CN212375847U - Positioning platform of foundation pit reverse construction method steel structure column - Google Patents
Positioning platform of foundation pit reverse construction method steel structure column Download PDFInfo
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- CN212375847U CN212375847U CN202020368223.4U CN202020368223U CN212375847U CN 212375847 U CN212375847 U CN 212375847U CN 202020368223 U CN202020368223 U CN 202020368223U CN 212375847 U CN212375847 U CN 212375847U
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Abstract
The utility model provides a foundation ditch reverse construction method steel constructs locating platform of post belongs to steel structure post construction equipment, it includes upper portion operation platform, lower part regulation platform, crossbeam group, adjusting device, and two calabash couple devices that set up respectively in lower part regulation platform both sides, lower part regulation platform is the rectangular frame setting, crossbeam group is including setting up four crossbeams of four sides of lower part regulation platform respectively, adjusting device includes all being equipped with at least one (the preferred condition is setting up to two) adjusting bolt on each crossbeam, adjusting bolt and crossbeam threaded connection and its tip support in steel structure post; the hoist hook device is used for fixing the elevation position of the top of the steel-structured column; the problems that the requirements on the plane central point, the top surface elevation, the axis distribution, the perpendicularity and the like of the structural steel structure column are high in the reverse construction method, the technical index requirements are difficult to meet all at one time in actual construction, and the construction control difficulty is high are solved.
Description
Technical Field
The utility model relates to a steel constructs the post construction equipment, especially relates to a foundation ditch reverse construction method steel constructs positioning platform of post.
Background
When underground buildings (structures) are designed by adopting a reverse construction method, usually, the structural columns are constructed in advance before excavation of foundation pits. When the structural column design adopted the steel structure post form, its overall structure was foundation ditch bottom for the bored concrete pile, was the steel structure post above the foundation ditch bottom, and the steel structure post inserts about 3m of bottom bored concrete pile.
In order to ensure the safety of the basement structure, the requirements of the construction by the reverse method on the plane central point, the top surface elevation, the axis distribution, the verticality and the like of the structural steel structure column are high, the technical index requirements are often difficult to meet all at one time in actual construction, and the construction control difficulty is high, so that the improvement is needed.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims at providing a foundation ditch reverse construction method steel constructs location platform of post to solve above-mentioned technical problem.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a positioning platform of a steel structure column of a foundation pit reverse construction method comprises an upper operation platform, a lower adjusting platform, a beam group, an adjusting device and two gourd hook devices which are respectively arranged on two sides of the lower adjusting platform, wherein the beam group comprises four beams which are respectively arranged on four side surfaces of the lower adjusting platform, the adjusting device comprises at least one adjusting bolt which is arranged on each beam, the adjusting bolts are in threaded connection with the beams, and the end parts of the adjusting bolts are abutted against the steel structure column; the hoist hook device is used for fixing the elevation position of the top of the steel-structured column.
Preferably, the crossbeam group vertically is provided with two sets ofly, adjusting device is equipped with two, and corresponds respectively with two crossbeam groups, and one of them adjusting device's adjusting bolt supports in the steel structure post first half, and another adjusting device's adjusting bolt supports in the steel structure post latter half.
Preferably, two adjusting bolts are arranged on each cross beam.
Preferably, the both sides of platform symmetry are adjusted to the lower part all are equipped with the link, the hoist couple device including articulate in the main of link collude, collude the vice of steel structure post and collude to and the chain, the one end of chain is connected vice and is colluded, and the other end is walked around the main and is linked together the power supply.
Preferably, the hydraulic adjusting device comprises two oil pressure grooves which are formed in four side faces of the lower adjusting platform and used for installing the jack.
Preferably, the lower adjusting platform comprises an outer frame and an inner frame which are arranged in a uniform rectangular frame and formed by connecting triangular steels, the bottom of the outer frame is connected with a supporting frame, the supporting frame is arranged in a shape like a Chinese character 'jing' formed by welding four triangular steels, and the inner frame is supported on the supporting frame;
the upper portion operation platform includes four end to end welded rectangular shape steel sheets, welds the safety barrier in every steel sheet to and pedestrian's cat ladder.
The utility model provides a pair of foundation ditch reverse construction method steel constructs positioning platform of post has following advantage:
1. the problem that appears in the construction can once only be solved, and the full aspect provides accurate location for the steel construction post. The method has the advantages of simple assembly materials, easy operation, high aging efficiency, convenient transportation and suitability for harsh construction sites. The construction problem that the position is deviated in the traditional steel structure column lowering process by the reverse construction method is effectively solved, and the construction method has good help for the construction of the permanent steel structure column with extremely high construction requirements;
2. two layers of adjusting devices are adopted, eight adjusting bolts are arranged on each layer, and errors in all directions can be adjusted at will; meanwhile, a hydraulic adjusting device is arranged, so that any deviation can be finely adjusted; in addition, the elevation is fixed by adopting two symmetrical hand-operated hoist hooks, so that the accurate positioning of the steel structure column is ensured;
3. the upper operation platform and the lower adjusting and fixing platform are both open-type operation and can be operated randomly; meanwhile, the platform has strong field adaptability, small volume, light dead weight and convenient movement;
4. the positioning platform is mainly formed by welding triangular steels of different models, and each bearing part can achieve a very firm effect through welding, so that the positioning platform is safe, convenient and efficient;
5. the structure design is simple, the manufacture and the installation are convenient, and the manufacture and the use cost are low.
Drawings
Fig. 1 is a schematic structural view of a middle positioning platform of the present invention;
FIG. 2 is a schematic structural view of the middle upper part operation platform of the present invention;
FIG. 3 is a schematic structural view of the outer frame and the supporting frame of the present invention;
fig. 4 is a schematic structural view of the inner frame of the present invention;
fig. 5 is a schematic structural view of the hoist hook device of the present invention;
FIG. 6 is a flow chart of the steel column positioning construction process.
The reference numerals in the figures are explained below:
1. an upper work platform; 101. a strip-shaped steel plate; 102. a safety barrier; 103. climbing a ladder by people;
2. a lower adjustment platform; 201. an outer frame; 202. an inner frame; 203. a support frame; 204. hanging a ring;
3. a beam set;
4. an adjustment device; 401. adjusting the bolt;
5. a gourd hooking device; 501. a main hook; 502. a secondary hook; 503. a chain;
6. and (4) an oil pressure tank.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
An object of the utility model is to provide a steel constructs dedicated positioning platform of post and positioning method, this positioning platform passes through upper portion operation platform, the setting of lower part regulation fixed platform, can satisfy the steel structure post and hang and put, fix a position, fix and each item process operation, can carry out once only accurate location to the steel structure post, reaches the effect that the location is accurate, convenient operation, safe high efficiency, economic nature are good.
A positioning platform of a foundation pit reverse construction method steel structure column is shown in figure 1 and comprises an upper operation platform 1, a lower adjusting platform 2, a beam group 3, an adjusting device 4 and two gourd hook devices 5 which are respectively arranged on two sides of the lower adjusting platform 2.
As shown in fig. 2, the upper working platform 1 comprises four elongated steel plates 101 welded end to end, a safety fence 102 welded to each steel plate, and a pedestrian ladder 103, and the height of the upper working platform 1 is 2m × 2m × 1.2 m.
As shown in fig. 3 and 4, the lower adjustment platform 2 includes an outer frame 201 and an inner frame 202 which are both arranged in a rectangular frame and formed by connecting triangular steels, a support frame 203 is connected to the bottom of the outer frame 201, the support frame 203 is arranged in a shape of a Chinese character 'jing' formed by welding four triangular steels, and the inner frame 202 is supported by the support frame 203. The outer frame 201 is mainly designed for bearing, and has strong rigidity and stability as a main stressed member of the whole positioning platform.
The crossbeam group 3 comprises four crossbeams which are respectively provided with four side surfaces of the lower adjusting platform 2, the adjusting device 4 comprises at least one adjusting bolt 401 which is arranged on each crossbeam, the utility model discloses the preferable mode is that two adjusting bolts 401 are arranged on each crossbeam, the adjusting bolts 401 are in threaded connection with the crossbeams, and the end parts of the adjusting bolts are abutted against the steel structure column; and the gourd hook device 5 is used for fixing the elevation position of the top of the steel-structured column.
Preferably, the two sets of beam sets 3 are longitudinally arranged, the two adjusting devices 4 are arranged and respectively correspond to the two beam sets 3, the adjusting bolt 401 of one adjusting device 4 abuts against the upper half part of the steel structure column, and the adjusting bolt 401 of the other adjusting device 4 abuts against the lower half part of the steel structure column.
As shown in fig. 4 and 5, the two symmetrical sides of the lower adjusting platform 2 are provided with a hanging ring 204, the hoist hook device 5 comprises a main hook 501 hung on the hanging ring 204, an auxiliary hook 502 hooked on the steel column, and a chain 503, one end of the chain 503 is connected with the auxiliary hook 502, the other end of the chain 503 bypasses the main hook 501 and is connected with a power source, and the power source can be manually pulled or mechanically pulled.
Less position error appears in the steel structure post after finishing adjusting through adjusting device 4, for the convenient processing of rectifying, the utility model discloses still include hydraulic pressure adjusting device, hydraulic pressure adjusting device includes two oil pressure grooves 6 that all are equipped with in four sides of lower regulation platform 2, and oil pressure groove 6 is used for installing the jack, and control jack slow jack is to steel structure post, and is the same with adjusting device 4 principle, only continues the regulation after just inconvenient unblock is fixed at adjusting device 4's adjusting bolt 401, therefore utilizes the jack to realize the fine setting of steel structure post.
The specific working principle is as follows: through two layers of adjusting devices 4 with sixteen adjusting bolts 401 in total, the four directions and eight directions of the steel structure column are effectively adjusted, the bolts are screwed and fixed after the directions are accurately determined, the adjusting mode is that if the steel structure column deviates towards one side, namely the axis of the steel structure column deviates at the moment, a worker can utilize other tools to screw the adjusting bolts 401 on the side, so that the adjusting bolts 401 push the steel structure column to the opposite side, and the axis position of the steel structure column is corrected; and then, the steel structure column is respectively hooked from two sides by utilizing the two groups of hoist hook devices 5, so that the function of lifting or descending the steel structure column is realized, and the steel structure column is fixed at the designed elevation.
As shown in fig. 6, the steel structure column construction process sequentially comprises the steps of field hard-to-ground treatment, bored concrete pile hole forming, bored concrete pile final hole acceptance inspection, reinforcement cage manufacturing and pile hole hoisting, positioning platform hoisting, steel structure column and reinforcement cage welding, steel structure column positioning adjustment and fixation, underwater cast pipe installation, tertiary hole cleaning, pile body concrete pouring, positioning platform displacement and pile hole backfilling.
With the utility model discloses a process that positioning platform is relevant lies in that positioning platform hangs puts, steel constructs post and steel cage welding and steel constructs post location regulation and fixed, for this reason, the utility model also provides a foundation ditch reverse construction method steel constructs the positioning method of post to how the position and the regulation of steel structure post are realized to the concrete description.
A method for positioning a steel structure column by a foundation pit reverse construction method comprises the following steps:
and S1, forming a pile hole through a cast-in-place pile hole forming process, and hoisting the reinforcement cage into the pile hole.
And S2, hanging the positioning platform to the pile hole, and performing azimuth test.
The specific construction steps of S2 are as follows:
s21, hoisting the positioning platform to the pile hole by using a crane, enabling a measurement engineer to coincide the center point of the positioning platform with a cross center line formed by four positioning points at the center of the pile hole, centering the center point of the reinforcement cage, and determining the placement position of the platform after repeated measurement is correct;
s22, after the positioning platform is installed, the levelness of the correction platform is adjusted by using a level meter, and if the horizon fluctuates, the column base of the positioning platform can be leveled by using a thin square wood or steel sheet plug pad properly;
and S23, drilling holes in the concrete hard ground after the adjustment of the central point, the levelness and the verticality is finished, and fixing the bottom angle of the external frame 201 of the platform by using expansion bolts to prevent the platform from shifting in the use process.
And S3, hoisting the steel structure column to the hole, welding the steel structure column with the reinforcing steel bars in the air and cooling.
And S4, adjusting the center point, the axis position and the verticality of the steel-structured column to the design requirements by using the adjusting device 4.
The specific construction steps of S4 are as follows:
s41, rechecking the crossed line of the central point of the pile hole, leading the central line into the center of the steel-structure column through four positioning frames after the central line is correct, and marking the central point position of the steel-structure column at the upper opening end of the steel-structure column by using a thin line;
s42, setting a central position cross line at the top surface of the steel structure column, and rechecking the position through an upper cross line and a lower cross line;
s43, respectively screwing eight adjusting bolts 401 of the adjusting device 4, which are respectively positioned on four sides of the steel structure column, and adjusting the position of the steel structure column until the central point, the verticality and the axis position meet the design requirements;
s44, welding oil pressure grooves 6 on four sides of the lower portion of the positioning platform, installing jacks in the oil pressure grooves 6, and finely adjusting the positions of the steel structure columns through pressurization in four directions.
S5, adjusting the steel structure column to reach the designed elevation by using the hoist hook device 5; specifically, the auxiliary hooks 502 of the two hoist hook devices 5 are used for hooking the positions of the batten plates on the two symmetrical sides of the steel structure column according to the elevation position, and the drag chain 503 integrally lifts or lowers the steel structure column until the steel structure column reaches the designed elevation.
S6, carrying out positioning inspection on the steel structure column; the method mainly comprises the steps of on-site measurement and positioning of a measuring instrument, bubble measurement of a level meter, verticality measurement of a running rule, axis deviation measurement of laser and the like.
In each step, the positioning platform comprises an upper operation platform 1 and a lower adjusting platform 2, and four side surfaces of the lower adjusting platform 2 are provided with cross beams;
the adjusting device 4 comprises two adjusting bolts 401 arranged on each cross beam, the adjusting bolts (401) are in threaded connection with the cross beams, and the end parts of the adjusting bolts are abutted against the steel structure columns;
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (6)
1. The positioning platform for the steel structure column of the foundation pit reverse construction method is characterized by comprising an upper operation platform (1), a lower adjusting platform (2), a beam group (3), an adjusting device (4) and two gourd hook devices (5) which are respectively arranged on two sides of the lower adjusting platform (2), wherein the beam group (3) comprises four beams which are respectively arranged on four side surfaces of the lower adjusting platform (2), the adjusting device (4) comprises at least one adjusting bolt (401) which is arranged on each beam, the adjusting bolts (401) are in threaded connection with the beams, and the end parts of the adjusting bolts are abutted against the steel structure column; and the hoist hook device (5) is used for fixing the elevation position of the top of the steel-structured column.
2. The positioning platform for the foundation pit reverse construction steel structure column according to claim 1, characterized in that the two groups of the beam sets (3) are longitudinally arranged, the two adjusting devices (4) are respectively corresponding to the two beam sets (3), the adjusting bolt (401) of one adjusting device (4) is abutted against the upper half part of the steel structure column, and the adjusting bolt (401) of the other adjusting device (4) is abutted against the lower half part of the steel structure column.
3. The positioning platform for the foundation pit reverse construction method steel structure column as claimed in claim 1, wherein two adjusting bolts (401) are arranged on each cross beam.
4. The positioning platform for the steel structure column of the foundation pit reverse construction method according to claim 1, characterized in that two symmetrical sides of the lower adjusting platform (2) are provided with hanging rings (204), the hoist hook device (5) comprises a main hook (501) hung on the hanging rings (204), an auxiliary hook (502) hooked on the steel structure column, and a chain (503), one end of the chain (503) is connected with the auxiliary hook (502), and the other end of the chain bypasses the main hook (501) and is connected with a power source.
5. The positioning platform of the foundation pit reverse construction steel column according to claim 1, characterized by further comprising a hydraulic adjusting device, wherein the hydraulic adjusting device comprises two hydraulic grooves (6) arranged on four sides of the lower adjusting platform (2), and the hydraulic grooves (6) are used for installing jacks.
6. The positioning platform for the foundation pit reverse construction steel structure column according to the claim 1, characterized in that the lower adjusting platform (2) comprises an outer frame (201) and an inner frame (202) which are arranged in a rectangular frame and are formed by connecting triangular steels, a supporting frame (203) is connected to the bottom of the outer frame (201), the supporting frame (203) is arranged in a shape like a Chinese character 'jing' formed by welding four triangular steels, and the inner frame (202) is supported on the supporting frame (203);
the upper working platform (1) comprises four elongated steel plates (101) welded end to end, safety guardrails (102) welded on each steel plate, and a pedestrian ladder (103).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020368223.4U CN212375847U (en) | 2020-03-20 | 2020-03-20 | Positioning platform of foundation pit reverse construction method steel structure column |
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| CN202020368223.4U CN212375847U (en) | 2020-03-20 | 2020-03-20 | Positioning platform of foundation pit reverse construction method steel structure column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270670A (en) * | 2020-03-20 | 2020-06-12 | 深圳市工勘岩土集团有限公司 | Positioning platform and positioning method for foundation pit reverse construction method steel structure column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270670A (en) * | 2020-03-20 | 2020-06-12 | 深圳市工勘岩土集团有限公司 | Positioning platform and positioning method for foundation pit reverse construction method steel structure column |
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