CN219972970U - Pier underpinning structure - Google Patents
Pier underpinning structure Download PDFInfo
- Publication number
- CN219972970U CN219972970U CN202320951272.4U CN202320951272U CN219972970U CN 219972970 U CN219972970 U CN 219972970U CN 202320951272 U CN202320951272 U CN 202320951272U CN 219972970 U CN219972970 U CN 219972970U
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- China
- Prior art keywords
- steel
- bridge
- pier
- jack
- bent cap
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- 238000009424 underpinning Methods 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 77
- 239000010959 steel Substances 0.000 claims abstract description 77
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000010276 construction Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a pier underpinning structure which comprises a bridge, two underpinning pile foundations, two supporting pier columns and a steel bent cap horizontally arranged, wherein the two underpinning pile foundations are respectively arranged on two sides of the bridge, the supporting pier columns are fixed at the tops of the underpinning pile foundations, two ends of the steel bent cap are respectively fixed with the tops of the two supporting pier columns, a plurality of jacks are arranged on the top surface of the steel bent cap, the jacks are arranged along the length direction of the steel bent cap, a distribution beam is fixed at the output end of each jack, the distribution beam is arranged along the length direction of the steel bent cap, and the distribution beam is fixed with each jack and is used for being connected with the bridge. The utility model has the effect of improving the construction safety of the bridge pier during the towing and replacing.
Description
Technical Field
The utility model relates to the field of bridge pier construction, in particular to a bridge pier underpinning structure.
Background
With the continuous perfection of national traffic facilities, the new and old replacement rate of road construction is also accelerated, and in order to meet road construction planning, partial piers need to be rebuilt to replace old piers.
The existing underpinning pile is used for bearing the upper load of the overpass pile in the construction process by erecting the underpinning structure, the jack is arranged at the top of the underpinning structure and is directly connected with the pier, the height of the bridge is adjusted by adjusting the jack, the pier is replaced, and the jack is directly connected with the pier, so that the pressure acting on the bridge is high, and the potential safety hazard of deformation exists in the contact part of the bridge and the jack during construction, so that improvement is needed.
Disclosure of Invention
In order to improve construction safety during pier dragging and replacing, the utility model provides a pier underpinning structure.
The bridge pier underpinning structure provided by the utility model adopts the following technical scheme:
the utility model provides a pier underpinning structure, includes bridge, two underpinning pile foundations, two support pier stud and the steel bent cap that the level set up, two underpinning pile foundations set up respectively in the both sides of bridge, it fixes to support the pier stud the top of underpinning pile foundation, the both ends of steel bent cap respectively with two the top of supporting the pier stud is fixed, the top surface of steel bent cap is provided with a plurality of jacks, a plurality of the jack is followed the length direction of steel bent cap sets up, the output of jack is fixed with the distribution roof beam, the distribution roof beam is followed the length direction's of steel bent cap sets up, the distribution roof beam with every the jack is all fixed, the distribution roof beam be used for with the bridge is connected.
Through adopting above-mentioned technical scheme, construction underpinning basis, set up the jack at the top surface of steel bent cap, and the top surface of jack is provided with the distribution roof beam, make the distribution roof beam contact with the bridge, the weight of bridge passes through the distribution roof beam and transmits to the jack, and when the area of contact of distribution roof beam and bridge is relative jack direct with the bridge contact, increase area of contact, according to pressure formula P=F/S, when the jack is jacked up the bridge to the reduction, the pressure of bridge stress point reduces, when making the pier drag change construction, reduce the deformation possibility of bridge, thereby improve the construction safety when the pier underpinning.
Preferably, a temporary conversion steel buttress is arranged between the steel bent cap and the distribution beam, the bottom surface of the temporary conversion steel buttress is fixedly connected with the top surface of the steel bent cap, and the top surface of the temporary conversion steel buttress is fixedly connected with the bottom surface of the distribution beam.
Through adopting above-mentioned technical scheme, after the jack up the distribution roof beam, the temporary conversion steel buttress is fixed between steel bent cap and distribution roof beam, bears the weight of partial bridge, lightens the loading of jack, protects the jack, prolongs the life of device.
Preferably, the top surface of the distribution beam is provided with two lifting pieces, and the two lifting pieces are respectively close to two ends of the distribution beam.
Through adopting above-mentioned technical scheme, the latch closure is used for being connected with devices such as cable, makes external apparatus will distribute Liang Laqi, when making jack work will distribute Liang Dingqi, reduces the needs bearing of jack, provides more operating means for underpinning construction.
Preferably, the top is provided with an operation platform, the operation platform is used for operating and checking the steel bent cap and the jack, and the operation platform is provided with a guardrail.
Through adopting above-mentioned technical scheme, the staff is at operation platform to steel bent cap and jack bearing, and operation platform supplies constructor to tie the safety belt, improves staff's construction safety.
Preferably, the top and bottom of the distribution beam are each provided with a steel pad.
By adopting the technical scheme, the steel pad plays a role in buffering the distribution beam, and the deformation degree of the distribution beam during bearing is reduced.
Preferably, a pressure bearing backing plate is arranged between the bottom surface of the steel bent cap and the supporting pier column.
By adopting the technical scheme, the pressure bearing backing plate plays a role in buffering the bottom surface of the steel bent cap, and the deformation degree of the steel bent cap is reduced.
Preferably, a limiting piece for limiting the steel capping beam is arranged at the top of the supporting pier column.
Through adopting above-mentioned technical scheme, the locating part makes the position of steel bent cap inject, makes the steel bent cap be difficult for because of the atress displacement, improves the security of construction.
Preferably, a rubber pad is arranged between the limiting piece and the side face of the steel bent cap.
Through adopting above-mentioned technical scheme, the rubber pad reduces the hard connection of locating part and steel bent cap, reduces the deformation of locating part and steel bent cap side when making the locating part play spacing effect to steel bent cap, improves the durability of construction device.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. when the contact area of the distribution beam and the bridge is in direct contact with the bridge relative to the jack, the contact area is increased, the pressure intensity of a stress point of the bridge when the jack jacks the bridge is reduced according to a pressure intensity formula P=F/S, and the deformation possibility of the bridge is reduced when the bridge pier is in dragging and replacing construction, so that the construction safety of the bridge pier is improved when the bridge pier is in underpinning;
2. after the jack jacks up the distribution beam, the temporary conversion steel buttress is fixed between the steel capping beam and the distribution beam to bear the weight of part of the bridge, so that the load of the jack is reduced, the jack is protected, and the service life of the device is prolonged;
3. the staff is at operation platform to steel bent cap and jack bearing, and operation platform supplies constructor to tie the safety belt, improves staff's construction safety.
Drawings
Fig. 1 is a schematic diagram of the overall structure in the embodiment of the present utility model.
Fig. 2 is a side view of the overall structure in an embodiment of the utility model.
Fig. 3 is an enlarged view of section a in an embodiment of the utility model.
Fig. 4 is an enlarged view of section B in the embodiment of the present utility model.
Reference numerals illustrate:
1. a bridge; 2. underpinning pile foundation; 3. a bearing table; 4. supporting pier columns; 5. a steel capping beam; 6. a jack; 7. temporarily converting the steel buttress; 8. a distribution beam; 9. an operating platform; 10. a support frame; 11. guard bars; 12. hoisting the piece; 13. a connecting piece; 14. a guy cable; 15. a limiting piece; 16. a rubber pad; 17. a pressure bearing backing plate; 18. a steel pad; 19. ground surface.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-4.
The embodiment of the utility model discloses a bridge pier underpinning structure. Referring to fig. 1, a pier underpinning structure, including bridge 1, two underpinning pile foundations 2, two support pier stud 4, steel bent cap 5 and distribution beam 8, two underpinning pile foundations 2 set up respectively in the both sides of bridge 1, bearing platform 3 has all been pour at the top of every underpinning pile foundation 2, support pier stud 4 is fixed at the top of bearing platform 3, steel bent cap 5 level set up and steel bent cap 5 both ends respectively with two support pier stud 4's top is fixed, steel bent cap 5's top surface is provided with two jacks 6, two jacks 6 are followed steel bent cap 5's length direction sets up, distribution beam 8 is followed steel bent cap 5's length direction level sets up, distribution beam 8's bottom surface and two jacks 6 all are connected, distribution beam 8 is used for being connected with bridge 1.
Referring to fig. 1, the top surface of the steel capping beam 5 is further fixed with two temporary conversion steel buttresses 7, the two temporary conversion steel buttresses 7 are all disposed between the two jacks 6, the bottom surface of the temporary conversion steel buttresses 7 abuts against the top surface of the steel capping beam 5, and the top surface of the temporary conversion steel buttresses 7 abuts against the top surface of the distribution beam 8.
Referring to fig. 1, the top surfaces of the distribution beam 8 near the two ends are respectively fixed with a lifting member 12, the top surfaces of the steel cover beam 5 near the two ends are respectively fixed with a connecting member 13, and a guy cable 14 is connected between the similar lifting members 12 and the connecting members 13.
Referring to fig. 1, a horizontal supporting frame 10 is fixed to a side wall of a supporting pier column 4, an operation platform 9 is fixed to the top surface of the supporting pier column 4, a guardrail 11 is provided on the operation platform 9, the operation platform 9 extends to the outside of the supporting pier column 4 above the supporting frame 10, and the operation platform 9 is fixed to the supporting frame 10.
Referring to fig. 2 and 3, the top surface of each supporting pier column 4 is fixed with two limiting pieces 15, the two limiting pieces 15 are respectively fixed on two sides of the steel bent cap 5, the side surfaces of the limiting pieces 15 and the steel bent cap 5 are provided with rubber pads 16, and the bottom surface of the steel bent cap 5 is fixed with a pressure bearing pad 17.
Referring to fig. 4, steel pads 18 are fixed to both the top and bottom surfaces of the distribution beam 8, the steel pads 18 of the top surface of the distribution beam 8 are used to abut against the bridge 1, and the steel pads 18 of the bottom surface of the distribution beam 8 are used to abut against the jack 6 and the temporary transfer steel pier 7.
The implementation principle of the bridge pier underpinning structure provided by the embodiment of the utility model is as follows: pouring underpinning pile foundation 2, bearing platform 3 and support pier as the underpinning basis, fix steel bent cap 5 level at the top surface of two support pier studs 4, set up the jack 6 at the top surface of steel bent cap 5, and the top surface of jack 6 is provided with distribution beam 8, and two jacks 6 are directly provided with the weight of interim conversion steel buttress 7 sharing distribution beam 8, make distribution beam 8 and bridge 1 contact, the weight of bridge 1 passes through distribution beam 8 and transmits jack 6 and interim conversion steel buttress 7, and the area of contact of distribution beam 8 and bridge 1 increases area of contact when jack 6 is direct to be contacted with bridge 1, according to pressure formula P=F/S, when reducing jack 6 jack 1 jack-up, the pressure of bridge 1 stress point reduces, make bridge pier drag the deformation possibility of bridge 1, thereby the construction safety when improving the pier underpinning.
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 pier underpinning structure, its characterized in that, including bridge (1), two underpinning pile foundation (2), two support pier stud (4) and steel bent cap (5) that the level set up, two underpinning pile foundation (2) set up respectively in the both sides of bridge (1), support pier stud (4) are fixed the top of underpinning pile foundation (2), the both ends of steel bent cap (5) are fixed with the top of two support pier stud (4) respectively, the top surface of steel bent cap (5) is provided with a plurality of jacks (6), a plurality of jack (6) are followed the length direction setting of steel bent cap (5), the output of jack (6) is fixed with distribution beam (8), distribution beam (8) are followed the length direction setting of steel bent cap (5), distribution beam (8) and every jack (6) are all fixed, distribution beam (8) be used for with bridge (1) are connected.
2. The bridge pier underpinning structure according to claim 1, wherein a temporary conversion steel buttress (7) is arranged between the steel cap beam (5) and the distribution beam (8), the bottom surface of the temporary conversion steel buttress (7) is fixedly connected with the top surface of the steel cap beam (5), and the top surface of the temporary conversion steel buttress (7) is fixedly connected with the bottom surface of the distribution beam (8).
3. The bridge pier underpinning structure according to claim 1, wherein the top surface of the distribution beam (8) is provided with two hoisting pieces (12), and the two hoisting pieces (12) are respectively close to two ends of the distribution beam (8).
4. The bridge pier underpinning structure according to claim 1, characterized in that an operation platform (9) is arranged at the top, the operation platform (9) is used for operating and inspecting the steel cap beam (5) and the jack (6), and a guardrail (11) is arranged on the operation platform (9).
5. The bridge pier underpinning structure according to claim 1, characterized in that the distribution beams (8) are provided with steel pads (18) at the top and bottom.
6. The bridge pier underpinning structure according to claim 1, characterized in that a bearing pad (17) is arranged between the bottom surface of the steel cap beam (5) and the supporting pier column (4).
7. The bridge pier underpinning structure according to claim 1, characterized in that the top of the supporting pier column (4) is provided with a limiting piece (15) for limiting the steel cap beam (5).
8. The bridge pier underpinning structure according to claim 7, characterized in that a rubber pad (16) is arranged between the limiting piece (15) and the side face of the steel cap beam (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320951272.4U CN219972970U (en) | 2023-04-23 | 2023-04-23 | Pier underpinning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320951272.4U CN219972970U (en) | 2023-04-23 | 2023-04-23 | Pier underpinning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219972970U true CN219972970U (en) | 2023-11-07 |
Family
ID=88582716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320951272.4U Active CN219972970U (en) | 2023-04-23 | 2023-04-23 | Pier underpinning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219972970U (en) |
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2023
- 2023-04-23 CN CN202320951272.4U patent/CN219972970U/en active Active
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