch the inhaul cable, prestress is generated on the inhaul cable, and after stretching of the inhaul cable is completed, the two ends of each conservation box are respectively fixed on the top beams and the support frame, so that the top beams are supported on the support frame through the conservation boxes.
2. The prestressed fish web tool type composite inner support of claim 1, wherein,
the jack is detachably arranged between the top beam and the support frame, and the jack is detached after tensioning of the inhaul cable is completed.
3. The prestressed fish web tool type composite inner support of claim 1, wherein,
the inhaul cable frame comprises a U-shaped support, and the idler wheels are rotatably arranged on the U-shaped support through the rotating shaft.
4. The prestressed fish web tool type composite inner support of claim 3 wherein,
the U-shaped support comprises a bottom plate and two vertical plates parallelly arranged on the bottom plate, a rotating shaft is supported on the two vertical plates, a roller is positioned between the two vertical plates, a locking hole is formed in one end, far away from the bottom plate, of each vertical plate, and a limiting bolt sequentially penetrates through the locking holes of the two vertical plates of the same U-shaped support to limit a inhaul cable in the U-shaped support.
5. The prestressed fish web tool type composite inner support of claim 1, wherein,
corresponding to each inhaul cable, the roller is provided with a supporting groove with an arc-shaped section.
6. The prestressed fish web tool type composite inner support of claim 1, wherein,
each anchoring frame comprises a limiting plate and a fastening plate, wherein the fastening plate is positioned on one side of the back of the limiting plate, away from the supporting part, a limiting hole is formed in the limiting plate, a clamping piece type anchorage device is arranged between the limiting plate and the fastening plate, one end of a tensioning screw rod is connected to the clamping piece type anchorage device, the other end of the tensioning screw rod extends towards the direction deviating from the limiting plate and freely penetrates through the fastening plate, a tensioning nut is screwed on the tensioning screw rod, and the end part of a inhaul cable penetrates through the limiting hole and is clamped on the clamping piece type anchorage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321897067.0U CN220394560U (en) | 2023-07-18 | 2023-07-18 | Tool type combined inner support for prestressed fish web girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321897067.0U CN220394560U (en) | 2023-07-18 | 2023-07-18 | Tool type combined inner support for prestressed fish web girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220394560U true CN220394560U (en) | 2024-01-26 |
Family
ID=89611480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321897067.0U Active CN220394560U (en) | 2023-07-18 | 2023-07-18 | Tool type combined inner support for prestressed fish web girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220394560U (en) |
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2023
- 2023-07-18 CN CN202321897067.0U patent/CN220394560U/en active Active
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