CN218667203U - Low-clearance continuous lifting and mounting device for pile foundation underpinning long-span steel bent cap - Google Patents
Low-clearance continuous lifting and mounting device for pile foundation underpinning long-span steel bent cap Download PDFInfo
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- CN218667203U CN218667203U CN202222269447.1U CN202222269447U CN218667203U CN 218667203 U CN218667203 U CN 218667203U CN 202222269447 U CN202222269447 U CN 202222269447U CN 218667203 U CN218667203 U CN 218667203U
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- span steel
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Abstract
The utility model relates to a low-clearance continuous lifting installation device for pile foundation underpinning large-span steel bent cap, which particularly comprises a counter-force bracket, a lifting device, a steel strand and a carrying pole beam, wherein the lifting device is installed on the counter-force bracket; one end of the steel strand is connected with the lifting device; and two ends of the shoulder pole beam are respectively connected with the other ends of the two steel strands. The utility model provides a low headroom in upper portion, there is the spacing difficult problem of once integral erection of pier in steel longeron both sides. The Y direction of the steel support underpinning structure is limited by a pier, the Z direction of the top is limited by a box girder, and the low clearance hydraulic lifting technology is installed in sections to solve the problem of bidirectional limitation in the YZ direction.
Description
Technical Field
The utility model relates to a pile foundation underpins long span steel bent cap low headroom and promotes installation device in succession.
Background
With the accelerated development of underground space, because subways are not considered in the near and early planning of most cities, and the intersection between newly planned lines and old lines is gradually increased, the pile foundations of the subway tunnels penetrating through the existing buildings and bridges are almost inevitable in each city. Because the boundary conditions for underpinning the pile foundation of the viaduct are complex, ultra-low clearance operation is generally required, and the traditional hoisting equipment of the truck crane, the crawler crane and the folding arm crane cannot meet the clearance requirement, a novel underpinning structure installation device needs to be provided.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model is to overcome not enough among the prior art, provide a low headroom of pile foundation underpin long-span steel bent cap promotes installation device in succession.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
pile foundation underpins long-span steel bent cap low headroom and promotes installation device in succession, its characterized in that includes:
a counter-force corbel;
the lifting device is arranged on the counter-force bracket;
one end of the steel strand is connected with the lifting device;
and two ends of the carrying pole beam are respectively connected with the other ends of the two steel strands.
According to the utility model discloses a technical scheme, be provided with the height-adjusting cushion on the shoulder pole roof beam, height-adjusting cushion figure is more than two, and the interval sets up.
According to the utility model discloses a technical scheme, heighten the cushion with the connection can be dismantled to the shoulder pole roof beam.
According to the utility model discloses a technical scheme, the cushion of increaseing includes the cushion of multiple height.
According to the utility model discloses a technical scheme, it promotes the jack in succession for hydraulic pressure to carry the device.
The utility model provides a pile foundation underpins long span steel bent cap low headroom and promotes installation device in succession, during the use, at first sets up first festival longeron on the crossbeam. And a counter-force bracket is arranged on the cross beam, and the second longitudinal beam is abutted against the height-adjusting cushion block. The lifting device lifts the carrying pole beam through the steel strand, lifts the second longitudinal beam to a position aligned with the first longitudinal beam, and connects the first longitudinal beam with the second longitudinal beam in a welding mode.
Because the pile foundation underpins the low clearance problem of the long-span steel bent cap, the counter-force bracket can only be installed on the beam. And the first longitudinal beam is usually arranged on the upper surface of the cross beam and is higher than the counter force bracket. Therefore, it is difficult for the lifting device to lift the second longitudinal member to a position aligned with the first longitudinal member. Therefore, the utility model discloses be provided with the cushion of increaseing on the shoulder pole roof beam, raise the second festival longeron, make it can reach the position that aligns with first festival longeron. The height of the height-adjusting cushion block is various, and the cushion block can meet the requirements of different use occasions.
The utility model provides a low headroom in upper portion, there is the spacing difficult problem of once integral erection of pier in steel longeron both sides. The Y direction of the steel support underpinning structure is limited by a pier, the Z direction of the top is limited by a box girder, and the low clearance hydraulic lifting technology is installed in sections to solve the problem of bidirectional limitation in the YZ direction.
Drawings
Fig. 1 is a schematic view of the structure and the usage status of the present invention, the second longitudinal beam is not yet lifted.
Fig. 2 is the utility model provides a pile foundation underpins long span steel bent cap low headroom and promotes installation device schematic structure in succession.
Fig. 3 is a schematic view of the usage state of the present invention, the second longitudinal beam is lifted to the position aligned with the first longitudinal beam.
Detailed Description
As shown in fig. 1 to 3, the low-clearance continuous lifting installation device 1 for the pile underpinning large-span steel capping beam comprises a counter force bracket 2, a continuous lifting jack 3, a steel strand 4 and a carrying pole beam 5. The continuous lifting jack 3 is mounted on the counter-force bracket 2. One end of the steel strand 4 is connected with the continuous lifting jack 3, and the other end is connected with a carrying pole beam 5. Two ends of each carrying pole beam 5 are respectively connected with a steel strand 4. Two successive lifting jacks 3 lift together a spreader beam 5. The shoulder pole beam 5 is provided with two or more height adjusting cushion blocks 6, and the height adjusting cushion blocks 6 are arranged at intervals. The height-adjusting cushion block 6 is detachably connected with the shoulder pole beam 5. The height adjusting block 6 comprises blocks with various heights.
The utility model provides a pile foundation underpins long span steel bent cap low headroom and promotes installation device in succession, during the use, at first sets up first festival longeron 12 on crossbeam 11. The counter-force bracket 2 is arranged on the cross beam 11, and the second longitudinal beam 13 is abutted against the height-adjusting cushion block 6. The continuous lifting jack 3 lifts the carrying pole beam 5 through the steel strand 4, lifts the second longitudinal beam 13 to a position aligned with the first longitudinal beam 12, and connects the first longitudinal beam 12 and the second longitudinal beam 13 in a welding mode.
Because the pile foundation underpins the low clearance problem of the long-span steel bent cap, the counter-force bracket can only be installed on the beam. And the first longitudinal beam is usually arranged on the upper surface of the cross beam and is higher than the counter force bracket. Therefore, it is difficult for the lifting device to lift the second longitudinal member to a position aligned with the first longitudinal member. Therefore, the utility model discloses be provided with the height-adjusting cushion on the shoulder pole roof beam, raise the second festival longeron, make it can reach the position that aligns with first festival longeron. The height of the height-adjusting cushion block is various, and the cushion block can meet the requirements of different use occasions.
The utility model provides a low headroom in upper portion, there is the spacing difficult problem of once integral erection of pier in steel longeron both sides. The Y direction of the steel support underpinning structure is limited by a pier, the Z direction of the top is limited by a box girder, and the low clearance hydraulic lifting technology is installed in sections to solve the problem of bidirectional limitation in the YZ direction.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (5)
1. Pile foundation underpins long-span steel bent cap low headroom and promotes installation device in succession, its characterized in that includes:
a counter-force corbel;
the lifting device is arranged on the counter-force bracket;
one end of the steel strand is connected with the lifting device;
and two ends of the carrying pole beam are respectively connected with the other ends of the two steel strands.
2. The pile foundation underpinning large-span steel capping beam low-clearance continuous lifting installation device according to claim 1, wherein the shoulder pole beam is provided with two or more height-adjusting cushion blocks which are arranged at intervals.
3. The pile foundation underpinning large-span steel capping beam low clearance continuous lifting installation device of claim 2, wherein the height adjusting cushion block is detachably connected with the shoulder pole beam.
4. The pile foundation underpinning large-span steel cap beam low clearance continuous lifting installation device of claim 3, wherein the height adjusting cushion block comprises a plurality of height cushion blocks.
5. The pile foundation underpinning large-span steel cap beam low clearance continuous lifting installation device of claim 1, wherein the lifting device is a hydraulic continuous lifting jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222269447.1U CN218667203U (en) | 2022-08-26 | 2022-08-26 | Low-clearance continuous lifting and mounting device for pile foundation underpinning long-span steel bent cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222269447.1U CN218667203U (en) | 2022-08-26 | 2022-08-26 | Low-clearance continuous lifting and mounting device for pile foundation underpinning long-span steel bent cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218667203U true CN218667203U (en) | 2023-03-21 |
Family
ID=85554927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222269447.1U Active CN218667203U (en) | 2022-08-26 | 2022-08-26 | Low-clearance continuous lifting and mounting device for pile foundation underpinning long-span steel bent cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218667203U (en) |
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2022
- 2022-08-26 CN CN202222269447.1U patent/CN218667203U/en active Active
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