CN114319809A - Construction method of ultrahigh operation platform disc buckle type operation scaffold system - Google Patents
Construction method of ultrahigh operation platform disc buckle type operation scaffold system Download PDFInfo
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Abstract
The invention discloses a construction method of a disc buckle type operation scaffold system of an ultrahigh operation platform, and relates to the technical field of building construction. The method specifically comprises the following steps: the partition design of the operation scaffold; constructing a foundation cushion layer; measuring and paying off; a foundation and a channel steel backing plate; installing an operation scaffold system; mounting a jacking; mounting a jacking cross beam; mounting a steel scaffold board; mounting a steel ladder; and (5) dismantling the operation scaffold system. The invention has the advantages that: design super thick prefabricated concrete basis bed course, take the reinforcement measure, damaged when avoiding the construction operation, detain formula operation scaffold frame to the dish and carry out design optimization, according to support body service function region, take the dish to detain formula operation scaffold frame subregion combination and set up, rationally lay the member interval, the convenient equipment overlap joint reduces material and human cost's waste, improves the efficiency of construction, facilitates the use, and overall stability is good, safe and reliable.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a disc buckle type operation scaffold system of an ultrahigh operation platform.
Background
At present, steel construction factory building roofing adopts various steel tile roofing more, and to super high steel construction factory building, during various steel tile roofing construction, the scaffold puts up highly great, and traditional scaffold frame has very big potential safety hazard, is difficult to guarantee safe construction. The overall design interval of the disc buckle type operation scaffold is too close, so that the waste of materials and labor cost can be caused, and the problems of large consumption, less turnover times and large influence of outdoor natural environment corrosion deformation of a common steel pipe exist. The patent with publication number CN209942187U provides a dish knot formula scaffold work platform, and this work platform separable building is convenient for install, and the dish is detained fixedly safe, need not all disassemble and just can recycle. However, the overall structure still has the defects of poor structural strength and poor stability, and the partition structure design is not carried out at each position, so that the application is inconvenient.
Disclosure of Invention
The invention aims to solve the technical problems that a construction method of a disc buckling type operation scaffold system of an ultrahigh operation platform is provided, the design of the disc buckling type operation scaffold is optimized, and the problems that the scaffold for an ultrahigh steel structure factory building is large in waste of building materials, poor in structural strength and stability, difficult to ensure safe construction, not subjected to partition design in each part and inconvenient to apply in the prior art can be solved.
In order to solve the technical problems, the technical scheme of the invention is as follows: the method comprises the following steps:
s1, arranging the operation scaffold body in a partition mode: according to the load condition, a partition combined design platform of the disc buckle type operation scaffold is adopted: the operation traffic area is used as a non-core stress area, the mechanical operation area of the equipment and the material stacking area are used as basic frame parameters of the core stress area to be set, different vertical rod intervals are arranged in different areas, and inclined rods, horizontal cross braces, horizontal safety flat nets and tuck nets are arranged;
s2, measurement and setting: popping up a longitudinal positioning line and a transverse positioning line at the center of a frame upright stanchion on a base layer according to an arrangement drawing of the operation scaffold frame body, and marking;
s3, paving a channel steel base plate: paving a damping rubber pad on the positioning line, then placing channel steel, damping and resisting during mechanical operation, keeping the channel steel horizontal, and leveling the lower part of the vertical rod by using a base;
s4, installing a working scaffold system: installing the vertical rods, installing the cross rods and the vertical rods in a matched mode, and then installing the inclined rods to achieve installation of the frame body;
s5, jacking and installing: after the frame body is installed, a screw rod at the bottom of the U-shaped adjusting seat is inserted into the top of the vertical rod, the height of the cross rod at the uppermost row of the vertical rod from an adjustable supporting plate of the U-shaped adjusting seat is not more than 650mm, the exposed length of the screw rod is not more than 400mm, and the length of the screw rod inserted into the vertical rod is not less than 150 mm;
s6, mounting a jacking operation beam: the core stress area adopts a channel steel beam, the non-core stress area adopts a double-layer steel pipe as a beam, and the steel pipe is arranged on the jacking;
s7, mounting the steel scaffold board: a 15mm steel plate is spot-welded on a channel steel beam in a core stress area, a steel fence sheet is laid on a double-layer steel pipe in a non-core stress area, and a foot baffle plate and a protective railing are arranged on the outer side of a scaffold plate;
s8, installing a steel ladder: a disc buckle type steel ladder stand is arranged on the side surface of the operation scaffold, and a safety net is fully hung on the inner side of the steel ladder stand;
s9, dismantling the operation scaffold system: after the construction of the roof color steel tile is finished, the scaffold plate, the operation cross beam, the U-shaped adjusting seat, the inclined rod, the cross rod and the vertical rod are sequentially disassembled, the floor-by-floor disassembly, classification, packaging and transportation and loading are carried out, and the aspect ratio of the minimum remaining area during the disassembly is not more than 3: 1.
Further, in the step S2, the base layer is formed by assembling prefabricated concrete plates of 200-300mm thick and C25 in blocks, the prefabricated concrete plates are protected by angle iron angle protectors of 25mm × 25mm and directly laid on the rammed base layer soil, drainage ditches are arranged at the periphery, and the prefabricated concrete plates are arranged in staggered joints and are tightly encapsulated by cement mortar.
Further, in step S4, the operation scaffold system is specifically installed as follows:
installing a vertical rod: two adjacent upright posts are different in length specification, or the adjacent upright post connecting sleeves are reversed and staggered, so that the spigot-and-socket joints of the upright posts are not on the same horizontal plane, the lower first-layer upright post is installed firstly, after the first-layer frame body is corrected and molded, the upright posts are lengthened and installed, the upright posts are in spigot-and-socket connection through the upright post connecting sleeves, and the gap between the inner diameter of the sleeve and the outer diameter of the upright post steel pipe is less than or equal to 2 mm;
installing a cross bar: during installation, the cross rod bolt is not tightly knocked, the cross rod is installed layer by layer along with the lengthening of the vertical rod, the end part of the cross rod is sleeved into the position of the small hole of the disc, so that the front end of the cross rod is abutted against the circular tube of the vertical rod, and then the cross rod is tightly knocked and fixed by penetrating the small hole through the inclined wedge, so that the disc buckling type installation is realized; the height of the center line of the horizontal rod at the bottommost layer of the floor sweeping rod from the bottom plate of the adjustable base is not more than 550 mm;
installing an inclined rod: after the horizontal adjustment of the frame body is finished, installing an inclined rod, forming a triangular stress system with the vertical rod and the cross rod when the inclined rod is installed, assembling and erecting vertical inclined rods in a clockwise direction or a counterclockwise direction, sleeving the vertical inclined rods into the positions of the large holes of the disc, enabling the front ends of the vertical inclined rod heads to abut against the circular tubes of the vertical rods, penetrating the large holes by using an inclined wedge for fastening and fixing, and after the inclined rod is installed, hammering the cross rod and inclined rod bolts one by using a hammer, wherein the bolt tightening degree is based on bolt scale marks;
peripheral pulling and knotting: buckling a wall-connecting double-horizontal rod and two vertical rod fasteners at the positions of the steel columns, wherein the horizontal distance between the wall-connecting double-horizontal rods is not more than 3 spans, and a disc-buckling lattice column is additionally arranged when the distance requirement is not met, and the operation scaffold is reliably pulled to be connected with the surrounding built structure at intervals of 4-6 steps in the vertical direction; the plate buckle frame body on the non-adjacent side of the building adopts a rigid connection and flexible connection combined drawknot measure, and is provided with a steel wire rope or a steel pipe which is crossed and obliquely pulled with the plate buckle upright rod, and the steel wire rope or the steel pipe is obliquely pulled at the elevation positions of 10m and 20 m.
Further, in step S4, after each step of lapping the rod bodies, the step distance of the cross rod, the vertical and horizontal distances of the vertical rod, the vertical deviation of the vertical rod and the horizontal deviation of the cross rod are corrected, and the vertical deviation of the vertical rod is controlled not to be greater than H/500 and not to be greater than 50 mm.
Further, in step S1, on the premise of meeting the load, the design of the unit frame is optimized, two ends of the work traffic area of the ultra-high platform frame are symmetrically arranged, and the mechanical operation area of the equipment and the material stacking area are arranged in the middle of the operation platform;
the working traffic area adopts the space between the upright posts to be 0.9m multiplied by 0.9m, the mechanical operation area of the equipment adopts the space between the upright posts to be 0.6m multiplied by 0.6m, the material stacking area adopts the space between the upright posts to be 0.6m multiplied by 0.3m, the step pitch is 1.5m, and the step pitch of the two layers at the top is 1 m.
Further, in the step S1, in order to enhance the overall rigidity of the full hall operation scaffold, fastener-type horizontal scissor supports are arranged between steel pipes of the scaffold body, the width of each horizontal scissor support is 5-8m, the horizontal scissor supports are vertically spaced by 4-6 standard steps, and the angle of each horizontal scissor support is controlled to be 45-60 degrees;
the frame body protection measures are that a horizontal safety flat net is arranged every 5-7m on the operation platform, a horizontal outward-projecting net is arranged at the elevation of the frame body close to the top, personnel or materials are prevented from falling, and the stability of the frame body is reinforced.
Further, in step S1, vertical diagonal rods are arranged in partition areas of the disc buckling type operation scaffold body, a cylindrical well-adding grid type vertical diagonal rod arrangement scheme is adopted, the vertical diagonal rods are fully laid in the core stress area, the diagonal rods in the non-core stress area are arranged at three spans, and the vertical diagonal rods are arranged at each span in the top-layer step pitch of the operation scaffold body.
Further, in step S1, when the disk fastener frame is erected in a partition combination manner, the operation team simultaneously erects the frame bodies in each area, and then the rod members between the frame bodies in each area are connected to meet the requirement that the height-to-width ratio of the frame bodies is not more than 3: 1.
Further, in step S6, when the steel tube beam is supported, the steel tube specification is unified to be Φ 48, and the double-layer steel tubes are arranged in a criss-cross manner, so as to improve the overall stability.
Further, in step S7, a 0.2m high foot baffle plate and a 1.5m high disc buckle enclosure are arranged around the hook-type steel scaffold plate.
The invention has the advantages that: designing an ultra-thick prefabricated concrete foundation cushion layer, taking reinforcement measures to avoid damage during construction operation, designing and optimizing a disc buckling type operation scaffold, wherein a socket type disc buckling type scaffold is adopted for an operation scaffold system, and the disc buckling type operation scaffold is divided and combined to be erected according to the use function area of a scaffold body, so that the distances among rods are reasonably arranged, the assembly and the lap joint are convenient, the waste of materials and labor cost is reduced, the construction efficiency is improved, and the use is convenient;
the forms of the cross braces, the horizontal safety nets and the wall connecting parts are optimized, the steel columns adopt double steel pipe wall connecting parts, rigid connection and flexible connection are combined with reinforcing of the plate buckle frame bodies on the non-adjacent sides of the building, and the anti-overturning effect is good; the inclined rod of the frame body of the disc buckle is designed in a partition mode, so that the structural strength and the protection of the frame body and the overall stability of the frame body are enhanced; the vertical rod jacking cross beam is arranged in a partitioned mode, a channel steel cross beam is arranged in a core stress area, a double-layer steel pipe cross beam is arranged in a non-core stress area, the cross beam specification is unified, double-layer steel pipes are arranged in a criss-cross mode, and the overall stability is good; a steel plate is spot-welded on the channel steel of the core stress area, so that the bearing capacity is improved, and the device is safe and reliable; guardrail bar is prevented shaking by the buckle formula of mounting disc, arranges in a flexible way, and is safe convenient, can have enough to meet the need the use, reduces the input of consumptive material and turnover material, reduce cost, reduction of construction period.
Drawings
FIG. 1 is a schematic view of the construction process of the present invention;
FIG. 2 is a schematic plan view of a horizontal cross brace of the present invention;
FIG. 3 is a top view of the vertical diagonal of the present invention;
FIG. 4 is a schematic illustration of a working scaffolding construction zone of the present invention;
FIG. 5 is a partial three-dimensional schematic view of a scaffold reinforcement system of the present invention;
FIG. 6 is a top view of the scaffold reinforcement system of the present invention;
fig. 7 is a top view of the top-supporting beam of the working scaffold of the present invention;
fig. 8 is a schematic view of the top scaffold frame operation system of the operation scaffold system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description. The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
The construction method of the plate-buckle type operation scaffold system for the ultrahigh operation platform is applied to a vehicle-mounted 3D cover plate glass production line project for construction, the total building area is 71336.75 square meters, the main bodies of a factory building I and a factory building II are steel structures, the heights of the factory building I and the factory building II are 31.2m, the outer walls are vertical single-layer profiled steel plate outer walls, and the roof is a color steel tile roof.
In order to facilitate the whole-plate installation of the color steel tiles on the roof, an operating platform of a full-hall disc buckling steel pipe scaffold is erected on the east side of a factory building to the roof, the full-hall scaffold is erected to be about 18m in length, about 15m in width and about 29.7m in height, and a standard (B-type) 48-series disc buckling operating scaffold is adopted as an operating platform system.
As shown in fig. 1, a specific embodiment comprises the steps of:
s1, arranging the operation scaffold body in a partition mode: according to the load condition, a partition combined design platform of the disc buckle type operation scaffold is adopted: the operation traffic area 1 is used as a non-core stress area, an equipment mechanical operation area and a material stacking area and is used as basic frame parameters of the core stress area, the equipment mechanical operation area is a plate folding machine operation area 2, the material stacking area is a color steel plate stacking area 3, different areas are provided with different vertical rod intervals, and inclined rods, horizontal cross braces, horizontal safety flat nets and tuck nets are arranged;
on the premise of meeting the load, optimizing the design of unit frame bodies, symmetrically arranging two ends of an ultrahigh platform frame body operation traffic area 1, arranging a plate folding machine operation area 2 and a color steel plate stacking area 3 in the middle of an operation platform, arranging different vertical rod intervals in different areas, wherein the operation traffic area 1 adopts the vertical rod interval of 0.9m multiplied by 0.9m, the plate folding machine operation area 2 adopts the vertical rod interval of 0.6m multiplied by 0.6m, the color steel plate stacking area 3 adopts the vertical rod interval of 0.6m multiplied by 0.3m, the step distance is 1.5m, the two layers of step distances at the top are 1m, selecting three specifications of horizontal rods of B-SG-300, B-SG-600 and B-SG-900, facilitating the assembly construction of disc fasteners, simultaneously erecting frame bodies in each area by an operation team group, connecting rod pieces among the frame bodies in each area, arranging a horizontal support, a horizontal safety flat net and a pocket net, arranging a horizontal shear support every 5-7m, the vertical diagonal of support body is full to be set up, designs horizontal pocket net in 10m, 20m elevation department, and the peripheral round of 27m elevation department operation scaffold frame sets up 2m wide level and chooses the net.
In order to enhance the overall rigidity of the scaffold for full hall operation, fastener type horizontal cross braces are arranged between steel pipes of the scaffold body, the width of each horizontal cross brace is 5-8m, the horizontal cross braces are vertically spaced by 4-6 standard steps, and the angle of each horizontal cross brace is controlled to be 45-60 degrees, as shown in fig. 2.
The dish knot formula operation scaffold body subregion sets up vertical down tube, takes the tube-shape to add the vertical down tube arrangement scheme of well grid formula, and the vertical down tube is laid to core stress zone fill, and the down tube in non-core stress zone is separated the three-span and is laid, as shown in fig. 3, arranges vertical down tube in every span in operation scaffold body top layer stride.
The frame body protection measures are that a horizontal safety flat net is arranged every 5-7m on the operation platform, a horizontal outward-projecting net is arranged at the elevation of the frame body close to the top, personnel or materials are prevented from falling, and the stability of the frame body is reinforced.
When the plate buckle frame bodies are combined and erected in different areas, the operation teams and groups simultaneously erect the frame bodies in different areas, and then the rod pieces among the frame bodies in different areas are connected, so that the requirement that the height-width ratio of the frame bodies is not more than 3:1 is met.
S2, measurement and setting: according to the arrangement drawing of the scaffold body, the longitudinal and transverse positioning lines at the center of the upright rod of the scaffold body are popped up on the base layer, marking is done, the base layer is formed by assembling and splicing prefabricated concrete plates with the thickness of 200-plus-300 mm and C25 in a blocking manner, the prefabricated concrete plates are protected by angle steel angle protectors with the thickness of 25mm multiplied by 25mm and are directly laid on the tamped base layer soil, drainage ditches are arranged on the periphery of the base layer soil, and the prefabricated concrete plates are arranged in staggered joints and are sealed and encapsulated by cement mortar.
S3, paving a channel steel base plate: a shock-absorbing rubber pad is laid on the positioning line firstly, then channel steel is placed, shock absorption is slow during mechanical operation, the horizontal state is kept, and the lower part of the vertical rod is leveled by a base.
S4, installing a working scaffold system: the vertical rods are installed, the cross rods and the vertical rods are installed in a matched mode at the same time, then the inclined rods are installed, the installation of the frame body is achieved, and the disc buckling type operation scaffold is installed in three areas of operation team and group at the same time, as shown in fig. 4.
The operation scaffold system is specifically installed as follows:
installing a vertical rod: two adjacent upright posts are different in length specification, or the adjacent upright post connecting sleeves are reversed and staggered, so that the spigot-and-socket joints of the upright posts are not on the same horizontal plane, the lower first-layer upright post is installed firstly, after the first-layer frame body is corrected and molded, the upright posts are lengthened and installed, the upright posts are in spigot-and-socket connection through the upright post connecting sleeves, and the gap between the inner diameter of the sleeve and the outer diameter of the upright post steel pipe is less than or equal to 2 mm;
installing a cross bar: during installation, the cross rod bolt is not tightly knocked, the cross rod is installed layer by layer along with the lengthening of the vertical rod, the end part of the cross rod is sleeved into the position of the small hole of the disc, so that the front end of the cross rod is abutted against the circular tube of the vertical rod, and then the cross rod is tightly knocked and fixed by penetrating the small hole through the inclined wedge, so that the disc buckling type installation is realized; the height of the center line of the horizontal rod at the bottommost layer of the floor sweeping rod from the bottom plate of the adjustable base is not more than 550 mm;
installing an inclined rod: after the horizontal adjustment of the frame body is finished, installing an inclined rod, forming a triangular stress system with the vertical rod and the cross rod when the inclined rod is installed, assembling and erecting vertical inclined rods in a clockwise direction or a counterclockwise direction, sleeving the vertical inclined rods into the positions of the large holes of the disc, enabling the front ends of the vertical inclined rod heads to abut against the circular tubes of the vertical rods, penetrating the large holes by using an inclined wedge for fastening and fixing, and after the inclined rod is installed, hammering the cross rod and inclined rod bolts one by using a hammer, wherein the bolt tightening degree is based on bolt scale marks;
peripheral pulling and knotting: fastening the steel column with a wall-connecting double horizontal rod and two vertical rod fasteners and an operation scaffold body, wherein the distance between a first operation scaffold body reinforcing member on the steel column and the ground is 2.2m, and the distance between the reinforcing members on the steel column along the height direction is 6-9 m;
the horizontal spacing of the double horizontal rods of the connecting wall is not more than 3 spans, and disc buckling type lattice columns are additionally arranged when the spacing requirement is not met, and due to the fact that the spacing between the steel columns is larger, lattice columns (with the specification of 900mm x 900mm and 900mm x 600 mm) are additionally arranged between the steel columns, the lattice columns are connected with the operation scaffold body through disc buckling transverse rods, and the first floor sweeping rods of the lattice columns are connected with the sweeping rods of the operation scaffold body;
and disc buckle cross rods are adopted to be communicated and connected every 4-6 steps between the lattice columns, as shown in figure 5, rigid connection and flexible connection are combined to draw a knot with a disc buckle frame body on a non-adjacent side of a building, a steel wire rope or a steel pipe is arranged to be crossed and is obliquely pulled with a disc buckle vertical rod, the angle of an oblique pull rope or a common steel pipe is 45-60 degrees, and the steel wire rope or the steel pipe is obliquely pulled at the elevation of 10m and 20m, as shown in figure 6.
After each step of lapping between the rod bodies, correcting the step pitch of the cross rod, the longitudinal and transverse pitches of the vertical rod, the vertical deviation of the vertical rod and the horizontal deviation of the cross rod, and controlling the vertical deviation of the vertical rod to be not more than H/500 and not more than 50 mm.
S5, jacking and installing: after the frame body is installed, a screw rod at the bottom of the U-shaped adjusting seat is inserted into the top of the vertical rod, the height of the cross rod at the uppermost row of the vertical rod from an adjustable supporting plate of the U-shaped adjusting seat is not more than 650mm, the exposed length of the screw rod is not more than 400mm, and the length of the screw rod inserted into the vertical rod is not less than 150 mm;
s6, mounting a jacking operation beam: the core stress area adopts a 14# channel steel beam, the channel steel length is 4.3m and 1.88m, the non-core stress area adopts a double-layer steel pipe phi 48 steel pipe as the beam, the steel pipe length is 18.0m and 5.5m, the steel pipe supports the beam, the steel pipe specification is unified, and the longitudinal and transverse steel pipes are arranged in a staggered mode to improve the overall stability, as shown in fig. 7.
S7, mounting the steel scaffold board: a15 mm steel plate is spot-welded on a channel steel beam in a core stress area, steel fence pieces are laid on a double-layer steel pipe in a non-core stress area, and a 0.2m high baffle baseboard, a protective railing and a 1.5m high disc buckle type enclosure are arranged on the outer side of a baseboard, as shown in figure 8.
S8, installing a steel ladder: a disc buckle type steel ladder stand is arranged on the side surface of the operation scaffold, and a safety net is fully hung on the inner side of the steel ladder stand;
s9, dismantling the operation scaffold system: after the construction of the roof color steel tile is finished, the scaffold plate, the operation cross beam, the U-shaped adjusting seat, the inclined rod, the cross rod and the vertical rod are sequentially disassembled, the floor-by-floor disassembly, classification, packaging and transportation and loading are carried out, and the aspect ratio of the minimum remaining area during the disassembly is not more than 3: 1.
In the embodiment, the design optimization is carried out on the plate buckle frame body, the operation scaffold system adopts a socket type plate buckle type operation scaffold, an ultra-thick prefabricated concrete foundation cushion layer is designed, reinforcement measures are taken, damage during construction operation is avoided, the design optimization is carried out on the plate buckle type operation scaffold, the operation scaffold system adopts a socket type plate buckle type scaffold, the plate buckle type operation scaffold is divided into regions and combined to be erected according to the use function region of the frame body, the distance between rods is reasonably arranged, the assembly and the lap joint are convenient, the waste of materials and labor cost is reduced, the construction efficiency is improved, and the use is convenient;
the forms of the cross braces, the horizontal safety nets and the wall connecting parts are optimized, the steel columns adopt double steel pipe wall connecting parts, rigid connection and flexible connection are combined with reinforcing of the plate buckle frame bodies on the non-adjacent sides of the building, and the anti-overturning effect is good; the inclined rod of the frame body of the disc buckle is designed in a partition mode, so that the structural strength and the protection of the frame body and the overall stability of the frame body are enhanced; the vertical rod jacking cross beam is arranged in a partitioned mode, a channel steel cross beam is arranged in a core stress area, a double-layer steel pipe cross beam is arranged in a non-core stress area, the cross beam specification is unified, double-layer steel pipes are arranged in a criss-cross mode, and the overall stability is good; a steel plate is spot-welded on the channel steel of the core stress area, so that the bearing capacity is improved, and the device is safe and reliable; guardrail bar is prevented shaking by the buckle formula of mounting disc, arranges in a flexible way, and is safe convenient, can have enough to meet the need the use, reduces the input of consumptive material and turnover material, reduce cost, reduction of construction period.
In the embodiment, the area of the project template of the vehicle-mounted 3D cover glass production line is about 3920m2In the traditional operation scaffold scheme, the steel pipe lease cost per square meter is 1.0 yuan/day, and the construction task is completed in about 38 days, so that the steel pipe lease cost can be saved by 3920 × 1.0 × (38-30) =31360 yuan. The project construction by using the method has good economic benefit, saves cost and improves construction efficiency.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The construction method of the ultrahigh operation platform disc buckle type operation scaffold system is characterized by comprising the following steps of: the method comprises the following steps:
s1, arranging the operation scaffold body in a partition mode: according to the load condition, a partition combined design platform of the disc buckle type operation scaffold is adopted: the operation traffic area is used as a non-core stress area, the mechanical operation area of the equipment and the material stacking area are used as basic frame parameters of the core stress area to be set, different vertical rod intervals are arranged in different areas, and inclined rods, horizontal cross braces, horizontal safety flat nets and tuck nets are arranged;
s2, measurement and setting: popping up a longitudinal positioning line and a transverse positioning line at the center of a frame upright stanchion on a base layer according to an arrangement drawing of the operation scaffold frame body, and marking;
s3, paving a channel steel base plate: paving a damping rubber pad on the positioning line, then placing channel steel, damping and resisting during mechanical operation, keeping the channel steel horizontal, and leveling the lower part of the vertical rod by using a base;
s4, installing a working scaffold system: installing the vertical rods, installing the cross rods and the vertical rods in a matched mode, and then installing the inclined rods to achieve installation of the frame body;
s5, jacking and installing: after the frame body is installed, a screw rod at the bottom of the U-shaped adjusting seat is inserted into the top of the vertical rod, the height of the cross rod at the uppermost row of the vertical rod from an adjustable supporting plate of the U-shaped adjusting seat is not more than 650mm, the exposed length of the screw rod is not more than 400mm, and the length of the screw rod inserted into the vertical rod is not less than 150 mm;
s6, mounting a jacking operation beam: the core stress area adopts a channel steel beam, the non-core stress area adopts a double-layer steel pipe as a beam, and the steel pipe is arranged on the jacking;
s7, mounting the steel scaffold board: a 15mm steel plate is spot-welded on a channel steel beam in a core stress area, a steel fence sheet is laid on a double-layer steel pipe in a non-core stress area, and a foot baffle plate and a protective railing are arranged on the outer side of a scaffold plate;
s8, installing a steel ladder: a disc buckle type steel ladder stand is arranged on the side surface of the operation scaffold, and a safety net is fully hung on the inner side of the steel ladder stand;
s9, dismantling the operation scaffold system: after the construction of the roof color steel tile is finished, the scaffold plate, the operation cross beam, the U-shaped adjusting seat, the inclined rod, the cross rod and the vertical rod are sequentially disassembled, the floor-by-floor disassembly, classification, packaging and transportation and loading are carried out, and the aspect ratio of the minimum remaining area during the disassembly is not more than 3: 1.
2. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 1, characterized in that: in the step S2, the base layer is formed by assembling prefabricated concrete plates of 200-300mm thick and C25 in blocks, the prefabricated concrete plates are protected by angle steel angle protectors of 25mm × 25mm and directly laid on the rammed base layer soil, drainage ditches are arranged at the periphery, and the prefabricated concrete plates are arranged in staggered joints and are tightly encapsulated by cement mortar.
3. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 1, characterized in that: in step S4, the operation scaffold system is specifically installed as follows:
installing a vertical rod: two adjacent upright posts are different in length specification, or the adjacent upright post connecting sleeves are reversed and staggered, so that the spigot-and-socket joints of the upright posts are not on the same horizontal plane, the lower first-layer upright post is installed firstly, after the first-layer frame body is corrected and molded, the upright posts are lengthened and installed, the upright posts are in spigot-and-socket connection through the upright post connecting sleeves, and the gap between the inner diameter of the sleeve and the outer diameter of the upright post steel pipe is less than or equal to 2 mm;
installing a cross bar: during installation, the cross rod bolt is not tightly knocked, the cross rod is installed layer by layer along with the lengthening of the vertical rod, the end part of the cross rod is sleeved into the position of the small hole of the disc, so that the front end of the cross rod is abutted against the circular tube of the vertical rod, and then the cross rod is tightly knocked and fixed by penetrating the small hole through the inclined wedge, so that the disc buckling type installation is realized; the height of the center line of the horizontal rod at the bottommost layer of the floor sweeping rod from the bottom plate of the adjustable base is not more than 550 mm;
installing an inclined rod: after the horizontal adjustment of the frame body is finished, installing an inclined rod, forming a triangular stress system with the vertical rod and the cross rod when the inclined rod is installed, assembling and erecting vertical inclined rods in a clockwise direction or a counterclockwise direction, sleeving the vertical inclined rods into the positions of the large holes of the disc, enabling the front ends of the vertical inclined rod heads to abut against the circular tubes of the vertical rods, penetrating the large holes by using an inclined wedge for fastening and fixing, and after the inclined rod is installed, hammering the cross rod and inclined rod bolts one by using a hammer, wherein the bolt tightening degree is based on bolt scale marks;
peripheral pulling and knotting: buckling a wall-connecting double-horizontal rod and two vertical rod fasteners at the positions of the steel columns, wherein the horizontal distance between the wall-connecting double-horizontal rods is not more than 3 spans, and a disc-buckling lattice column is additionally arranged when the distance requirement is not met, and the operation scaffold is reliably pulled to be connected with the surrounding built structure at intervals of 4-6 steps in the vertical direction; the plate buckle frame body on the non-adjacent side of the building adopts a rigid connection and flexible connection combined drawknot measure, and is provided with a steel wire rope or a steel pipe which is crossed and obliquely pulled with the plate buckle upright rod, and the steel wire rope or the steel pipe is obliquely pulled at the elevation positions of 10m and 20 m.
4. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 3, characterized in that: in step S4, after each step between the rods, the step pitch of the cross bar, the vertical and horizontal pitches of the vertical rod, the vertical deviation of the vertical rod, and the horizontal deviation of the cross bar are corrected, and the vertical deviation of the vertical rod is controlled not to be greater than H/500 and not to be greater than 50 mm.
5. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 1, characterized in that: in step S1, on the premise of satisfying the load, the design of the unit frame is optimized, two ends of the ultrahigh platform frame operation traffic area are symmetrically arranged, and the equipment mechanical operation area and the material stacking area are arranged in the middle of the operation platform;
the working traffic area adopts the space between the upright posts to be 0.9m multiplied by 0.9m, the mechanical operation area of the equipment adopts the space between the upright posts to be 0.6m multiplied by 0.6m, the material stacking area adopts the space between the upright posts to be 0.6m multiplied by 0.3m, the step pitch is 1.5m, and the step pitch of the two layers at the top is 1 m.
6. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 1, characterized in that: in the step S1, in order to enhance the overall rigidity of the full hall operation scaffold, fastener type horizontal cross braces are arranged between steel pipes of the scaffold body, the width of each horizontal cross brace is 5-8m, the horizontal cross braces are vertically spaced by 4-6 standard steps, and the angle of each horizontal cross brace is controlled to be 45-60 degrees;
the frame body protection measures are that a horizontal safety flat net is arranged every 5-7m on the operation platform, a horizontal outward-projecting net is arranged at the elevation of the frame body close to the top, personnel or materials are prevented from falling, and the stability of the frame body is reinforced.
7. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 1, characterized in that: in the step S1, vertical diagonal rods are arranged in partition of the disc buckling type operation scaffold body, a cylindrical well-adding grid type vertical diagonal rod arrangement scheme is adopted, the vertical diagonal rods are fully laid in the core stress area, the diagonal rods in the non-core stress area are arranged at three spans, and the vertical diagonal rods are arranged at each span in the top step pitch of the operation scaffold body.
8. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 1, characterized in that: in step S1, when the plate buckle frame is erected in a sectional combination manner, the operation team simultaneously erects the frame bodies in each region, and then the rod members in the frame bodies in each region are connected to meet the requirement that the height-to-width ratio of the frame bodies is not more than 3: 1.
9. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 1, characterized in that: in step S6, when the steel tube beam is supported, the steel tube specification is unified to be phi 48, and the double-layer steel tubes are arranged in a criss-cross manner, so as to improve the overall stability.
10. The construction method of the ultrahigh operating platform disc buckle type operating scaffold system according to claim 1, characterized in that: in the step S7, a 0.2m high-blocking baseboard and a 1.5m high-disc buckle type enclosure are arranged around the hanging buckle type steel scaffold board.
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| CN116479938A (en) * | 2023-04-20 | 2023-07-25 | 中铁一局集团市政环保工程有限公司 | Main body structure construction process of buried sewage treatment plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116479938A (en) * | 2023-04-20 | 2023-07-25 | 中铁一局集团市政环保工程有限公司 | Main body structure construction process of buried sewage treatment plant |
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