CN113235898A - Overhanging scaffold and construction process thereof - Google Patents
Overhanging scaffold and construction process thereof Download PDFInfo
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- CN113235898A CN113235898A CN202110623543.9A CN202110623543A CN113235898A CN 113235898 A CN113235898 A CN 113235898A CN 202110623543 A CN202110623543 A CN 202110623543A CN 113235898 A CN113235898 A CN 113235898A
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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
- E04G5/007—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 provides an overhanging scaffold and a construction process thereof, wherein the overhanging scaffold comprises overhanging section steel, a connecting piece and a scaffold main body, the connecting piece is provided with a leveling component which telescopically moves relative to the overhanging section steel, and the leveling component is abutted against the overhanging section steel; and the upper part of the connecting piece is provided with a limiting column and/or a supporting seat for limiting and fixing the supporting frame main body. The overhanging scaffold provided by the invention offsets the assembly deviation of overhanging section steel by adjusting the mounted position of the connecting piece, has low requirement on the assembly precision of the overhanging section steel, is convenient for the subsequent assembly of a scaffold main body, and greatly improves the construction speed and the construction safety.
Description
Technical Field
The invention relates to the field of building construction, in particular to an overhanging scaffold and a construction process thereof.
Background
The scaffold is various supports which are erected for workers to operate and solve vertical and horizontal transportation on a construction site, and is mainly used for up-and-down operation of constructors, enclosure of peripheral safety nets, high-altitude installation of components and the like. For the local construction area with higher height, the cost for integrally erecting the scaffold is higher, so that the overhanging scaffold can be transported as soon as possible.
The overhanging scaffold is a scaffold with a frame body structure unloaded on a rigid overhanging beam (frame) attached to a building structure, is used for the operation of main bodies or decoration engineering in building construction and the safety protection requirement thereof, and has the advantages of low engineering cost, less facility investment, higher safety factor and the like. When the high-rise building is constructed, a section steel cantilever scaffold needs to be erected, and usually an inclined steel wire rope is arranged at the outer end of a section steel cantilever beam to be tied with a building so as to transmit the load of the scaffold to the structure of the building.
However, in the installation of the existing overhanging type steel outer scaffold, due to the fact that certain deviation exists in the flatness of an installation wall or the ground or the construction is not standard, the I-shaped steel in the overhanging type steel outer scaffold is inclined, and the subsequent installation is difficult. Chinese patent application No. 201921655604.4 discloses an outer scaffold I-steel adjusting shim that encorbelments, include: the gasket comprises a gasket body, a first bolt, a second bolt, an I-shaped steel end plate, I-shaped steel, a concrete wall body, a folded edge, a first side leaf and a second side leaf; the front end of the gasket body is provided with a first side leaf and a second side leaf in parallel, and the rear end of the gasket body is provided with an L-shaped folded edge; the first side leaf and the second side leaf are provided with a U-shaped or Jiong-shaped bayonet at an interval, and the U-shaped or Jiong-shaped bayonet is arranged at the front part of the gasket body; through the structural improvement anticreep to the gasket and preventing breaking away from anti-drop, it is high to adjust the precision, easy construction operation. However, due to the fact that construction is not precise, height inconsistency between the I-beams still exists, the connecting piece fixed at the far end of the I-beam is obviously uneven, and subsequent installation is very difficult; even the I-shaped steel as the base is stressed unevenly, and great potential safety hazards exist.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention solves the problem that in the installation of the overhanging scaffold, I-shaped steel serving as a base is easy to incline towards different directions or the height difference exists between the I-shaped steel, so that the subsequent scaffold main body is difficult to install, and even the potential safety hazard exists due to uneven stress.
In order to solve the problems, the invention provides an overhanging scaffold, which comprises overhanging section steel, a connecting piece and a scaffold main body, wherein the connecting piece is provided with a leveling component which telescopically moves relative to the overhanging section steel, and the leveling component is abutted against the overhanging section steel; and the upper part of the connecting piece is provided with a limiting column and/or a supporting seat for limiting and fixing the supporting frame main body.
This setting can be adjusted the position after the installation of connecting piece, offsets the assembly deviation of the shaped steel of encorbelmenting, and is low to the assembly required precision of the shaped steel of encorbelmenting, and the subsequent equipment of scaffold frame main part of also being convenient for simultaneously improves construction speed and construction safety nature greatly.
Preferably, the connecting piece includes the body, one side setting of body is the socket of "C" type, the shaped steel activity of encorbelmenting sets up in the socket, the top and/or the below of socket set up the leveling subassembly of scalable removal. Even there is arbitrary direction slope or height error in the shaped steel of encorbelmenting after the assembly in the construction, can quick adjustment connecting piece's position through the leveling subassembly, the subsequent assembly of installing scaffold frame main part of being convenient for.
Preferably, the body comprises a first plate, a second plate and a third plate which are connected in an end-to-end manner, the first plate and the third plate are arranged along a first direction, the second plate is provided with the first plate along a second direction, the third plate is provided with a limiting block at one end far away from the second plate, and the limiting block extends towards the first plate. This set up simple structure, can cooperate the leveling subassembly to cantilever shaped steel and fix in advance, assembly efficiency is high. Preferably, through holes are formed in the first plate and the third plate on the sides far away from the second plate and used for assembling the cantilever steel sections.
Preferably, the leveling assembly includes a first lifting knob and a second lifting knob, and the first lifting knob and the second lifting knob are disposed on one of the first plate or the third plate at an interval and located at an end of the first plate or the third plate away from the second plate. The arrangement can ensure that the upper part of the connecting piece keeps a fixed direction by respectively adjusting the heights of the first lifting knob and the second lifting knob when the far end of the installed cantilever steel inclines upwards or downwards.
Preferably, the leveling assembly further comprises a third lifting knob disposed on the other of the first plate or the third plate and adjacent to the second plate. The specific structures of the first, second, and third lifting knobs are the prior art, and are not described herein. This setting can be when encorbelmenting shaped steel to its length direction slope of perpendicular to or when the altitude deviation appears, adjusting connection spare to fixed direction, the assembly of the follow-up scaffold frame main part of being convenient for.
Preferably, the cantilever scaffold further comprises a steel wire rope which is obliquely arranged, one end of the steel wire rope is connected with the first anchorage device, and the first anchorage device is fixed in the reinforced concrete structure; and the other end of the steel wire rope is connected with the overhanging section steel or the connecting piece.
This set up dispersion scaffold frame of encorbelmenting to reinforced concrete structure's effort, stability is better more, and factor of safety is high. Preferably, the steel wire rope is formed by connecting two steel wires by a turn buckle, and the lead screw is used for stretching, so that the tightness of the steel wire rope is adjusted.
Preferably, the first anchor comprises a base plate, a fastening bolt, a sleeve and a threaded sleeve, one side of the base plate is fixed in the reinforced concrete structure through the fastening bolt, the sleeve is hinged to the other side of the base plate, the threaded sleeve is in threaded connection with the sleeve, and one end of the steel wire rope is connected with the sleeve.
This setting can be solved among the prior art wire rope and fix on the wall body through oblique pull rod end plate, because oblique pull rod end plate predetermines the angle unadjustable and cause the base plate to closely with concrete wall body laminating easily, makes the both ends atress of base plate unbalanced, has the potential safety hazard.
Preferably, the connecting member includes a hinge portion provided above the third plate, and the wire rope is connected to the hinge portion. This setting can avoid wire rope snap-on to encorbelment on the otic placode of shaped steel, because the otic placode adopts the fillet weld to be connected with the shaped steel of encorbelmenting, not enough such as easy fracture of welding seam hand power, safe and reliable more.
Preferably, the hinge part comprises a first fixing lug and a second fixing lug which are arranged in parallel, the first fixing lug and the second fixing lug are respectively positioned at two sides of the limiting column, a connecting rod is arranged between the first fixing lug and the second fixing lug, and the connecting rod is positioned at one side of the limiting column. This set up simple structure, avoid exempting from to form to interfere the installation of pole setting, be convenient for implement.
Compared with the prior art, the overhanging scaffold has the following beneficial effects: (1) the cantilever scaffold has low requirement on the assembly precision of cantilever section steel, and has good installation efficiency and construction stability; (2) by arranging the first anchorage device, the base plate is prevented from being not tightly attached to the concrete wall, so that the two ends of the base plate are stressed uniformly, and the safety is high; (2) the scaffold main body is connected with the connecting piece instead of being connected with the lug plate of the cantilever type steel, so that the fracture of a welding line on the lug plate is avoided, and the construction safety is further improved.
The invention also provides a construction process of the overhanging scaffold, which comprises the following steps: s1, fixing the cantilever steel section on the wall through a second anchorage device; s2, limiting the connecting piece on one side, far away from the wall, of the overhanging section steel through a socket, adjusting the position through a leveling component, and then pre-fixing, wherein a bolt penetrates through the through hole to fix the connecting piece on the overhanging section steel; s3, fixing one end of the steel wire rope on the wall body in an inclined mode through a first anchorage device, and connecting the other end of the steel wire rope with the hinge portion of the connecting piece; s4, completing the fixed assembly of the scaffold main body, the connecting piece and the overhanging section steel; and S5, dismantling the overhanging scaffold and filling the reserved sleeve hole. The construction process has the same beneficial effects as the overhanging scaffold, and is not repeated herein.
Drawings
Fig. 1 is a schematic structural diagram of a cantilever scaffold according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a first perspective view of a connector according to an embodiment of the present invention;
fig. 4 is a second perspective view of a connector according to an embodiment of the present invention.
Description of reference numerals:
1-cantilever steel section; 11-reinforcing steel bar heads; 2-a connector; 21-body; 221-a first plate; 222-a second plate; 223-a third plate; 224-a stop block; 22-a socket; 23-a limiting column; 231-a guide ramp; 24-a support seat; 25-a leveling assembly; 251-a first lifting knob; 252-a second lifting knob; 253-a third lifting knob; 26-a through hole; 27-a hinge; 271-a first fixing lug; 272-a second fixing ear; 273-connecting rod; 3-a scaffold body; 31-erecting a rod; 32-a cross-bar; 4-a first anchor; 41-a substrate; 42-fastening bolts; 43-a sleeve; 44-elastic cone blocks; 45-thread sleeve; 5-a second anchorage device; 6-steel wire rope; 7-turn buckle.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
In the construction of high-rise buildings, the application of overhanging scaffolds which are related to construction safety is wider and wider, and the assembly efficiency influences the construction cost; the applicant finds the following defects in the prior art in production: the construction positioning is not accurate, the embedded parts are easy to deviate and deform, and the cantilever steel sections 1 fixedly assembled through the embedded parts are also inclined or mutually inconsistent in height; because the connecting piece 2 is fixed at the tip of the shaped steel 1 of encorbelmenting usually and unable adjustment, lead to the deviation also to appear in connecting piece 2, the installation can be very difficult, inefficiency with the scaffold frame main part 3 that connecting piece 2 links to each other, has the potential safety hazard even. The applicant proposes the following technical scheme on how to ensure the consistency between the connecting pieces 2 at the end parts of the cantilever steel sections 1, improve the overall assembly efficiency, and simultaneously ensure that all the cantilever steel sections 1 are uniformly stressed for safe construction.
As shown in fig. 1, the overhanging scaffold comprises overhanging section steel 1, a connecting piece 2 and a scaffold main body 3, wherein a sleeve joint 22 is arranged on the connecting piece 2, and the connecting piece 2 is sleeved at one end, far away from a wall, of the overhanging section steel 1 through the sleeve joint 22; and a leveling component 25 which can move in a telescopic manner is arranged above and/or below the socket 22 and is used for adjusting the relative position of the connecting piece 2 and the cantilever steel 1. Even though there is any direction slope or height error in the cantilever shaped steel 1 after the assembly in the construction, can adjust the position of connecting piece 2 fast through leveling subassembly 25, the subsequent assembly of installing scaffold frame main part 3 of being convenient for.
The scaffold main body 3 comprises a vertical rod 31 and a horizontal rod 32, the vertical rod 31 and the horizontal rod 32 are vertically arranged, the horizontal rod 32 is fixedly arranged on the vertical rod 31, and the vertical rod 31 is made of hollow steel pipes; preferably, the one end welding that shaped steel 1 encorbelments and is being close to the wall body sets up the reinforcing bar head 11, pole setting 31 corresponds the cover and is located on the reinforcing bar head 11, promptly: during construction, the steel bar heads 11 are welded on the cantilever steel bars 1 in advance to position the corresponding vertical rods 31, and then the vertical rods 31 are inserted into the steel bar heads 11 in a jacking and inverting mode, so that one side of the scaffold main body 3 is connected with the cantilever steel bars 1. Preferably, two upright rods 31 form a group, the upright rods 31 are arranged at intervals along the length direction of the cantilever steel 1, and the distance between the two upright rods 31 is 0.65-1.5 m. Preferably, a safe vertical net is arranged on the outer side of the cross rod 32, the flame retardant coefficient of the safe vertical net is not more than 4s, the mesh density is not lower than 2000 meshes/100 cm2, and the safe vertical net meets the relevant requirements of penetration resistance test impact test.
The cantilever section steel 1 and the structural floor slab are hard-tied through the second anchorage device 5, as an indication of the invention, the second anchorage device 5 comprises a sleeve, a counter-pulling screw rod and a nut, the sleeve is pre-buried in the bottom structural floor slab, and the counter-pulling screw rod sequentially penetrates through the sleeve and the cantilever section steel 1 to be connected with the nut in a threaded manner. As another example of the present invention, it is preferable that the second anchorage device 5 further includes a spacer; preferably, the number of the gaskets is two, and the gaskets are respectively arranged at two ends of the sleeve. Before concrete pouring, the aluminum formwork is punched and the gasket is embedded, holes do not need to be formed in the aluminum formwork in the later period, accordingly construction speed is improved, leakage risks are reduced, and the phenomenon that the outer wallboard connecting part is exploded when concrete pouring is conducted can be effectively prevented.
As shown in fig. 1 and 2, the overhanging scaffold further comprises a steel wire rope 6 which is obliquely arranged, one end of the steel wire rope 6 is connected with the first anchorage device 4, the first anchorage device 4 is fixed in the reinforced concrete structure, and the other end of the steel wire rope 6 is fixedly connected with the overhanging section steel 1 or the connecting piece 2. This set up dispersion scaffold frame of encorbelmenting to reinforced concrete structure's effort, stability is better more, and factor of safety is high. Preferably, the steel wire rope 6 is formed by connecting two steel wires by using a turn buckle 7, and is stretched by using a lead screw, so that the tightness of the steel wire rope 6 is adjusted. Preferably, the included angle between the steel wire rope 6 and the vertical wall body is 19-45 degrees.
Usually, the steel wire rope 6 is fixed on the wall through the diagonal draw bar end plate, and the preset angle of the diagonal draw bar end plate is not adjustable, so that the base plate 41 is not tightly fitted with the concrete wall, the stress on two ends of the base plate 41 is unbalanced, and certain potential safety hazards exist; preferably, the first anchorage device 4 comprises a base plate 41, a fastening bolt 42, a sleeve 43 and a threaded sleeve 45, wherein one side of the base plate 41 is fixed on the building wall through the fastening bolt 42, the sleeve 43 is hinged to the other side of the base plate 41, the threaded sleeve 45 is in threaded connection with the sleeve 43, and one end of the steel wire rope 6 is fixedly connected with the sleeve 43; preferably, the first anchorage device 4 further comprises an elastic conical block 44 inserted in the sleeve 43, and the steel wire rope 6 sequentially penetrates through the threaded sleeve 45 and the sleeve 43 and then is fixed on the elastic conical block 44. As an example of the present invention, one end of the small end surface of the elastic conical block 44 is inserted into the sleeve 43, the elastic conical block 44 is provided with a plurality of coaxially distributed circular holes, the inner wall of the circular hole is provided with a plurality of teeth, the large end surface of the elastic conical block 44 is provided with a plurality of dividing grooves which are equidistantly distributed along the axial direction of the elastic conical block, and the dividing grooves are located on the periphery of the steel wire rope 6 and extend along the taper direction of the elastic conical block 44.
As shown in fig. 3 and 4, a connecting member 2 is used for connecting overhanging section steel 1 and a scaffold main body 3, and comprises a body 21, wherein a C-shaped sleeve opening 22 is formed on one side of the body 21, the height of the sleeve opening 22 is greater than that of the overhanging section steel 1, and a leveling component 25 which can move in a telescopic manner is arranged above and/or below the sleeve opening 22; the top of body 21 sets up spacing post 23 and/or supporting seat 24, and is adjustable through the leveling subassembly connecting piece 2 with the relative position of shaped steel 1 encorbelments, is convenient for spacing post 23 and/or supporting seat 24 are fixed with being connected of scaffold frame main part 3, improve assembly efficiency.
As an example of the present invention, at least one side of the socket 22 is provided with a through hole 26 for being sleeved and fixed on the cantilever steel 1; preferably, the upper side and the lower side of the socket 22 are provided with through holes 26, and during assembly, the tensioning bolt sequentially penetrates through the two through holes 26, and the connecting piece 2 is fixed on the cantilever steel 1 through a nut.
As an example of the present invention, the body 21 includes a first plate 221, a second plate 222, and a third plate 223 connected end to end, wherein the first plate 221 and the third plate 223 are disposed along a first direction, the second plate 222 is disposed along a second direction, and preferably, the first direction and the second direction are perpendicular to each other. As an example of the present invention, the limiting column 23 is vertically disposed above the third plate 223 for limiting and fixing the vertical rod 31; preferably, the upper end of the limit column 23 is provided with a guide inclined plane 231, so that the vertical rod 31 can be conveniently and rapidly inserted or sleeved and fixed. As an example of the present invention, the supporting seat 24 is an arc-shaped plate, and is disposed on the upper side of the socket 22, and is used for supporting the cross bar 32 connected to the vertical rod 31; this setting does not influence the socket 22 peg graft on overhanging section steel 1, makes the supporting seat 24 half wrap in the lower part of horizontal pole 32 simultaneously, and area of contact is big, supports stably. Preferably, the support seat 24 is located at an edge of the third plate 223. Preferably, the third plate 223 is further provided with a limiting block 224 at an end far away from the second plate 222, for limiting the assembled cantilever steel 1 to the left and right, so as to avoid displacement.
As an example of the present invention, the leveling assembly 25 includes a first lifting knob 251 and a second lifting knob 252 disposed adjacent to the through hole 26, the first lifting knob 251 and the second lifting knob 252 being disposed on one of the first plate 221 or the third plate 223; preferably, the first lifting knob 251 and the second lifting knob 252 are provided at intervals along the length direction of the cantilever steel 1. This arrangement allows the upper side of the connecting member 2 to maintain a fixed direction by adjusting the heights of the first and second elevation knobs 251 and 252 when the distal end of the installed cantilever steel 1 is inclined upward or downward. Preferably, the leveling assembly 25 further comprises a third lifting knob 253, the third lifting knob 253 is disposed on the other of the first plate 221 or the third plate 223, and the third lifting knob 253 is disposed adjacent to the second plate 222. This setting can be when encorbelmenting shaped steel 1 to its length direction slope of perpendicular to or when the altitude deviation appears, adjustment connecting piece 2 to fixed direction, the assembly of the follow-up scaffold frame main part 3 of being convenient for. Preferably, the first elevation knob 251, the second elevation knob 252, and the third elevation knob 253 have the same structure, can be moved up and down by rotation, and are in contact with the cantilever steel 1.
If the lower end of the steel wire rope 6 is directly fixed on the ear plate of the overhanging section steel 1, the ear plate is connected with the overhanging section steel 1 by adopting an angle welding line, and the welding line is easy to break by hand pulling, so that potential safety hazards exist; the applicant further improves the scheme on the basis of the scheme. The connecting piece 2 comprises a body 21, a hinge portion 27 is arranged above the body 21, the hinge portion 27 comprises a first fixing lug 271 and a second fixing lug 272 which are arranged in parallel, the first fixing lug 271 and the second fixing lug 272 are respectively positioned at two sides of the limiting column 23, a connecting rod 273 is arranged between the first fixing lug 271 and the second fixing lug 272, the connecting rod 273 is positioned at one side of the limiting column 23 to avoid interference in installation of the vertical rod 31, and one end of the steel wire rope 6 is sleeved on the connecting rod 273.
The invention also provides a construction process of the overhanging scaffold, which comprises the following steps: s1, fixing the cantilever steel section 1 on the wall through a second anchorage device 5;
after the top plate template is erected and before the beam external mold is closed, a positioning line is accurately released on the template surface according to a design drawing; sleeves of 25 multiplied by 200mm are embedded in the beams corresponding to the overhanging section steel 1 and the upper floor where the overhanging section steel 1 is overhanging, and two ends of each sleeve are sealed by adhesive tapes so as to prevent the inner part of each sleeve from being blocked. After the strength of the concrete meets the requirement, removing the side die of the beam, dredging the inner sleeve of the embedded beam, penetrating first high-strength bolt gaskets of 20 multiplied by 30mm from the inside to the outside of a sleeve hole, sleeving the end parts of the processed cantilever section steel 1 into the two placed first high-strength bolts, respectively adding the gaskets on the bolts to be matched with two high-strength screw caps, and screwing the screw caps by using a spanner to finish the fixation of the cantilever section steel 1;
s2, the connecting piece 2 is limited on one side, far away from the wall, of the overhanging section steel 1 through the sleeve joint 22, the position is adjusted through the leveling component 25 and then the pre-fixing is carried out, and the bolt penetrates through the through hole 26 to fix the connecting piece 2 on the overhanging section steel 1;
the connecting piece 2 can be adjusted through the leveling component 25 to counteract partial inclination in the assembling process of the cantilever steel section 1; the assembly precision requirement of the overhanging section steel 1 is low, and meanwhile, the subsequent scaffold main body 3 is convenient to assemble, so that the construction speed is greatly improved.
S3, one end of the steel wire rope 6 is obliquely fixed on the wall through the first anchorage device 4, and the other end of the steel wire rope is connected with the hinge part 27 of the connecting piece 2;
one end of the steel wire rope 6 is hinged and fixed with the first anchorage device 4, so that the base plate 41 is prevented from being not tightly attached to a concrete wall, the two ends of the base plate 41 are stressed uniformly, and the steel wire rope is safer and more reliable; meanwhile, the steel wire rope 6 is stretched and contracted through the turn buckle 7 to adjust the tightness of the steel wire rope 6. After the steel wire rope 6 is confirmed to be screwed down, grease is wrapped and protected on the outer side of the turn buckle 7, and whether the turn buckle 7 is rusted or loosened is regularly checked.
And S4, finishing the fixed assembly of the scaffold main body 3, the connecting piece 2 and the cantilever steel section 1.
During installation, the upright rod 31 close to the wall and adjacent to the overhanging section steel 1 is installed on the reinforcement head 11, and the upright rod 31 far away from the wall and adjacent to the overhanging section steel 1 is installed on the limit column 23; the longitudinal distance between the vertical rods 31 is 1.5m, the vertical rods 31 at the bottom are arranged in a staggered mode by adopting steel pipes with different lengths, butt joints between the vertical rods 31 connected up and down are arranged in a staggered mode, the vertical directions are staggered by more than 500mm, and adjacent joints are not required to be in synchronous span to ensure the integrity of the scaffold main body 3.
The vertical rod 31 is lengthened consistently by using lap joint, and the lap joint should meet the following regulations: the overlapping fasteners on the vertical rods 31 are arranged in a staggered mode, overlapping joints of two adjacent vertical rods 31 are prevented from being arranged in synchronization, the staggered distance of the two adjacent joints for separating one vertical column in the synchronization in the height direction is not smaller than 500mm, and the distance from the center of each joint to the main node is not larger than 1/3 of the step distance. The lap length is not less than 1m, the lap joint is fixed by not less than two rotary fasteners, and the distance between the end part and the edge of the fastener cover plate to the rod end is not less than 100 mm; the top of the upright rod 31 is higher than the upper edge of the parapet by 1m and higher than the upper edge of the cornice by 1.5 m.
Cross bars 32 are staggered on the upright rods 31; preferably, the horizontal pole 32 includes first horizontal pole, second horizontal pole, pole setting 31 the inside is arranged in to first horizontal pole, and every side outer elongation is 150mm, and the master node sets up horizontal horizon bar simultaneously, connects and strictly forbids the dismantlement with right angle fastener, the second horizontal pole setting first horizontal pole with pole setting 31 nodical department to form the whole atress of spatial structure.
Preferably, the outer vertical surface of the scaffold main body 3 is enclosed by a 2000-mesh/100-square-centimeter dense mesh net, the bottom of the scaffold main body 3 is tightly sealed, wooden scaffold boards are laid fully, the wooden scaffold boards are tightly spliced and tightly bound with the scaffold main body 3; when the fully paved steel basketry sheet scaffold boards are adopted, the bottoms of the scaffold boards are sealed by adopting a 2000-mesh/100-square-centimeter dense mesh net, a 30mm flat net is arranged at intervals of 4 steps along the height of the inner side hollow block of the scaffold main body 3, and the bottoms of the scaffold boards are sealed by adopting a film coating board.
And S5, dismantling the overhanging scaffold and filling the reserved sleeve hole.
Preferably, structural adhesive mortar is adopted for filling; mixing 107 structural adhesive in 1:1 cement mortar, and then filling the cement mortar into a sleeve until the sleeve is compact, wherein the plumpness reaches more than 95%. Because the overhanging section steel 1, the connecting piece 2 and the steel wire rope 6 all adopt the connecting structure of the high-strength bolt, the high-strength bolt can be directly dismounted after the scaffold main body 3 is dismounted, and related parts can be repeatedly utilized, so that resources are saved, the smoothness of the wall surface is ensured, the possibility of water seepage of the outer wall is reduced, and the construction period is favorably shortened.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
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| CN202110623543.9A CN113235898A (en) | 2021-06-04 | 2021-06-04 | Overhanging scaffold and construction process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585699A (en) * | 2021-09-07 | 2021-11-02 | 四川万润铝模有限公司 | Adjustable cantilever frame device and using method thereof |
| CN114622709A (en) * | 2022-03-30 | 2022-06-14 | 中建四局第一建设有限公司 | Turnover cantilever structure for structural height difference part and construction method thereof |
| CN117513738A (en) * | 2023-10-30 | 2024-02-06 | 中国一冶集团有限公司 | A high-altitude cantilevered structural steel formwork support system and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585699A (en) * | 2021-09-07 | 2021-11-02 | 四川万润铝模有限公司 | Adjustable cantilever frame device and using method thereof |
| CN113585699B (en) * | 2021-09-07 | 2025-05-27 | 四川万润铝模有限公司 | Adjustable cantilever frame device and method of using the same |
| CN114622709A (en) * | 2022-03-30 | 2022-06-14 | 中建四局第一建设有限公司 | Turnover cantilever structure for structural height difference part and construction method thereof |
| CN117513738A (en) * | 2023-10-30 | 2024-02-06 | 中国一冶集团有限公司 | A high-altitude cantilevered structural steel formwork support system and construction method |
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