CN215405610U - Steel case roof beam pushes away uses interim buttress structure - Google Patents
Steel case roof beam pushes away uses interim buttress structure Download PDFInfo
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- CN215405610U CN215405610U CN202120286536.XU CN202120286536U CN215405610U CN 215405610 U CN215405610 U CN 215405610U CN 202120286536 U CN202120286536 U CN 202120286536U CN 215405610 U CN215405610 U CN 215405610U
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Abstract
The utility model provides a temporary buttress structure for pushing a steel box girder, which comprises a LY (Linear)1‑LZ1、LY2‑LZ2……LYn‑LZnAnd each group of temporary buttresses comprises 2 temporary buttress units, wherein each group of temporary buttresses comprises 2 temporary buttress units, and each temporary buttress unit comprises a plurality of temporary buttress units, wherein each temporary buttress unit comprises a plurality of temporary buttress units (LY)1‑LZ1、LY2‑LZ2The temporary buttress groups are used for arranging a welding platform and a coating repairing and overhauling platform, and the other temporary buttress groups are used for supporting the pushing device and the steel box girder; the temporary buttress unit comprisesA temporary buttress unit and a second temporary buttress unit, wherein the first temporary buttress unit is arranged at the periphery of the permanent pier, and the adjacent distance between the permanent piers>And a second temporary buttress unit is arranged between the permanent piers of 60-80 m. According to the utility model, the temporary buttress is added for supporting on the basis of the original permanent pier, so that the construction risk and the construction difficulty caused by the overlarge span of the steel box girder are reduced, and the smooth proceeding of bridge pushing is ensured.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a temporary buttress structure for pushing a steel box girder.
Background
At present, in the construction of large-span bridges, steel box girders are applied more and more, and with the prevalence of steel box girder bridges, the jacking construction technology is also concerned about and deeply studied in the field of bridge construction. The pushing method construction technology is fast and convenient, labor and equipment are greatly saved, the horizontal force of the reciprocation generated by the pier body when the beam body is pushed is overcome, the displacement of the pier top can be reduced to the minimum by continuous pushing, and the construction quality of the bridge body is guaranteed.
The steel box girder incremental launching temporary buttress construction generally appears in a bridge with large span and limited site, is suitable for industrial manufacture, needs to be provided with a corresponding supporting structure for supporting a slideway and an incremental launching device required by steel box girder incremental launching, and needs to be additionally provided with a supporting structure to meet the requirement of incremental launching construction if the original permanent pier of the bridge is not enough to meet the supporting strength.
SUMMERY OF THE UTILITY MODEL
The utility model provides a temporary buttress structure for pushing a steel box girder, which is characterized in that a temporary buttress is added on the basis of an original permanent pier for supporting, so that the construction risk and the construction difficulty caused by overlarge span of the steel box girder are reduced, and the smooth pushing of the bridge is ensured.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a temporary buttress structure for pushing a steel box girder comprises a LY1-LZ1、LY2-LZ2……LYn-LZnAnd each group of temporary buttresses comprises 2 temporary buttress units, wherein each group of temporary buttresses comprises 2 temporary buttress units, and each temporary buttress unit comprises a plurality of temporary buttress units, wherein each temporary buttress unit comprises a plurality of temporary buttress units (LY)1-LZ1、LY2-LZ2The temporary buttress groups are used for arranging a welding platform and a coating repairing and overhauling platform, and the other temporary buttress groups are used for supporting the pushing device and the steel box girder;
the temporary buttress unit comprises a first temporary buttress unit and a second temporary buttress unit, the first temporary buttress unit is arranged on the periphery of the permanent buttress, and the second temporary buttress unit is arranged between the permanent piers with the adjacent distance of the permanent piers being more than 60-80 m.
Further, the first temporary buttress unit comprises four steel pipe columns A, transverse connection A and cross beams A, the steel pipe columns A are enclosed into a cube, adjacent steel pipe columns A are connected through a plurality of groups of transverse connection A, the top end of each steel pipe column A is provided with 4 spliced I-shaped steel serving as the cross beam A, and the cross beam A is used for supporting the pushing device.
Further, the second temporary buttress unit comprises four steel pipe columns B, transverse connection B and cross beams B, the four steel pipe columns B are formed in a surrounding mode to form a cube, adjacent steel pipe columns B are connected through a plurality of groups of transverse connection B, and long steel boxes are arranged at the top ends of every two steel pipe columns B in the direction in which the pushing devices are placed to serve as the cross beams B.
Furthermore, a reinforced concrete expansion foundation is arranged at the lower part of the second temporary buttress unit.
Furthermore, the second temporary buttress unit is connected with the first temporary buttress unit closest to the second temporary buttress unit through the lateral connection of the buttress units.
Further, said LY1-LZ1、LY2-LZ2A welding platform supporting device is arranged below the part between which the welding platform is arranged, the welding platform supporting device comprises more than two spans of upright post units A, and each span of upright post unit A comprises at least 4 steel pipe upright posts A; every 2 steel pipe stand A is as a set of welded platform supporting unit, is provided with horizontal contact C between the steel pipe stand A inboard among a set of welded platform supporting unit and connects, and the outside is connected with bracing A, and bracing A's outer end is connected with welded platform.
Further, said LY1-LZ1、LY2-LZ2A coating repair platform supporting device is arranged below the part provided with the coating repair platform, the coating repair platform supporting device comprises two or more than two vertical column units B, and each vertical column unit B comprises at least 6 steel pipesEvery 3 steel pipe stand B of stand B, as a set of repair coating maintenance platform supporting unit, be provided with the horizontal connection D between the steel pipe stand B inboard in a set of repair coating maintenance platform supporting unit and connect, the outside is connected with bracing B, and bracing B's outer end is connected with the repair coating maintenance platform.
The temporary buttress structure for pushing the steel box girder is characterized in that each component in the temporary buttress is pre-processed and manufactured by special equipment in a specialized factory, is not limited by seasons, is high in processing and manufacturing speed and precision, and easy to control quality, so that the supporting strength of the pushing device and the steel box girder can be ensured by combining a permanent pier better, and the construction safety is ensured.
According to the utility model, the second temporary buttress unit is arranged between the permanent piers with the adjacent distance of more than 60-80 m, so that a temporary supporting structure can be added between the permanent piers with large span, and the problem of large pushing span is solved, thereby reducing the risk and difficulty of construction, ensuring the smooth construction, and better controlling the line type of the bridge.
Drawings
Fig. 1 is a schematic view of the arrangement of temporary piers (left panel).
Fig. 2 is a front view structural schematic diagram of the first temporary pier unit.
Fig. 3 is a left side view of the structure of fig. 2.
Fig. 4 is a front view structural schematic diagram of the second temporary pier unit.
Fig. 5 is a left side view of the structure of fig. 4.
Fig. 6 is a cross-sectional structural diagram of the welding platform supporting device.
FIG. 7 is a cross-sectional structural schematic view of the repainting maintenance platform support device.
FIG. 8 is a schematic longitudinal section structure view of the support device of the repair coating maintenance platform.
LY2-LZ2Assembling temporary buttresses 1, LY3-LZ3Set of temporary piers 2, LY4-LZ4Set of temporary piers 3, LY5-LZ5Set of temporary buttresses 4, LY6-LZ6Set of temporary buttresses 5, LY7-LZ7Set of temporary abutments 6, LY8-LZ8The temporary buttress group 7, the buttress unit transverse connection 8, the steel box girder 9, the steel pipe column A10, the transverse connection A11, the beam A12, the steel box pad beam A13, the pushing device 14, the steel pipe column B15, the transverse connection B16, the beam B17, the steel box pad beam B18, the reinforced concrete enlarged foundation 19, the inclined strut A20, the steel pipe column A21, the transverse connection C22, the welding platform 23, the slideway 24, the transverse connection D25, the steel pipe column B26, the inclined strut B27 and the repair coating maintenance platform 28.
Detailed Description
The present invention is further illustrated by the following specific examples, but the scope of the present invention is not limited to the following examples.
A temporary buttress structure for pushing a steel box girder comprises a LY1-LZ1、LY2-LZ2……LYn-LZnThe temporary buttresses are set, 8 groups of temporary buttresses are provided in the embodiment, 7 groups are shown in fig. 1, specifically LY1-LZ1Assembling temporary buttresses, LY2-LZ2Group temporary buttress 1, LY3-LZ3Group temporary buttress 2, LY4-LZ4Group temporary buttress 3, LY5-LZ5Group temporary buttress 4, LY6-LZ6Group of temporary buttresses 5, LY7-LZ7Group of temporary buttresses 6, LY8-LZ8Temporary buttresses 7 are grouped, each group of temporary buttresses comprising 2 temporary buttress units, LY1-LZ1、LY2-LZ2The temporary buttresses are used for arranging the welding platform 23 and the coating repair platform 28, and the other temporary buttresses are used for supporting the pushing devices 14 and the steel box girder 9. The temporary buttress unit comprises a first temporary buttress unit and a second temporary buttress unit, wherein the first temporary buttress unit is arranged at the periphery of the permanent pier of the bridge, and the adjacent distance between the permanent piers is>A second temporary buttress unit is arranged between the permanent piers of 60-80 m, and the adjacent distance between the permanent piers is selected according to the bridge span and the weight of the steel box girder of the embodiment>A second temporary pier unit is arranged between the permanent piers of 75m, wherein, LY4-LZ4Group of temporary piers 3 and LY6-LZ6The temporary buttresses 5 all compriseTwo second temporary buttress units.
Further, as shown in fig. 2 and 3, the first temporary buttress unit includes four steel pipe columns a10, transverse connection a11 and cross beams a12, the steel pipe columns a10 are arranged to form a cube, adjacent steel pipe columns a10 are connected by a plurality of groups of transverse connection a11, the top end of each steel pipe column a10 is provided with 4 pieces of I45I-shaped steel as the cross beam a12, and the cross beam a12 is used for supporting the thruster 14, specifically: one end of the beam A12 is connected with a pier body embedded part of the permanent pier in a welding mode and is used for supporting the pushing device 14, 2 layers of steel box filler beams A13 are placed on the top of the beam A12, and a poly tetra ethylene hard plastic plate is placed on the top surface of the steel box filler beam A13 and is used for placing the steel box girder 9. In order to facilitate the connection of the beam A12 and the pier body embedded part, the two beams A12 along the direction of the placement of the jacking device 14 are not connected, and a space is reserved between the two beams A12, and the beam A12 utilizes the supporting force of the pier body embedded part, so that the beam A12 can meet the requirement of supporting the jacking device 14. For the transverse connection A11, steel pipes with the diameter of 325 multiplied by 6mm are adopted for transverse connection, and steel pipes with the diameter of 325 multiplied by 6mm are adopted for vertical and oblique connection by adopting 10 channel steel.
Further, as shown in fig. 4 and 5, the second temporary buttress unit includes four steel pipe columns B15, transverse connection B16 and cross beams B17, the steel pipe columns B15 are arranged to form a cube, the adjacent steel pipe columns B15 are connected by a plurality of groups of transverse connection B16, and an elongated steel box is arranged at the top end of each two steel pipe columns B15 along the direction of placing the thruster 14 as a cross beam B17 for supporting the thruster 14. The single side of the pushing device 14 is placed on the cross beam B17 in the center, the steel box pad beams B18 are placed on the two sides of the longitudinal beam, and the top surface of the steel box pad beam B18 is provided with a poly tetra ethyl ethylene hard plastic plate for placing the steel box beam 9. Since the beam B17 cannot support the permanent pier, the long steel box is required to support the pushing device 14 integrally, so as to ensure the pushing safety. For the transverse connection B16, steel pipes with the diameter of 325 multiplied by 6mm are adopted for transverse connection, and steel pipes with the diameter of 325 multiplied by 6mm are adopted for vertical and oblique connection by adopting 10 channel steel. Further, in order to secure the stability of the second temporary pier unit, a reinforced concrete enlarged foundation 19 is provided at the lower portion of the second temporary pier unit.
In order to better ensure the stability and safety of the second temporary buttress unit, as shown in fig. 1, the second temporary buttress unit is connected with the first temporary buttress unit which is closest to the second temporary buttress unit through the lateral connection of the buttress units.
Further, LY1-LZ1、LY2-LZ2A welding platform supporting device is arranged below the part between which the welding platform 23 is arranged, the welding platform 23 supporting device comprises more than two-span upright post units A, the embodiment is totally provided with 5 spans, and as shown in the combined figure 6, each span upright post unit A comprises at least 4 steel pipe upright posts A21, and the steel pipe upright posts A21 are erected by adopting phi 630 × 10mm steel pipes; every 2 steel pipe stands A21 are as a set of welded platform support unit, and the steel pipe stand A21 in a set of welded platform support unit is provided with horizontal connection C22 between the inboard and is connected, and the outside is connected with bracing A20, and the outer end and the welded platform 23 of bracing A20 are connected. For the transverse connection C22, transverse connection is performed by adopting I20 channel steel, and oblique connection is performed between two ends of I20 channel steel by adopting 14 channel steel. The slideway 24 is arranged on the welding platform 23, and the arrangement position of the steel pipe upright A21 corresponds to the position right below the slideway 24.
Further, as shown in fig. 7 and 8, a repair coating maintenance platform 28, LY, is arranged behind the welding platform 231-LZ1、LY2-LZ2Install the repair coating and overhaul platform strutting arrangement below the part that sets up repair coating and overhaul platform 28 between, repair coating and overhaul platform strutting arrangement is including two stand unit B that stride more than, this embodiment is provided with 3 strides, every is striden stand unit B and is including 6 at least steel pipe stand B26, every 3 steel pipe stand B26 scribbles as a set of repair coating and overhaul platform 28 supporting unit, it connects to be provided with horizontal contact D25 between the steel pipe stand B26 inboard in a set of repair coating and overhaul platform 28 supporting unit, the outside is connected with bracing B27, bracing B27's outer end and repair coating and overhaul platform 28 are connected. Steel pipe stand B26 adopts the 630 mm by 10mm steel pipe of phi to set up, to horizontal connection D25, including adopting I20 channel-section steel to carry out transverse connection, adopts and carries out the slant between I20 channel-section steel both ends and connects, and the steel pipe stand is located on the bar basis. The repair coating maintenance platform 28 comprises repair coating maintenance platform beams and repair coating maintenance platform distributionThe steel tube repairing platform comprises beams and pattern steel plates, I56a double-spliced I-shaped steel serving as a repair coating maintenance platform beam is arranged at the top of a steel tube upright post B26, I20 channel steel distribution beams are arranged in other areas except a slideway 24 area, and the pattern steel plates of 6mm are fully paved above the distribution beams. A second temporary buttress unit may be provided below the location where the welding platform 23 and the repair coating overhaul platform 28 are connected to support the thrusters 14, the second temporary buttress unit, the column unit B, LY2-LZ2The transverse connection strengthening connection can be arranged between the two parts according to the requirement.
This implementation can increase interim supporting construction between the permanent mound that the span is big through the combination of first interim buttress unit and the interim buttress unit of second, solves the problem that the top pushes away the span is big to reduce the risk and the degree of difficulty of construction, guarantee going on smoothly of construction, the line type of control bridge that simultaneously can be better.
Claims (7)
1. A temporary buttress structure for pushing a steel box girder comprises a LY1-LZ1、LY2-LZ2……LYn-LZnOrganize interim buttress, every group interim buttress includes 2 interim buttress units, its characterized in that:
LY1-LZ1、LY2-LZ2the temporary buttress groups are used for arranging a welding platform and a coating repairing and overhauling platform, and the other temporary buttress groups are used for supporting the pushing device and the steel box girder;
the temporary buttress unit comprises a first temporary buttress unit and a second temporary buttress unit, the first temporary buttress unit is arranged on the periphery of the permanent buttress, and the second temporary buttress unit is arranged between the permanent piers with the adjacent distance of the permanent piers being more than 60-80 m.
2. The steel box girder incremental launching temporary buttress structure as claimed in claim 1, wherein:
the first temporary buttress unit comprises four steel pipe columns A, transverse connection A and cross beams A, the steel pipe columns A are enclosed into a cube, adjacent steel pipe columns A are connected through a plurality of groups of transverse connection A, the top end of each steel pipe column A is provided with 4 spliced I-shaped steel serving as the cross beam A, and the cross beam A is used for supporting the pushing device.
3. The steel box girder incremental launching temporary buttress structure as claimed in claim 1, wherein:
the second temporary buttress unit comprises four steel pipe columns B, transverse connection B and cross beams B, the steel pipe columns B are enclosed into a cube, adjacent steel pipe columns B are connected through a plurality of groups of transverse connection B, and elongated steel boxes are arranged at the top ends of every two steel pipe columns B in the direction in which the pushing devices are placed and serve as the cross beams B.
4. The steel box girder pushing temporary buttress structure for steel box girder pushing according to claim 3, wherein:
and a reinforced concrete expansion foundation is arranged at the lower part of the second temporary buttress unit.
5. The temporary buttress structure for steel box girder jacking according to claim 1,
and the second temporary buttress unit is connected with the first temporary buttress unit closest to the second temporary buttress unit through the lateral connection of the buttress units.
6. The steel box girder incremental launching temporary buttress structure as claimed in claim 1, wherein:
the LY1-LZ1、LY2-LZ2A welding platform supporting device is arranged below the part between which the welding platform is arranged, the welding platform supporting device comprises more than two spans of upright post units A, and each span of upright post unit A comprises at least 4 steel pipe upright posts A; every 2 steel pipe stand A is as a set of welded platform supporting unit, is provided with horizontal contact C between the steel pipe stand A inboard among a set of welded platform supporting unit and connects, and the outside is connected with bracing A, and bracing A's outer end is connected with welded platform.
7. The steel box girder incremental launching temporary buttress structure as claimed in claim 1, wherein:
the LY1-LZ1、LY2-LZ2Install the repair below the part that sets up the repair coating and overhaul the platform and overhaul platform strutting arrangement, repair coating and overhaul platform strutting arrangement and including two stand unit B that stride more than, every is striden stand unit B including 6 at least steel pipe stand B, every 3 steel pipe stand B is scribbled as a set of repair and overhaul platform supporting unit, it connects to be provided with horizontal contact D between the steel pipe stand B inboard in the maintenance platform supporting unit to scribble a set of repair, the outside is connected with bracing B, bracing B's outer end and repair coating are overhauld the platform and are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120286536.XU CN215405610U (en) | 2021-02-02 | 2021-02-02 | Steel case roof beam pushes away uses interim buttress structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120286536.XU CN215405610U (en) | 2021-02-02 | 2021-02-02 | Steel case roof beam pushes away uses interim buttress structure |
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| Publication Number | Publication Date |
|---|---|
| CN215405610U true CN215405610U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120286536.XU Active CN215405610U (en) | 2021-02-02 | 2021-02-02 | Steel case roof beam pushes away uses interim buttress structure |
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| Country | Link |
|---|---|
| CN (1) | CN215405610U (en) |
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2021
- 2021-02-02 CN CN202120286536.XU patent/CN215405610U/en active Active
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