CN111005547B - Construction method of outer scaffold of two-way bending and twisting staggered floor elevation - Google Patents
Construction method of outer scaffold of two-way bending and twisting staggered floor elevation Download PDFInfo
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- CN111005547B CN111005547B CN201911421533.6A CN201911421533A CN111005547B CN 111005547 B CN111005547 B CN 111005547B CN 201911421533 A CN201911421533 A CN 201911421533A CN 111005547 B CN111005547 B CN 111005547B
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- 238000010276 construction Methods 0.000 title claims abstract description 41
- 238000005452 bending Methods 0.000 title claims abstract description 24
- 238000007667 floating Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract 2
- 238000009415 formwork Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000010408 sweeping Methods 0.000 claims description 12
- 241000250967 Branchia Species 0.000 claims description 5
- 238000010586 diagram Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 4
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
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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
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
- E04G3/243—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the outside contour of a building
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/16—Struts or stiffening rods, e.g. diagonal rods
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a construction method of an outer scaffold of a two-way bending and twisting staggered floor elevation, which comprises the following steps: the method comprises the steps of (a) setting up upright rods of a scaffold, (b) setting up outer scaffold at a corner arc position, (c) processing the relation between a structural floating plate support and the outer scaffold, (d) setting up the scaffold of an elevator shaft, (e) setting up the outer scaffold at a construction elevator position, and (f) setting up a construction inclined ladder, wherein four corners of a bidirectional bending staggered floor elevation building are arc-shaped, longitudinal horizontal rods and a scissor brace at the position are pre-bent on site according to the radian of the structure, the outer elevation of the outer scaffold is close to a main structure, and the scissor brace is tightly combined with a frame body.
Description
Technical Field
The invention relates to the field of scaffolds, in particular to a construction method of an outer scaffold of a two-way bending and twisting staggered floor elevation.
Background
Modern buildings are not only limited to the functionality of the building technology to date, but also pay more attention to the aesthetic feeling of the building model on the premise of meeting various basic functional requirements, so that a large number of special-shaped buildings with different appearance styles are promoted, and for the bidirectional twisting layer facade building, the structure of the building is a bidirectional twisting structure, the internal shrinkage and the external expansion exist simultaneously, the outer facade is complicated in shape and uneven, the traditional double-row scaffold construction cannot be adopted, in addition, the building of the bidirectional twisting layer facade has the extension shrinkage, and the requirement that the inner upright post of the outer scaffold is not more than 30cm away from the edge of the building cannot be met.
Disclosure of Invention
In order to solve the problems, the invention provides a construction method of an outer scaffold suitable for a two-way bending and twisting staggered floor elevation of a two-way bending and twisting staggered floor elevation building.
In order to achieve the above purpose, the invention adopts the following technical scheme: the construction method of the outer scaffold of the two-way bending and twisting staggered floor elevation comprises the following steps:
(a) Measuring and positioning of the vertical rod of the scaffold: according to the arrangement of the outermost periphery projection lines after the projection overlapping of the outermost periphery edge lines of each layer, determining the vertical rod position to obtain projection lines of each layer and a scaffold erection plan schematic diagram;
(b) And (3) erecting an outer scaffold at the corner arc position: the transverse horizontal rod and the scissor support at the corner arc position of the building are bent according to the structural radian, the vertical face of the outer scaffold approaches to the main body structure, and the scissor support is tightly combined with the scaffold body;
(c) And (3) processing the building relation of the structural floating plate support and the outer scaffold: the erection of the full-hall ultra-high formwork support between the outer scaffold and the structure is consistent with the progress of the outer scaffold, the full-hall ultra-high formwork top frame is used as an inner row of protection frames, the distance between the upright rods of the innermost full-hall support frame and the outer side of the structure is not more than 300mm, the full-hall ultra-high formwork support is arranged between the innermost two rows of outer scaffold and the structure floating plate, the erection of the full-hall ultra-high formwork support is consistent with the progress of the outer scaffold, the full-hall ultra-high formwork top frame is used as an inner row of protection frames, the distance between the upright rods of the innermost full-hall support frame and the outer side of the structure is not more than 300mm, a flat bridge is paved between the innermost two rows of upright rods, and a safety net is hung for protection;
(d) Building an elevator shaft scaffold: the vertical rods are longitudinally spaced by 0.5m-1.5m, transversely spaced by 0.6m-1.4m and have a step distance of 1m-3m, the vertical rods are not more than 300mm away from the wall, the vertical rods are arranged along the periphery of a hoistway, the horizontal rods are required to tightly prop up side beams or ring beams of each layer firmly, and the construction operation layer is fully paved with steel bar grid scaffold plates;
(e) Building an outer frame of a construction elevator position: the transverse distance between the vertical rods of the construction elevator platform is 0.6m-1.4m, the construction elevator platform and the outer scaffold have the same width, the construction elevator platform is independently erected and disconnected with the outer scaffold, the vertical rods at the two sides and the middle of the platform are respectively provided with a rigid wall connecting piece, and the vertical rods of the outer scaffold at the disconnection position are also respectively provided with a rigid wall connecting piece at the structure of each floor;
(f) Building a construction inclined ladder: the vertical distance of the stair sloping plate upright rod is 0.5m-1.5m, the vertical distance of the rest platform is 0.5m-1.5m, the transverse distance of the stair upright rod is 0.5m-2.5m, and the step distance of the upright rod is 1.2-2.4 m;
(g) Setting of wall connecting pieces: adopting a branchia 48 steel pipe as a wall connecting piece, embedding the branchia 48 vertical short steel pipe at a position on the outer boundary beam corresponding to an inner upright rod of the scaffold, extending the vertical short steel pipe to about 100mm-300mm out of the floor, and fastening and connecting the wall connecting piece with the embedded upright steel pipe and the inner upright rod of the outer scaffold through at least two right-angle fasteners; the wall connecting piece is connected with the full high formwork support frame body, the outer scaffold support frame body is firmly connected with the full high formwork support frame by adopting a steel pipe fastening piece, and the corresponding full high formwork support frame cannot be dismantled before the outer scaffold is dismantled.
The outer scaffold comprises a base, a vertical rod, a scissor support, a horizontal rod and a scaffold plate, wherein the base is provided with a longitudinal sweeping rod and a transverse sweeping rod, and the transverse sweeping rod is fixed on the vertical rod close to the lower part of the longitudinal sweeping rod through a right-angle fastener; the horizontal rod comprises a longitudinal horizontal rod and a transverse horizontal rod, the longitudinal horizontal rod is fixed on the inner side of the vertical rod, the transverse horizontal rod is arranged below the longitudinal horizontal rod, and the scissor brace is fixed on the extending end of the transverse horizontal rod or the vertical rod which is intersected with the scissor brace through a rotary fastener.
Further, in the step (b), triangular reinforcing rods are arranged between the transverse horizontal rods at intervals along the bending arc direction.
Further, the number of the cross upright posts of each pair of scissors is 5-7, the width of each pair of scissors is not smaller than 4, the inclination angle of each pair of scissors and the ground is preferably 45-60 degrees, the scissors are connected with the upright posts through rotary buckles, the distance from the central line of each rotary buckle to a main node is not more than 150mm, and the scissors are lapped and fixed through at least three buckles.
Further, the outer scaffold is divided into a basement and a ground structure to be erected in sections.
Further, in the step (b), the distance between the inner upright post of the flat bridge of the outer scaffold and the outer side of the floating plate line or the outer wall edge is not more than 30cm, the width of the flat bridge is 60cm-140cm, and the flat bridge is widened inwards.
Further, the width of the flat bridge is larger than 40cm, and a small cross bar widening the inner column is provided with a diagonal bracing and a supporting or inner vertical rod at the inner side.
In the step (d), after the floor structure is poured with concrete, the safety protection railing is arranged at the peripheral edge of the structure, and the safety net with dense meshes is hung fully.
Further, in the step (d), the operation layer of the scaffold board is provided with a guard rail and skirting boards, the height of the skirting boards is 150mm-200mm, and the number of the guard rails is at least 2.
The invention has the beneficial effects that: the four corners of the two-way bending staggered floor elevation building are arc-shaped, the longitudinal horizontal rods and the scissor struts at the positions are pre-bent on site according to the radian of the structure, the outer elevation of the outer frame is close to the main structure, and the scissor struts are tightly combined with the frame body, so that the two-way bending staggered floor elevation building is suitable for the two-way bending staggered floor elevation building; the building floor slab has the advantages that the building floor slab is stretched and contracted, a large number of floating plate supports exist, the construction method is used for processing the building floor slab support and the building floor slab outer scaffold, a full-hall ultra-high formwork support is arranged between the building floor slab and the building floor slab, the full-hall ultra-high formwork top frame is used as an inner row of protection frames to be erected together with the building floor slab outer scaffold, and the whole building floor slab system is safer.
Drawings
FIG. 1 is a schematic plan view of projection lines and scaffold setup for each layer;
FIG. 2 is a schematic view of the structure of an outer scaffold;
FIG. 3 is an elevation view of an outer scaffold set-up corner arc;
FIG. 4 is a front elevation view of a construction ramp;
fig. 5 is a side elevation view of the construction elevator outer frame.
Detailed Description
Referring to fig. 1-5, the invention relates to a construction method of an external scaffold of a two-way bending and twisting staggered floor elevation, which comprises the following steps:
(a) Measuring and positioning of the vertical rod of the scaffold: according to the arrangement of the outermost periphery projection lines after the projection overlapping of the outermost periphery edge lines of each layer, determining the position of the vertical rod 2 to obtain projection lines of each layer and a scaffold erection plan schematic diagram;
(b) And (3) erecting an outer scaffold at the corner arc position: the transverse horizontal rod 8 and the scissor support 9 at the corner arc position of the building are bent according to the structural radian, the outer scaffold vertical surface is close to the main body structure, and the scissor support 9 is tightly combined with the frame body;
(c) And (3) processing the building relation of the structural floating plate support and the outer scaffold: a full-hall ultra-high formwork support is arranged between the outer scaffold and the structural floating plate, the erection of the full-hall ultra-high formwork support is consistent with the progress of the outer scaffold, the full-hall ultra-high formwork top frame is used as an inner row of protection frames, the distance between the upright rods of the innermost full-hall support and the outer side of the structure is not more than 300mm, a flat bridge is paved between the two innermost rows of upright rods, and a safety net is hung for protection;
(d) Building an elevator shaft scaffold: the vertical rods are longitudinally spaced by 0.5m-1.5m, transversely spaced by 0.6m-1.4m and have a step distance of 1m-3m, the vertical rods are not more than 300mm away from the wall, the vertical rods are arranged along the periphery of a hoistway, the horizontal rods are required to tightly prop up side beams or ring beams of each layer firmly, and the construction operation layer is fully paved with steel bar grid scaffold plates;
(e) Building an outer frame of a construction elevator position: the transverse distance between the vertical rods of the construction elevator platform is 0.6m-1.4m, the construction elevator platform and the outer scaffold have the same width, the construction elevator platform is independently erected and disconnected with the outer scaffold, the vertical rods at the two sides and the middle of the platform are respectively provided with a rigid wall connecting piece, and the vertical rods of the outer scaffold at the disconnection position are also respectively provided with a rigid wall connecting piece at the structure of each floor;
(f) Building a construction inclined ladder: the vertical distance of the stair sloping plate upright rod is 0.5m-1.5m, the vertical distance of the rest platform is 0.5m-1.5m, the transverse distance of the stair upright rod is 0.5m-2.5m, and the step distance of the upright rod is 1.2-2.4 m;
(g) Setting of wall connecting pieces: adopting a branchia 48 steel pipe as a wall connecting piece, embedding 48 vertical short steel pipes on the outer edge beam at positions corresponding to the inner vertical rods 2 of the scaffold, extending the vertical short steel pipes to about 100-300 mm out of the floor, and fastening and connecting the wall connecting piece with the embedded vertical steel pipes and the inner vertical rods of the outer scaffold through at least two right-angle fasteners; the wall connecting piece is connected with the full high formwork support frame body, the outer scaffold support frame body is firmly connected with the full high formwork support frame by adopting a steel pipe fastening piece, and the corresponding full high formwork support frame cannot be dismantled before the outer scaffold is dismantled.
In this embodiment, referring to fig. 2 and 3, the outer scaffold includes a base 1, a vertical rod 2, a scissor support 9, a horizontal rod and a scaffold board, the base 1 is provided with a longitudinal sweeping rod 4 and a transverse sweeping rod 5, and the transverse sweeping rod 5 is fixed on the vertical rod 2 near the lower part of the longitudinal sweeping rod 4 through a right-angle fastener; the horizontal bars comprise a longitudinal horizontal bar and a transverse horizontal bar 8, the longitudinal horizontal bar is fixed on the inner side of the vertical bar 2, the transverse horizontal bar 8 is arranged below the longitudinal horizontal bar, and the scissors support 9 is fixed on the extending end of the transverse horizontal bar 8 or the vertical bar 2 intersecting with the scissors support through a rotary fastener.
In this embodiment, referring to fig. 3, in step (b), triangular reinforcing rods are disposed between the transverse horizontal rods 8 and the transverse horizontal rods 8 along the bending arc direction thereof at intervals.
In the embodiment, the number of each pair of scissors supporting rods 9 crossing the vertical rod 2 is 5-7, the width of each pair of scissors supporting rods 9 is not smaller than 4 spans and not smaller than 6m, the inclination angle between each pair of scissors supporting rods 9 and the ground is preferably 45-60 degrees, the scissors supporting rods 9 are connected with the vertical column through rotary buckles, the distance from the central line of each rotary buckle to the main node is not more than 150mm, and the scissors supporting rods 9 are fixedly overlapped through at least three buckles.
In this embodiment, the outer scaffold is divided into a basement and a ground structure to be erected in sections.
In the embodiment, in the step (c), the distance between the inner upright post of the flat bridge of the outer scaffold and the outside of the floating plate line or the outer wall edge is not more than 30cm, the width of the flat bridge is 60cm-140cm, and the flat bridge is widened inwards.
Further, the width of the flat bridge is larger than 40cm, and a small cross bar widening the inner column is provided with a diagonal bracing and a supporting or inner vertical rod at the inner side.
In the embodiment, in the step (d), after the concrete is poured into the floor structure, the safety guard rail is arranged at the peripheral edge of the structure, and the dense mesh safety net is hung fully.
Further, in the step (d), the operation layer of the scaffold board is provided with a guard rail and a skirting board, the height of the skirting board is 150mm-200mm, the number of the guard rails is at least 2, preferably, the height of the skirting board is 180mm, and the number of the guard rails is 2.
The above embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (9)
1. The construction method of the outer scaffold of the two-way bending and twisting staggered floor elevation is characterized by comprising the following steps of: the method comprises the following steps:
(a) Measuring and positioning of the vertical rod (2) of the scaffold building: according to the arrangement of the outermost periphery projection lines after the projection overlapping of the outermost periphery edge lines of each layer, determining the position of the vertical rod (2) to obtain projection lines of each layer and a scaffold erection plan schematic diagram;
(b) And (3) erecting an outer scaffold at the corner arc position: a transverse horizontal rod (8) and a scissor support (9) at the corner arc position of the building are bent according to the structural radian, the vertical face of the outer scaffold is close to the main body structure, and the scissor support (9) is tightly combined with the scaffold body;
(c) And (3) processing the building relation of the structural floating plate support and the outer scaffold: a full-hall ultra-high formwork support is arranged between the outer scaffold and the structural floating plate, the erection of the full-hall ultra-high formwork support is consistent with the progress of the outer scaffold, the full-hall ultra-high formwork top support is used as an inner row of protection frames, the distance between the upright rods (2) of the innermost full-hall support and the outer side of the structure is not more than 300mm, a flat bridge is paved between the two innermost rows of upright rods (2), and a safety net is hung for protection;
(d) Building an elevator shaft scaffold: the vertical rods are longitudinally spaced by 0.5m-1.5m, transversely spaced by 0.6m-1.4m and have a step distance of 1m-3m, the vertical rods are not more than 300mm away from the wall, the vertical rods are arranged along the periphery of a hoistway, the horizontal rods are required to tightly prop up side beams or ring beams of each layer firmly, and the construction operation layer is fully paved with steel bar grid scaffold plates;
(e) Building an outer frame of a construction elevator position: the transverse distance between the vertical rods of the construction elevator platform is 0.6m-1.4m, the construction elevator platform and the outer scaffold have the same width, the construction elevator platform is independently erected and disconnected with the outer scaffold, the vertical rods at the two sides and the middle of the platform are respectively provided with a rigid wall connecting piece, and the vertical rods of the outer scaffold at the disconnection position are also respectively provided with a rigid wall connecting piece at the structure of each floor;
(f) Building a construction inclined ladder: the vertical distance of the stair sloping plate upright rod is 0.5m-1.5m, the vertical distance of the rest platform is 0.5m-1.5m, the transverse distance of the stair upright rod is 0.5m-2.5m, and the step distance of the upright rod is 1.2-2.4 m;
(g) Setting of wall connecting pieces: adopting a branchia 48 steel pipe as a wall connecting piece, embedding the branchia 48 vertical short steel pipe at the position on the outer edge beam corresponding to the inner upright rod of the scaffold, extending the vertical short steel pipe 100-300 mm out of the floor, and respectively fastening and connecting the wall connecting piece with the embedded vertical steel pipe and the inner upright rod of the outer scaffold through at least two right-angle fasteners; when part of the outer scaffold is far away from the outer side of the floating plate line or the outer wall edge, the wall connecting piece is connected with the full-hall high formwork support frame body, the outer scaffold support body is firmly connected with the full-hall high formwork support frame by adopting a steel pipe fastening piece, and the corresponding full-hall high formwork support frame cannot be dismantled before the outer scaffold is dismantled.
2. The construction method of the external scaffold for the two-way bending and twisting staggered floor elevation according to claim 1, which is characterized in that: the outer scaffold comprises a base (1), a vertical rod (2), a scissor brace (9), a horizontal rod and a scaffold board, wherein a longitudinal sweeping rod (4) and a transverse sweeping rod (5) are arranged on the base (1), and the transverse sweeping rod (5) is fixed on the vertical rod (2) close to the lower part of the longitudinal sweeping rod (4) through a right-angle fastener; the horizontal rod comprises a longitudinal horizontal rod and a transverse horizontal rod (8), the longitudinal horizontal rod is fixed on the inner side of the vertical rod (2), the transverse horizontal rod (8) is arranged below the longitudinal horizontal rod, and the scissor support (9) is fixed on the extending end of the transverse horizontal rod (8) intersecting with the scissor support or the vertical rod (2) through a rotary fastener.
3. The construction method of the external scaffold for the two-way bending and twisting staggered floor elevation according to claim 1, which is characterized in that: in the step (b), triangular reinforcing rods are arranged between the transverse horizontal rods at intervals along the bending arc direction.
4. The construction method of the external scaffold for the two-way bending and twisting staggered floor elevation according to claim 1, which is characterized in that: the number of each pair of scissors supporting rods (9) crossing the upright posts (2) is 5-7, the width of each pair of scissors supporting rods (9) is not smaller than 4 spans and is not smaller than 6m, the inclination angle of each pair of scissors supporting rods (9) and the ground is preferably 45-60 degrees, the scissors supporting rods (9) are connected with the upright posts through rotary buckles, the distance from the central line of each rotary buckle to a main node is not greater than 150mm, and the scissors supporting rods (9) are fixedly overlapped through at least three buckles.
5. The construction method of the external scaffold for the two-way bending and twisting staggered floor elevation according to claim 1, which is characterized in that: the outer scaffold is divided into a basement and an overground structure to be erected in sections.
6. The construction method of the external scaffold for the two-way bending and twisting staggered floor elevation according to claim 1, which is characterized in that: in the step (c), the distance between the inner upright post of the flat bridge of the outer scaffold and the outer side of the floating plate line or the outer wall edge is not more than 30cm, the width of the flat bridge is 60cm-140cm, and the flat bridge is widened inwards.
7. The construction method of the external scaffold for the two-way bending and twisting staggered floor elevation, which is characterized by comprising the following steps of: the width of the flat bridge is larger than 40cm, and the small cross rod of the widened inner column is provided with an inclined strut for supporting or an inner vertical rod at the inner side.
8. The construction method of the external scaffold for the two-way bending and twisting staggered floor elevation according to claim 1, which is characterized in that: in the step (d), after the floor structure is poured with concrete, the safety protection railing is arranged on the peripheral edge of the structure, and the dense safety net is hung fully.
9. The construction method of the external scaffold for the two-way bending and twisting staggered floor elevation according to claim 8, wherein the construction method comprises the following steps: in the step (d), the operation layer of the scaffold board is provided with the guard rails and skirting boards, the height of the skirting boards is 150-200 mm, and the number of the guard rails is at least 2.
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| CN201911421533.6A CN111005547B (en) | 2019-12-31 | 2019-12-31 | Construction method of outer scaffold of two-way bending and twisting staggered floor elevation |
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| CN201911421533.6A CN111005547B (en) | 2019-12-31 | 2019-12-31 | Construction method of outer scaffold of two-way bending and twisting staggered floor elevation |
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| CN115126211A (en) * | 2022-06-23 | 2022-09-30 | 恩施清江大龙潭水电开发有限公司 | Scaffold erecting method |
| CN115749239A (en) * | 2022-11-04 | 2023-03-07 | 中国二十冶集团有限公司 | Building method for building scaffold at arc position of building |
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