CN110952764A - Externally hung type externally hung overhanging scaffold - Google Patents
Externally hung type externally hung overhanging scaffold Download PDFInfo
- Publication number
- CN110952764A CN110952764A CN201911148434.5A CN201911148434A CN110952764A CN 110952764 A CN110952764 A CN 110952764A CN 201911148434 A CN201911148434 A CN 201911148434A CN 110952764 A CN110952764 A CN 110952764A
- Authority
- CN
- China
- Prior art keywords
- wall
- externally
- hung
- building
- scaffold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 44
- 239000010959 steel Substances 0.000 claims description 44
- 238000010276 construction Methods 0.000 abstract description 18
- 238000009435 building construction Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 22
- 210000001503 joint Anatomy 0.000 description 12
- 238000003466 welding Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000010408 sweeping Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000009436 residential construction Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical group N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007589 penetration resistance test Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Movable Scaffolding (AREA)
Abstract
The invention relates to building construction, in particular to an externally hung overhanging scaffold, which comprises: the external hanging bracket is used for being arranged on the outer side of the building; the cantilever beam is arranged at the lower part of the external hanging bracket and is used for supporting the external hanging bracket; one end of the pull rod is connected with the cantilever beam, and the other end of the pull rod is fixedly connected to a building; one end of the cantilever beam is provided with a supporting part which is fixedly connected with the outer wall of the building. Adopt the external hanging scaffold project of encorbelmenting, do not influence the outer wall brickwork construction on layer of encorbelmenting, the outer wall need not to open the hole, but significantly reduced arouses the hidden danger of outer wall seepage because of repairing the entrance to a cave.
Description
Technical Field
The invention relates to building construction, in particular to an externally hung overhanging scaffold.
Background
Scaffolding is a variety of supports erected on a construction site for workers to handle and address vertical and horizontal transport. The scaffold is mainly used for up-and-down operation of constructors or peripheral safety net enclosure, high-altitude installation components and the like. At present, during construction of a plurality of buildings and floors and construction of outer wall brickwork, a cantilever beam of a scaffold needs to be erected on a floor slab, when the scaffold needs to penetrate through a shear wall or a column, the cantilever beam needs to penetrate through the shear wall or the column in order to be erected on the floor slab, and a hole needs to be formed in a wall body of the shear wall or the column for installing the scaffold, so that quality and potential safety hazards are left for outer wall leakage.
Disclosure of Invention
The invention aims to provide an externally-hung overhanging scaffold which does not need to form holes on a shear wall or a main member to erect overhanging beams when the scaffold is erected.
In order to realize above-mentioned purpose, the technical scheme that this application adopted is outer hanging type scaffold frame of encorbelmenting, include:
the external hanging bracket is used for being arranged on the outer side of the building;
the cantilever beam is arranged at the lower part of the external hanging bracket and is used for supporting the external hanging bracket;
one end of the pull rod is connected with the cantilever beam, and the other end of the pull rod is fixedly connected to a building;
one end of the cantilever beam is provided with a supporting part which is fixedly connected with the outer wall of the building.
Adopt the external hanging scaffold project of encorbelmenting, do not influence the outer wall brickwork construction on layer of encorbelmenting, the outer wall need not to open the hole, but significantly reduced arouses the hidden danger of outer wall seepage because of repairing the entrance to a cave.
Further, the pull rod comprises an upper section, a middle section and a lower section; the middle section is a basket sleeve, the basket sleeve comprises sleeve parts which are positioned at two ends and connected with an upper section end and a lower section end respectively, and the sleeve parts at the two ends are connected through connecting ribs which are circumferentially distributed on the excircle of the sleeve parts.
Through setting up foretell flower basket sleeve, with the fastening pull rod of flower basket sleeve, guarantee its stress state more easily than traditional adoption wire rope. The upper section can be connected with the wall body through bolts.
The connection of the pull rod and the wall body can adopt bolt connection, namely, a plate body attached to the wall body is arranged at one end of the upper section, which is used for being connected with the wall body, and the pull rod is connected to the wall body through bolts penetrating through the plate body.
Furthermore, the number of the pull rods is at least one, and the connecting nodes of the pull rods and the cantilever beams are sequentially arranged along the direction departing from the building.
Further, a lower bracket for supporting the cantilever beam is arranged at the lower side of the cantilever beam so as to improve the supporting strength.
Furthermore, one end of the lower support is connected with the free end of the cantilever beam, the other end of the lower support is fixedly connected with the outer wall of the building, and the outer wall of the building, the cantilever beam and the lower support form a triangular fixed structure.
Further, above-mentioned supporting part is including the backup pad that is used for with building outer wall laminating, trompil in the above-mentioned backup pad, and this backup pad is used for with building outer wall fixed connection through the bolt that wears to establish in this hole.
Further, the support plate is a bent plate corresponding to the building external corner.
Further, the support plate comprises a barb which is embedded in the wall. When the barb is arranged, the barb is pre-embedded in the wall body, so that the cantilever beam can be firmly fixed on the wall body or the structural beam.
Furthermore, the connection between the upper section and the wall body and the connection between the cantilever beam and the wall body can be fixed by bolts, sleeves embedded in the wall body are sleeved outside the bolts, and the subsequent scaffold is convenient to disassemble through the embedded sleeves, namely the bolts are convenient to take out.
Furthermore, the outer wall of the sleeve is welded with the steel bars positioned in the wall body.
Furthermore, the external bracket is provided with an external bracket wall connecting piece which is fixedly connected with the floor slab extending outwards of the building, and the wall connecting piece extends longitudinally and is used for extending into the floor slab extending outwards of the building and fixedly connected with the floor slab.
The invention also provides a construction method for constructing the externally hung overhanging scaffold, which comprises the following steps:
1) embedding a sleeve or a plate with a barb and a rod in the wall;
2) arranging a cantilever beam, wherein one end of the cantilever beam is fixedly connected with a plate pre-embedded at the other side of the wall body through a bolt penetrating through a sleeve;
3) building an external hanging bracket of the scaffold on the cantilever beam and fixedly connecting the external hanging bracket with the embedded rod piece;
6) installing a pull rod, connecting one end of the pull rod with the cantilever beam, and connecting the other end of the pull rod with the wall body, wherein the pull rod consists of an upper section, a middle section and a lower section, the middle section is a basket sleeve, the upper section and the lower section are respectively sleeved at two ends of the basket sleeve, and the pull rod is fastened by the basket sleeve 320;
7) arranging a scissor brace;
8) paving scaffold boards, binding protection and foot blocking boards and vertically hanging safety nets.
The externally-hung overhanging scaffold built according to the method not only can better guarantee efficiency and safety, but also can greatly reduce the using amount of profile steel by fixing the end of the overhanging beam on a wall body compared with the traditional overhanging profile steel fixing mode by erecting the overhanging beam on a floor slab, and can be manufactured in a shaping mode, so that the cost is saved, and the externally-hung overhanging scaffold is attractive and practical.
Furthermore, when the pull rod is installed, the upper section of the pull rod is installed firstly, so that the upper section is connected with the wall body, then the lower section and the middle section basket are installed, the basket is rotated to a pre-tightening state, and the pre-tightening tension of the pull rod is kept consistent.
Furthermore, when the external hanging bracket of the scaffold is built, the upright rods and the large cross rods are fastened by adopting right-angle fasteners; the vertical rod lengthening is characterized in that except for the top step of the top layer, joints of the other layers are connected by adopting butt fasteners, and the joints are staggered by 0.5 section; the lap joint positions of the upper and lower cross bars are staggered, wherein the distance between the upper and lower cross bars is less than 500mm, and the grab bar is horizontally arranged at the high position of 0.4-0.6 m of each step.
Furthermore, when the scissors braces are arranged, the scissors braces are fully arranged and continuously arranged along the height; the connecting angle parts of the inclined rods and the vertical rods are fastened by rotary fasteners, the included angle between the inclined rods and the vertical rods is 45-60 degrees, the nodes of the cross braces are arranged on the same horizontal and vertical lines, the extension of the nodes adopts lap joint, the length of the lap joint is more than or equal to 1000mm, and the number of the fasteners adopted by the lap joint structure is more than or equal to 3; two ends of each cross brace are respectively connected with the vertical rod and the big cross rod, 2-3 nodes connected with the vertical rod or the big cross rod are arranged in the middle of each cross brace, and a small cross rod is arranged at the intersection of the vertical rod and the big cross rod.
Furthermore, when the plate is pre-embedded, a hook-shaped part is welded on one side of the plate and is pre-embedded in the wall.
Further, the external hanging support and the embedded rod piece are fixedly connected to lock the small cross rod and the embedded rod piece through a fastener.
Further, the embedded rod pieces are steel pipes which are vertically arranged on a horizontal floor slab or a wall body table board.
Furthermore, the external hanging bracket of the scaffold is erected to fasten the connecting nodes by fasteners, and the fasteners are selected and inspected after the erection is finished; and actually measuring by using a torque wrench, judging whether the torque is 40-65 N.m, if the torque is reached, meeting the requirement, and if the torque exceeds the range, not meeting the requirement. Too small a size will cause the fastener to slip easily, while too large a size will cause the cast iron of the fastener to break.
Furthermore, a sleeve pipe pre-embedded in the wall body is welded with the main rib in the wall body. The main reinforcement is the reinforcing steel bar of the wall body, so that the cast concrete is prevented from vibrating and deviating, and the fixing effect is achieved.
Furthermore, when the cantilever beam is arranged at the external corner of the wall body, the end of the cantilever beam, which is used for being connected with the wall body, is provided with a bending plate matched with the external corner of the wall body, and the bending plate is fixedly connected with the wall body.
The invention is further described with reference to the following figures and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description. Or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to assist in understanding the invention, and are included to explain the invention and their equivalents and not limit it unduly. In the drawings:
fig. 1 is a schematic view for explaining the construction of a residential building by using an externally hung overhanging scaffold of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic side view for explaining the application of the externally hung overhanging scaffold of the present application to a corner position for residential construction;
fig. 4 is a schematic top view for illustrating the application of the externally hung overhanging scaffold of the present application to a corner position for residential construction;
fig. 5 is a schematic view for explaining a wall connecting member of the externally hung overhanging scaffold of the present application;
fig. 6 is a schematic view illustrating a flower basket sleeve of a drawbar of the externally hung overhanging scaffold of the present application;
labeled as: 1-external hanging bracket, 2-cantilever beam, 210-lower bracket, 220-supporting part, 221-supporting plate, 3-pull rod, 310-upper segment, 320-basket sleeve, 321-sleeve part, 322-connecting rib, 330-lower segment, 4-embedded plate, 410-plate body, 420-barb, 5-sleeve pipe and 6-wall connecting part.
Detailed Description
The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before the present invention is described in detail with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.
Moreover, the embodiments of the present invention described in the following description are generally only examples of a part of the present invention, and not all examples. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
With respect to terms and units in the present invention. The term "comprises" and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.
Referring to fig. 1-6, the externally hung overhanging scaffold comprises:
the external hanging bracket 1 is used for being arranged on the outer side of a building;
the cantilever beam 2 is arranged at the lower part of the external hanging bracket 1 and is used for supporting the external hanging bracket 1;
one end of the pull rod 3 is connected with the cantilever beam 2, and the other end of the pull rod 3 is fixedly connected to a building;
one end of the cantilever beam 2 is provided with a support part 220 for fixedly connecting with the outer wall of the building.
The above-mentioned tie rod 3 includes upper node 310, middle node and lower node 330; the middle section is a basket sleeve 320, the basket sleeve 320 comprises sleeve parts 321 which are positioned at two ends and respectively connected with the end of the upper section 310 and the end of the lower section 330, and the sleeve parts 321 at the two ends are connected through connecting ribs 322 which are circumferentially distributed on the outer circle of the sleeve parts 321. The number of the pull rods 3 is at least one, and the connecting nodes of the pull rods 3 and the cantilever beams 2 are sequentially arranged along the direction departing from the building.
The lower bracket 210 for supporting the cantilever beam 2 is provided at the lower side of the cantilever beam 2 to improve the supporting strength. One end of the lower bracket 210 is connected with the free end of the cantilever beam 2, the other end of the lower bracket is fixedly connected with the outer wall of the building, and the outer wall of the building, the cantilever beam 2 and the lower bracket 210 form a triangular fixing structure. I.e. here the lower carriage is supported back. Both the cantilever beam and the lower support can adopt I-steel.
The support portion 220 includes a support plate 221 for attaching to the outer wall of the building, the support plate 221 is provided with a hole, and the support plate 221 is used for being fixedly connected to the outer wall of the building through a bolt passing through the hole. At the corner of the building, the supporting plate 221 may be a bent plate corresponding to the external corner of the building.
Referring to fig. 2, two ways may be adopted for fixing the supporting plate 221, one way is to provide a barb 420 embedded in the wall on one side of the supporting plate 221. Here, the cantilever beam 2 can be stably installed on the wall body by embedding the barb 420.
In another embodiment, an inner sleeve 5 embedded in a wall body is sleeved outside the bolt, and the outer walls of the sleeves 5 are welded together through steel bars. This allows for more convenient removal. Fig. 2 is a diagram of the two ways taken together, an alternative implementation being possible in practice.
The external hanging bracket 1 is provided with a wall connecting piece 6 which is fixedly connected with a floor slab extending outwards of the building, and the wall connecting piece 6 extends longitudinally and is fixedly connected with the floor slab and extends into the floor slab extending outwards of the building.
Adopt this outer hanging scaffold of encorbelmenting to be under construction 13 layers of house of a certain, wherein adopt console mode fastener scaffold frame below 8 layers, adopt this outer hanging scaffold of encorbelmenting to be under construction as major structure and fitment outer wall heat preservation at 8 layers and above.
The method mainly comprises the following steps:
1) embedding a sleeve 5, an embedded rod piece and an embedded plate on one side of the wall body, which is far away from the scaffold, in the wall body;
2) arranging a cantilever beam 2, wherein one end of the cantilever beam 2 is fixedly connected with a plate pre-embedded at the other side of the wall body through a bolt penetrating through a sleeve 5;
3) an external hanging bracket 1 of the scaffold is built on the cantilever beam 2, and the external hanging bracket 1 is fixedly connected with the embedded rod piece;
6) installing a pull rod 3, connecting one end of the pull rod 3 with the cantilever beam 2, and connecting the other end of the pull rod 3 with a wall body, wherein the pull rod 3 consists of an upper section 310, a middle section and a lower section 330, the middle section is a basket sleeve 320, the upper section 310 and the lower section 330 are respectively sleeved at two ends of the basket sleeve 320, and the pull rod 3 is fastened by the basket sleeve 320;
7) arranging a scissor brace;
8) paving scaffold boards, binding protection and foot blocking boards and vertically hanging safety nets.
Before construction, the quality of materials must be strictly controlled, qualified materials are used, and the structural requirements of the support system are strictly set according to the requirements of specifications. Before the scaffold is erected, scaffold rods, accessories (new and old materials) and the like entering a field are strictly checked and can be used after relevant requirements are met. After the erection is finished, whether the fastening of a certain number of fasteners meets the requirements or not is checked, the torque wrench can be used for actual measurement, if the fastening reaches 40-65 N.m, the fasteners are easy to slide if the fastening is too small, and cast iron of the fasteners is broken if the fastening is too large. The quality of erection is checked after the external overhanging scaffold is erected, and the scaffold erection needs to meet the requirement: horizontal and vertical, firm connection, safe loading, safe operation space, no deformation and no shaking.
Selecting the steel pipe material of the scaffold: the steel pipe comprises upright rods, large cross rods, small cross rods, cross braces, wall connecting rods and the like; the steel pipe is selected to be 48.3mm in outer diameter, 3.6mm in wall thickness and Q235-A in steel strength grade, the material of the steel pipe is a No. 3 common steel pipe specified in the national current standard of straight seam electric welding steel pipe (GB/T13793-2008) or welding steel pipe for low-pressure fluid transportation (GB/T3091-2008), the quality of the steel pipe is in accordance with the requirement of Q235-A grade steel in the current national standard of carbon structural steel (GB700-2007), the surface of the steel pipe is straight and smooth, and the steel pipe is free from cracks, layering, indentation, scribing and hard bending, and the newly used steel pipe is required to have a factory pass certificate. Before scaffold construction, an incoming steel pipe is sampled and sent to a test unit with related national qualification for carrying out mechanical tests such as bending resistance, tensile resistance and the like on the steel pipe, and after a test result meets design requirements, the steel pipe can be used in construction. The external hanging bracket 1 brushes red and white paint on the bridging and skirting board, and the paint brushing needs to meet the requirement of the Chinese construction CI. The exposed lengths of the small cross rod steel pipes are unified to be 100 mm.
The fastener that uses the scaffold is selected: the fastener that this scaffold engineering adopted is total three kinds: right angle fasteners, rotational fasteners and butt fasteners. The size of the fastener must be matched with the diameter of the steel pipe to ensure the strict shaping of the binding surface and good contact during fastening. The quality of the fastener meets the current standard in China, and the fasteners with the defects of unqualified processing, corrosion, cracks and the like are forbidden to be used. The movable part of the fastener can flexibly rotate, and the gap between the two rotating surfaces of the rotating fastener is smaller than 1 mm.
The external hanging bracket 1 of the scaffold board adopts a steel bas net scaffold board, the scaffold board is paved and stably paved and bound firmly, and the scaffold board is fully paved in a gap between the scaffold board and a structural wall body, so that the scaffold board is ensured to be not more than 150mm away from the peripheral structure finishing surface.
The cantilever beam 2 is made of I-steel, and the I-steel is 16-size I-steel. The length of the overhanging part of the I-steel is determined according to a plane layout drawing of the overhanging part bracket 1, and one end of the I-steel is fully welded with a steel plate of 200mm multiplied by 180mm multiplied by 12mm (the height of a welding line is not less than 8mm after being processed by a professional manufacturer). The distance between the other end of the double-sided welding connecting steel plate and the outer side line is 200mm, the thickness of the double-sided welding connecting steel plate is 15mm, and a hole phi 26 is reserved (the length of a welding line is 150mm as long as that of the connecting plate, and the height of the welding line is not less than 8mm after the double-sided welding connecting steel plate is machined by a professional manufacturer).
The used draw bar 3 adopts the draw bar 3 of M20 as a drawing and connecting component of the cantilever beam 2.
The joints of the cantilever beams 2 and the wall body of the embedded bolt sleeves 5 are fixed by high-strength bolts, the pull rods 3 and the wall body are fixed by bolts, and phi 22 sleeves 5 are embedded in advance.
The safety net adopts a dense mesh type safety net, the mesh size of the net is required to meet 2000 meshes/100 cm2, penetration resistance test is carried out, the weight of a single net with the thickness of 1.6 multiplied by 1.8m is more than 3kg, and the net is flame retardant.
The skirting boards are uniformly arranged according to the height of 180mm, plywood with the thickness of 12mm is adopted, red and white alternate colors are brushed outside, the skirting boards are arranged along the length of the external hanging support 1, and the skirting boards are arranged on the operation layer.
The material of the wall connecting piece 6 adopts a steel pipe with the specification of 48.3 multiplied by 3.6, and the material of the wall connecting piece is in accordance with the requirement of Q235 grade steel in the carbon steel structure (GB700-2006) of the national standard. The setting is carried out according to two steps and three spans.
In the externally-hung type externally-hung cantilever scaffold, the externally-hung cantilever beam 2 adopts 16I-steel, and the vertical distance of the vertical rods is 800-1500 mm. The transverse distance of the vertical rods is 800 mm; the step pitch is 1800 mm; the distance between the inner vertical rod and the wall is 0.4 m; the distance between the sweeping rods and the ground is 200 mm; the scaffold boards are laid layer by layer, the vertical rods and the large cross rods must be fastened by right-angle fasteners, and the scaffold boards cannot be arranged and omitted at intervals. Except for the top step of the top layer, joints of all the other layers are connected by butt fasteners, and the joints are staggered by 0.5 section.
The step distance of the large cross rods is 1800mm, the lap joint positions of the upper cross rod and the lower cross rod are staggered and are not suitable to be smaller than 500mm, the grab rail is horizontally arranged at the high position of 0.6m of each step, and the cross rods at the position of the construction layer are properly adjusted according to actual conditions to ensure that the horizontal protection is 200mm higher than the working surface. The cross braces are required to be fully arranged and are continuously arranged along the height, the connecting angle parts of the inclined rods and the vertical rods are fastened by rotary fasteners, the included angle between the inclined rods and the horizontal rods ranges from 45 degrees to 60 degrees, the nodes of the cross braces are arranged on the same horizontal line and the same vertical line, the extension of the cross braces needs to be lapped, the length of a lap joint is not less than 1000mm, and not less than 3 fasteners are adopted. Except that being connected with pole setting and big horizontal pole at both ends, the centre still increases 2 ~ 3 nodes, and pole setting and big horizontal pole nodical department must establish little horizontal pole.
The fixed end of the cantilever beam 2 is fixed on the peripheral stress beam, and the anchoring is preferably arranged at three or more positions by adopting high-strength bolts.
Vertical horizontal pole setting is inboard at the pole setting in the scaffold frame, and vertical horizontal pole adopts butt joint fastener to connect, should accord with the standard requirement: the butt joint fasteners of the longitudinal horizontal rods are arranged in a staggered mode, the joints of two adjacent longitudinal horizontal rods are not suitable to be arranged in a synchronous or same span mode, the staggered distance of the two adjacent joints in the horizontal direction in the asynchronous or different span mode is not smaller than 500mm, and the distance from the center of each joint to the nearest main node is not larger than 1/3 of the longitudinal distance.
In the structure of the horizontal rod of the external scaffold bracket 1, a horizontal rod must be arranged at the main node, and the horizontal rod is fastened by a right-angle fastener and is strictly prohibited to be detached. The center distance between two right-angle fasteners at the main node is not more than 150mm, and in the double-row scaffold, the extending length of one end close to the wall is not more than 0.4L and is not more than 500 mm.
The horizontal bars on the working layer, which are not at the main nodes, are preferably arranged at equal intervals according to the requirement of supporting scaffold boards, and the maximum interval is not greater than 1/2 of the longitudinal distance. The scaffold must be provided with longitudinal and transverse ground sweeping rods. The vertical floor sweeping rod is fixed on the vertical rod which is not more than 200mm away from the base plate or the profile steel surface by adopting a right-angle fastener. The transverse sweeping pole is also fixed on the vertical pole below the longitudinal sweeping pole by a right-angle fastener.
In the structure of the vertical rod of the scaffold external hanging bracket 1, the vertical rod is reliably connected with a building by a wall connecting rod. The top of the top layer of the vertical rod can be lapped, and all the joints of the rest layers must be connected by butt fasteners. The mating should comply with the following regulations: the butt fasteners on the upright posts are arranged in a staggered manner, the joints of two adjacent upright posts are not arranged in synchronization, and the staggered distance of two separated joints of one upright post in the synchronization in the height direction is not smaller than 500 mm; the distance from the center of each joint to the main node is not more than 1/3 of the step moment; the vertical deviation of the vertical rod must not be too great 1/200. The upright of the upper scaffold and the supporting structure should have reliable positioning connection measures to ensure the stability of the upper scaffold body. It is common to weld C25 reinforcing bars having a length of not less than 150 to the cantilever beams or the longitudinal steel beams and to provide a floor sweeping bar under the vertical bars.
In the cross brace configuration, the outboard facade is continuously filled along the length and height. The width of each cross brace is not less than 4 spans and not less than 6m, and the inclination angle between the inclined rod and the ground is preferably 45-60 degrees.
The scaffold board of the operation layer of the external bracket 1 adopts a steel basketry net, and the scaffold board is paved fully and stably. The steel fence mesh is laid step by step to form a hard protection layer. The safety net is used as a protective layer and must be tightly and firmly hung, and the dense mesh net is used for vertical net protection.
In order to enhance the lateral rigidity and stability of the scaffold, a wall connecting rod is arranged between the externally hung bracket 1 and a building, and when the wall connecting piece 6 is arranged, the distance of the wall connecting piece 6 deviating from a main node is not more than 300 mm; when the device is arranged, the device is arranged from the position of a longitudinal horizontal rod in the first step of the bottom layer, and when the position is difficult to arrange, other reliable measures are adopted for fixing; the diamond arrangement or the square and rectangular arrangement can be adopted; when the wall connecting piece is arranged, the wall connecting piece 6 is arranged in a two-step three-span mode, and the wall connecting piece 6 is required to be arranged at a corner position. The wall connecting piece 6 adopts an embedded steel pipe, and the embedded steel pipe and the upright rod are firmly buckled when the externally hung support 1 is erected.
In order to consider the later convenient construction and reduce the construction difficulty, the wall connecting piece 6 is arranged from the second step longitudinal horizontal rod of the bottom layer on the premise of meeting the safety and the standard. If conditions permit, the wall connecting element 6 is preferably arranged starting from the longitudinal horizontal bar of the first step of the bottom layer. The broken end of the construction elevator (the opening of the external hanging bracket 1) is provided with a wall connecting piece 6 along each vertical layer and is horizontally arranged at the opening. The wall connecting piece 6 is arranged in the range of 1m along each side of the external corner at the position of the external corner, and the other positions are arranged according to the designed interval. The wall connecting piece 6 is preferably arranged in a diamond shape, and can also be arranged in a square or rectangular shape. The wall connecting rod in the wall piece is suitable to be horizontally arranged, and when the wall connecting rod cannot be horizontally arranged, one end connected with the scaffold is connected with the scaffold in a downward inclined mode.
When setting up the guard rail, the scaffold frame outside uses the qualified green close mesh formula safety net of construction director's department's authentication to seal, and fixes the safety net in the outer pole setting inboard of scaffold frame. The safety net is hung by a plastic binding belt, and the requirement is strict and flat. The outside of the scaffold is provided with a grab bar at the height of 0.6m per step and a skirting board at the height of not less than 18cm on the operating layer, the top row of guard rails is not less than 2, and the height is 0.6m and 1.2m respectively.
The contents of the present invention have been explained above. Those skilled in the art will be able to implement the invention based on these teachings. All other embodiments, which can be derived by a person skilled in the art from the above description without inventive step, shall fall within the scope of protection of the present invention.
Claims (10)
1. Outer hanging scaffold frame of encorbelmenting of hanging externally, its characterized in that includes:
the external hanging bracket is used for being arranged on the outer side of the building;
the cantilever beam is arranged at the lower part of the external hanging bracket and is used for supporting the external hanging bracket;
one end of the pull rod is connected with the cantilever beam, and the other end of the pull rod is fixedly connected to a building;
one end of the cantilever beam is provided with a supporting part which is fixedly connected with the outer wall of the building.
2. The externally hung suspended cantilever scaffold according to claim 1, wherein the pull rod comprises an upper section, a middle section and a lower section; the middle section is a basket sleeve, the basket sleeve comprises sleeve parts which are positioned at two ends and connected with the upper section end and the lower section end respectively, and the sleeve parts at the two ends are connected through connecting ribs which are circumferentially distributed on the outer circle of the sleeve.
3. The externally-hung and externally-hung overhanging scaffold as claimed in claim 1, wherein a lower bracket for supporting the overhanging beam is arranged at the lower side of the overhanging beam.
4. The externally-hung and externally-hung cantilever scaffold as claimed in claim 3, wherein one end of the lower bracket is connected with the free end of the cantilever beam, the other end of the lower bracket is used for being fixedly connected with the outer wall of the building, and the outer wall of the building, the cantilever beam and the lower bracket form a triangular fixed structure.
5. The externally-hung and externally-hung overhanging scaffold according to claim 1, wherein the supporting part comprises a supporting plate for being attached to the outer wall of the building, the supporting plate is provided with a hole, and the supporting plate is fixedly connected with the outer wall of the building through a bolt inserted into the hole.
6. The externally hung and suspended scaffold according to claim 5, wherein said supporting plate is a bent plate corresponding to the external corner of the building.
7. The externally hung and externally hung overhanging scaffold according to claim 5, wherein the supporting plate comprises barbs for embedding in the wall.
8. The externally-hung and externally-hung overhanging scaffold as claimed in claim 5, wherein the bolt is sleeved with a sleeve embedded in the wall.
9. The externally hung and suspended scaffold according to claim 8, wherein the outer wall of said sleeve is welded to the steel bars located in the wall.
10. The externally hung and suspended scaffold according to claim 1, wherein the externally hung support is provided with an externally hung support wall connecting member for fixedly connecting with the outwardly extending floor of the building, the wall connecting member is provided with a longitudinally extending fixing portion for extending into the outwardly extending floor of the building and fixedly connecting with the floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148434.5A CN110952764A (en) | 2019-11-21 | 2019-11-21 | Externally hung type externally hung overhanging scaffold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148434.5A CN110952764A (en) | 2019-11-21 | 2019-11-21 | Externally hung type externally hung overhanging scaffold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110952764A true CN110952764A (en) | 2020-04-03 |
Family
ID=69977917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911148434.5A Pending CN110952764A (en) | 2019-11-21 | 2019-11-21 | Externally hung type externally hung overhanging scaffold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110952764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962945A (en) * | 2021-02-04 | 2021-06-15 | 中建一局集团建设发展有限公司 | Corner bracket structure and construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204098463U (en) * | 2014-08-08 | 2015-01-14 | 徐韩伟 | Builder's jack |
| CN109779225A (en) * | 2019-03-13 | 2019-05-21 | 中国十七冶集团有限公司 | A kind of change overhanging type external scaffold and construction method |
| CN110952763A (en) * | 2019-11-21 | 2020-04-03 | 成都建工第二建筑工程有限公司 | Construction method of externally-hung type externally-hung overhanging scaffold |
| CN211666225U (en) * | 2019-11-21 | 2020-10-13 | 成都建工第二建筑工程有限公司 | Externally hung type externally hung overhanging scaffold |
-
2019
- 2019-11-21 CN CN201911148434.5A patent/CN110952764A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204098463U (en) * | 2014-08-08 | 2015-01-14 | 徐韩伟 | Builder's jack |
| CN109779225A (en) * | 2019-03-13 | 2019-05-21 | 中国十七冶集团有限公司 | A kind of change overhanging type external scaffold and construction method |
| CN110952763A (en) * | 2019-11-21 | 2020-04-03 | 成都建工第二建筑工程有限公司 | Construction method of externally-hung type externally-hung overhanging scaffold |
| CN211666225U (en) * | 2019-11-21 | 2020-10-13 | 成都建工第二建筑工程有限公司 | Externally hung type externally hung overhanging scaffold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962945A (en) * | 2021-02-04 | 2021-06-15 | 中建一局集团建设发展有限公司 | Corner bracket structure and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110952763A (en) | Construction method of externally-hung type externally-hung overhanging scaffold | |
| CN105019639B (en) | Overhead cantilever formwork and its construction method | |
| CN108643544B (en) | High-altitude overhanging construction platform support system and construction method | |
| CN108677962B (en) | Subway entrance and exit segment foundation pit formwork installing and dismantling method | |
| CN107327068B (en) | Steel structure truss string system roof ceiling structure and construction method thereof | |
| CN111779248A (en) | High formwork system and construction method thereof | |
| CN108625489A (en) | A kind of steel bar girder edges of boards portion and connection joints of steel structure structure | |
| CN108625485A (en) | A kind of steel bar girder plate end connecting joint structure and construction method | |
| CN211666225U (en) | Externally hung type externally hung overhanging scaffold | |
| CN110952764A (en) | Externally hung type externally hung overhanging scaffold | |
| CN105971110A (en) | Construction method for fire control corridor steel structure supporting system | |
| CN111576832A (en) | Construction system and construction method of cantilever multi-bent | |
| CN115306137B (en) | Operation platform structure for installing suspended ceiling at bottom of high-altitude corridor and construction method thereof | |
| CN111236603B (en) | Comprehensive construction method for steel plate mesh overhanging scaffold | |
| CN115627912A (en) | Construction method of assembled externally-mounted flower basket type overhanging scaffold | |
| CN110778094A (en) | High-altitude large-span dragline net operating platform and construction method | |
| CN116537534A (en) | Construction method of high and large formwork engineering supporting system | |
| CN114775979A (en) | Assembly operation frame device for safety production training | |
| CN114412152A (en) | Construction method for constructing I-steel scaffold by large-span overhanging structure of high-rise cluster project | |
| CN111677259B (en) | High-rise Bailey truss cantilever construction method | |
| CN111608376B (en) | Comprehensive construction method for shaping component | |
| CN111608377B (en) | Comprehensive construction method for building overhanging scaffold | |
| CN206128595U (en) | Scaffold that encorbelments frame shaped steel platform | |
| CN218562657U (en) | Steel construction assembled outer surrounding ALC wallboard installation node | |
| CN115182482B (en) | Construction method of prefabricated hollow wall body without outer frame matching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |