CN109629810B - Closed type overhanging scaffold and construction method - Google Patents
Closed type overhanging scaffold and construction method Download PDFInfo
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- CN109629810B CN109629810B CN201811634779.7A CN201811634779A CN109629810B CN 109629810 B CN109629810 B CN 109629810B CN 201811634779 A CN201811634779 A CN 201811634779A CN 109629810 B CN109629810 B CN 109629810B
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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
- E04G5/00—Component parts or accessories for scaffolds
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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
- E04G5/001—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
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
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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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Abstract
The invention discloses a closed cantilever scaffold system and a construction method thereof, wherein the closed cantilever scaffold system comprises a cantilever steel beam wall penetrating structure, wherein the cantilever steel beam wall penetrating structure is used for wall penetrating fixing construction of a section steel main beam; the overhanging steel beam balcony board placing structure is used for placing a balcony board and manufacturing an overhanging balcony; the closed cantilever scaffold system is used for building a scaffold; a high-altitude cantilever formwork protection shed is erected; the anchor of the girder steel wall structure of encorbelmenting simple to operate that adopts demolishs in a flexible way, can effectively improve the turnover high-usage, adopts integral pre-buried U-shaped pull ring that excels in, bracing steel pipe regularization even beam spare, avoids the balcony board to be crushed effectively, adopts adjustable pole setting crimping dead lever, wall post strenghthened type even wall pole, has widened scaffold application range, adopts the high altitude to encorbelment a mould double-deck protection canopy, has reduced the safe risk in the outrigger setting, is favorable to safe construction.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a closed cantilever scaffold system and a construction method, and is particularly suitable for construction of the closed cantilever scaffold system.
Background
In recent years, with the increasing number of urban buildings, the form of the scaffold is in a diversified development trend, and the cantilever scaffold is widely used due to the large operation range, material saving, low cost, simple and convenient erection, safety and reliability. The steel pipe is adopted as supporting mechanism to traditional cantilever frame, and stability is relatively poor, and the cantilever frame all adopts shaped steel as the supporting in recent years, and the fixed way of cantilever shaped steel girder steel is different, and most adopt traditional round steel lantern ring, can not reach the requirement usually during the system of bending, and the construction is inconvenient and stability is relatively poor moreover, and is extravagant big, and the cost drops into much.
The structural style of the currently generally adopted section steel cantilever scaffold is divided into an upper suspension diagonal type and a lower diagonal type, wherein the upper suspension diagonal type is that a steel wire rope is added at the end part of a section steel cantilever beam extending out of the structure to be diagonal (or a steel bar ring is pre-embedded on a floor slab, an extending cross beam is inserted into the ring, a frame is erected on a transverse horizontal component), and then an external frame body is cantilevered. The method needs more section steel, large holes need to be reserved at the positions of the shear wall and the column, decoration of the outer wall is inconvenient, and due to the fact that the section steel is very long, dismantling is inconvenient and danger is easy to occur. The lower inclined strut type overhanging scaffold is formed by adding an inclined strut below the end part of a section steel cantilever beam. The upper suspension diagonal-pulling type is better than the lower diagonal-pulling type in effect, but the upper suspension diagonal-pulling type is not convenient in use as the lower diagonal-pulling type is analyzed from the aspects of materials, manufacture, installation and disassembly, labor conditions and the like of the section steel cantilever scaffold.
The construction characteristics of the high formwork with the high-altitude large cantilever structure are as follows: the construction technology of the closed cantilever scaffold system is a new topic and has very obvious practical significance in order to achieve advanced technology, economy, reasonability, quality guarantee and safety guarantee, and the construction technology is large in span, high in height, large in construction load and high in construction difficulty.
Disclosure of Invention
The closed cantilever scaffold system and the construction method have the advantages that the anchoring device of the cantilever steel beam wall penetrating structure is convenient to install, flexible to dismantle, high in turnover utilization rate and capable of effectively improving, the integral high-strength pre-embedded U-shaped pull ring and the diagonal bracing steel tube forming connecting beam piece are adopted, the male plate is effectively prevented from being crushed, the adjustable vertical rod crimping fixing rod and the wall column reinforced connecting wall rod are adopted, the use range of the scaffold is widened, the high-altitude cantilever formwork double-layer protection shed is adopted, safety risks in building of an outer frame are reduced, and safe construction is facilitated.
In order to achieve any one of the above purposes, the invention discloses a construction method of a closed cantilever scaffold system, which comprises the following steps:
the invention discloses a construction method of a closed cantilever scaffold system, which comprises the following steps: 1) construction preparation; 2) arranging an embedded part, a steel wire rope guide pipe and a reserved main rod hole of a wall body; 3) mounting and constructing a vertical wall pasting plate and a shaped wall penetrating piece bottom plate on the outer side in a backward unfolding mode; 4) installing a shaped lower connecting piece of the diagonal bracing steel pipe; 5) mounting and constructing the corner steel beam combined clamp; 6) paving a heightened rigid base plate and a balcony flexible base plate; 7) mounting a through-wall section steel cantilever beam; 8) installing a diagonal steel wire rope of the through-wall section steel cantilever beam; 9) installing an inclined strut assembly steel pipe at the overhanging balcony slab; 10) installing a fixed rod adjustable compression joint end plate; 11) installing a unit type upright rod fixing rod; 12) the fixed main rod is installed and connected; 13) erecting an overhanging scaffold system; 14) constructing a cantilever scaffold system at the shear wall; 15) constructing an overhanging scaffold system at the frame column; 16) constructing a cantilever scaffold system at the opening; 17) constructing a lower steel pipe net rack of the protective shed; 18) installing an inclined steel pipe and an inclined steel wire rope of the protective shed; 19) constructing an upper steel pipe net rack of the protective shed; 20) installing a steel pipe inclined strut and a steel pipe net rack vertical strut; 21) a hanging dense mesh type safety net and 22) installing a closed steel pipe frame side protection and warning strip.
According to another aspect of the present invention, there is provided a closed cantilever scaffold system comprising: the cantilever steel beam wall penetrating structure is used for wall penetrating fixing construction of the section steel main beam; the overhanging steel beam balcony board placing structure is used for placing and fixing the section steel main beam at the overhanging balcony; the closed cantilever scaffold system is used for building a scaffold; a high-altitude cantilever formwork protection shed is built.
The invention has the following outstanding advantages and remarkable effects:
the cantilever steel beam wall-penetrating structure effectively ensures the stability and safety of the cantilever steel beam by means of the I-shaped steel beams which are cantilevered one by one, thereby providing a premise for smooth construction of a formwork support of the cantilever structure.
2 the invention adopts the integral high-strength embedded U-shaped pull ring, the structural design is novel, the raised rigid backing plate and the balcony top flexible backing plate can ensure that the balcony board is not stressed and carried, the problem that the overhanging steel beam balcony board is inconvenient to place when the frame beam is deeper is well solved, the balcony board can be effectively prevented from being crushed, the appearance is simple and attractive, the economic benefit is outstanding, and the popularization prospect is good.
The adjustable vertical rod crimping fixing rod and the wall column reinforced wall connecting rod are adopted, the structural design is reasonable and novel, the distance between the scaffold can be conveniently adjusted through the adjustable vertical rod crimping fixing rod, the application range of the scaffold is widened, the wall column reinforced wall connecting rod can effectively guarantee the connection stability of the scaffold system at the position of a wall connecting point, and the wall column reinforced wall connecting rod has a good popularization prospect.
4 the high-altitude cantilever formwork protection shed is formed by combining an upper layer of steel pipe net rack and a lower layer of steel pipe net rack, has novel and reasonable structural design, meets the requirements of structural stress and safety, and provides guarantee for external safety protection of main engineering.
Drawings
FIG. 1 is an installation view of formwork lifting system formwork in the integral construction of a pool floor and side walls according to an embodiment of the present invention.
Figure 2 is a detailed structural schematic view of an inboard integral tie plate within an overhanging steel beam construction according to an embodiment of the present invention.
Fig. 3 is a side view of the anchoring apparatus of the section steel main beam according to an embodiment of the present invention.
Fig. 4 is a sectional view of a steel girder anchoring apparatus according to an embodiment of the present invention.
FIG. 5 is a detailed construction view of an outboard, rearwardly extending vertical wall panel according to an embodiment of the present invention.
Fig. 6 is a detailed construction view of an inside packing retainer riser according to an embodiment of the invention.
Fig. 7 is a top view of a steel girder anchoring device at a corner of a wall according to an embodiment of the present invention.
Figure 8 is a block diagram of a stylized two plate pair clip lock plate secondary beam quick connect fixture, according to one embodiment of the present invention.
Fig. 9 is a detailed construction diagram of a finalized two-plate clamp girder corner quick-connect fixture according to an embodiment of the present invention.
Fig. 10 is a configuration diagram of an upper pressing disk plate according to an embodiment of the present invention.
Fig. 11 is a detailed construction diagram of a stylized two-plate pair clip lock plate secondary beam quick connect fixture, according to an embodiment of the present invention.
Figure 12 is a schematic diagram of a transverse cross-sectional configuration of a one-piece pre-buried U-shaped tab according to an embodiment of the present invention.
Figure 13 is a longitudinal cross-sectional installation schematic view of a one-piece pre-buried U-shaped tab according to an embodiment of the present invention.
Fig. 14 is a construction view of a sprag assembled steel pipe according to an embodiment of the present invention.
Fig. 15 is a schematic view of a cantilever scaffold system fixing structure with a shear wall according to an embodiment of the invention.
FIG. 16 is a schematic diagram of an adjustable horizontal linkage in a planar configuration according to an embodiment of the present invention.
Fig. 17 is a schematic view of a cantilever scaffold system in the presence of a frame column according to an embodiment of the present invention.
Fig. 18 is a schematic view of a cantilever scaffold system fixing structure with a hole according to an embodiment of the invention.
FIG. 19 is a schematic view of a simplified modular pillar construction according to an embodiment of the present invention.
Fig. 20 is a schematic view of the installation of the high-altitude cantilever formwork protection shed according to an embodiment of the invention.
FIG. 21 is a schematic diagram of a dual-layer shelter according to an embodiment of the present invention.
Fig. 22 is a schematic view of a main beam finalized tilt block installation according to an embodiment of the present invention.
FIG. 23 is a schematic view of the installation of a double-layer shelter formwork according to an embodiment of the present invention.
In the figure: 1-section steel main beam, 2-floor slab, 3-wall body, 4-floor slab preformed hole, 5-wall body preformed hole, 6-floor slab embedded anti-skid nail, 7-enlarged steel plate bottom plate, 8-isolation sleeve, 9-bolt rod, 10-screw cap, 11-upper pressing plate, 12-connecting plate horizontal wood wedge, 13-vertical wood wedge, 14-wood wedge pressing side plate, 15-section steel bottom steel base plate, 16-shaped wall penetrating piece bottom plate, 17-outer side rear expanding vertical pasting plate, 18-inner side plugging limiting vertical plate, 19-shaped double-plate oppositely-clamped main beam corner fast-connection clamp, 20-shaped double-plate oppositely-clamped secondary beam fast-connection clamp, 21-shaped section steel beam section steel wire rope fixing piece, 22-diagonal steel wire rope, 23-wall column preformed hole, 24-steel wire rope guide pipe, 25-inner integral type pull plate, 26-overhanging balcony, 27-frame beam, 28-integral type embedded U-shaped pull ring, 29-pull ring belt stud connecting plate, 30-connecting plate fixing support, 31-shaped steel beam fastening rib frame, 32-heightening rigid base plate, 33-balcony top flexible base plate, 34-lower floor slab, 35-lower floor slab embedded stud rod, 36-lower frame beam embedded stud rod, 37-inclined strut assembly steel pipe, 38-steel pipe assembly, 39-inclined strut steel pipe shaping lower connecting piece, 40-inclined strut steel pipe shaping upper connecting piece, 41-unit type vertical rod, 42-fixed rod adjustable crimping end plate, 43-scaffold vertical rod, 44-scaffold cross rod, 45-scaffold floor sweeping rod, 46-a shear brace, 47-a tool type splicing guardrail, 48-a guardrail fixed cross beam, 49-a wall reserved main rod hole, 50-a wall inner side connecting plate, 51-a connecting fixed main rod, 52-a wall outer side fastening plate, 53-an adjustable horizontal connecting rod, 54-a wall column inner side steel frame, 55-a connecting frame square timber, 56-a steel frame sliding rear fastening ear plate, 57-a square timber fastening section steel, 58-a fastening connecting rod, 59-a hole fixing frame, 60-a simple shaping connecting column piece, 61-a cantilever frame main beam, 62-a main beam shaping inclination adjusting block, 63-a cantilever frame secondary beam, 64-a full-spread safety net, 65-a shock absorption square, 66-a full-spread scaffold plate, 67-an upper layer steel pipe net rack, 68-a steel pipe net rack vertical supporting rod, 69-a full-spread iron net piece, 70-side protection of a closed steel pipe frame, 71-diagonal steel wire ropes of a protective shed, 72-diagonal steel pipes, 73-bolts, 74-steel wire rope clamps, 75-square battens, 76-hinges, 77-main beam connecting pieces, 78-secondary beam connecting pieces, 79-right angle connecting pieces, 80-wall clamps, 81-lower fixing disc plates, 82-main beam connecting pieces, 83-profile steel cantilever beam connecting pieces, 84-bolt holes of cantilever beam connecting pieces, 85-main beam connecting piece bolt holes, 86-upper pressing disc plates, 87-secondary beam connecting clamp quick connecting clamp bolt holes, 88-cantilever beam connecting piece bolts, 89-bolts with handles, 90-side plates of the secondary beam quick connecting clamp, 91-top plate of the secondary beam quick connecting clamp, 92-side hanging plates of the secondary beam quick connecting clamp, 93-bottom plate of the secondary beam quick connecting clamp, and, 94-secondary beam quick connecting fixture side plate bolt holes, 95-crimping end plate fixing pieces, 96-U-shaped fixing pull rings, 97-scaffold longitudinal rods, 98-frame beam main ribs, 99-connecting plate studs, 100-connecting fasteners, 101-connecting fixing secondary rods, 102-adjusting bolt barrels, 103-frame columns, 104-embedded pieces, 105-cantilever frame main beam embedded fixing bolts, 106-cantilever frame main beam fixing nuts, 107-steel pipe inclined struts, 108-warning strips and 109-dense mesh type safety nets.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in fig. 1 to 23, the closed cantilever scaffold system at least includes: the cantilever steel beam wall penetrating structure is used for wall penetrating fixing construction of the section steel main beam (1); the overhanging steel beam balcony board placing structure is used for placing and fixing a section steel main beam (1) at an overhanging balcony (26); the closed cantilever scaffold system is used for building a scaffold; a high-altitude cantilever formwork protection shed is built.
The structure of the cantilever steel beam wall-penetrating structure is as follows:
the cantilever steel beam wall penetrating structure is arranged on a floor (2) and a wall (3), wherein a floor pre-embedded anti-skid nail (6) and a floor preformed hole (4) are arranged on the floor (2), a wall preformed hole (5) and a wall column preformed hole (26) are arranged on the wall (3), the cantilever steel beam wall penetrating structure comprises a section steel main beam (1), an enlarged steel plate bottom plate (7), an isolation sleeve (8), a bolt rod (9), a nut (10), an upper pressing plate (11), a connecting plate horizontal wood wedge (12), a vertical wood wedge (13), a wood wedge pressing side plate (14), a section steel bottom plate (15), a stereotyped wall penetrating piece bottom plate (16), an outer side post-exhibition vertical wall pasting plate (17), an inner side plug limiting vertical plate (18), a stereotyped double-plate pair-clamp corner quick-connection clamp (19), a stereotyped double-plate pair-clamp belt locking plate secondary beam quick-connection clamp (20), a stereotyped section steel wire rope fixing piece (21), A cable-stayed steel wire rope (22), a steel wire rope guide pipe (24) and an inner integral pulling plate (25), wherein the section steel girder (1) passes through a wall body preformed hole (5), a shaped wall penetrating bottom plate (16) is arranged at the bottom of the wall body preformed hole (5), an enlarged steel plate bottom plate (7) is arranged in a floor slab preformed hole (4), and the bolt bar (9) is welded on the enlarged steel plate bottom plate (7), the bottom of the section steel girder (1) is padded with a section steel bottom plate backing plate (15), the section steel bottom backing plate (15) passes through the enlarged steel plate bottom plate (7), the upper side of the end part of the section steel girder (1) is provided with a shaped section steel beam section steel wire rope fixing part (21), one end of a diagonal steel wire rope (22) is fixed on the shaped section steel beam section steel wire rope fixing part (21), the other end is fixedly connected with an inner integral pulling plate (25), wherein the inner integral type pulling plate (25) is provided with a stud (73) which is pre-embedded in the wall body (3).
As shown in fig. 1 and 2, the steel wire rope guide pipe (24) is arranged in a wall column preformed hole (23), the inclined pull steel wire rope (22) penetrates through the steel wire rope guide pipe (24) and then is fixed on the inner integral pulling plate (25) and is solidified through the steel wire rope clamp (74), and the steel wire rope fixing piece (21) of the shaped steel beam section is welded and fixed with the end part of the steel main beam (1).
As shown in fig. 3 and 4, the isolation sleeve (8) is sleeved on the bolt rod (9) through the floor preformed hole (4) so as to facilitate the later removal of the bolt rod (9). In addition, the anchor device of the section steel main beam (1) on the floor (2) adopts a detachable bolt rod (9), a connecting plate horizontal wood wedge (12) is placed on the upper portion of a wing plate of the section steel main beam (1), the section steel main beam (1) is I-shaped, a web plate of the I-shaped section steel main beam (1) is pressed by a vertical wood wedge (13), a wood wedge pressing side plate (14) is used between the section steel main beam (1) and the bolt rod (9) for pressing, and an upper pressing plate (11) is placed between the connecting plate horizontal wood wedge (12) and the wood wedge pressing side plate (14) and fixed by a nut (10).
As shown in fig. 1 and 5, the outer side backward-unfolding vertical wall attaching plate (17) is arranged on the outer side surface of the bottom of the wall preformed hole (5), and a rotatable hinge (76) design is adopted, so that the installation and the disassembly of the steel girder (1) are facilitated.
As shown in fig. 1 and 6, the inner side plugging limiting vertical plate (18) is pre-embedded in the inner side surface of the upper part of the wall preformed hole (5) and is mainly used for fastening the section steel main beam (1), and at least one batten (75) is inserted into a gap between the inner side plugging limiting vertical plate (18) and the wall (3) during fixing.
As shown in fig. 7, a shaped steel main beam (1) adopts a shaped double-plate oppositely-clamped main beam corner fast-connecting clamp (19) to fix a connecting beam main beam (77) and an overhanging shaped steel main beam (1) at a corner of a wall body (3), a shaped double-plate oppositely-clamped locking plate secondary beam fast-connecting clamp (20) is used for fixing the connecting beam main beam (77) and a connecting beam secondary beam (78), and a connecting beam secondary beam fast-connecting clamp pin hole (87) is formed in the connecting secondary beam (78).
As shown in fig. 9 and 10, the finalized double-plate opposite-clamping girder corner quick-connection fixture (19) is composed of a lower fixing disc plate (81), a connecting girder connecting piece (82), a section steel cantilever beam connecting piece (83) and an upper pressing disc plate (86), the connecting girder connecting piece (82) and the section steel cantilever beam connecting piece (83) are welded on the lower fixing disc plate (81), an included angle between the connecting girder connecting piece (82) and the section steel cantilever beam connecting piece (83) is 45 degrees, the connecting girder connecting piece (82) and the section steel cantilever beam connecting piece (83) are respectively provided with a connecting girder connecting piece bolt hole (85) and a cantilever beam connecting piece bolt hole (84), the connecting girder connecting piece (82) and the section steel cantilever beam connecting piece (83) are respectively inserted into corners of the connecting girder connecting piece (77) and the section steel girder (1), the lower fixing disc plate (81) and the upper pressing disc plate (86) are aligned and pressed tightly, and a cantilever beam connecting piece bolt (88) is adopted for consolidation, and a connecting beam main beam connecting piece bolt hole (85) is also fixed by a bolt.
As shown in fig. 8 and 11, the finalized double-plate pair clamp locking plate secondary beam quick-connection fixture (20) is composed of bolts (89) with handles, secondary beam quick-connection fixture side plates (90), a secondary beam quick-connection fixture top plate (91), secondary beam quick-connection fixture side hanging plates (92), a secondary beam quick-connection fixture bottom plate (93) and secondary beam quick-connection fixture side plate bolt holes (94), wherein the secondary beam quick-connection fixture side hanging plates (92) are hung on a connecting beam main beam (77), and the connecting beam secondary beam (78) is inserted between the secondary beam quick-connection fixture side plates (90) and is fixed by the bolts (89) with handles.
The structure of the overhanging steel beam balcony slab laying structure is as follows:
the integral pre-buried U-shaped pull ring (28) is pre-buried in the frame beam (27), the lower part of the integral pre-buried U-shaped pull ring (28) is provided with a pull ring belt stud connecting plate (29), and the pull ring belt stud connecting plate (29) is connected with the two end sides of the integral pre-buried U-shaped pull ring (28); the lower part of the tie-strip bolt nail connecting plate (29) is provided with a connecting plate fixing support (30), and a section steel beam fastening rib frame (31) passes through the integral pre-embedded U-shaped pull ring (28) and is arranged at the top of the section steel main beam (1) to clamp and solidify the top of the section steel main beam (1).
The upper part of the diagonal bracing assembly steel pipe (37) is welded with the upper connecting piece (40) of the diagonal bracing steel pipe shaping, the upper connecting piece (40) of the diagonal bracing steel pipe shaping is welded on the section steel main beam (1), so that the upper part of the diagonal bracing assembly steel pipe (37) is welded with the section steel main beam (1) through the upper connecting piece (40) of the diagonal bracing steel pipe shaping, and the supporting effect can be achieved, thereby avoiding the stress of the overhanging balcony (26).
The lower part of the diagonal brace assembling steel pipe (37) is welded with an L-shaped diagonal brace steel pipe shaping lower connecting piece (39), the diagonal brace steel pipe shaping lower connecting piece (39) is fixedly connected to the lower floor slab (34) through a lower floor slab embedded bolt rod (35) and a lower frame beam embedded bolt rod (36), and therefore the lower part of the diagonal brace assembling steel pipe (37) is fixed on the lower floor slab (34) through the diagonal brace steel pipe shaping lower connecting piece (39).
Before the section steel main beam (1) is fixed, the section steel main beam (1) is heightened by utilizing a heightening rigid base plate (32) on a frame beam (27) to avoid stress of an overhanging balcony (26), and in addition, the section steel main beam (1) is heightened by utilizing a balcony top flexible base plate (33) on the overhanging balcony (26).
As shown in fig. 1 and 14, the diagonal bracing sectional steel pipe (37) can be formed into a unit by using a steel pipe sectional component (38), thereby facilitating welding fixation.
The closed cantilever scaffold system has the following structure:
closed scaffold system of encorbelmenting includes scaffold pole setting (43), scaffold horizontal pole (44), scaffold floor-sweeping rod (45) and scaffold vertical pole (97), wherein scaffold horizontal pole (44) are connected with scaffold vertical pole (97) and are constituted scaffold system's whole frame, scaffold pole setting (43) and scaffold vertical pole (97) set up perpendicularly, scaffold floor-sweeping rod (45) are connected in scaffold horizontal pole (44) near ground, in order to guarantee that scaffold system is firm, be equipped with between at least two scaffold pole settings (43) in the outside and strut (46), wherein scaffold pole setting (43) are connected through connecting fastener (100) to the slant in strut (46).
The scaffold upright rod (43) on the side is fixedly connected with the connecting and fixing main rod (51), the connecting and fixing main rod (51) penetrates through the wall body (3) through a main rod hole (49) reserved in the wall body, and the connecting and fixing main rod (51) and the wall body (3) are fastened by utilizing a wall body outer side fastening plate (52) and a wall body inner side connecting plate (50).
The bottom of the scaffold upright rod (43) is fixedly connected with the unit upright rod fixing rod (41) in a crimping mode through a crimping end plate fixing piece (95), and then the bottom of the scaffold upright rod is fixed on the fixing rod adjustable crimping end plate (42), wherein the unit upright rod fixing rod (51) is fixed on the fixing rod adjustable crimping end plate (42); the unit type upright rod fixing rods (41) are distributed at equal intervals, so that the interval of the scaffold system can be adjusted.
When the scaffold frame body is tied to meet a shear wall, an adjustable horizontal connecting rod (53) can be adopted to be connected with an external scaffold; when the scaffold frame system meets the frame column (103) and the opening, the tightening steel bar (57) can be fixed by using the steel frame (54) and the square wood on the inner side of the wall column.
As shown in fig. 15 and 16, the adjustable horizontal connecting rod (53) is connected to the scaffold upright rod (43), the adjustable horizontal connecting rod (53) is provided with at least one preformed hole for connecting the fixed secondary rods (101), so that one adjustable horizontal connecting rod (53) can be connected to a plurality of fixed secondary rods (101), and the other end of the adjustable horizontal connecting rod (53) is connected to the fixed main rod (51).
As shown in figure 1, the fixed rod adjustable crimping end plate (42) is arranged at the upper part of the section steel main beam (1), and the upper part of the section steel main beam is provided with preformed holes of the unit type vertical rod fixed rods (41) at equal intervals, so that the interval adjustment of the unit type vertical rod fixed rods (41) can be realized.
As shown in fig. 17 and 18, when the closed cantilever scaffold system encounters a frame column (103) and/or a hole, a frame connecting square timber (55) is firstly laid on the outer side of the frame column (103) and/or the wall body (3) of the hole, and a wall column inner side steel frame (54) is installed, at this time, the frame connecting square timber (55) is laid between the wall column inner side steel frame (54) and the frame column (103), and then the steel frame on the wall column inner side steel frame (54) is slid and then an ear plate (56) is fastened for fixing; the square timber sets up in the inboard steelframe (54) outside of wall post to tight shaped steel (57), and the square timber has filled up between tight shaped steel (57) and the inboard steelframe (54) of wall post and has had even a frame square timber (55), the square timber is through realizing fastening connecting rod (58) tight shaped steel (57) and the inboard steelframe (54) of wall post, adjacent two square timbers are connected through connecting fastener (100) between tight shaped steel (57), also fasten through connecting fastener (100) and being connected fixed mobile jib (51).
As shown in fig. 18, when the closed cantilever scaffold system meets a cave opening, the closed cantilever scaffold system needs to be butted by the cave opening fixing frame (59) between the two connecting and fixing main rods (51) and is fixed by locking the adjusting bolt barrel (102), so that the construction safety of the cantilever scaffold system at the cave opening is effectively ensured.
As shown in fig. 19, the closed cantilever scaffold frame system can also adopt a simple and stereotyped connecting column member (60) on a column, studs are pre-embedded in the wall body (3), and then the splicing member is sleeved on the studs, so that the installation is convenient.
The structure of the high-altitude cantilever formwork protection shed is as follows:
as shown in fig. 20 to 23, the present invention mainly includes: the device comprises an overhanging frame main beam (61), a main beam shaping and inclination adjusting block (62), an overhanging frame secondary beam (63), a full-spread safety net (64), a damping batten (65), a full-spread scaffold board (66), an upper layer steel pipe net rack (67), a steel pipe net rack vertical strut (68), a full-spread iron net sheet (69), a closed steel pipe rack side protection (70), a diagonal steel wire rope (71) of a protection shed, a diagonal steel pipe (72), an embedded part (104), an overhanging frame main beam embedded fixing bolt (105), an overhanging frame main beam fixing nut (106), a steel pipe diagonal strut (107), an alarm strip (108) and a dense mesh type safety net (109); one end of an overhanging frame main beam (61) is fixed on a floor slab (2), the other end of the overhanging frame main beam is tensioned and unloaded by using a diagonal steel wire rope (71) of a protective shed, the overhanging frame main beam (61) is arranged in an upward inclining mode and is mainly realized by a main beam shaping inclination adjusting block (62) arranged on the floor slab (2), and one end of the overhanging frame main beam (61) is arranged on the main beam shaping inclination adjusting block (62); the secondary beam (63) of the cantilever frame is erected above the main beam (61) of the cantilever frame to splice the cantilever frame; the cable-stayed steel wire rope (71) of the protective shed is fixed on an embedded part (104) arranged at the floor slab (2), and the embedded part (104) protrudes from the surface of the floor slab (2); an upper-layer steel pipe net rack (67) is arranged above the cantilever frame main beam (61), steel pipe net rack vertical support rods (68) are arranged on the side surface of the cantilever frame main beam (61) at equal intervals, and a full and dense mesh type safety net (109) is hung between the upper-layer steel pipe net rack (67) and the steel pipe net rack vertical support rods (68) for protection.
As shown in fig. 1, the end of the section steel main beam (1) is provided with a tool type splicing guardrail (47), and the tool type splicing guardrails (47) are connected into a whole through a guardrail fixing cross beam (48), so that the construction safety of a scaffold system can be ensured; the inclined steel wire ropes (71) and the inclined steel pipes (72) of the protective shed are arranged at intervals, so that the function of interval unloading can be achieved; the end part of the secondary beam (63) of the cantilever frame is also provided with a diagonal steel pipe (72) which mainly plays a role of bearing tension and load to ensure the safety of the protective shed, and the other end of the diagonal steel pipe (72) is fixed on the floor slab (2) through a pre-embedded fixing bolt (105) of the main beam of the cantilever frame and a fixing nut (106) of the main beam of the cantilever frame.
As shown in fig. 20 and 21, steel pipe diagonal braces (107) are further arranged near the end portions of the secondary cantilever beams (63) and the upper steel pipe net rack (67), so that the overall stability of the secondary cantilever beams (63) and the upper steel pipe net rack (67) is enhanced, and meanwhile, one ends of the steel pipe diagonal braces (107) are connected with the diagonal steel pipes (72), and the other ends of the steel pipe diagonal braces are connected with the closed steel pipe rack side protection (70).
As shown in fig. 1 and 22, the girder finalized tilt adjusting block (62) is provided at the end of the floor (2) and used for adjusting the inclination angle of the cantilever girder (61), the girder finalized tilt adjusting block (62) is padded at the lower part of the cantilever girder (61), and after the proper angle is adjusted, the cantilever girder (61) is fixed on the floor (2) by using the cantilever girder pre-embedded fixing bolt (105) and the cantilever girder fixing nut (106).
As shown in fig. 23, the full-paved safety net (64) is fully paved on the secondary beam (63) of the cantilever frame, the damping battens (65) are paved on the full-paved safety net (64), and the full-paved scaffold boards (66) are paved on the damping battens (65); fully paving an iron net sheet (69) and fully paving a secondary cantilever frame beam (63) at the upper part of the upper-layer steel pipe net rack (67); the end parts of the secondary beam (63) of the cantilever frame and the upper steel pipe net rack (67) are provided with a closed steel pipe rack side protection (70), and the outer side of the closed steel pipe rack side protection (70) is provided with a warning strip (108).
As shown in fig. 1 to 23, the construction method of the closed cantilever scaffold system comprises the following steps:
1) construction preparation: measuring and paying off, selecting the sizes of a section steel main beam (1), a wood wedge pressing side plate (14), a section steel bottom steel base plate (15), a connecting beam main beam (77), a connecting beam secondary beam (78), an overhanging frame main beam (61), an overhanging frame secondary beam (63), a closed steel pipe frame side protection (70) and the like, selecting the types and sizes of steel pipes of a scaffold upright rod (43) and the like, selecting the diameters of a diagonal steel wire rope (22) and a diagonal steel wire rope (71) of a protection shed, preparing construction equipment, and inspecting all incoming materials;
2) arranging an embedded part, a steel wire rope guide pipe and a wall body reserved main rod hole: when the reinforced concrete beam and slab at the lower layer of the overhanging layer are poured, the floor (2) is provided with pre-buried anti-skid nails (6) and pre-buried bolt rods (9) with enlarged steel plate bottom plates (7), and the wall (3) is provided with wall preformed holes (5) and inner side plugging limiting vertical plates (18), so that the installation of the section steel girder (1) is facilitated;
in order to ensure the stability of the section steel main beam (1), a reserved main rod hole (23) and an inner integral pulling plate (25) are arranged on the wall body (3), so that the diagonal steel wire rope (22) is convenient to fix;
when meeting a balcony (26) needing to be overhung, the integral pre-buried U-shaped pull ring (28) needs to be accurately positioned and installed by adopting a connecting plate fixing support (30) when meeting the frame beam (27) with a deeper depth, the connecting plate fixing support (30) is erected on a main rib (98) of the frame beam, a pull ring belt bolt connecting plate (29) is installed on the connecting plate fixing support (30), then the integral pre-buried U-shaped pull ring (28) is installed, a lower floor slab pre-buried bolt rod (35) is arranged on a lower floor slab (34), and a lower frame beam pre-buried bolt rod (36) is arranged on the frame beam (27); in order to conveniently set up a scaffold system, a wall body is reserved with a main rod hole (49); in order to install the protective shed, an embedded part (104) and an embedded fixing bolt (105) of a main beam of the cantilever frame are required to be arranged on a floor slab (2);
3) the installation and construction of the outer side rear-unfolding vertical wall pasting board and the stereotyped wall penetrating piece bottom board are as follows: a shaped wall-penetrating bottom plate (16) is arranged at the bottom of the wall body preformed hole (5), and an outer side backward-unfolding vertical wall-sticking plate (17) is arranged on the outer side of the wall body (3) at the bottom of the wall body preformed hole (5) so as to be convenient for accurate positioning during installation of the section steel beam (1);
4) installing a connecting piece under the sizing of the diagonal bracing steel pipe: when encountering an overhanging balcony (26), before installing the section steel main beam (1), an L-shaped diagonal bracing steel pipe shaped lower connecting piece (39) is required to be installed and fixed on a lower floor slab (34) by using a lower floor slab embedded bolt rod (35) and a lower frame beam embedded bolt rod (36);
5) installing and constructing the corner steel beam combined clamp: the method comprises the following steps that a section steel main beam (1) adopts a shaped double-plate oppositely-clamped main beam corner quick-connection clamp (19) to fix a connecting beam main beam (77) and the section steel main beam (1) at a corner of a wall body (3), the section steel main beam (1) is respectively inserted into a connecting beam main beam connecting piece (82) and a section steel cantilever beam connecting piece (83) at the corner, a lower fixing disc plate (81) is aligned and pressed with an upper pressing disc plate (86) and is solidified by adopting a cantilever beam connecting piece bolt (88), and a connecting beam main beam connecting piece bolt hole (85) is also fixed by adopting a bolt;
6) paving a heightened rigid base plate and a balcony flexible base plate: when the overhanging balcony (26) is encountered, the steel girder (1) needs to be heightened by utilizing a heightened rigid base plate (32) on the frame beam (27) before the steel girder (1) is fixed, and in order to avoid the stress of the overhanging balcony (26), the steel girder (1) needs to be heightened by utilizing the heightened rigid base plate (32) on the overhanging balcony (26);
7) installing a through-wall section steel cantilever beam: after the section steel main beam (1) penetrates through a wall preformed hole (5), except for being fixed by a floor pre-embedded anti-skid nail (6), a web plate of the I-shaped section steel main beam (1) is compressed by a vertical wood wedge (13), a wood wedge compression side plate (14) is used between the section steel main beam (1) and a bolt rod (9) for compression, an upper pressing plate (11) is placed between a connecting plate horizontal wood wedge (12) and the wood wedge compression side plate (14), and the connecting plate horizontal wood wedge (12) and the wood wedge compression side plate (14) are fixed by a screw cap (10);
8) installing an inclined steel wire rope of the through-wall section steel cantilever beam: the cable-stayed steel wire rope (22) penetrates through the steel wire rope guide pipe (24), then is fixed on the integral pull plate (25) at the inner side and is fixedly connected through the steel wire rope clamp (74), and the other end of the cable-stayed steel wire rope (22) is fixed with the steel wire rope fixing piece (21) of the shaped steel beam section and is welded and fixed with the end part of the section steel girder (1);
9) the bracing piece spelling steel pipe of balcony board department of encorbelmenting of installation: firstly, the diagonal bracing assembly steel pipe (37) adopts a steel pipe assembly (38) to form a unit, then the upper part of the diagonal bracing assembly steel pipe (37) is welded with a diagonal bracing steel pipe shaping upper connecting piece (40), and the lower part is welded with an L-shaped diagonal bracing steel pipe shaping lower connecting piece (39);
10) install adjustable crimping end plate of dead lever: the fixed rod adjustable crimping end plate (42) is welded on the upper part of the section steel main beam (1), and the upper part of the fixed rod adjustable crimping end plate is provided with preformed holes of the unit type vertical rod fixed rods (41) at equal intervals, so that the interval adjustment of the unit type vertical rod fixed rods (41) can be realized;
11) installing a unit type upright rod fixing rod: the unit type upright rod fixing rod (41) is installed at a reserved hole of the unit type upright rod fixing rod (41) on the fixing rod adjustable compression joint end plate (42) according to construction requirements;
12) the fixed mobile jib of installation connection: the connecting and fixing main rods (51) penetrate through the wall body (3) through the main rod holes (49) reserved in the wall body, and then are fastened by using the wall body outer side fastening plate (52) and the wall body inner side connecting plate (50);
13) building an overhanging scaffold system: the method comprises the following steps that a scaffold upright rod (43), a scaffold cross rod (44), a scaffold floor sweeping rod (45), a cross brace (46) and a scaffold longitudinal rod (97) are spliced into an integral frame of a scaffold system, and the cross brace (46) is arranged between unit type upright rod fixing rods (41) on the outermost side in order to ensure the stability of the scaffold system;
14) constructing a cantilever scaffold system at the shear wall: when the scaffold frame body is tied to meet a shear wall, an adjustable horizontal connecting rod (53) can be adopted to be connected with an external scaffold;
15) the construction of the overhanging scaffold system at the frame column: when the closed cantilever scaffold system meets a frame column (103), a square timber (55) is firstly connected to the outer side of a wall body (3) of the frame column (103) in a stacking mode, then a wall column inner side steel frame (54) is installed, and then a steel frame on the wall column inner side steel frame (54) is slid to tightly clamp an ear plate (56) for fixing; the square wood abutting-against section steel (57) is arranged on the outer side of the steel frame (54) on the inner side of the wall column, the square wood abutting-against section steel (57) and the steel frame (54) on the inner side of the wall column are fastened through an abutting-against connecting rod (58), and the two square wood abutting-against section steel (57) are connected with the connecting and fixing main rod (51) through a connecting fastener (100);
16) and (3) constructing a cantilever scaffold system at the opening: when the closed cantilever scaffold system meets a hole, except that a steel frame (54) on the inner side of a wall column and square timber abutting steel sections (57) are adopted for installation, the closed cantilever scaffold system needs to be abutted by a hole fixing frame (59) between two connecting and fixing main rods (51) and is fixed by locking an adjusting bolt barrel (102), so that the construction safety of the cantilever scaffold system at the hole is effectively ensured;
17) constructing a lower steel pipe net rack of the protective shed: the cantilever frame main beam (61) should be inclined upwards and mainly realized through a main beam shaping and inclination adjusting block (62), a cantilever frame secondary beam (63) is erected above the cantilever frame main beam (61), one end of the cantilever frame main beam (61) is fixed on a floor slab (2), the other end of the cantilever frame main beam is tensioned and unloaded by using a diagonal steel wire rope (71) of a protective shed, a fully-paved safety net (64) is fully paved on the cantilever frame secondary beam (63), a damping batten (65) is paved on the fully-paved safety net (64), and a fully-paved scaffold board (66) is paved on the damping batten (65);
18) the installation draws steel pipe and protection canopy to one side draws wire rope: the cable-stayed steel wire ropes (71) of the protection shed are fixed on embedded parts (104) at the floor slab (2), cable-stayed steel pipes (72) are further arranged at the end parts of the secondary beams (63) of the cantilever frames, the cable-stayed steel pipes are mainly used for bearing tension and supporting load and ensuring the safety of the protection shed, and the other ends of the cable-stayed steel pipes (72) are fixed on the floor slab (2);
19) constructing an upper steel pipe net rack of the protective shed: fully paving an iron net sheet (69) and fully paving a secondary cantilever frame beam (63) at the upper part of the upper-layer steel pipe net rack (67);
20) installing a steel pipe inclined strut and a steel pipe net rack vertical strut: the steel pipe net rack vertical support rods (68) are arranged on the side surface of the cantilever frame main beam (61) at equal intervals;
21) hanging a dense mesh type safety net: an upper-layer steel pipe net rack (67) is arranged above the cantilever frame main beam (61), and a dense mesh type safety net (109) is hung between the upper-layer steel pipe net rack (67) and the steel pipe net rack vertical supporting rod (68) for protection;
22) installing a closed steel pipe frame side protection and warning strip: the end parts of the secondary beam (63) of the cantilever frame and the upper steel pipe net rack (67) are provided with a closed steel pipe rack side protection (70), and the outer side of the closed steel pipe rack side protection (70) is provided with a warning strip (108).
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (10)
1. The construction method of the closed cantilever scaffold system is characterized by comprising the following steps of:
1) construction preparation:
measuring and paying off, selecting the sizes of a section steel main beam (1), a wood wedge pressing side plate (14), a section steel bottom steel base plate (15), a connecting beam main beam (77), a connecting beam secondary beam (78), an overhanging frame main beam (61), an overhanging frame secondary beam (63) and a closed steel pipe frame side protection (70), selecting the steel pipe model and size of a scaffold upright rod (43), selecting the diameters of a diagonal steel wire rope (22) and a diagonal steel wire rope (71) of a protection shed, and preparing construction equipment;
2) arranging an embedded part, a steel wire rope guide pipe and a wall body reserved main rod hole:
arranging pre-embedded anti-skid nails (6) and pre-embedded bolt rods (9) with enlarged steel plate bottom plates (7) on a floor slab (2), arranging pre-embedded parts (104) and pre-embedded fixing bolts (105) of a main beam of the cantilever frame; the wall body (3) is provided with a wall body reserved hole (5), an inner side plugging limit vertical plate (18), an inner side integral pulling plate (25) of a reserved main rod hole (23) and a wall body reserved main rod hole (49); erecting a connecting plate fixing support (30) on a frame beam main rib (98), installing a stretched-ring belt stud connecting plate (29) on the connecting plate fixing support (30), then installing an integral pre-embedded U-shaped pull ring (28), arranging a lower-layer floor pre-embedded stud rod (35) on a lower-layer floor (34), and arranging a lower-layer frame beam pre-embedded stud rod (36) on a frame beam (27);
3) the installation and construction of the outer side rear-unfolding vertical wall pasting board and the stereotyped wall penetrating piece bottom board are as follows:
a shaped wall penetrating bottom plate (16) is arranged at the bottom of the wall body preformed hole (5), and an outer backward-unfolding vertical wall pasting plate (17) is arranged on the outer side of the wall body (3) at the bottom of the wall body preformed hole (5);
4) installing a connecting piece under the sizing of the diagonal bracing steel pipe:
firstly, installing and fixing an L-shaped diagonal bracing steel pipe shaped lower connecting piece (39) on a lower floor slab (34) by using a lower floor slab embedded bolt rod (35) and a lower frame beam embedded bolt rod (36);
7) installing a through-wall section steel cantilever beam:
after a section steel main beam (1) penetrates through a wall preformed hole (5), a floor pre-embedded anti-skid nail (6) is fixed on a floor (2), a web plate of an I-shaped section steel main beam (1) is compressed by a vertical wood wedge (13), a wood wedge compression side plate (14) is used for compressing between the section steel main beam (1) and a bolt rod (9), a connecting plate horizontal wood wedge (12) is placed on the section steel main beam (1), an upper pressure plate (11) is placed on the connecting plate horizontal wood wedge (12) and the wood wedge compression side plate (14), and the connecting plate horizontal wood wedge and the wood wedge compression side plate (14) are fixed by a screw cap (10);
8) installing an inclined steel wire rope of the through-wall section steel cantilever beam:
the cable-stayed steel wire rope (22) penetrates through the steel wire rope guide pipe (24) and then is fixed on the integral pull plate (25) at the inner side and is fixedly connected through a steel wire rope clamp (74), and the other end of the cable-stayed steel wire rope (22) is fixed with the steel wire rope fixing piece (21) of the shaped steel beam section;
9) the bracing piece spelling steel pipe of balcony board department of encorbelmenting of installation:
welding the upper part of the diagonal bracing assembly steel pipe (37) with a diagonal bracing steel pipe shaped upper connecting piece (40), and welding the lower part of the diagonal bracing assembly steel pipe (37) with an L-shaped diagonal bracing steel pipe shaped lower connecting piece (39);
10) install adjustable crimping end plate of dead lever:
the fixed rod adjustable crimping end plate (42) is welded on the upper part of the section steel main beam (1), and the upper part of the fixed rod adjustable crimping end plate is provided with preformed holes of unit type upright rod fixed rods (41) at equal intervals;
11) installing a unit type upright rod fixing rod:
the unit type upright rod fixing rod (41) is installed on the fixing rod adjustable compression joint end plate (42);
12) the fixed mobile jib of installation connection:
the connecting and fixing main rod (51) penetrates through the wall body (3) through a main rod hole (49) reserved in the wall body, and the connecting and fixing main rod (51) is fastened by a wall body outer side fastening plate (52) and a wall body inner side connecting plate (50);
13) building an overhanging scaffold system:
assembling scaffold upright rods (43), scaffold cross rods (44), scaffold floor sweeping rods (45), cross braces (46) and scaffold longitudinal rods (97), wherein the scaffold cross rods (44) and the scaffold longitudinal rods (97) are assembled into an integral frame of a scaffold system, the scaffold upright rods (43) and the scaffold longitudinal rods (97) are vertically arranged, the scaffold floor sweeping rods (45) are connected to the scaffold cross rods (44) close to the ground, and the cross braces (46) are arranged between the unit upright rod fixing rods (41) on the outermost side;
17) constructing a lower steel pipe net rack of the protective shed:
the cantilever frame main beam (61) is obliquely arranged on the floor slab (2) through a main beam sizing and inclination adjusting block (62), the other end of the cantilever frame main beam is tensioned and unloaded by using a diagonal steel wire rope (71) of the protective shed, and the cantilever frame secondary beam (63) is erected above the cantilever frame main beam (61);
18) the installation draws steel pipe and protection canopy to one side draws wire rope:
the diagonal steel wire rope (71) of the protective shed is fixed on an embedded part (104) at the floor (2), the end part of the secondary beam (63) of the cantilever frame is also provided with a diagonal steel pipe (72), and the other end of the diagonal steel pipe (72) is fixed on the floor (2);
19) constructing an upper steel pipe net rack of the protective shed:
an upper-layer steel pipe net rack (67) is arranged above the main beam (61) of the cantilever frame;
20) installing a steel pipe inclined strut and a steel pipe net rack vertical strut:
the steel pipe net rack vertical support rods (68) are arranged on the side surface of the cantilever frame main beam (61) at equal intervals; and
21) hanging a dense mesh type safety net:
a dense mesh type safety net (109) is hung between the upper layer steel pipe net rack (67) and the vertical stay bar (68) of the steel pipe net rack for protection.
2. The method of constructing a closed cantilever scaffold system according to claim 1, comprising, before step 7):
step 5), mounting and constructing the angle steel beam combined clamp:
the fixed even roof beam girder (77) of shaped steel girder (1) adopts regularization double plate to press from both sides girder corner fast tying fixture (19) in the corner of wall body (3) and shaped steel girder (1), shaped steel girder (1) inserts even roof beam girder connecting piece (82) and shaped steel cantilever beam connecting piece (83) respectively in the corner, lower part fixed disc board (81) and last disc pressure strip (86) align to compress tightly to adopt cantilever beam connecting piece bolt (88) to consolidate, even roof beam girder connecting piece bolt hole (85) also adopt the bolt to fix.
3. The method of constructing a closed cantilever scaffold system according to claim 1, comprising, before step 7:
step 6), laying a heightening rigid base plate and a balcony flexible base plate:
before the section steel main beam (1) is fixed, the section steel main beam (1) is heightened by utilizing a heightening rigid base plate (32) on a frame beam (27), and the section steel main beam (1) is heightened by utilizing a balcony top flexible base plate (33) on an overhanging balcony (26).
4. The method of constructing a closed cantilever scaffolding system according to claim 1 wherein, after step 13), when the scaffolding system encounters a shear wall, the method comprises:
step 14), construction of a cantilever scaffold system at the shear wall:
adopt adjustable horizontal connecting rod (53) to be connected with outer scaffold frame, adjustable horizontal connecting rod (53) are connected in scaffold frame pole setting (43), are equipped with the preformed hole of at least one connection fixed time pole (101) on adjustable horizontal connecting rod (53), can realize that an adjustable horizontal connecting rod (53) connects a plurality of connections fixed time pole (101), and fixed mobile jib (51) is connected to adjustable horizontal connecting rod (53) other end connection.
5. The method of construction of a closed cantilever scaffolding system according to claim 1, characterized in that, after step 13), when the scaffolding system encounters the frame post (103), it comprises:
step 15) construction of the overhanging scaffold system at the frame column:
a square timber (55) is connected with the outer side of the wall body (3) of the frame column (103) in a stacking mode, then the wall column inner side steel frame (54) is installed, and then the steel frame on the wall column inner side steel frame (54) is slid to tightly clamp the ear plate (56) for fixing; the square timber is to tight shaped steel (57) setting in the wall post inboard steelframe (54) outside, and the square timber is to tight shaped steel (57) and wall post inboard steelframe (54) through realizing the fastening to tight connecting rod (58), and two square timbers are to being connected through being connected fastener (100) and being connected fixed mobile jib (51) between tight shaped steel (57).
6. The construction method of the closed cantilever scaffold system according to claim 1, wherein after the step 13), when the scaffold system meets the opening, comprising the steps of:
step 16) constructing a cantilever scaffold system at the hole:
the wall column inner side steel frame (54) and the square timber are adopted to install the tightening steel section (57), the two connecting and fixing main rods (51) are butted by the hole fixing frame (59), and the adjusting bolt barrel (102) is locked and fixed.
7. The construction method of the closed cantilever scaffold system according to claim 1, comprising the steps of:
step 22) installing a side protection and warning strip of the closed steel pipe frame:
the end parts of the secondary beam (63) of the cantilever frame and the upper steel pipe net rack (67) are provided with a closed steel pipe rack side protection (70), and the outer side of the closed steel pipe rack side protection (70) is provided with a warning strip (108).
8. The construction method of the closed cantilever scaffold system according to claim 1, wherein in step 17: fully laying a safety net (64) on the secondary beam (63) of the cantilever frame, laying a damping batten (65) on the fully laying safety net (64), and laying a fully laying scaffold plate (66) on the damping batten (65).
9. Closed cantilever scaffold system, its characterized in that includes:
the cantilever steel beam wall penetrating structure is used for wall penetrating fixing construction of the section steel main beam (1);
the overhanging steel beam balcony board placing structure is used for placing and fixing a section steel main beam (1) at an overhanging balcony (26);
the closed cantilever scaffold system is used for building a scaffold;
a high-altitude cantilever formwork protection shed is erected;
wherein the girder steel balcony board of encorbelmenting shelves the structure and includes: the frame beam (27), the integral pre-buried U-shaped pull ring (28) and the diagonal bracing assembly steel pipe (37), and the frame beam (27) is arranged on the bottom side of the section steel main beam (1); the integral pre-buried U-shaped pull ring (28) is pre-buried in the frame beam (27), a pull ring belt stud connecting plate (29) is arranged at the lower part of the integral pre-buried U-shaped pull ring (28), and a connecting plate fixing support (30) is arranged at the lower part of the pull ring belt stud connecting plate (29); the upper part of the diagonal brace assembling steel pipe (37) is connected with the section steel main beam (1), and the lower part is connected with the lower floor slab (34) and is obliquely arranged;
wherein closed cantilever scaffold system includes: a scaffold upright rod (43), a scaffold cross rod (44), a scaffold floor sweeping rod (45) and a scaffold vertical rod (97); the scaffold cross rods (44) are connected with the scaffold vertical rods (97), and the scaffold vertical rods (43) and the scaffold vertical rods (97) are vertically arranged; wherein the scaffold upright stanchion (43) at the side is fixedly connected with the connecting and fixing main pole (51), and the connecting and fixing main pole (51) passes through the wall body (3) through the reserved main pole hole (49) of the wall body; the bottom of the scaffold upright rod (43) is fixedly connected with the unit upright rod fixing rod (41) in a crimping way through a crimping end plate fixing piece (95) and is fixed on the adjustable crimping end plate (42) of the fixing rod;
when the closed cantilever scaffold system is applied to a shear wall, the scaffold upright rod (43) is connected with the adjustable horizontal connecting rod (53); when the closed cantilever scaffold system is applied to a frame column (103) and a hole, the connecting and fixing main rod (51) is connected with the square wood tightening section steel (57), and the square wood tightening section steel (57) is matched with a wall column inner side steel frame (54) to be fixed;
the high-altitude cantilever formwork protection shed comprises a cantilever frame main beam (61), a cantilever frame secondary beam (63) and an upper-layer steel pipe net rack (67); the secondary beam (63) of the cantilever frame is erected above the main beam (61) of the cantilever frame to splice the cantilever frame; one end of the cantilever frame main beam (61) is fixed on the floor (2), the other end of the cantilever frame main beam is tensioned and unloaded by using a diagonal steel wire rope (71), and the cantilever frame main beam (61) is arranged on a main beam shaping and inclination adjusting block (62) on the floor (2) in an upward inclining mode; an upper-layer steel pipe net rack (67) is arranged above the cantilever frame main beam (61), steel pipe net rack vertical support rods (68) are arranged on the side surface of the cantilever frame main beam (61) at equal intervals, and a full and dense mesh type safety net (109) is hung between the upper-layer steel pipe net rack (67) and the steel pipe net rack vertical support rods (68) for protection.
10. The closed cantilever scaffold system according to claim 9,
oblique-pulling steel pipes (72) are further arranged at the end parts of the secondary beams (63) of the cantilever frames, the other ends of the oblique-pulling steel pipes (72) are fixed on the floor slab (2), oblique-pulling steel wire ropes (71) and the oblique-pulling steel pipes (72) of the protective shed are arranged at intervals of one cloth, safety nets (64) are fully paved on the secondary beams (63) of the cantilever frames, damping battens (65) are paved on the full-paving safety nets (64), and scaffold boards (66) are fully paved on the damping battens (65);
the upper part of the diagonal brace assembling steel pipe (37) is welded with the diagonal brace steel pipe shaping upper connecting piece (40) and welded on the section steel main beam (1), and the lower part of the diagonal brace assembling steel pipe (37) is welded with the diagonal brace steel pipe shaping lower connecting piece (39) and fixedly connected on the lower floor slab (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634779.7A CN109629810B (en) | 2018-12-29 | 2018-12-29 | Closed type overhanging scaffold and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634779.7A CN109629810B (en) | 2018-12-29 | 2018-12-29 | Closed type overhanging scaffold and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109629810A CN109629810A (en) | 2019-04-16 |
| CN109629810B true CN109629810B (en) | 2021-02-09 |
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| CN117432191A (en) * | 2023-11-14 | 2024-01-23 | 中建二局第三建筑工程有限公司 | Construction method of overhanging formwork frame of refuge layer and overhanging formwork frame |
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