CN110821133A - Externally hung operating steel platform and construction method thereof - Google Patents
Externally hung operating steel platform and construction method thereof Download PDFInfo
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- CN110821133A CN110821133A CN201911073957.8A CN201911073957A CN110821133A CN 110821133 A CN110821133 A CN 110821133A CN 201911073957 A CN201911073957 A CN 201911073957A CN 110821133 A CN110821133 A CN 110821133A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 133
- 239000010959 steel Substances 0.000 title claims abstract description 133
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings
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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
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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
- E04G5/00—Component parts or accessories for scaffolds
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/001—Safety or protective measures against falling down relating to scaffoldings
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
- E04G5/145—Toe boards therefor
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/16—Struts or stiffening rods, e.g. diagonal rods
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- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides an externally hung operation steel platform and a construction method thereof, which are used for constructing a middle externally hung prefabricated wall between two prefabricated side walls, the steel platform adopts a square frame with the cross section of U-shaped and with two sides respectively hung on the prefabricated side walls, the top of the square frame comprises a long main hanging longitudinal beam and two short main hanging longitudinal beams, each short main hanging longitudinal beam is connected with the long main hanging longitudinal beam through two transverse connecting rods, the outer transverse connecting rods are connected with the long main hanging longitudinal beam and the short main hanging longitudinal beams to ensure that the long main hanging longitudinal beam and the short main hanging longitudinal beams respectively extend outwards, the length of the outwards extending parts of the long main hanging longitudinal beam and the short main hanging longitudinal beams is at least 5 cm greater than the prefabricated width, thereby the externally hung operation steel platform is stably hung on the prefabricated side walls on the two sides, and the externally hung operation steel platform can replace the existing scaffold for constructing the middle externally hung prefabricated wall, the problem of middle part cantilever prefabricated wall hang two bracing installations difficulty after taking one's place to and set up scaffold frame expense too big now is solved.
Description
Technical Field
The invention belongs to the technical field of building construction, and relates to an externally hung operating steel platform and a construction method thereof.
Background
In the current prefabricated wall panel work progress, the middle part between two on-the-spot prefabricated side walls is chosen the prefabricated wall outward and is hung the board outward and is taken one's place the construction when the back twice bracing installation of taking one's place, the type of scaffold frame of encorbelmenting can be taken in general building site, adopt traditional scaffold frame construction of setting up, work load is great, man-hour is longer, and dangerous higher, the appearance of a new platform of operating the steel of encorbelmenting, adopt regularization shaped steel operation platform, can practice thrift the cost, it is higher at the simple and convenient security of operation at the construction site again, be one kind and use extensive operation platform technique afterwards.
Therefore, how to provide a more simple and economic external operation steel platform can greatly save the economic cost for building a scaffold and reduce the safety risk in the operation process, and the external operation steel platform is convenient and rapid to construct and can accelerate the construction speed, thereby becoming the technical problem of further perfecting and optimizing in the building construction field.
Disclosure of Invention
The invention aims to provide an externally-hung operating steel platform and a construction method thereof, and aims to solve the problems that after a middle externally-hung prefabricated wall between two prefabricated side walls is hoisted in place, the construction operation is difficult when two inclined struts are installed, and the cost for building a scaffold is overlarge.
In order to solve the technical problems, the invention provides the following technical scheme:
an externally hung operation steel platform is used for constructing a middle overhanging prefabricated wall between two prefabricated side walls, and comprises a square frame with a U-shaped cross section, wherein two sides of the square frame are hung on the prefabricated side walls respectively, a U-shaped groove of the square frame can be penetrated by the middle overhanging prefabricated wall, the top of the square frame comprises a long main hanging longitudinal beam and two short main hanging longitudinal beams, the two short main hanging longitudinal beams are arranged on one side of the long main hanging longitudinal beam, each short main hanging longitudinal beam is connected with the long main hanging longitudinal beam through two transverse connecting rods, the transverse connecting rods are respectively and vertically connected with the short main hanging longitudinal beams and the long main hanging longitudinal beam, the transverse connecting rod on the inner side is connected between the inner side end of the short main hanging longitudinal beam and the long main hanging longitudinal beam, and the transverse connecting rod on the outer side is connected with the long main hanging longitudinal beam and the short main hanging longitudinal beam to ensure that the long main hanging longitudinal beam and the short main hanging longitudinal beam extend outwards respectively, the length of the outward extending part of the long main hanging longitudinal beam and the short main hanging longitudinal beam is at least 5 cm added for the width of the prefabricated side wall, a longitudinal connecting rod is arranged between two inner lateral connecting rods, the connecting part of the longitudinal connecting rod and the short main hanging longitudinal beam and the connecting part of the lateral connecting rod and the long main hanging longitudinal beam are respectively fixedly connected with the upper end of a vertical connecting rod, the lower end of the vertical connecting rod is connected with the bottom outer side connecting rod through the bottom outer side connecting rod, a bottom inner side connecting rod is arranged between the bottom outer side connecting rods, and the bottom outer side connecting rod and the bottom inner side connecting rod form a U-shaped area and a U-shaped area upper laying.
Preferably, in the above external hanging operation steel platform, a sealing plate is arranged at the middle-lower part between the vertical connecting rods connecting the main hanging longitudinal beams.
Preferably, in the above-mentioned external operation steel platform, still include four spacing reinforcing bars, spacing reinforcing bar vertical fixation is on corresponding prefabricated side wall top, and is located the inboard of long main longeron or short main longeron of hanging, and is located the outside of corresponding transverse connection pole.
Preferably, the external hanging operation steel platform further comprises a limiting bolt, through holes for the limiting bolt to pass through are formed in the positions, close to the long main hanging longitudinal beam, of the transverse connecting rods located on the outer side, and the limiting bolts penetrate through the corresponding through holes and then abut against the side faces of the corresponding prefabricated side walls.
Preferably, in the above-mentioned external operation steel platform, the external operation steel platform further includes two vertical rods, two horizontal steel wire ropes and two oblique steel wire ropes, the two vertical rods are respectively arranged on the outer sides of the short main hanging longitudinal beams, the vertical rods are fixedly arranged on the floor slabs corresponding to the floors, one end of each horizontal steel wire rope is connected with the middle portion of the corresponding vertical connecting rod of the corresponding long main hanging longitudinal beam, the other end of each horizontal steel wire rope is horizontally connected to the corresponding vertical rod, one end of each oblique steel wire rope is connected with the lower end of the corresponding vertical connecting rod of the corresponding long main hanging longitudinal beam, and the other end of each horizontal steel wire rope is horizontally connected to.
Preferably, in the above-mentioned external operation steel platform, the joints of the horizontal steel wire rope, the oblique steel wire rope and the vertical connecting rod and the joints of the horizontal steel wire rope, the oblique steel wire rope and the vertical rod are provided with metal pull rings.
Preferably, in the above external hanging operation steel platform, two round steels for installing an enclosure are arranged at the top of the long main hanging longitudinal beam.
Preferably, in the above-mentioned external hanging operation steel platform, the step cross bars for constructors to walk up and down are arranged at equal intervals between two vertical connecting rods connected with a short main hanging longitudinal beam.
Preferably, in the above-mentioned external hanging operation steel platform, a cross brace is arranged between the long main hanging longitudinal beam and the bottom of the platform, an inclined support is arranged between the lateral connecting rod at the outer side and the bottom of the platform, and a lateral middle connecting rod is arranged in the middle of two vertical connecting rods at two ends of the lateral connecting rod connected to the outer side.
The invention also discloses a construction method of the externally hung operating steel platform, which comprises the following steps:
the working condition I is as follows: hoisting the prefabricated side walls on two sides of the middle overhanging prefabricated wall in place and finishing grouting;
working conditions are as follows: when the grouting mortar of the prefabricated side walls on the two sides reaches the design strength, the externally hung operation steel platform is installed, so that the long main hanging longitudinal beam and the short main hanging longitudinal beam are respectively hung on the corresponding prefabricated side walls;
working conditions are as follows: hoisting the middle cantilever prefabricated wall in place, grouting, installing an inclined strut by a constructor standing on an external hanging operation steel platform, connecting the upper end of the inclined strut to the side surface of the middle cantilever prefabricated wall, and connecting the lower end of the inclined strut to the side surface of the prefabricated side wall;
working conditions are as follows: and (3) when the grouting mortar strength of the middle overhanging prefabricated wall reaches the design strength, dismantling the inclined strut, and finally dismantling the externally hung operating steel platform.
According to the technical scheme disclosed above, compared with the prior art, the invention has the following beneficial effects:
the invention provides an externally hung operating steel platform, which adopts a square frame with a U-shaped cross section, wherein two sides of the square frame are respectively hung on a prefabricated side wall, a U-shaped groove of the square frame can be penetrated by a middle overhung prefabricated wall, the top of the square frame comprises a long main hanging longitudinal beam and two short main hanging longitudinal beams, the two short main hanging longitudinal beams are arranged on one side of the long main hanging longitudinal beam, each short main hanging longitudinal beam is connected with the long main hanging longitudinal beam through two transverse connecting rods, the transverse connecting rods are respectively and vertically connected with the short main hanging longitudinal beam and the long main hanging longitudinal beam, the transverse connecting rods on the inner side are connected between the inner side end of the short main hanging longitudinal beam and the long main hanging longitudinal beam, the transverse connecting rods on the outer side are connected with the long main hanging longitudinal beam and the short main hanging longitudinal beam to enable the long main hanging longitudinal beam and the short main longitudinal beam to respectively extend outwards, the outwards extending parts of the long main hanging longitudinal beam and the short hanging longitudinal beam are at least 5 cm longer than the width, therefore, the external operating steel platform can be stably hung on the prefabricated side walls on two sides, the external operating steel platform can replace the existing scaffold construction middle cantilever prefabricated wall, the problems that the installation of two inclined struts is difficult after the middle cantilever prefabricated wall is hung in place, and the cost of the existing scaffold is too high are solved.
According to the construction method of the external hanging operation steel platform, the prefabricated side walls on two sides of the prefabricated wall are lifted in place by means of cantilever in the middle, and grouting is completed; when the grouting mortar of the prefabricated side walls on the two sides reaches the design strength, the externally hung operation steel platform is installed, so that the long main hanging longitudinal beam and the short main hanging longitudinal beam are respectively hung on the corresponding prefabricated side walls; the middle cantilever prefabricated wall is hoisted in place and grouted, a constructor stands on an external hanging operation steel platform to install an inclined strut, the upper end of the inclined strut is connected to the side face of the middle cantilever prefabricated wall, and the lower end of the inclined strut is connected to the side face of the prefabricated side wall, so that the installation difficulty of the middle cantilever prefabricated wall and the inclined strut is effectively reduced, the need of building a scaffold on site is avoided, and a large amount of manpower and material resources are saved; and finally, removing the inclined strut when the grouting mortar strength of the middle overhanging prefabricated wall reaches the design strength, and finally removing the externally hung operating steel platform.
Drawings
FIG. 1 is a schematic structural view of an external hanging operation steel platform according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a usage status of the external hanging operation steel platform according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with an embodiment of the present invention;
FIG. 4 is a detailed view of a resting point of the external hanging operation steel platform according to one embodiment of the present invention;
fig. 5 to 8 are process diagrams of a construction method of the external hanging operation steel platform according to an embodiment of the invention.
In the figure: 1-prefabricated side wall, 2-middle part external cantilever prefabricated wall, 3-long main hanging longitudinal beam, 4-short main hanging longitudinal beam, 5-transverse connecting rod, 6-outward extending part, 7-longitudinal connecting rod, 8-vertical connecting rod, 9-bottom outer connecting rod, 10-bottom inner connecting rod, 11-steel plate, 12-sealing plate 12, 13-limiting steel bar, 14-limiting bolt, 15-vertical rod, 16-transverse steel wire rope, 17-oblique steel wire rope, 18-floor slab, 19-metal pull ring, 20-round steel, 21-pedal cross rod, 22-shear brace, 23-oblique brace, 24-transverse middle connecting rod, 25-middle hanging beam, 26-kick line and 27-diagonal brace.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. The technical contents and features of the present invention will be described in detail below with reference to the embodiments illustrated in the accompanying drawings. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
Referring to fig. 1 to 4, the embodiment discloses an external hanging operation steel platform, which is used for constructing a middle overhanging prefabricated wall 2 between two prefabricated side walls 1, and comprises a square frame with a U-shaped cross section, wherein two sides of the square frame are hung on the two prefabricated side walls 1 respectively, the U-shaped groove of the square frame can be penetrated through by the middle overhanging prefabricated wall 2, the top of the square frame comprises a long main hanging longitudinal beam 3 and two short main hanging longitudinal beams 4, the two short main hanging longitudinal beams 4 are arranged on one side of the long main hanging longitudinal beam 3, each short main hanging longitudinal beam 4 is connected with the long main hanging longitudinal beam 3 through two transverse connecting rods 5, the transverse connecting rods 5 are respectively connected with the short main hanging longitudinal beam 4 and the long main hanging longitudinal beam 3 vertically, the transverse connecting rod 5 on the inner side is connected between the inner side end of the short main hanging longitudinal beam 4 and the long main hanging longitudinal beam 3, and the transverse connecting rod 5 on the outer side connects the long main hanging longitudinal beam 3 with the short main hanging longitudinal beam 4, so that the long main hanging longitudinal Hang longeron 4 respectively outwards extension with short owner, the length of the outside extension 6 of longeron 3 and short owner string longeron 4 adds 5 centimetres for prefabricated side wall 1's width at least, is equipped with longitudinal tie 7 between the transverse tie 5 of two inboards, forms "U" type recess, and longitudinal tie 7 is the tank bottom, transverse tie 5 and short owner hang the junction of longeron 4 and the junction of the transverse tie 5 in the outside and long owner string longeron 3 respectively with the upper end fixed connection of a vertical tie 8, the lower extreme of vertical tie 8 is connected through bottom outside connecting rod 9, be equipped with bottom inside connecting rod 10 between the bottom outside connecting rod 9, bottom outside connecting rod 9 and bottom inside connecting rod 10 constitute a U type region and lay steel sheet 11 on the U type region.
The invention provides an externally hung operating steel platform, which adopts a square frame with a U-shaped cross section and two sides hung on a prefabricated side wall 1 respectively, a U-shaped groove of the square frame can be penetrated by a middle overhanging prefabricated wall 2, the top of the square frame comprises a long main hanging longitudinal beam 3 and two short main hanging longitudinal beams 4, the two short main hanging longitudinal beams 4 are arranged on one side of the long main hanging longitudinal beam 3, each short main hanging longitudinal beam 4 is connected with the long main hanging longitudinal beam 3 through two transverse connecting rods 5, the transverse connecting rods 5 are respectively and vertically connected with the short main hanging longitudinal beams 4 and the long main hanging longitudinal beam 3, wherein the transverse connecting rod 5 on the inner side is connected between the inner side end of the short main hanging longitudinal beam 4 and the long main hanging longitudinal beam 3, the transverse connecting rod 5 on the outer side is connected with the long main hanging longitudinal beam 3 and the short main hanging longitudinal beam 4 to ensure that the long main hanging longitudinal beam 3 and the short main hanging longitudinal beam 4 extend outwards respectively, the length of the outward extension part 6 of the long main hanging longitudinal beam 3 and the short main hanging longitudinal beam 4 is at least 5 centimeters larger than the width of the prefabricated side wall 1, so that the external operation steel platform can be stably hung on the prefabricated side walls 1 on two sides, the external operation steel platform can replace the existing scaffold for constructing the middle externally-selected prefabricated wall 2, and the problems that the two inclined struts 27 are difficult to install after the middle externally-selected prefabricated wall 2 is hung in place and the cost of the existing scaffold is too high are solved.
Preferably, in the above-mentioned external hanging operation steel platform, the closing plate 12 is arranged at the middle-lower part between the vertical connecting rods 8 connecting the main hanging longitudinal beams, so as to reduce the risk of falling of the constructors.
Preferably, the externally-hung operation steel platform further comprises four limiting steel bars 13, wherein the limiting steel bars 13 are vertically fixed on the tops of the corresponding prefabricated side walls 1, are positioned on the inner sides of the long main hanging longitudinal beams 3 or the short main hanging longitudinal beams 4, and are positioned on the outer sides of the corresponding transverse connecting rods 5. Through setting up four spacing reinforcing bars 13, can prevent external operation steel platform lateral shifting, improve the construction security.
Preferably, the external hanging operation steel platform further comprises limiting bolts 14, through holes for the limiting bolts 14 to pass through are formed in the positions, close to the long main hanging longitudinal beams 3, of the transverse connecting rods 5 located on the outer side, and the limiting bolts 14 penetrate through the corresponding through holes and then are respectively abutted to the side faces of the corresponding prefabricated side walls 1. By arranging the limiting bolt 14, the external operation steel platform can be prevented from transversely moving and longitudinally moving, and the construction safety is improved
Preferably, the external hanging operation steel platform further comprises two vertical rods 15, two horizontal steel wire ropes 16 and two oblique steel wire ropes 17, wherein the two vertical rods 15 are respectively arranged on the outer sides of the short main hanging longitudinal beams 4, the vertical rods 15 are fixedly arranged on a floor slab 18 of a corresponding floor, one ends of the horizontal steel wire ropes 16 are connected with the middle portions of the corresponding vertical connecting rods 8 of the long main hanging longitudinal beams 3, the other ends of the horizontal steel wire ropes 16 are horizontally connected to the vertical rods 15, one ends of the oblique steel wire ropes 17 are connected with the lower ends of the corresponding vertical connecting rods 8 of the long main hanging longitudinal beams 3, and the other ends of the horizontal steel wire ropes 16 are horizontally connected to the connecting portions of the horizontal steel wire ropes 16 and the vertical. By arranging the transverse steel wire rope 16 and the oblique steel wire rope 17, the external operation steel platform is fixed on the fixed part of the vertical rod 15 through the transverse steel wire rope 16 and the oblique steel wire rope 17, and the safety of the external operation steel platform can be further improved.
Preferably, in the above-mentioned external hanging operation steel platform, metal pull rings 19 are provided at the joints of the horizontal steel wire rope 16, the oblique steel wire rope 17 and the vertical connecting rod 8 and the joints of the horizontal steel wire rope 16, the oblique steel wire rope 17 and the vertical rod 15. Through the arrangement of the metal pull ring 19, on one hand, the transverse steel wire rope 16 and the oblique steel wire rope 17 can be conveniently fixed, and on the other hand, the transverse steel wire rope 16 and the oblique steel wire rope 17 can be protected.
Preferably, in the above external hanging operation steel platform, the top of the long main hanging longitudinal beam 3 is provided with two round steel 20 for installing an enclosure, and the enclosure is arranged between the two round steel 20, so as to reduce the risk of falling of constructors.
In order to ensure that the constructors can safely and conveniently go in and out of the externally hung steel operating platform, preferably, cross stepping rods 21 for the constructors to walk up and down are arranged between two vertical connecting rods 8 connected with a short main hanging longitudinal beam 4 at equal intervals.
Preferably, in the above-mentioned external hanging operation steel platform, a cross brace 22 is arranged between the long main hanging longitudinal beam 3 and the bottom of the platform, an inclined brace 23 is arranged between the lateral connecting rod 5 at the outer side and the bottom of the platform, and a lateral middle connecting rod 24 is arranged in the middle of two vertical connecting rods 8 connected to two ends of the lateral connecting rod 5 at the outer side. The overall strength of the externally-hung operation steel platform can be enhanced through the arrangement of the cross braces 22, the inclined braces 23 and the transverse middle connecting rods 24, and the construction safety is improved.
Preferably, the external hanging operation steel platform further comprises a middle hanging beam 25, wherein the middle hanging beam 25 is the same as the short main hanging longitudinal beam 4 in length and is arranged in the middle of the transverse connecting rod 5 to increase the contact area between the external hanging operation steel platform and the prefabricated side wall 1, so that the load of the external hanging operation steel platform is more uniformly distributed on the prefabricated side wall 1, and the construction safety is improved.
Preferably, the external hanging operation steel platform further comprises a skirting line 26, and the skirting line 26 is arranged on the bottom side inside the external hanging operation steel platform to prevent constructors from stepping empty and improve construction safety.
With continuing reference to fig. 1 to 8, the present invention further discloses a construction method (using method) of the above-mentioned external hanging operation steel platform, that is, a method for constructing a middle cantilever prefabricated wall 2 between two prefabricated side walls 1, including the following steps:
the working condition I is as follows: please refer to fig. 5, wherein the prefabricated side walls 1 at the two sides of the middle overhanging prefabricated wall 2 are hoisted in place and grouted;
working conditions are as follows: please refer to fig. 6, when the grouting mortar of the prefabricated side walls 1 on both sides reaches the design strength, the external hanging operation steel platform is installed, so that the long main hanging longitudinal beam 3 and the short main hanging longitudinal beam 4 are hung on the corresponding prefabricated side walls 1 respectively;
working conditions are as follows: please refer to fig. 7, the middle cantilever prefabricated wall 2 is hoisted in place and grouted, a constructor stands on an external hanging operation steel platform to install an inclined strut 27, the upper end of the inclined strut 27 is connected to the side surface of the middle cantilever prefabricated wall 2, and the lower end of the inclined strut 27 is connected to the side surface of the prefabricated side wall 1;
working conditions are as follows: please refer to fig. 8, when the grouting mortar strength of the middle cantilever prefabricated wall 2 reaches the designed strength, the inclined strut 27 is removed, and finally the external hanging operation steel platform is removed.
According to the construction method of the external hanging operation steel platform, the prefabricated side walls 1 on two sides of the middle externally-projecting prefabricated wall 2 are hoisted in place and grouted; when the grouting mortar of the prefabricated side walls 1 on the two sides reaches the design strength, the externally hung operation steel platform is installed, so that the long main hanging longitudinal beam 3 and the short main hanging longitudinal beam 4 are hung on the corresponding prefabricated side walls 1 respectively; the middle cantilever prefabricated wall 2 is hoisted in place and grouted, a constructor stands on an external hanging operation steel platform to install an inclined strut 27, the upper end of the inclined strut 27 is connected to the side surface of the middle cantilever prefabricated wall 2, and the lower end of the inclined strut 27 is connected to the side surface of the prefabricated side wall 1, so that the installation difficulty of the middle cantilever prefabricated wall 2 and the inclined strut 27 is effectively reduced, the need of erecting a scaffold on site is avoided, and a large amount of manpower and material resources are saved; and finally, removing the inclined strut 27 when the grouting mortar strength of the middle cantilever prefabricated wall 2 reaches the design strength, and finally removing the externally hung operating steel platform.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. An externally hung operating steel platform is used for constructing a middle overhanging prefabricated wall between two prefabricated side walls, and is characterized by comprising a square frame with a U-shaped cross section, wherein two sides of the square frame are hung on the prefabricated side walls respectively, a U-shaped groove of the square frame can be used for the middle overhanging prefabricated wall to pass through, the top of the square frame comprises a long main hanging longitudinal beam and two short main hanging longitudinal beams, the two short main hanging longitudinal beams are arranged on one side of the long main hanging longitudinal beam, each short main hanging longitudinal beam is connected with the long main hanging longitudinal beam through two transverse connecting rods, the transverse connecting rods are respectively and vertically connected with the short main hanging longitudinal beam and the long main hanging longitudinal beam, the transverse connecting rods on the inner side are connected between the inner side end of the short main hanging longitudinal beam and the long main hanging longitudinal beam, and the transverse connecting rods on the outer side are connected with the long main hanging longitudinal beam and the short main hanging longitudinal beam to ensure that the long main hanging longitudinal beam and the short main hanging longitudinal beam, the length of the outward extending part of the long main hanging longitudinal beam and the short main hanging longitudinal beam is at least 5 cm added for the width of the prefabricated side wall, a longitudinal connecting rod is arranged between two inner lateral connecting rods, the connecting part of the longitudinal connecting rod and the short main hanging longitudinal beam and the connecting part of the lateral connecting rod and the long main hanging longitudinal beam are respectively fixedly connected with the upper end of a vertical connecting rod, the lower end of the vertical connecting rod is connected with the bottom outer side connecting rod through the bottom outer side connecting rod, a bottom inner side connecting rod is arranged between the bottom outer side connecting rods, and the bottom outer side connecting rod and the bottom inner side connecting rod form a U-shaped area and a U-shaped area upper laying.
2. The externally hung operating steel platform according to claim 1, wherein a sealing plate is arranged at the middle lower part between the vertical connecting rods for connecting the main hanging longitudinal beams.
3. The externally hung operating steel platform according to claim 1, further comprising four limiting steel bars vertically fixed on the tops of the corresponding prefabricated side walls, positioned on the inner sides of the long main hanging longitudinal beams or the short main hanging longitudinal beams, and positioned on the outer sides of the corresponding transverse connecting rods.
4. The externally hung operating steel platform according to claim 1, further comprising limiting bolts, wherein through holes for the limiting bolts to pass through are formed in the positions, close to the long main hanging longitudinal beams, of the transverse connecting rods on the outer sides, and the limiting bolts penetrate through the corresponding through holes and then abut against the side faces of the corresponding prefabricated side walls.
5. The externally-hung operation steel platform according to claim 1, further comprising two vertical rods and two transverse steel wire ropes, wherein the two vertical rods are respectively arranged on the outer sides of the short main hanging longitudinal beams, the two transverse steel wire ropes are respectively arranged on the floor slabs of the corresponding floors, one ends of the transverse steel wire ropes are connected with the middle parts of the corresponding vertical connecting rods of the upper-connected long main hanging longitudinal beams, the other ends of the transverse steel wire ropes are horizontally connected to the vertical rods, one ends of the inclined steel wire ropes are connected with the lower ends of the corresponding vertical connecting rods of the upper-connected long main hanging longitudinal beams, and the other ends of the transverse steel wire ropes are horizontally connected to the connecting parts of the transverse steel wire.
6. The externally-hung operation steel platform according to claim 5, wherein metal pull rings are arranged at the joints of the transverse steel wire rope, the oblique steel wire rope and the vertical connecting rod and the joints of the transverse steel wire rope, the oblique steel wire rope and the vertical rod.
7. The externally hung operating steel platform as claimed in claim 1, wherein the top of the long main hanging longitudinal beam is provided with two round steel bars for installation and enclosure.
8. The externally hung operating steel platform according to claim 1, wherein a step cross bar for a constructor to walk up and down is arranged between two vertical connecting rods connected with a short main hanging longitudinal beam at equal intervals.
9. The externally hung operating steel platform according to claim 1, wherein a cross brace is arranged between the long main hanging longitudinal beam and the bottom of the platform, an oblique brace is arranged between the outer transverse connecting rod and the bottom of the platform, and a transverse middle connecting rod is arranged in the middle of two vertical connecting rods which are connected with two ends of the outer transverse connecting rod.
10. The construction method of the externally hung operating steel platform according to any one of claims 1 to 9, characterized by comprising the following steps:
the working condition I is as follows: hoisting the prefabricated side walls on two sides of the middle overhanging prefabricated wall in place and finishing grouting;
working conditions are as follows: when the grouting mortar of the prefabricated side walls on the two sides reaches the design strength, the externally hung operation steel platform is installed, so that the long main hanging longitudinal beam and the short main hanging longitudinal beam are respectively hung on the corresponding prefabricated side walls;
working conditions are as follows: hoisting the middle cantilever prefabricated wall in place, grouting, installing an inclined strut by a constructor standing on an external hanging operation steel platform, connecting the upper end of the inclined strut to the side surface of the middle cantilever prefabricated wall, and connecting the lower end of the inclined strut to the side surface of the prefabricated side wall;
working conditions are as follows: and (3) when the grouting mortar strength of the middle overhanging prefabricated wall reaches the design strength, dismantling the inclined strut, and finally dismantling the externally hung operating steel platform.
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