CN219618122U - Box girder prefabricated pedestal pre-pressing loading device - Google Patents
Box girder prefabricated pedestal pre-pressing loading device Download PDFInfo
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- CN219618122U CN219618122U CN202321086899.4U CN202321086899U CN219618122U CN 219618122 U CN219618122 U CN 219618122U CN 202321086899 U CN202321086899 U CN 202321086899U CN 219618122 U CN219618122 U CN 219618122U
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Abstract
The utility model relates to a box girder prefabrication pedestal pre-pressing loading device, and relates to the technical field of box girder prefabrication. The steel bar or section steel positioning device comprises a base for placing steel bars or section steel and a plurality of limiting pieces arranged on the base; the base is arranged at the top of the pedestal, and the long side direction of the base is parallel to the long side direction of the pedestal; and the limiting parts are distributed along the long side direction of the base and used for preventing the steel bars or the section steel from sliding off the base. Through setting up the base on the pedestal, a plurality of locating parts can carry out spacingly to reinforcing bar or shaped steel, have prevented reinforcing bar or shaped steel from the landing on the pedestal, can increase the number of piles up the layer of reinforcing bar or shaped steel according to the load volume of design to can accurately verify pedestal foundation bearing capacity condition, in the follow-up box girder formal prefabrication in-process, avoid the condition that the pedestal subsides, thereby improved the quality of prefabricated box girder.
Description
Technical Field
The utility model relates to the technical field of box girder prefabrication, in particular to a box girder prefabrication pedestal pre-pressing loading device.
Background
In the process of prefabricating the box girder, a pedestal for prefabricating the box girder is required to be established so as to bear the load of the box girder steel bars and the concrete structure. The pedestal comprises a plurality of buttress, and a plurality of buttress roof flushes the setting to guarantee the roughness of case roof beam diapire. When the foundation under the pedestal is a soft foundation or the foundation treatment bearing capacity does not meet the design requirement, the pedestal will be settled in the prefabrication process of the box girder, so that the pedestal needs to be preloaded before the formal prefabrication construction of the box girder to test the load range born by the pedestal foundation, and the pedestal is prevented from settling in the prefabrication process of the box girder to influence the quality of the box girder.
In the related art, the method for pre-loading the pedestal is to directly stack materials such as steel bars or section steel and stack the materials on the pedestal for loading, and observe and record the settlement of the pedestal, so that the settlement deviation is in an allowable range, and the pedestal can be put into the box girder for prefabrication.
For the related technology, because the pedestal is generally narrower in width and longer in length, when materials such as steel bars or section steel are directly stacked and stacked, in order to prevent the steel bars or section steel from sliding off the pedestal, the stacking layer number of the steel bars or section steel cannot be too high, so that the designed load capacity cannot be achieved, the foundation bearing capacity condition of the pedestal cannot be accurately checked, the pedestal settlement can occur during the formal prefabrication of the follow-up box girder, and the quality of the prefabrication box girder is affected.
Disclosure of Invention
In order to improve the quality of a prefabricated box girder, the utility model provides a box girder prefabricated pedestal pre-pressing loading device.
The utility model provides a box girder prefabricated pedestal pre-pressing loading device which adopts the following technical scheme:
the pre-pressing loading device for the box girder prefabricated pedestal comprises a base for placing steel bars or section steel and a plurality of limiting pieces arranged on the base;
the base is arranged at the top of the pedestal, and the long side direction of the base is parallel to the long side direction of the pedestal;
and the limiting parts are distributed along the long side direction of the base and used for preventing the steel bars or the section steel from sliding off the base.
By adopting the technical scheme, the base is arranged on the pedestal, the plurality of limiting pieces can limit the steel bars or the section steel, so that the steel bars or the section steel are prevented from sliding off the pedestal, the stacking layer number of the steel bars or the section steel can be increased according to the designed load quantity, the bearing capacity condition of the pedestal foundation can be accurately checked, the pedestal settlement condition is avoided in the follow-up box girder formal prefabrication process, and the quality of the prefabrication box girder is improved; meanwhile, as the pedestal or the pedestal foundation does not need to be reworked, the production cost is reduced, and the prefabrication period of the box girder is shortened; in addition, the limiting piece prevents the steel bars or the section steel from sliding off the pedestal, and safety of mechanical equipment beside the pedestal and staff is improved.
Optionally, the base includes a plurality of longerons that set up on the pedestal, a plurality of the longeron distributes along the long limit direction of pedestal, every the long limit direction of longeron is perpendicular with the long limit direction of pedestal, one the locating part set up in one on the longeron.
Through adopting above-mentioned technical scheme, a plurality of longerons of design compare in the base of traditional meaning, when giving the load transfer of reinforcing bar or shaped steel to the pedestal, alleviateed the weight of base to the staff of being convenient for installs the base on the pedestal.
Optionally, the base further comprises at least one reinforcing plate, and the reinforcing plate is detachably and fixedly connected with each longitudinal beam respectively.
Through adopting above-mentioned technical scheme, the reinforcing plate of design can dismantle the rigid coupling through reinforcing plate and every longeron, has strengthened the structural strength of whole base on the one hand, and on the other hand is dismantled the reinforcing plate, the reuse of the reinforcing plate of being convenient for.
Optionally, the base further comprises at least two connecting plates, wherein the connecting plates are pre-buried on the top wall of the pedestal, and the connecting plates are detachably and fixedly connected with the bottoms of the longitudinal beams respectively.
Through adopting above-mentioned technical scheme, the rigid coupling can be dismantled through connecting plate and every longeron bottom to the connecting plate of design, has realized the installation and the dismantlement of longeron on the one hand, and the used repeatedly of longeron of being convenient for has further strengthened the structural strength of whole base on the other hand.
Optionally, each limiting part comprises two opposite limiting rods, the two limiting rods are connected to the same longitudinal beam, and the two limiting rods and the longitudinal beam form a placing cavity for placing the reinforcing steel bars or the sectional materials.
Through adopting above-mentioned technical scheme, the locating part of design stacks up reinforcing bar or shaped steel and puts things in good order in placing the chamber, because two dead levers just right stop reinforcing bar or shaped steel and follow the landing from the pedestal, be convenient for increase more multilayer reinforcing bar or shaped steel.
Optionally, each longitudinal beam is provided with an inclined strut for supporting the limiting rod, one end of the inclined strut is connected with the limiting rod, and the other end of the inclined strut is connected with the longitudinal beam.
Through adopting above-mentioned technical scheme, the bracing of design has increased the structural strength of gag lever post, has improved the stability of gag lever post.
Optionally, the limiting rod comprises a fixed section and a sliding section;
the fixed section is sleeved on the sliding section, the sliding section can slide along the long side direction of the fixed section, one end of the fixed section, which is far away from the sliding section, is connected with the longitudinal beam, and one end of the diagonal brace is connected with the fixed section;
the fixing section is provided with a locking piece for fixing the position of the sliding section.
Through adopting above-mentioned technical scheme, the fixed section and the sliding section of design are convenient for increase the length of gag lever post for can pile up the more reinforcing bar of stacking up or shaped steel in placing the chamber, improved pedestal pre-compaction loading device's stability.
Optionally, the retaining member includes lock bolt and lock nut, the lock bolt runs through the fixed section with the slip section sets up and with lock nut threaded connection, set up on the slip section and be used for a plurality of through-holes that the lock bolt runs through, a plurality of the through-hole is followed slip section length limit direction distributes.
Through adopting above-mentioned technical scheme, the lock bolt and the lock nut of design are worn to locate in the through-hole that corresponds through the lock bolt, lock nut and lock bolt threaded connection, are convenient for fix the length of gag lever post.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. according to the designed box girder prefabrication pedestal pre-pressing loading device, the base is arranged on the pedestal, the steel bars or the steel bars can be limited by the limiting pieces, the steel bars or the steel bars are prevented from sliding off the pedestal, the stacking layer number of the steel bars or the steel bars can be increased according to the designed load quantity, so that the bearing capacity condition of the pedestal foundation can be accurately checked, the pedestal settlement condition is avoided in the follow-up box girder formal prefabrication process, and the quality of the prefabrication box girder is improved;
2. the designed box girder prefabrication pedestal pre-pressing loading device reduces the production cost and shortens the prefabrication period of the box girder as the pedestal or the pedestal foundation does not need to be reworked;
3. according to the designed box girder prefabricated pedestal pre-pressing loading device, the limiting piece prevents the steel bars or the section steel from sliding off from the pedestal, and safety of mechanical equipment beside the pedestal and staff is improved.
Drawings
FIG. 1 is a schematic structural view of a box girder prefabricated pedestal pre-loading device according to embodiment 1 of the present utility model;
FIG. 2 is a schematic structural view of a pre-pressing loading device for a box girder prefabricated pedestal according to embodiment 2 of the present utility model;
fig. 3 is an enlarged view of a portion a in fig. 2.
Reference numerals: 1. a base; 11. a connecting plate; 12. a longitudinal beam; 13. a reinforcing plate; 2. a limiting piece; 21. a limit rod; 211. a fixed section; 212. a sliding section; 213. a locking bolt; 2131. a through hole; 214. a lock nut; 22. a placement cavity; 23. diagonal bracing; 3. a pedestal; 31. and (5) supporting piers.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-3.
The embodiment of the utility model discloses a box girder prefabricated pedestal pre-pressing loading device.
Example 1
Referring to fig. 1, a pre-pressing loading device for a box girder prefabricated pedestal comprises a base 1 for placing steel bars or section steel and a plurality of limiting pieces 2 arranged on the base 1, wherein the base 1 is arranged at the top of the pedestal 3, the long side direction of the base 1 is parallel to the long side direction of the pedestal 3, the plurality of limiting pieces 2 are distributed along the long side direction of the base 1 and are used for blocking the steel bars or section steel from sliding off the base 1, the pedestal 3 in the embodiment comprises five buttresses 31 made of concrete, and the top walls of the five buttresses 31 are flush.
Referring to fig. 1, a base 1 includes at least two connection plates 11, a plurality of stringers 12 disposed on a pedestal 3, and at least one reinforcing plate 13, in this embodiment, the number of connection plates 11 is two, and the material is 50mm by 50mm angle steel, two connection plates 11 are all pre-embedded on top walls of five buttresses 31, in this embodiment, the number of stringers 12 is five, and the material is 20 h-steel, in this embodiment, the number of stringers 12 may be ten, and it is only necessary to implement transmission of load of steel bars or section steel to buttresses 31; five longitudinal beams 12 are distributed along the long side direction of the pedestal 3, one longitudinal beam 12 is arranged on the top wall of a buttress 31, each longitudinal beam 12 is horizontally arranged, the long side direction of each longitudinal beam 12 is vertical to the long side direction of the pedestal 3, a limiting piece 2 is arranged on one longitudinal beam 12, and the top walls of two connecting plates 11 are detachably and fixedly connected with the bottom of each longitudinal beam 12; in this embodiment, the number of the reinforcing plates 13 is five, the five reinforcing plates 13 are detachably and fixedly connected with each longitudinal beam 12, the material of each reinforcing plate 13 is a steel plate with the thickness of 10mm, and the five reinforcing plates 13 are arranged in parallel.
Referring to fig. 1, in this embodiment, each limiting member 2 includes two opposite limiting rods 21, and in this embodiment, each limiting member 2 may further include two limiting plates, so that the limiting of the steel bar or the section steel is realized, the material of the limiting rods 21 is a channel steel No. 10, the two limiting rods 21 are all connected to the top wall of the same longitudinal beam 12, in this embodiment, the two limiting rods 21 are vertically arranged, and the two limiting rods 21 and the longitudinal beam 12 together form a placing cavity 22 for placing the steel bar or the section steel.
Referring to fig. 1, in order to facilitate increasing the structural strength of the limiting rod 21, in this embodiment, each longitudinal beam 12 is provided with an inclined strut 23 for supporting the limiting rod 21, the inclined strut 23 is made of channel steel No. 10, one end of the inclined strut 23 is connected with the limiting rod 21, the other end is connected with the longitudinal beam 12, and the inclined struts 23 are located on two opposite sides, away from each other, of the limiting rods 21.
In order to facilitate the installation and the disassembly of the longitudinal beam 12, the reinforcing plate 13, the limiting rod 21 and the diagonal brace 23 and recycle the longitudinal beam 12, the reinforcing plate 13, the limiting rod 21 and the diagonal brace 23, in this embodiment, the longitudinal beam 12 and the connecting plate 11, the longitudinal beam 12 and the reinforcing plate 13, the longitudinal beam 12 and the limiting rod 21, the longitudinal beam 12 and the diagonal brace 23 and the limiting rod 21 and the diagonal brace 23 are all fixed by spot welding, and the utility model can also be fixed by adopting a bolt connection mode.
The embodiment 1 of the utility model provides an implementation principle of a box girder prefabricated pedestal 1 pre-pressing loading device, which comprises the following steps: when the pre-pressing loading device is installed, firstly, the buttress 31 is poured through concrete, two connecting plates 11 above the edges of the two sides of the buttress 31 are installed in a pre-buried mode, so that the connecting plates 11 are flush with the top wall of the buttress 31, then five longitudinal beams 12 are spot-welded on the connecting plates 11, then the reinforcing plates 13 are spot-welded on the five longitudinal beams 12, then the limiting rods 21 are spot-welded on the top wall of the longitudinal beams 12, two limiting rods 21 which are opposite to each other on the same longitudinal beam 12 form a placing cavity 22, finally, one end of each diagonal brace 23 is spot-welded with the top wall of the longitudinal beam 12, and the other end of each diagonal brace is spot-welded with the limiting rod 21, so that the installation of the pre-pressing loading device is realized.
When the box girder is used, a plurality of steel bars or section steel are stacked in the placing cavity 22 through the crane, a worker observes and records settlement of the buttress 31 until the settlement deviation is within an allowable range, then the longitudinal beam 12, the reinforcing plate 13, the limiting rod 21 and the diagonal bracing 23 are disassembled, the box girder is prefabricated, and repeated use of the longitudinal beam 12, the reinforcing plate 13, the limiting rod 21 and the diagonal bracing 23 is conveniently realized.
The steel bars or the section steel are limited in the placing cavity 22 through the limiting rods 21, so that the steel bars or the section steel are prevented from sliding off from the pedestal 3, the stacking layer number of the steel bars or the section steel can be increased according to the designed load quantity, the foundation bearing capacity condition of the pedestal 3 can be accurately checked, the settlement condition of the pedestal 3 is avoided in the follow-up box girder formal prefabrication process, and the quality of the prefabricated box girder is improved; meanwhile, as the pedestal 3 or the pedestal 3 foundation is not required to be reworked, the production cost is reduced, and the prefabrication period of the box girder is shortened; in addition, the limiting piece 2 prevents steel bars or section steel from sliding off the pedestal 3, and safety of mechanical equipment beside the pedestal 3 and workers is improved.
Example 2
Referring to fig. 2 and 3, the difference between the present embodiment and embodiment 1 is that the stop lever 21 includes a fixed section 211 and a sliding section 212, the fixed section 211 and the sliding section 212 are both channel steel, the directions of the notch of the two channel steel are the same, the fixed section 211 is sleeved on the sliding section 212, the sliding section 212 can slide along the long side direction of the fixed section 211, one end of the fixed section 211 far away from the sliding section 212 is spot-welded with the longitudinal beam 12, and one end of the diagonal brace 23 is spot-welded with the fixed section 211; the fixed section 211 is provided with a locking piece for fixing the position of the sliding section 212, the locking piece comprises a locking bolt 213 and a locking nut 214, the locking bolt 213 penetrates through the fixed section 211 and the sliding section 212 to be arranged and in threaded connection with the locking nut 214, the sliding section 212 is provided with a plurality of through holes 2131 for the locking bolt 213 to penetrate through, and the through holes 2131 are uniformly distributed along the long side direction of the sliding section 212.
The embodiment 2 of the utility model relates to a box girder prefabricated pedestal pre-pressing loading device, which has the implementation principle that: through separating lock nut 214 and lock bolt 213, then pull lock bolt 213 out from a through-hole 2131, pulling sliding section 212 slides along fixed section 211 length limit direction to adjust the length of gag lever post 21, then fix the length of gag lever post 21 through lock bolt 213 and lock nut 214, make the height of placing chamber 22 increase, be convenient for place more reinforcing bars or shaped steel, the upper limit value of exerting the load on the pre-compaction loading device of place has been improved, and the suitability of pre-compaction loading device has also been improved.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. The utility model provides a precast pedestal pre-compaction loading device of case roof beam which characterized in that: comprises a base (1) for placing steel bars or section steel and a plurality of limiting pieces (2) arranged on the base (1);
the base (1) is arranged at the top of the pedestal (3), and the long side direction of the base (1) is parallel to the long side direction of the pedestal (3);
the limiting pieces (2) are distributed along the long side direction of the base (1) and used for preventing steel bars or section steel from sliding off from the base (1).
2. The box girder prefabricated pedestal pre-pressing loading device according to claim 1, wherein: the base (1) comprises a plurality of longitudinal beams (12) arranged on the pedestal (3), the longitudinal beams (12) are distributed along the long side direction of the pedestal (3), the long side direction of each longitudinal beam (12) is perpendicular to the long side direction of the pedestal (3), and one limiting piece (2) is arranged on one longitudinal beam (12).
3. The box girder prefabricated pedestal pre-pressing loading device according to claim 2, wherein: the base (1) further comprises at least one reinforcing plate (13), and the reinforcing plate (13) is detachably and fixedly connected with each longitudinal beam (12) respectively.
4. A box girder prefabricated pedestal preloading device according to any of claims 2-3, characterized in that: the base (1) further comprises at least two connecting plates (11), the connecting plates (11) are pre-buried in the top wall of the pedestal (3), and the connecting plates (11) are detachably and fixedly connected with the bottoms of the longitudinal beams (12) respectively.
5. The box girder prefabricated pedestal pre-pressing loading device according to claim 2, wherein: each limiting part (2) comprises two opposite limiting rods (21), the two limiting rods (21) are connected to the same longitudinal beam (12), and the two limiting rods (21) and the longitudinal beam (12) form a placing cavity (22) for placing reinforcing steel bars or sectional materials.
6. The box girder prefabricated pedestal pre-pressing loading device according to claim 5, wherein: each longitudinal beam (12) is provided with an inclined strut (23) for supporting the limiting rod (21), one end of the inclined strut (23) is connected with the limiting rod (21), and the other end of the inclined strut is connected with the longitudinal beam (12).
7. The box girder prefabricated pedestal pre-pressing loading device according to claim 6, wherein: the limiting rod (21) comprises a fixed section (211) and a sliding section (212);
the fixed section (211) is sleeved on the sliding section (212), the sliding section (212) can slide along the long side direction of the fixed section (211), one end, away from the sliding section (212), of the fixed section (211) is connected with the longitudinal beam (12), and one end of the diagonal brace (23) is connected with the fixed section (211);
the fixing section (211) is provided with a locking piece for fixing the position of the sliding section (212).
8. The box girder prefabricated pedestal pre-pressing loading device according to claim 7, wherein: the locking piece comprises a locking bolt (213) and a locking nut (214), wherein the locking bolt (213) penetrates through the fixed section (211) and the sliding section (212) to be arranged and connected with the locking nut (214) in a threaded mode, a plurality of through holes (2131) used for the locking bolt (213) to penetrate through are formed in the sliding section (212), and the through holes (2131) are distributed along the long side direction of the sliding section (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321086899.4U CN219618122U (en) | 2023-05-08 | 2023-05-08 | Box girder prefabricated pedestal pre-pressing loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321086899.4U CN219618122U (en) | 2023-05-08 | 2023-05-08 | Box girder prefabricated pedestal pre-pressing loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219618122U true CN219618122U (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321086899.4U Active CN219618122U (en) | 2023-05-08 | 2023-05-08 | Box girder prefabricated pedestal pre-pressing loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219618122U (en) |
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2023
- 2023-05-08 CN CN202321086899.4U patent/CN219618122U/en active Active
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