CN212956615U - Cover and dig accurate positioning platform of reverse construction method steel pipe center pillar based on BIM - Google Patents
Cover and dig accurate positioning platform of reverse construction method steel pipe center pillar based on BIM Download PDFInfo
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- CN212956615U CN212956615U CN202021300483.4U CN202021300483U CN212956615U CN 212956615 U CN212956615 U CN 212956615U CN 202021300483 U CN202021300483 U CN 202021300483U CN 212956615 U CN212956615 U CN 212956615U
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Abstract
The utility model provides a lid digs accurate positioning platform of reverse construction method steel pipe center pillar based on BIM, including steel sheet and base, the square structure of steel sheet, the upper end of steel sheet distributes along circumference and is fixed with the lug, and the screw rod hole has been seted up respectively to the four corners department of steel sheet, and the downthehole leveling screw rod that link up the steel sheet that all revolves is equipped with of screw rod, and the bottom of leveling screw rod is provided with the base, on the lower extreme of leveling screw rod all was fixed in the base, the downside that lies in the steel sheet on the leveling screw rod still revolves and is equipped with the leveling nut, the stand hole has been seted up at the middle part of steel sheet, has still seted up on the steel sheet in the stand hole outside and has reserved pipe hole. The problems that the construction positioning precision of the existing steel pipe middle stand column construction is greatly influenced by manpower, the controllability is poor, the verticality is easy to have large deviation, the cost is high, the design and standard requirements cannot be well met and the like are solved. Belongs to the field of building engineering.
Description
Technical Field
The utility model relates to a lid digs reverse construction method steel pipe center pillar accurate positioning platform based on BIM, specially adapted city track lid digs reverse construction method steel pipe center pillar accurate location, belongs to the building engineering field.
Background
At present, in the construction of steel pipe columns in China, a hydraulic full-rotation casing machine vertical insertion construction method and a static pressure pipe forming machine insertion construction method are generally adopted, when a middle upright column of a steel pipe is constructed, a sensor is mainly mounted on a tool pipe to control the verticality of the steel pipe column, and the method has the following defects: 1. the construction process needs to be improved; 2. the construction positioning precision is greatly influenced by manpower; 3. the controllability is poor, and the verticality is easy to have larger deviation; 4. the cost is high and the design and specification requirements cannot be well met.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lid digs accurate positioning platform of reverse construction method steel pipe center pillar based on BIM to the construction positioning accuracy who exists in the construction of solving present steel pipe center pillar receives artifical the influence great, and the controllability is poor, and great deviation easily appears in the straightness that hangs down, and the cost is higher, and can not satisfy design and standard requirement scheduling problem well.
In order to realize the purpose, the BIM-based steel pipe center pillar accurate positioning platform adopting the cover-excavation reverse construction method comprises a steel plate and a base, wherein the steel plate is of a square structure, lifting lugs are distributed and fixed at the upper end of the steel plate along the circumferential direction, screw rod holes are respectively formed at the four corners of the steel plate, leveling screw rods penetrating through the steel plate are screwed in the screw rod holes, the base is arranged at the bottom of each leveling screw rod, the lower ends of the leveling screw rods are all fixed on the base, leveling nuts are also screwed on the leveling screw rods and positioned at the lower sides of the steel plates, the steel plate is characterized in that a stand column hole is formed in the middle of the steel plate, a reserved guide pipe hole is formed in the steel plate outside the stand column hole, stand column positioning screw mechanisms are further distributed and fixed on the steel plate along the circumferential direction of the stand column hole and comprise guide blocks fixed on the steel plate, threaded holes pointing to the center of the stand column hole are formed in the guide blocks, and positioning screws are screwed in the threaded holes.
In the positioning platform, the base is a square steel plate, and positioning reinforcing steel bar holes are formed in four corners of the base and are fixedly connected with the ground through reinforcing steel bars;
among the aforementioned locating platform, the four sides department of steel sheet bottom has the I-steel along circumference welded fastening in proper order, the leveling screw rod runs through I-steel and steel sheet along vertical in proper order, and the equal threaded connection of leveling screw rod and I-steel and steel sheet to improve the structure steadiness.
Compared with the traditional positioning method, the utility model has the characteristics of the small and exquisite light, easy operation, the safe quality is controllable, practice thrift construction cost of location platform design, effectively improved the construction precision and the construction progress of urban rail steel pipe center pillar engineering, practiced thrift project construction administrative cost, have been in the successful application of a plurality of projects to better economic benefits has been gained, provide important guide significance to improving the accurate location of lid excavation reverse construction method steel pipe center pillar.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
To further clarify the objects, technical solutions and advantages of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings.
Examples
Referring to fig. 1, the embodiment provides a precise positioning platform for a steel pipe center pillar in a cover-excavation reverse construction method based on BIM, which includes a steel plate 1 and a base 2, the steel plate 1 is a 2252mm square structure, lifting lugs 8 are distributed and fixed on the upper end of the steel plate 1 along the circumferential direction, screw holes are respectively formed at four corners of the steel plate 1, leveling screws 4 penetrating through the steel plate 1 are screwed in the screw holes, 4I-beams 3 of I20 are sequentially welded and fixed on four sides of the bottom of the steel plate 1 along the circumferential direction, the leveling screws 4 sequentially penetrate through the I-beams 3 and the steel plate 1 along the vertical direction, the leveling screws 4 are in threaded connection with the I-beams 3 and the steel plate 1, so as to improve the structural stability, the base 2 is arranged at the bottom of the leveling screws 4, the base 2 is a 400mm square steel plate, positioning reinforcing steel bar holes 21 with a diameter of 22mm are formed at four corners of the base 2, and are connected and, the lower extreme of leveling screw 4 all is fixed in on base 2, and the downside that lies in steel sheet 1 on the leveling screw 4 still revolves and is equipped with the leveling nut, 1060mm diameter's stand hole 11 has been seted up at the middle part of steel sheet 1, has still seted up reserved pipe hole 12 on the steel sheet 1 in the stand hole 11 outside, and still the circumference along stand hole 11 on the steel sheet 1 distributes and is fixed with stand positioning screw mechanism, and stand positioning screw mechanism is including being fixed in the guide block 6 on the steel sheet 1, sets up the screw hole at directional stand hole 11 center on the guide block 6, and the screw inslot revolves and is equipped with positioning screw 7.
The installation method comprises the following steps:
firstly, the positioning platform is installed by matching with a crane. And carrying out plane positioning according to the pile position cross control line on the hardened terrace.
Secondly, the flatness of the positioning platform is adjusted according to the principle of fine leveling of the level meter, and the flatness is adjusted through the leveling screw rod 4, so that the deviation is ensured to be less than 2 mm.
And thirdly, after the plane position and the horizontal height are adjusted, the four bases 2 of the platform are fixed in the hard terrace through expansion bolts so as to increase the stability of the positioning platform.
Considering that the maximum depth from the top of the steel pipe column to the ground is 4-5 m, arranging a tool pipe from the top of the column to the ground, and connecting the tool pipe and the steel pipe column by using 12 high-strength bolts, wherein the length of the tool pipe is 8 m.
Steel pipe column hoisting and positioning
When the steel pipe column is machined, the light reflecting paste is placed at the bottom of the steel pipe column in advance and used for detecting the perpendicularity of the steel pipe column after the steel pipe column is installed. The steel pipe middle upright post is hoisted slowly, lightly and straightly, and holes are slowly drilled into the upright post holes 11 of the positioning platform. When the steel pipe is inserted into the hole, special attention should be paid to avoid the steel pipe center pillar from colliding the platform as much as possible. After the steel pipe column is hung and arranged in the positioner, the tool pipe is fixed after the perpendicularity of the steel pipe center pillar is adjusted by utilizing 4 positioning screws 7 on the positioning platform, the steel pipe column is ensured to be in a perpendicular state, and the top end of the steel pipe column is positioned. After the locator is put into in the steel-pipe column hoist and mount, fix out stake position central point through the total powerstation to hang the plummet, remove the steel-pipe column through 4 horizontal screw rods on the novel positioning platform, after hanging plumbous hammer point and the coincidence of location reflector panel center, use laser plummet to hang the straightness and go on retesting to the steel-pipe column, fix the instrument pipe after retesting qualified.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides a lid digs accurate positioning platform of reverse construction method steel pipe center pillar based on BIM which characterized in that: the steel plate comprises a steel plate (1) and a base (2), wherein the steel plate (1) is of a square structure, lifting lugs (8) are fixedly distributed at the upper end of the steel plate (1) along the circumferential direction, screw holes are respectively formed in the four corners of the steel plate (1), leveling screws (4) penetrating through the steel plate (1) are arranged in the screw holes in a rotating mode, the base (2) is arranged at the bottoms of the leveling screws (4), the lower ends of the leveling screws (4) are fixed on the base (2), leveling nuts are further arranged on the leveling screws (4) on the lower side of the steel plate (1) in a rotating mode, a stand column hole (11) is formed in the middle of the steel plate (1), a reserved guide pipe hole (12) is further formed in the steel plate (1) outside the stand column hole (11), stand column positioning screw mechanisms are further fixedly distributed on the steel plate (1) along the circumferential direction of the stand column hole (11), and comprise guide blocks, a threaded hole pointing to the center of the upright post hole (11) is formed in the guide block (6), and a positioning screw rod (7) is screwed in the threaded hole.
2. The BIM-based cover-excavation reverse-construction steel pipe center pillar accurate positioning platform of claim 1, which is characterized in that: the base (2) is a square steel plate, and positioning reinforcing steel bar holes (21) are formed in four corners of the base (2) and are fixedly connected with the ground through reinforcing steel bars.
3. The BIM-based cover-excavation reverse-construction steel pipe center pillar accurate positioning platform of claim 2, wherein: four sides department of steel sheet (1) bottom is welded fastening has I-steel (3) along circumference in proper order, leveling screw (4) are along vertical I-steel (3) and steel sheet (1) run through in proper order, and leveling screw (4) and I-steel (3) and the equal threaded connection of steel sheet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021300483.4U CN212956615U (en) | 2020-07-06 | 2020-07-06 | Cover and dig accurate positioning platform of reverse construction method steel pipe center pillar based on BIM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021300483.4U CN212956615U (en) | 2020-07-06 | 2020-07-06 | Cover and dig accurate positioning platform of reverse construction method steel pipe center pillar based on BIM |
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| Publication Number | Publication Date |
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| CN212956615U true CN212956615U (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021300483.4U Active CN212956615U (en) | 2020-07-06 | 2020-07-06 | Cover and dig accurate positioning platform of reverse construction method steel pipe center pillar based on BIM |
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| CN (1) | CN212956615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481861A (en) * | 2021-07-21 | 2021-10-08 | 中铁七局集团有限公司 | Centering support for assisting installation and positioning of steel pipe column |
-
2020
- 2020-07-06 CN CN202021300483.4U patent/CN212956615U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481861A (en) * | 2021-07-21 | 2021-10-08 | 中铁七局集团有限公司 | Centering support for assisting installation and positioning of steel pipe column |
| CN113481861B (en) * | 2021-07-21 | 2022-09-02 | 中铁七局集团有限公司 | Centering support for assisting installation and positioning of steel pipe column |
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