CN112177356B - Mounting and dismounting method of embedded steel ring for connecting main beam of steel cantilever unloading platform - Google Patents
Mounting and dismounting method of embedded steel ring for connecting main beam of steel cantilever unloading platform Download PDFInfo
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- CN112177356B CN112177356B CN202011034422.2A CN202011034422A CN112177356B CN 112177356 B CN112177356 B CN 112177356B CN 202011034422 A CN202011034422 A CN 202011034422A CN 112177356 B CN112177356 B CN 112177356B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/166—Landings, receiving platforms
Abstract
The invention discloses an installation and disassembly method of an embedded steel ring for connecting a main beam of a steel cantilever unloading platform, wherein an embedded box is required to be prefabricated before the embedded steel ring is installed, and the embedded box consists of a cross rod inserting part, an upright rod rotating part and a cross rod rotating part which are mutually communicated; the cross rod inserting part is a rectangular box body with strip-shaped openings at the upper end and the lower end, and the upright rod rotating part is an arc-shaped box body with arc-shaped openings at the upper end and the lower end; a cross rod clamping groove is formed in the cross rod rotating part, the cross rod clamping groove is perpendicular to the cross rod inserting part, and one end of the cross rod clamping groove is communicated with the outer side of the vertical rod rotating part; every two pre-buried boxes correspond pre-buried steel ring of installation, and two pre-buried boxes are pre-buried in the superstructure concrete, through inserting horizontal pole inserting part and rotatory back with pre-buried steel ring, upwards draw the card to go into horizontal pole draw-in groove interface realization pre-buried steel ring's installation fixed again, through strike pre-buried steel ring down after, the ninety degrees back of reverse rotation pre-buried steel ring, can follow horizontal pole inserting part with pre-buried steel ring and take out.
Description
Technical Field
The invention relates to the field of building platform erection, in particular to an installation and disassembly method of an embedded steel ring for connecting a main beam of a steel cantilever unloading platform.
Background
At present, the turnover of building major structure construction material generally adopts traditional shaped steel platform of unloading of encorbelmenting. Generally, the section steel cantilever unloading platform comprises a plurality of main beams and secondary beams which are parallel to each other, and a platform embossing steel plate is arranged between the main beams and the secondary beams. When the main beam is installed, a pre-embedded rear anchoring construction mode is usually adopted, and steel wire layer lifting rings, section steel beam anchoring rings and the like need to be pre-embedded in floor concrete. The section steel anchoring ring is a steel bar which is in an inverted U shape and two sides of the opening of which are outwards and horizontally bent, and comprises two vertical rods and two cross rods, wherein the two vertical rods are connected with each other at the upper ends of the vertical rods, and the cross rods are connected with the lower ends of the vertical rods. The pre-buried steel ring (i.e. the steel beam anchoring ring) is difficult to remove, easy to damage and unable to be reused, the installation and removal processes are complicated, and the construction period is long.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a simple and quick mounting and dismounting method of an embedded steel ring for connecting a main beam of a steel cantilever unloading platform.
In order to solve the technical problems, the invention adopts the following technical scheme:
the mounting method of the embedded steel ring for connecting the main beam of the steel cantilever unloading platform comprises the following steps: s1, prefabricating a plurality of pre-buried boxes for assembling pre-buried steel rings in a factory according to the size and the number of the pre-buried steel rings to be buried, wherein each pre-buried box consists of a cross rod inserting part, an upright rod rotating part and a cross rod rotating part which are communicated with each other, the cross rod inserting part and the upright rod rotating part are vertically arranged, the cross rod rotating part is horizontally arranged, the cross rod inserting part and the upright rod rotating part are arranged on the cross rod rotating part, and the left side or the right side of the cross rod inserting part is connected with the right side or the left side of the upright rod rotating part; the cross rod inserting part is a rectangular box body of which the lower end is communicated with the cross rod rotating part and the left side or the right side is communicated with the vertical rod rotating part, and the vertical rod rotating part is an arc box body of which the lower end is communicated with the cross rod rotating part and the right side or the left side is communicated with the cross rod inserting part; the upper end and the lower end of the cross rod insertion part are provided with strip-shaped openings, the upper end and the lower end of the upright rod rotating part are provided with arc-shaped openings, and the strip-shaped openings are communicated with the arc-shaped openings; the cross rod rotating part protrudes upwards from the position close to the upright rod rotating part to form a cross rod clamping groove communicated with hollow parts of the cross rod rotating part and the upright rod rotating part, and the cross rod clamping groove is perpendicular to the cross rod inserting part; s2, before concrete pouring of each floor, carrying out measurement paying-off according to the positioning of the discharging platform and the installation position of the cross rod of the embedded steel ring, and popping up the position of the cross rod of the embedded steel ring; s3, installing embedded boxes at the paying-off position, installing two embedded boxes at each embedded steel ring position, and during installation, ensuring that cross bar clamping grooves of the two embedded boxes are positioned at cross bar installation positions and correspond to elastic lines of the cross bar installation positions, the vertical distance of the inner sides of the two embedded box bodies corresponds to the vertical distance of two vertical rods in the embedded steel rings, and simultaneously ensuring that the installation heights of the two embedded boxes are consistent, and the upper ends of the embedded box bodies are consistent with the height of the upper end face of the floor concrete or extend out of the upper end face of the floor concrete; s4, fixing each embedded box; s5, pouring floor concrete; s6, installing each embedded steel ring, inserting the two cross rods of each embedded steel ring into the cross rod inserting parts of the embedded boxes correspondingly during installation, rotating the embedded steel rings until the embedded steel rings cannot be placed downwards, lifting the embedded steel rings upwards until the embedded steel rings abut against the inner wall of the outer side of the cross rod rotating part, enabling the two cross rods of each embedded steel ring to be clamped in the cross rod clamping grooves of the two embedded boxes, and completing installation of the embedded steel rings after the embedded steel rings are tightly matched with the cross rod clamping grooves;
when the embedded steel ring is disassembled, the upper end of the embedded steel ring is knocked downwards by a tool firstly, so that the two cross rods of the embedded steel ring are separated from the cross rod clamping grooves of the two embedded boxes, then the embedded steel ring is rotated reversely, and the embedded steel ring can be lifted upwards until the two cross rods correspond to the cross rod inserting parts of the two embedded boxes, and the embedded steel ring is taken out.
Like this, the pre-buried steel ring of installation is not directly pre-buried in the superstructure concrete, but fixes in the pre-buried box of being pre-buried in the superstructure concrete, and has the space that supplies in the pre-buried steel ring pole setting and horizontal pole rotatory in the box body, still has the draw-in groove of chucking horizontal pole, and then when the installation, insert the pre-buried steel ring and rotatory back, upwards lift again and draw and can realize pre-buried steel ring's fixed. The fixing mode is simple and efficient, too large workload cannot be increased, meanwhile, the embedded box is embedded in the floor concrete and integrated with the floor concrete, large external force can be borne, the outer end of the overhanging girder is in a suspension shape, the main gravity of the overhanging girder is outside the floor concrete, the fixed end of the girder can form upward force, and therefore the embedded steel ring can be also upwards overhung by the girder in the using process and cannot fall off, and the assembling requirement of the girder can be met. After the platform of unloading finishes using, outside pull girder makes the girder take out the back from pre-buried steel ring, and usable instrument strikes pre-buried steel ring upper end downwards, makes two horizontal poles of pre-buried steel ring break away from the horizontal pole draw-in groove, then the pre-buried steel ring of reverse rotation, until two horizontal poles correspond the back with the horizontal pole inserting part of left box body and right box body mutually, can upwards carry and draw pre-buried steel ring, will take out pre-buried steel ring in left box body and the right box body, realize the dismantlement of pre-buried steel ring. Therefore, when the box is used, the direction of the embedded steel ring can be changed by rotating the embedded steel ring in the forward and reverse directions, so that the box corresponds to the left box body and the right box body in different positions, and the box is taken out and installed. The assembly and disassembly mode is very convenient, the embedded steel ring is not required to be cut, so that the embedded steel ring can be reused, meanwhile, the cutting procedures are reduced, and the construction period is effectively shortened.
Further, the pre-buried box is fixed on the floor bottom die through a backing plate, a fixing frame for clamping the cross rod rotating part of the pre-buried box is arranged on the backing plate, and the backing plate is fixed on the floor bottom die through a fastening piece. Like this, adopt the fixed pre-buried box of backing plate, can prevent that pre-buried box from producing the aversion at concrete placement in-process, influencing the installation of pre-buried steel ring. Meanwhile, the base plate and the embedded box are fixed together in an inserting mode, and the fixing is convenient and simple.
Further, the horizontal pole rotating part is a sectorial box body, including upper junction plate, lower junction plate, arc and curb plate, is equipped with the UNICOM mouth with strip opening and arc opening looks UNICOM in the upper end of horizontal pole rotating part. Like this, the horizontal pole rotating part is fan-shaped, and is the same with the rotatory orbit projection shape of horizontal pole, can control the rotation angle of pre-buried steel ring well to ensure rotatory back, corresponding with the strip opening of horizontal pole draw-in groove and horizontal pole inserting part, realize the purpose of quick installation and dismantlement.
Furthermore, one side of the cross rod inserting portion and a side plate of the cross rod rotating portion are located on the same plane, and the outer side of the vertical rod rotating portion and the other side plate of the cross rod rotating portion are located on the same plane. Like this, the preparation of being convenient for, simultaneously, can ensure that the horizontal pole is rotatory to be in place the back and is corresponding with the strip opening of horizontal pole draw-in groove and horizontal pole inserting part.
Furthermore, horizontal pole inserted part, pole setting rotating part and horizontal pole rotating part integrated into one piece are made by plastics or aluminum plate or corrosion resistant plate or galvanized sheet. Like this, the box body structure is firm, and is difficult for rustting, and intensity is high.
Further, the length of the strip-shaped opening is larger than or equal to the length of a bending cross rod of the embedded steel ring to be assembled, the radian of the arc-shaped opening is 90 degrees, and the length of the cross rod clamping groove is matched with the length of the bending cross rod of the embedded steel ring to be clamped or is larger than the length of the bending cross rod of the embedded steel ring to be clamped. Like this, can ensure during the use that the horizontal pole of pre-buried steel ring can insert and take out, and can be in rotatory in-process unimpeded.
Furthermore, a layer of flexible anti-abrasion pad is arranged in the clamping groove of the cross rod. Like this, horizontal pole and draw-in groove flexible contact can not be to the draw-in groove wearing and tearing, and simultaneously, flexible abrasionproof pad still can further chucking horizontal pole.
Drawings
Fig. 1 is a schematic perspective view of an embedded box in the embodiment;
FIG. 2 is a schematic view of an installation structure of the embedded box in the embodiment;
FIG. 3 is a top view of the distribution structure of the left box and the right box in the embodiment.
In the figure: the cross rod comprises a cross rod inserting part 1, a strip-shaped opening 11, a vertical rod rotating part 2, a cross rod rotating part 3, a cross rod clamping groove 31, an upper connecting plate 32, a lower connecting plate 33, an arc-shaped plate 34, a side plate 35, floor concrete 4, an embedded steel ring 5, a cross rod 51 and a vertical rod 52.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example (b):
the method for installing and disassembling the embedded steel ring for connecting the main beam of the steel cantilever unloading platform provided by the embodiment comprises the following steps: s1, prefabricating a plurality of embedded boxes for assembling the embedded steel rings 5 in a factory according to the size and the number of the embedded steel rings 5 to be embedded, wherein each embedded box is composed of a cross rod inserting part 1, an upright rod rotating part 2 and a cross rod rotating part 3 which are communicated with one another, the cross rod inserting part 1 and the upright rod rotating part 2 are vertically arranged, the cross rod rotating part 3 is horizontally arranged, the cross rod inserting part 1 and the upright rod rotating part 2 are arranged on the cross rod rotating part 3, and the left side or the right side of the cross rod inserting part is connected with the right side or the left side of the upright rod rotating part; the cross rod inserting part 1 is a rectangular box body, the lower end of the rectangular box body is communicated with the cross rod rotating part 3, one side (namely the inner side of the cross rod inserting part) connected with the vertical rod rotating part 2 is communicated with the vertical rod rotating part, and the vertical rod rotating part 2 is an arc box body, the lower end of the arc box body is communicated with the cross rod rotating part, one side (namely the inner side of the vertical rod rotating part) connected with the cross rod inserting part 1 is communicated with the cross rod inserting part; the upper end and the lower end of the cross rod insertion part 1 are provided with strip-shaped openings 11, the upper end and the lower end of the upright rod rotating part 2 are provided with arc-shaped openings, and the strip-shaped openings 11 are communicated with the arc-shaped openings; the cross rod rotating part 3 protrudes upwards at a position close to the upright rod rotating part 2 to form a cross rod clamping groove 31 communicated with hollow parts of the cross rod rotating part 3 and the upright rod rotating part 2, and the cross rod clamping groove 31 is perpendicular to the cross rod inserting part 1; the projection of the inner cavity of the cross rod rotating part 3 is positioned in the 90-degree rotating radius of the cross rod clamping groove 31, or is larger than the 90-degree rotating radius of the cross rod clamping groove 31; s2, before concrete pouring of each floor, carrying out measurement paying-off according to the positioning of the discharging platform and the installation position of the cross rod of the embedded steel ring 5, and popping up the position of the cross rod 51 of the embedded steel ring 5; s3, installing embedded boxes at the paying-off position, installing two embedded boxes at each embedded steel ring 5, and during installation, ensuring that the transverse rod clamping grooves 31 of the two embedded boxes are positioned at the transverse rod installation position and correspond to elastic threads at the transverse rod installation position, the vertical distance of the inner sides of the two embedded box bodies corresponds to the vertical distance of two vertical rods in the embedded steel rings 5, and simultaneously ensuring that the installation heights of the two embedded boxes are consistent, and the upper ends of the embedded box bodies are consistent with the upper end face of the floor concrete 4 or extend out of the upper end face of the floor concrete 4; s4, fixing each embedded box; specifically, the embedded box is fixed on the floor bottom die through a base plate fixedly arranged on the floor bottom die, and a fixing frame for clamping a cross rod rotating part of the embedded box is arranged on the base plate; s5, pouring floor concrete 4; s6, installing each embedded steel ring 5, inserting the two cross rods 51 of each embedded steel ring 5 into the cross rod inserting parts 1 of the embedded boxes correspondingly during installation, rotating the embedded steel rings 5 until the embedded steel rings cannot be placed downwards, lifting the embedded steel rings 5 upwards until the embedded steel rings abut against the inner wall of the outer side of the cross rod rotating part 3, enabling the two cross rods 51 of each embedded steel ring 5 to be clamped in the cross rod clamping grooves 31 of the two embedded boxes, and completing installation of the embedded steel rings 5 after the embedded steel rings are tightly matched with the cross rod clamping grooves 31;
when the embedded steel ring is disassembled, firstly, the upper end of the embedded steel ring 5 is knocked downwards by a tool, so that the two cross rods 51 of the embedded steel ring 5 are separated from the cross rod clamping grooves 31 of the two embedded boxes, then the embedded steel ring 5 is rotated reversely, and the embedded steel ring 5 can be lifted upwards until the two cross rods 51 correspond to the cross rod inserting parts 1 of the two embedded boxes, and the embedded steel ring 5 is taken out; after the embedded steel ring 5 is taken out, the fine stone concrete is introduced into the embedded box by using a grouting pipe, and the embedded box is embedded.
When the installation position of the embedded box body is determined, the cross rod of the embedded steel ring 5 can be clamped in the two embedded boxes firstly, and then the two embedded boxes are placed at the corresponding fixed positions of the cantilever main beams, so that the installation position and the direction of the embedded boxes can be determined. The installation position of the embedded box determined by the method is more accurate and faster.
Before the floor concrete is poured, the strip-shaped opening and the arc-shaped opening of the embedded box are sealed by using the film, so that the condition that the concrete enters the embedded box to influence the use of the embedded box when the concrete is poured is prevented. During specific implementation, a wood wedge block can be used for inserting or rubber is used for sealing the strip-shaped opening and the arc-shaped opening at the upper end of the embedded box.
As shown in fig. 1, the cross rod rotating portion 3 is a sector-shaped box body, and includes an upper connecting plate 32, a lower connecting plate 33, an arc-shaped plate 34 and a side plate 35, and a communication port communicating with the strip-shaped opening 11 and the arc-shaped opening is provided at the upper end of the cross rod rotating portion 3.
During the concrete implementation, horizontal pole rotating part 3 can set to other shapes, as long as can ensure to wait to rotate the horizontal pole and can be in horizontal pole rotating part 3 internal rotation, and can correspond with horizontal pole draw-in groove 31 position after the rotation just. The horizontal pole rotating part 3 can be the rectangle promptly, and projected area is greater than the rotatory 90 ranges of horizontal pole draw-in groove.
One side of the cross rod insertion part 1 and the side plate 35 of the cross rod rotating part 3 are in the same plane, and the outer side of the vertical rod rotating part 2 and the other side plate of the cross rod rotating part 3 are in the same plane.
Horizontal pole inserted part 1, pole setting rotating part 2 and horizontal pole rotating part 3 integrated into one piece are made by plastics or aluminum plate or corrosion resistant plate or galvanized sheet.
The length of the strip-shaped opening 11 is larger than or equal to the length of a bending cross rod of the embedded steel ring to be assembled, the radian of the arc-shaped opening is 90 degrees, and the length of the cross rod clamping groove 31 is matched with the length of the bending cross rod of the embedded steel ring to be clamped or is larger than the length of the bending cross rod of the embedded steel ring to be clamped.
The cross rod clamping groove 31 in the embodiment is rectangular, a layer of flexible anti-abrasion pad is arranged in the cross rod clamping groove 31, and a plurality of bulges can be uniformly arranged in the anti-abrasion pad to increase the anti-skid performance of the anti-abrasion pad.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the present invention has been described in detail by referring to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.
Claims (7)
1. The mounting method of the embedded steel ring for connecting the main beam of the steel cantilever unloading platform is characterized by comprising the following steps of: s1, prefabricating a plurality of embedded boxes for assembling the embedded steel rings (5) in a factory according to the size and the number of the embedded steel rings (5) to be embedded, wherein each embedded box is composed of a cross rod inserting part (1), an upright rod rotating part (2) and a cross rod rotating part (3) which are communicated with one another, the cross rod inserting part (1) and the upright rod rotating part (2) are vertically arranged, the cross rod rotating part (3) is horizontally arranged, the cross rod inserting part (1) and the upright rod rotating part (2) are arranged on the cross rod rotating part (3), and the left side or the right side of the cross rod inserting part is connected with the right side or the left side of the upright rod rotating part; the cross rod inserting part (1) is a rectangular box body of which the lower end is communicated with the cross rod rotating part and the left side or the right side is communicated with the vertical rod rotating part, and the vertical rod rotating part (2) is an arc box body of which the lower end is communicated with the cross rod rotating part and the right side or the left side is communicated with the cross rod inserting part; the upper end and the lower end of the cross rod inserting part (1) are provided with a strip-shaped opening (11), the upper end and the lower end of the upright rod rotating part (2) are provided with an arc-shaped opening, and the strip-shaped opening (11) is communicated with the arc-shaped opening; the cross rod rotating part (3) is protruded upwards near the upright rod rotating part to form a cross rod clamping groove (31) communicated with hollow parts of the cross rod rotating part and the upright rod rotating part, and the cross rod clamping groove (31) is vertical to the cross rod inserting part (1); s2, before concrete pouring of each floor, carrying out measurement paying-off according to the positioning of the discharging platform and the installation position of the cross rod of the embedded steel ring (5), and popping up the position of the cross rod of the embedded steel ring; s3, installing embedded boxes at the paying-off position, installing two embedded boxes at each embedded steel ring (5), and during installation, ensuring that cross bar clamping grooves (31) of the two embedded boxes are located at cross bar installation positions and correspond to elastic lines of cross bars (51) installation positions, the vertical distance of the inner sides of the two embedded box bodies corresponds to the vertical distance of two vertical rods (52) in the embedded steel rings (5), meanwhile, ensuring that the installation heights of the two embedded boxes are consistent, and the upper ends of the embedded box bodies are consistent with the upper end face of floor concrete (4) or extend out of the upper end face of the floor concrete (4); s4, fixing each embedded box; s5, pouring floor concrete (4); s6, install each pre-buried steel ring, during the installation, correspond two horizontal poles of pre-buried steel ring respectively and insert in horizontal pole inserting part (1) of pre-buried box, until can not transfer the back, rotatory pre-buried steel ring (5), until the back of offsetting with the inner wall in horizontal pole rotating part (3) outside, upwards carry and draw pre-buried steel ring (5), two horizontal poles (51) that make pre-buried steel ring (5) all block in horizontal pole draw-in groove (31) of two pre-buried boxes, with horizontal pole draw-in groove (31) tight fit back, pre-buried steel ring (5) installation is accomplished.
2. The method for installing the embedded steel ring for connecting the main beam of the steel cantilever unloading platform according to claim 1, wherein the embedded box is fixed on the bottom die of the floor system by a backing plate, and a fixing frame for the cross rod rotating part of the embedded box to be clamped in is arranged on the backing plate.
3. The mounting method of the embedded steel ring for the main beam connection of the steel cantilever discharging platform according to claim 1 or 2, wherein the cross rod rotating part (3) is a fan-shaped box body and comprises an upper connecting plate (32), a lower connecting plate (33), an arc-shaped plate (34) and a side plate (35), and a communicating opening communicated with the strip-shaped opening (11) and the arc-shaped opening is formed in the upper end of the cross rod rotating part (3).
4. The method for installing the embedded steel ring for connecting the main beam of the steel cantilever unloading platform according to claim 3, wherein one side of the cross rod insertion part (1) and the side plate (35) of the cross rod rotating part (3) are in the same plane, and the outer side of the vertical rod rotating part (2) and the other side plate of the cross rod rotating part (3) are in the same plane.
5. The mounting method of the embedded steel ring for the main beam connection of the steel cantilever discharging platform according to the claim 1, 2 or 4, wherein the length of the strip-shaped opening (11) is greater than or equal to the bending cross rod of the embedded steel ring to be assembled, the radian of the arc-shaped opening is 90 degrees, and the length of the cross rod clamping groove (31) is matched with the length of the bending cross rod to be clamped into the embedded steel ring or is greater than the length of the bending cross rod to be clamped into the embedded steel ring.
6. The mounting method of the embedded steel ring for the main beam connection of the steel cantilever unloading platform according to claim 5, wherein a layer of flexible anti-abrasion pad is arranged in the cross rod clamping groove (31).
7. The mounting method of the embedded steel ring for the main beam connection of the steel cantilever discharging platform is characterized in that during the dismounting, a tool is used for knocking the upper end of the embedded steel ring (5) downwards to enable the two cross rods (51) of the embedded steel ring (5) to be separated from the cross rod clamping grooves (31) of the two embedded boxes, then the embedded steel ring (5) is rotated reversely until the two cross rods (51) correspond to the cross rod inserting parts (1) of the two embedded boxes, the embedded steel ring (5) can be lifted upwards, and the embedded steel ring (5) is taken out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011034422.2A CN112177356B (en) | 2020-09-27 | 2020-09-27 | Mounting and dismounting method of embedded steel ring for connecting main beam of steel cantilever unloading platform |
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| CN202011034422.2A CN112177356B (en) | 2020-09-27 | 2020-09-27 | Mounting and dismounting method of embedded steel ring for connecting main beam of steel cantilever unloading platform |
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| CN112177356B true CN112177356B (en) | 2022-02-22 |
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