CN215252235U - Support for cast-in-situ box girder - Google Patents
Support for cast-in-situ box girder Download PDFInfo
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- CN215252235U CN215252235U CN202120340711.9U CN202120340711U CN215252235U CN 215252235 U CN215252235 U CN 215252235U CN 202120340711 U CN202120340711 U CN 202120340711U CN 215252235 U CN215252235 U CN 215252235U
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Abstract
The utility model discloses a support for cast-in-place box girder, including pile foundation, crossbeam, support frame and bailey frame, bailey frame supports on the support frame to the strong point is located bailey frame's web member department, and the support frame is established on the crossbeam, and the crossbeam is established in the upper end of pile foundation, and the lower extreme of pile foundation stretches into in the ground. According to the support, through the adjustment of the pile top cross beam, the supporting stress point of the Bailey truss can be accurately located at the position of the web member, so that the problem that the local stress of the Bailey truss is overlarge and cannot meet the requirement is solved, and the defect that the supporting point cannot be located at the web member of the Bailey truss due to the fact that the position of a steel pipe pile shifts and the position of the whole support moves is overcome; compared with the traditional field bracket installation and welding, the installation time is saved, the device can be disassembled for multiple times, and is more economical and reasonable.
Description
Technical Field
The utility model relates to a cast-in-place box girder construction field specifically is a support that relates to a cast-in-place box girder.
Background
The Bailey beam type support is widely applied to a cast-in-place box beam, but the lower structure of the whole support adopts the pipe piles same as the foundation to carry out welding construction on site, so that the high-altitude operation amount is large, the field welding difficulty is large, the installation speed is low, and the construction safety cannot be guaranteed. Simultaneously in case the basis location is inaccurate or because geological reason has adjusted the position, then the top crossbeam can not be accurate to be located bailey truss web member position, causes the support to collapse because bailey truss local unstability under the load effect. The mine beam type support is used for a cast-in-place concrete box girder construction system, the Bailey frames serve as main stress components, and the Bailey frames are often not located at web members because cross beams supporting the Bailey frames in the construction process, so that the Bailey frames are locally unstable due to overlarge shearing force. The skew of crossbeam position often is because steel-pipe pile basis location is inaccurate or because the geological reason needs the adjustment tubular pile position, in case the tubular pile off normal, the lower part support also with skew together for bailey frame supporting beam is not located web member department. Meanwhile, when the lower support is installed on the site, a large amount of overhead welding operation exists, the construction risk is extremely high, a large amount of materials are piled and loaded on the site, the safe and civilized construction is not facilitated, a large amount of construction sites on the site are occupied, and the construction is more facilitated for a small area of the construction site.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide a support for a cast-in-place box girder with good supporting effect.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides a support for cast-in-place box girder, includes pile foundation, crossbeam, support frame and bailey frame, and bailey frame supports on the support frame to the strong point is located bailey frame's web member department, and the support frame is established on the crossbeam, and the crossbeam is established in the upper end of pile foundation, and the lower extreme of pile foundation stretches into in the ground.
Furthermore, the pile foundation comprises four tubular columns, the number of the cross beams is two, one of the cross beams is located in the limiting fixing grooves in the top surfaces of the two tubular columns, the other cross beam is located in the limiting fixing grooves in the top surfaces of the other two tubular columns, and the two cross beams are parallel to each other.
Furthermore, the support frame comprises four steel pipe columns, a plurality of transverse steel pipes, a plurality of oblique steel pipes and a plurality of stiffening plates, the plurality of stiffening plates are welded with the steel pipe columns and are distributed from one end of each steel pipe column to the other end of each steel pipe column at intervals, the plurality of transverse steel pipes are located between two adjacent steel pipe columns and are distributed from top to bottom at intervals, one end of each transverse steel pipe is welded with the stiffening plate on one of the two adjacent steel pipe columns, the other end of each transverse steel pipe is welded with the stiffening plate on the other of the two adjacent steel pipe columns, the oblique steel pipes are arranged between the two adjacent transverse steel pipes in the two adjacent steel pipe columns, the two ends of each oblique steel pipe are respectively welded with the stiffening plates on the two adjacent steel pipe columns, and the four steel pipe columns, the plurality of transverse steel pipes, the plurality of oblique steel pipes and the plurality of stiffening plates form a square lattice structure.
Furthermore, the upper end and the lower end of each of the four steel pipe columns in the support frame are respectively provided with an upper flange plate and a lower flange plate, and the upper flange plate and the lower flange plate are respectively connected with the Bailey frames and the cross beams through bolts.
Furthermore, the cross beam is made of 40-size I-steel.
Furthermore, the depth of the limiting fixing groove is 30cm, and the width of the limiting fixing groove is 30 cm.
Furthermore, the outer diameter of the steel pipe column is 426mm, and the wall thickness is 6 mm.
Further, the outer diameter of the horizontal steel pipe and the oblique steel pipe is 114mm, and the wall thickness is 4 mm.
Further, the stiffening plate is a steel plate with the thickness of 12 mm.
Furthermore, four tubular columns of the pile foundation are steel pipes with the outer diameter of 620 mm.
The beneficial effects of the utility model reside in that:
1. according to the support, through the adjustment of the pile top cross beam, the supporting stress point of the Bailey truss can be accurately located at the position of the web member, the supporting force is stronger, the problem that the Bailey truss is overlarge in local stress and cannot meet the requirement is solved, and the defect that the supporting point cannot be located at the web member of the Bailey truss due to the fact that the position of a steel pipe pile shifts and the whole support moves is overcome;
2. the support frame adopts the processed and formed latticed column and the bent frame, and is formed before hoisting, so that the support frame can be integrally hoisted and installed and is connected with other components through bolts, the installation time is saved compared with the traditional field bracket installation and welding, the support frame can be disassembled for use repeatedly, and the support frame is more economical and reasonable; in addition, the integral installation can avoid the welding of the support frame at high altitude, and has higher safety guarantee;
3. the construction cost is saved, the construction speed is high, the construction site is neat, and the requirements of green construction and civilized construction are met.
Drawings
The invention will be further explained with the aid of the accompanying drawings, in which, however, the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, without inventive step, further drawings can be obtained in accordance with the following drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the pile foundation shown in FIG. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic structural view of the supporting frame shown in FIG. 1;
FIG. 5 is a side view of FIG. 4;
fig. 6 is a top view of fig. 4.
In the figure: 1. a pile foundation; 2. A cross beam; 3. A support frame; 4. A bailey frame; 5. A web member; 6. a ground surface; 7. a pipe string; 8. a limiting fixing groove; 9. steel pipe columns; 10. a horizontal steel pipe; 11. an inclined steel pipe; 12. a stiffening plate; 13. an upper flange plate; 14. and (5) a lower flange plate.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward", "reverse", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1, a support for cast-in-place box girder, including pile foundation 1, crossbeam 2, support frame 3 and bailey truss 4, bailey truss 4 supports on support frame 3 to the strong point is located bailey truss 4's web member 5 department, and support frame 3 establishes on crossbeam 2, and crossbeam 2 establishes in the upper end of pile foundation 1, and the lower extreme of pile foundation 1 stretches into in the ground 6.
As shown in fig. 2 and 3, the pile foundation 1 includes four pipe columns 7, two cross beams 2 are provided, one of the cross beams 2 is located in the position-limiting fixing groove 8 on the top surfaces of two of the pipe columns 7, the other cross beam 2 is located in the position-limiting fixing groove 8 on the top surfaces of the other two pipe columns, and the two cross beams 2 are parallel to each other.
As shown in fig. 4, 5, and 6, the support frame 3 includes four steel pipe columns 9 and a plurality of horizontal steel pipes 10, a plurality of diagonal steel pipes 11, and a plurality of stiffening plates 12, the plurality of stiffening plates 12 are welded to the steel pipe columns 9 and are spaced from one end to the other end of the steel pipe columns 9, the plurality of horizontal steel pipes 10 are located between two adjacent steel pipe columns and are spaced from top to bottom, one end of each horizontal steel pipe 10 is welded to the stiffening plate 12 on one of the two adjacent steel pipe columns 9, the other end of each horizontal steel pipe is welded to the stiffening plate 12 on the other of the two adjacent steel pipe columns, the diagonal steel pipes 11 are located between the two adjacent horizontal steel pipes in the two adjacent steel pipe columns 9, both ends of each diagonal steel pipe 11 are respectively welded to the stiffening plates 12 on the two adjacent steel pipe columns, and the four steel pipe columns, the plurality of horizontal steel pipes, the plurality of diagonal steel pipes, and the plurality of stiffening plates form a square lattice structure. The upper end and the lower end of four steel pipe columns 9 in the support frame are respectively provided with an upper flange 13 and a lower flange 14, and the upper flange 13 and the lower flange 14 are respectively connected with the Bailey frames 4 and the cross beam 2 through bolts.
The construction method of the support for the cast-in-place box girder comprises the following steps:
building a support frame: i, component manufacturing: cutting the thicker steel pipes according to the designed length to manufacture a plurality of steel pipe columns; cutting the thinner steel pipe according to the designed length to manufacture a plurality of transverse steel pipes and inclined steel pipes; cutting the steel plate according to the designed length to manufacture a plurality of stiffening plates; II, welding the stiffening plate and the flange plate: respectively welding an upper flange plate and a lower flange plate at the upper end and the lower end of the steel pipe column; welding the stiffening plates on the outer wall of the steel pipe column, arranging a plurality of stiffening plates on the steel pipe column into two rows, wherein the plane where one row of stiffening plates is located is vertical to the plane where the other row of stiffening plates is located, and the axis of the steel pipe column is simultaneously located on the plane where the two rows of stiffening plates are located; III, single-side welding: taking two steel pipe columns welded with stiffening plates and flange plates, horizontally placing the two steel pipe columns on the ground to keep the two steel pipe columns parallel, welding two ends of a transverse steel pipe on the stiffening plates corresponding to the two steel pipe columns, and then welding an inclined steel pipe to form a single-sided framework; IV, welding corresponding to a single surface: according to the method of the step III, assembling and welding the corresponding single surface; v, assembling and welding: welding the single surface manufactured in the step III and the corresponding single surface manufactured in the step IV by using a transverse steel pipe and an inclined steel pipe to manufacture a support frame; and manufacturing a plurality of support frames for later use.
Pile foundation construction: releasing the actual position of the tubular pile according to the coordinates of the pile foundation, using a steel tube pile driver and a 90-degree vibration hammer to execute four vertical tubular piles of the pile foundation according to the designed depth, measuring the elevation of the top of the tubular pile after the tubular pile is vibrated, cutting off the redundant length according to the designed elevation, opening a limiting fixing groove at the top of the tubular pile after the cutting off, and constructing a plurality of pile foundations according to the method;
mounting a cross beam: hoisting the assembled double-spliced I-steel and placing the assembled double-spliced I-steel into a limiting fixing groove, then releasing the accurate position of a bailey truss web member on the I-steel, and forming a bolt hole on the installed I-steel;
hoisting the support frame: hoisting the support frame to a determined position by using a crane, aligning bolt holes on a lower flange plate at the bottom of the support frame with bolt holes on the cross beam, and then connecting by adopting high-strength bolts;
installation of adjacent pile foundations: according to the steps C to D, the installation of the cross beam and the support frame is completed on the adjacent pile foundations;
hoisting the bailey frames: the bailey frames are hoisted to the supporting frames of two adjacent pile foundations by utilizing the crane, and the supporting points are positioned at web members of the bailey frames by adjusting the positions of the supporting frames on the pile foundations, so that the construction and installation of the support of the cast-in-place box girder are completed, wherein the crane adopts a locomotive type crane.
In this embodiment, the crossbeam adopts 40 # I-steel, and the degree of depth of spacing fixed slot is 30cm, and the width is 30 cm. The outer diameter of the steel pipe column is 426mm, and the wall thickness is 6 mm; the outer diameter of the horizontal steel pipe and the inclined steel pipe is 114mm, and the wall thickness is 4 mm; the stiffening plate is a steel plate with the thickness of 12 mm. Four tubular columns of the pile foundation are steel pipes with the outer diameter of 620 mm.
The working principle is as follows: the improved support does not need to be subjected to a large amount of welding construction at high altitude on site in integral hoisting operation, meanwhile, a pile top beam is additionally arranged for solving the problem caused by the deviation of the pile foundation pipe column, the support frame is connected with the beam through bolts, and after the pile foundation pipe column deviates, the support frame can be moved on the beam to determine the accurate position.
Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a support for cast-in-place case roof beam which characterized in that: including pile foundation, crossbeam, support frame and bailey frame, bailey frame supports on the support frame to the strong point is located bailey frame's web member department, and the support frame is established on the crossbeam, and the crossbeam is established in the upper end of pile foundation, and the lower extreme of pile foundation stretches into in the ground.
2. The support for a cast-in-place box beam as claimed in claim 1, wherein: the pile foundation includes four tubular columns, the crossbeam is equipped with two, and one of them crossbeam is arranged in the spacing fixed slot on two of them tubular column top surfaces, and another crossbeam is arranged in the spacing fixed slot on two other tubular column top surfaces, two the crossbeam is parallel to each other.
3. A support for a cast in place box beam as claimed in claim 2, wherein: the support frame comprises four steel pipe columns, a plurality of transverse steel pipes, a plurality of inclined steel pipes and a plurality of stiffening plates, the plurality of stiffening plates are welded with the steel pipe columns and are distributed from one end to the other end of each steel pipe column at intervals, the plurality of transverse steel pipes are positioned between two adjacent steel pipe columns and are distributed from top to bottom at intervals, one end of each transverse steel pipe is welded with the stiffening plate on one of the two adjacent steel pipe columns, the other end of each transverse steel pipe is welded with the stiffening plate on the other of the two adjacent steel pipe columns, the inclined steel pipes are arranged between the two adjacent transverse steel pipes in the two adjacent steel pipe columns, the two ends of each inclined steel pipe are respectively welded with the stiffening plates on the two adjacent steel pipe columns, and the four steel pipe columns, the plurality of transverse steel pipes, the plurality of inclined steel pipes and the plurality of stiffening plates form a square lattice structure.
4. A support for a cast in place box beam as claimed in claim 3, wherein: the upper end and the lower end of each of the four steel pipe columns in the support frame are respectively provided with an upper flange plate and a lower flange plate, and the upper flange plate and the lower flange plate are respectively connected with the Bailey frames and the cross beams through bolts.
5. The support for a cast-in-place box beam as claimed in claim 1, wherein: the beam is made of 40-size I-steel.
6. A support for a cast in place box beam as claimed in claim 4, wherein: the depth of the limiting fixing groove is 30cm, and the width of the limiting fixing groove is 30 cm.
7. A support for a cast in situ box beam as claimed in claim 6, wherein: the outer diameter of the steel pipe column is 426mm, and the wall thickness is 6 mm.
8. A support for a cast in situ box beam as claimed in claim 7, wherein: the outer diameter of the horizontal steel pipe and the inclined steel pipe is 114mm, and the wall thickness is 4 mm.
9. The support for a cast-in-place box beam as claimed in claim 8, wherein: the stiffening plate is a steel plate with the thickness of 12 mm.
10. A support for a cast in place box beam as claimed in claim 9, wherein: four tubular columns of the pile foundation are steel pipes with the outer diameter of 620 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120340711.9U CN215252235U (en) | 2021-02-03 | 2021-02-03 | Support for cast-in-situ box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120340711.9U CN215252235U (en) | 2021-02-03 | 2021-02-03 | Support for cast-in-situ box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215252235U true CN215252235U (en) | 2021-12-21 |
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ID=79501298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120340711.9U Active CN215252235U (en) | 2021-02-03 | 2021-02-03 | Support for cast-in-situ box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215252235U (en) |
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2021
- 2021-02-03 CN CN202120340711.9U patent/CN215252235U/en active Active
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