CN110965781A - External frame-free protection system for cast-in-place part on periphery of prefabricated building and construction method of external frame-free protection system - Google Patents
External frame-free protection system for cast-in-place part on periphery of prefabricated building and construction method of external frame-free protection system Download PDFInfo
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- CN110965781A CN110965781A CN201911420463.2A CN201911420463A CN110965781A CN 110965781 A CN110965781 A CN 110965781A CN 201911420463 A CN201911420463 A CN 201911420463A CN 110965781 A CN110965781 A CN 110965781A
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
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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
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Abstract
The invention discloses an external frame-free protection system for a peripheral cast-in-place part of an assembly type building and a construction method thereof, wherein the external frame-free protection system for the peripheral cast-in-place part of the assembly type building comprises a main upright post, an upper platform and a lower platform, the main upright posts extend along the vertical direction and form intervals with shear walls, the upper platform and the lower platform are both connected with the main upright posts, and the upper platform is positioned above the lower platform; the lower platform comprises a vertical shear wall and a bottom pedal in contact with the shear wall, and the upper platform comprises a vertical shear wall and an upper pedal in contact with the shear wall; the main upright column positioned below the bottom pedal is connected with the shear wall through a counter-pulling screw rod. The invention can ensure the integrity of the safety protection of the simple frame body, has high safety performance, is convenient to disassemble, can be recycled, is suitable for the position of the cast-in-place shear wall, can meet the requirement of opposite-pull installation on an operation layer of the cast-in-place shear wall, and can meet the requirements of safety protection and construction operation on an operation layer.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an external frame-free protection system for cast-in-place positions on the periphery of an assembly type building and a construction method thereof.
Background
Currently, the PC structure of the prefabricated building (Prestressed concrete structure, PC structure is an abbreviation of Prestressed concrete structure) is mostly adopted as a simple pylon on the peripheral PC structure in order to achieve high efficiency, rapidness, energy conservation and environmental protection of construction, and in the aspect of safety protection of floor construction.
The periphery structure is provided with a cast-in-place shear wall, a template needs to be erected on an operation layer, and a simple safety protection operation platform cannot be installed; therefore, the common external hanging frame body method can only be used for the safety protection of the PC component with the peripheral structure, and if the peripheral structure is a cast-in-place structure, the method cannot be adopted.
Disclosure of Invention
The invention aims to provide an external frame-free protection system for cast-in-place positions on the periphery of an assembly type building and a construction method thereof, which can ensure the integrity of the safety protection of a simple frame body, have high safety performance, are convenient to disassemble, can be recycled, are suitable for the position of a cast-in-place shear wall, can meet the requirements of opposite-pull installation of an operation layer of the cast-in-place shear wall, and can meet the requirements of safety protection and construction operation of the operation layer.
The invention can be realized by the following technical scheme:
the invention provides an external frame-free protection system for a peripheral cast-in-place part of an assembly type building, which comprises a main upright post, an upper platform and a lower platform, wherein the main upright posts extend along the vertical direction and form intervals with a shear wall; the lower platform comprises a vertical shear wall and a bottom pedal in contact with the shear wall, and the upper platform comprises a vertical shear wall and an upper pedal in contact with the shear wall; the main upright column positioned below the bottom pedal is connected with the shear wall through a counter-pulling screw rod.
Furthermore, the external frame-free protection system for the cast-in-place part on the periphery of the fabricated building further comprises a plurality of horizontal rods which are arranged below the bottom layer pedal or the upper layer pedal and play a supporting role, and the horizontal rods are connected with the main upright posts.
Furthermore, the external frame-free protection system for the peripheral cast-in-place part of the fabricated building further comprises a plurality of stand columns connected with one ends, far away from the shear wall, of the horizontal rods, the stand columns extend upwards perpendicular to the horizontal rods, and a safety protection net is arranged between the adjacent stand columns in a pulling mode.
Furthermore, the external frame-free protection system for the cast-in-place part on the periphery of the fabricated building further comprises an inclined strut, one end of the inclined strut is connected to one end, far away from the shear wall, of the horizontal rod, and the other end of the inclined strut extends downwards to be connected with the main upright post.
Furthermore, the bottom layer pedal and the upper layer pedal respectively comprise steel plates and longitudinal rods arranged on the back sides of the steel plates, the steel plates of the upper layer pedal comprise two sections connected through hinges, and hinge shafts of the hinges are parallel to the shear wall.
Furthermore, the top of the main upright post is connected with a lifting ring, and the lifting ring is rotatably connected with the main upright post.
Furthermore, the external frame-free protection system for the cast-in-place part on the periphery of the fabricated building further comprises a back-tightening rod and a short cross rod, wherein the back-tightening rod extends up and down along the shear wall and is positioned below the bottom pedal, and the back-tightening rod is connected with the main upright post through the short cross rod.
Furthermore, adjacent short cross bars are connected through short oblique supports.
The invention also provides a construction method of the external frame-free protection system for the cast-in-place part at the periphery of the fabricated building, which comprises the following steps:
construction preparation → deepening of BIM technical drawing → simulation of BIM technical construction → processing and manufacturing of a safety protection operating platform → construction of a first-layer structure → dismantling of a first-layer peripheral cast-in-place shear wall template → hoisting of the safety protection operating platform in place → construction of a second-layer structure.
Further, the construction method comprises the following specific steps:
firstly, preparation of construction
a. Constructing a blueprint;
b. measurement and paying-off and other early preparation works;
II, deepening BIM technical drawings;
a. deepening vertical intervals of bolts for installing and reinforcing the peripheral cast-in-place shear wall template;
b. the vertical spacing of the split bolts of the safety protection operation platform is the same as that of the cast-in-place reinforcing bolts;
c. deepening the installation position and the installation distance of the main upright post according to the structural plane arrangement;
d. deepening the section size of each component framework of the safety protection operating platform;
e. manufacturing a processing drawing of the safety protection operating platform;
thirdly, simulating BIM technical construction;
simulating the installation process of the safety protection operating platform by using a BIM technology, and simultaneously making a safety technology trade-off;
fourthly, processing and manufacturing a safety protection operating platform;
according to a deepened reinforcement manufacturing drawing, after being assembled and accepted, the steel plate is prepared for hoisting;
fifthly, constructing a first-layer structure;
according to the deepening method, constructing a first-layer structure;
sixthly, dismantling the cast-in-place shear wall template on the periphery of the first layer;
when the first-layer structure concrete achieves form removal and adjustment, a peripheral cast-in-place shear wall template is removed, and preparation work is made for hoisting a safety protection operation platform;
hoisting the safety protection operating platform in place;
hoisting the safety protection operation platform in place by a tower crane or a truck crane through a hoisting ring, and realizing counter-pulling reinforcement of a counter-pulling screw rod through a screw rod hole; the protection system can complete installation, complete safety protection of the layer and provide an operation platform and safety protection for an upper operation layer;
eighthly, after the two-layer construction is finished, the protection system can be hoisted to the upper layer in sequence until the structure is capped.
The external frame-free protection system for the cast-in-place part on the periphery of the fabricated building and the construction method thereof have the following beneficial effects:
1. the cost is low, and the device can be produced in large scale and can be improved and customized according to requirements.
2. The protection system has the advantages of wide application range, simple operation, simple and clear structural form and convenient part assembly.
3. The operation is simple, and the labor cost is low.
4. The protection system can be repeatedly used and recycled, so that the energy conservation and environmental protection in the construction process are realized while the resources are saved.
5. The protection system breaks through the method that a simple safety protection operation platform cannot be realized at the peripheral cast-in-place shear wall part.
6. The protection system is green, environment-friendly and energy-saving in the construction process.
The part material of this protection system is simple easily acquireed, can accomplish the protection system preparation through welding or bolted connection, opening the hole to raw and other materials, has following several characteristics:
the method is characterized in that: the protection system is an integral safety protection operation platform for simultaneously protecting an operation layer and a lower layer.
The second characteristic: the fixed end of the protection system is a bottom layer poured layer, and the upper layer of the protection system is used for realizing safe maintenance and installation of an operation platform through the free end of the main upright post.
The characteristics are three: the bottom of the protection system is a lattice type whole consisting of a main upright post, a back stand, a short cross bar and a short inclined support; first, the intensity of reinforcing bottom, but the effect through short horizontal pole makes to have a space about 200mm between main column and the wall body to satisfy the installation and the reinforcement of upper periphery shear wall template.
The characteristics are as follows: the vertical space of the bottom counter-pulling screw is the same as the space of the screw for installing and reinforcing the peripheral shear wall template, so that the counter-pulling screw can realize the counter-pulling reinforcement of the whole protection system by using the original screw hole without additionally forming a hole;
the characteristics are as follows: the upper pedal is foldable, so that no gap can be ensured between the operation layer safety protection operation platform and the main body, and the installation and the reinforcement of the peripheral shear wall template of the operation layer are not influenced.
The characteristics are as follows: the hoisting rings are connected with the main upright posts through the ring fasteners, so that the hoisting of the safety protection operation platform can be met, and after the hoisting is completed, the hoisting rings can be twisted to be in a horizontal state through the ring fasteners, so that the influence on operators on the operation platform is reduced.
The characteristics are seven: the safety protection net adopts a large-hole steel wire mesh, so that the safety of the operating personnel on the operating floor can be ensured, and the influence of wind on a protection system can be reduced.
Drawings
FIG. 1 is a side view (not installed) of the external frame-free protection system for cast-in-place positions on the periphery of an assembly type building;
FIG. 2 is a side view (after installation) of the external frame-free protection system for cast-in-place positions on the periphery of the fabricated building;
FIG. 3 is a side view of the bottom deck of the present invention;
FIG. 4 is a side view of the upper deck of the present invention;
FIG. 5 is a schematic view of the connection of the main upright post and the lifting ring of the present invention;
FIG. 6 is a top view of the external frame-free protection system for cast-in-place positions of the periphery of the fabricated building according to the present invention;
FIG. 7 is a side view (facing a shear wall) of the external frame-free protection system for the cast-in-place part of the periphery of the fabricated building according to the present invention;
the reference numbers in the drawings include:
1. a main upright post; 2. a horizontal bar; 3. bracing; 4. a column; 5. a bottom layer pedal; 6. an upper deck pedal; 7. a hoisting ring; 8. oppositely pulling the screw rod; 9. back tightening; 10. a short cross bar; 11. short oblique support; 12. a safety protection net; 13. longitudinally stretching; 14. a steel plate; 15. and (7) a hinge.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the following detailed description of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 1-2 and 6-7, the invention provides an external frame-free protection system for a peripheral cast-in-place part of an assembly type building, which comprises a main upright post 1, an upper platform and a lower platform, wherein the main upright post 1 is a plurality of vertical extending columns and forms a gap with a shear wall, the upper platform and the lower platform are both connected with the main upright post 1, and the upper platform is positioned above the lower platform; the lower-layer platform comprises a vertical shear wall and a bottom-layer pedal 5 contacted with the shear wall, and the upper-layer platform comprises a vertical shear wall and an upper-layer pedal 6 contacted with the shear wall; the main upright post 1 positioned below the bottom pedal 5 is connected with the shear wall through a split screw 8. The protective system can ensure the integrity of the safety protection of the simple frame body, has high safety performance, is convenient to disassemble, can be recycled, is suitable for the position of a cast-in-place shear wall, can meet the requirement of opposite-pull installation of an operation layer of the cast-in-place shear wall, and can meet the requirements of safety protection and construction operation of an operation layer. The protective system is fixed with the n-th layer of shear wall which is poured through a split bolt to form a fixed end of the protective system; the vertical distance D of the split bolts is the same as that of the split bolts reinforced by the cast-in-place shear wall template on the (n + 1) th layer, so that the split screw can be used for directly reinforcing the bolt holes by using the template without re-drilling.
The method comprises the following steps that (1) a cast-in-place shear wall part is arranged on the periphery of an assembly type building, and a side formwork of a cast-in-place shear wall on the 1 st floor is removed; hoisting the simple safety protection operating platform in place through a hoisting ring by using a tower crane or a truck crane, and realizing counter-pull reinforcement through bolt holes when counter-pull bolts are reinforced through a cast-in-situ shear wall template; the safety protection of the first layer is guaranteed, and meanwhile the effect of a safety maintenance and operation platform can be achieved for the upper operation layer. Moreover, the protection system can be used repeatedly, and is simple and convenient to operate, high in installation efficiency and low in installation cost.
As shown in fig. 1-2, the external frame-free protection system for cast-in-place positions on the periphery of the fabricated building further comprises a plurality of horizontal rods 2 arranged below the bottom layer footplate 5 or the upper layer footplate 6 for supporting, and the horizontal rods 2 are connected with the main upright posts 1. The horizontal rod is generally made of a square tube and is connected with the main upright post 1 into a whole through welding or bolts, and the pedal and the main upright post can be connected.
As shown in fig. 1-2 and 6-7, the prefabricated building periphery cast-in-place portion external frame-free protection system further comprises a plurality of upright posts 4 connected with one ends of the horizontal rods 2 far away from the shear wall, the upright posts 4 extend upwards perpendicular to the horizontal rods 2, and a safety protection net 12 is arranged between the adjacent upright posts 4 in a pulling mode. The upright posts are made of channel steel, I-shaped steel or square tube; the horizontal rod 2 is connected into a whole by welding or bolts; for the purpose of safe maintenance, the height of the upright column is 1500 mm-2000 mm. The safety protection net adopts a permeable steel wire mesh to reduce the influence of high-rise wind pressure on the safety protection operation platform, and is connected with the stand column 4 into a whole through welding or bolt connection.
As shown in fig. 1-2, the external frame-free protection system for cast-in-place positions on the periphery of the fabricated building further comprises an inclined strut 3, one end of the inclined strut 3 is connected to one end of the horizontal rod 2, which is far away from the shear wall, and the other end of the inclined strut 3 extends downwards to be connected with the main upright post 1. The inclined strut can be made of angle steel, square tube and the like, and the top and the bottom can be connected with the main upright post 1 and the horizontal rod 2 into a whole through welding or bolt connection to form a stable triangular supporting system.
As shown in fig. 3 to 4, the bottom step 5 and the upper step 6 each include a steel plate 14 and a stringer 13 provided with a back surface of the steel plate 14, and the steel plate 14 of the upper step 6 includes two sections connected by hinges 15, and hinge axes of the hinges are parallel to the shear wall. The bottom pedal consists of a longitudinal beam 13 and a steel plate 14; the pedal and the horizontal rod 2 are connected into a whole through welding or bolts. The upper pedal is longitudinally divided into two sections from the middle position, the middle sections are connected through the hinge and can be turned over to meet the requirement of supporting and reinforcing a cast-in-place layer peripheral shear wall template, and meanwhile, the seamless connection between a protection system and a peripheral structure is ensured, so that the safety of workers on an operation layer is ensured
As shown in fig. 1-2 and 5, the top end of the main upright post 1 is connected with a hanging ring 7, and the hanging ring 7 is rotatably connected with the main upright post 1. And the lifting device is connected with the main upright post 1 through a ring buckle, so that the simple and easy safety protection operation platform can be conveniently lifted. Meanwhile, after the hoisting is finished, the hoisting ring can be twisted to be in a horizontal state around the ring buckle, so that the influence on operators on the pedal is reduced
As shown in fig. 1-2, the prefabricated building periphery cast-in-place part outrigger-free protection system further comprises a back member 9 and a short cross bar 10, wherein the back member 9 extends up and down along the shear wall and is located below the bottom step 5, and the back member 9 is connected with the main upright post 1 through the short cross bar 10. The back-tightening device is connected with the short transverse rod 10, the short inclined support 11 and the horizontal rod 2 into a whole through welding or bolts, and forms a fastening end in a form of a tightening manner with the main upright post 1 at the bottom of the bottom safety protection operating platform. The length of the short transverse rod is generally 200mm, so that a gap of about 200mm is formed between the main upright post 1 and the structural shear wall, and the requirement of formwork support and reinforcement of the peripheral shear wall of the (n + 1) th working layer is met. The short cross rod 10 is hollow so as to facilitate the smooth passing of the counter-pulling screw 8; the short cross bar 10 is positioned at the corresponding position of the counter screw 8 to enhance the stability of the counter screw 8 when being fastened. The adjacent short cross bars 10 are connected through short oblique supports 11. The short inclined support, the short cross rod 10, the main upright post 1 and the back support 9 are connected into a whole through welding or bolts, and the stability of the whole structure is guaranteed.
The invention has the following effects:
A. the protection system is an integral safety protection operation platform for simultaneously protecting an operation layer and a lower layer.
B. The fixed end of the protection system is a bottom layer poured layer, and the upper layer of the protection system is used for realizing safe maintenance and installation of an operation platform through the free end of the main upright post.
C. The bottom of the protection system is a lattice type whole consisting of a main upright post 1, a back support 9, a short cross rod 10 and a short inclined support 11; first, the intensity of reinforcing bottom, but through the effect of short horizontal pole 10 make to have a space about 200mm between main column 1 and the wall body to satisfy the installation and the reinforcement of upper periphery shear wall template.
D. The vertical distance D of the bottom counter-pulling screw is the same as the distance of screws for installing and reinforcing the peripheral shear wall template, so that the counter-pulling screw 8 can realize the counter-pulling reinforcement of the whole protection system by using the original screw hole without additionally forming a hole;
E. the pedal 6 is foldable, so that no gap can be formed between the operation layer safety protection operation platform and the main body, and the installation and the reinforcement of the peripheral shear wall template of the operation layer are not influenced.
F. Rings 7 are connected with main column 1 through the latch closure, can satisfy safety protection operation platform's hoist and mount, and after the hoist and mount was accomplished, rings 7 can twist to the horizontality through the latch closure again, has reduced the influence to operation personnel on the operation platform.
G. The safety protection net 12 adopts a large-hole steel wire mesh, so that the safety of the operating personnel on the operating floor can be ensured, and the influence of wind on a protection system can be reduced.
The invention also provides a construction method of the external frame-free protection system of the cast-in-place part at the periphery of the fabricated building, which comprises the following working procedures:
construction preparation → deepening of BIM technical drawing → simulation of BIM technical construction → processing and manufacturing of a safety protection operating platform → construction of a first-layer structure → dismantling of a first-layer peripheral cast-in-place shear wall template → hoisting of the safety protection operating platform in place → construction of a second-layer structure.
Specifically, the construction method comprises the following specific steps:
firstly, preparation of construction
a. Constructing a blueprint;
b. measurement and paying-off and other early preparation works;
II, deepening BIM technical drawings;
a. deepening vertical intervals of bolts for installing and reinforcing the peripheral cast-in-place shear wall template;
b. the vertical spacing of the split bolts 8 of the safety protection operation platform is the same as that of the cast-in-place reinforcing bolts;
c. deepening the installation position and the installation distance of the main upright post according to the structural plane arrangement;
d. deepening the section size of each component framework of the safety protection operating platform;
e. manufacturing a processing drawing of the safety protection operating platform;
thirdly, simulating BIM technical construction;
simulating the installation process of the safety protection operating platform by using a BIM technology, and simultaneously making a safety technology trade-off;
fourthly, processing and manufacturing a safety protection operating platform;
according to a deepened reinforcement manufacturing drawing, after being assembled and accepted, the steel plate is prepared for hoisting;
fifthly, constructing a first-layer structure;
according to the deepening method, constructing a first-layer structure;
sixthly, dismantling the cast-in-place shear wall template on the periphery of the first layer;
when the first-layer structure concrete achieves form removal and adjustment, a peripheral cast-in-place shear wall template is removed, and preparation work is made for hoisting a safety protection operation platform;
hoisting the safety protection operating platform in place;
hoisting the in-place safety protection operating platform by a tower crane or a truck crane through the hoisting ring 7, and realizing counter-pulling reinforcement of the counter-pulling screw 8 through a screw hole; the protection system can complete installation, complete safety protection of the layer and provide an operation platform and safety protection for an upper operation layer;
eighthly, after the two-layer construction is finished, the protection system can be hoisted to the upper layer in sequence until the structure is capped.
In the description of the present invention, it is to be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the referenced protective system or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above embodiments are only specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.
Claims (10)
1. The outer frame-free protection system for the peripheral cast-in-place part of the fabricated building is characterized by comprising a main upright, an upper platform and a lower platform, wherein the main uprights extend in the vertical direction and form intervals with shear walls, the upper platform and the lower platform are connected with the main uprights, and the upper platform is positioned above the lower platform; the lower platform comprises a vertical shear wall and a bottom pedal in contact with the shear wall, and the upper platform comprises a vertical shear wall and an upper pedal in contact with the shear wall; the main upright column positioned below the bottom pedal is connected with the shear wall through a counter-pulling screw rod.
2. The assembly type building perimeter cast-in-place part outrigger protection system according to claim 1, characterized in that the assembly type building perimeter cast-in-place part outrigger protection system further comprises a plurality of horizontal rods which are arranged below the bottom layer footplate or the upper layer footplate for supporting, and the horizontal rods are connected with the main upright posts.
3. The assembly type building periphery cast-in-place part outer frame-free protection system according to claim 2, characterized in that the assembly type building periphery cast-in-place part outer frame-free protection system further comprises a plurality of upright posts connected with one ends of the horizontal rods far away from the shear wall, the upright posts extend upwards perpendicular to the horizontal rods, and a safety protection net is arranged between the adjacent upright posts in a pulling manner.
4. The assembly type building perimeter cast-in-place part outer frame-free protection system according to claim 3, wherein the assembly type building perimeter cast-in-place part outer frame-free protection system further comprises an inclined strut, one end of the inclined strut is connected to one end of the horizontal rod, which is far away from the shear wall, and the other end of the inclined strut extends downwards to be connected with the main upright post.
5. The assembly type building perimeter cast-in-place part outer frame-free protection system according to claim 4, wherein the bottom layer pedal and the upper layer pedal respectively comprise a steel plate and a longitudinal rod provided with a back surface of the steel plate, the steel plate of the upper layer pedal comprises two sections connected by a hinge, and a hinge shaft of the hinge is parallel to the shear wall.
6. The assembly type building periphery cast-in-place part outer frame-free protection system according to claim 5, wherein the top end of the main upright post is connected with a hanging ring, and the hanging ring is rotatably connected with the main upright post.
7. The assembly type building perimeter cast-in-place part outrigger-free protection system according to claim 6, wherein the assembly type building perimeter cast-in-place part outrigger protection system further comprises a back member and a short cross bar, the back member extends up and down against the shear wall and is located below the bottom layer footplate, and the back member is connected with the main upright post through the short cross bar.
8. The fabricated building perimeter cast-in-place part outrigger-free protection system according to claim 7, characterized in that adjacent short cross bars are connected by short diagonal supports.
9. A construction method of an external frame-free protection system of a peripheral cast-in-place part of a fabricated building according to any one of claims 1 to 8, characterized by comprising the following steps:
construction preparation → deepening of BIM technical drawing → simulation of BIM technical construction → processing and manufacturing of a safety protection operating platform → construction of a first-layer structure → dismantling of a first-layer peripheral cast-in-place shear wall template → hoisting of the safety protection operating platform in place → construction of a second-layer structure.
10. The construction method according to claim 9, characterized in that it comprises the following specific steps:
firstly, preparation of construction
a. Constructing a blueprint;
b. measurement and paying-off and other early preparation works;
II, deepening BIM technical drawings;
a. deepening vertical intervals of bolts for installing and reinforcing the peripheral cast-in-place shear wall template;
b. the vertical spacing of the split bolts of the safety protection operation platform is the same as that of the cast-in-place reinforcing bolts;
c. deepening the installation position and the installation distance of the main upright post according to the structural plane arrangement;
d. deepening the section size of each component framework of the safety protection operating platform;
e. manufacturing a processing drawing of the safety protection operating platform;
thirdly, simulating BIM technical construction;
simulating the installation process of the safety protection operating platform by using a BIM technology, and simultaneously making a safety technology trade-off;
fourthly, processing and manufacturing a safety protection operating platform;
according to a deepened reinforcement manufacturing drawing, after being assembled and accepted, the steel plate is prepared for hoisting;
fifthly, constructing a first-layer structure;
according to the deepening method, constructing a first-layer structure;
sixthly, dismantling the cast-in-place shear wall template on the periphery of the first layer;
when the first-layer structure concrete achieves form removal and adjustment, a peripheral cast-in-place shear wall template is removed, and preparation work is made for hoisting a safety protection operation platform;
hoisting the safety protection operating platform in place;
hoisting the safety protection operation platform in place by a tower crane or a truck crane through a hoisting ring, and realizing counter-pulling reinforcement of a counter-pulling screw rod through a screw rod hole; the protection system can complete installation, complete safety protection of the layer and provide an operation platform and safety protection for an upper operation layer;
eighthly, after the two-layer construction is finished, the protection system can be hoisted to the upper layer in sequence until the structure is capped.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420463.2A CN110965781A (en) | 2019-12-31 | 2019-12-31 | External frame-free protection system for cast-in-place part on periphery of prefabricated building and construction method of external frame-free protection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420463.2A CN110965781A (en) | 2019-12-31 | 2019-12-31 | External frame-free protection system for cast-in-place part on periphery of prefabricated building and construction method of external frame-free protection system |
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| CN110965781A true CN110965781A (en) | 2020-04-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205012627U (en) * | 2015-07-02 | 2016-02-03 | 中天建设集团有限公司 | Assembly type structure outer wall protects stores pylon outward |
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| US20140305070A1 (en) * | 2012-06-11 | 2014-10-16 | Zhejiang Construction Engineering Group Co., Ltd. | Constructing method for concrete cylinder of construction steel bar of high-rise steel structure |
| CN203879036U (en) * | 2014-03-31 | 2014-10-15 | 中国建筑第八工程局有限公司 | Protective structure between climb mold outer frame and structural wall |
| CN204876547U (en) * | 2015-06-26 | 2015-12-16 | 中国核工业华兴建设有限公司 | Big template system of APC shell structure |
| CN205012627U (en) * | 2015-07-02 | 2016-02-03 | 中天建设集团有限公司 | Assembly type structure outer wall protects stores pylon outward |
| CN110578402A (en) * | 2019-07-31 | 2019-12-17 | 上海二十冶建设有限公司 | Tool type outer hanging rack installation method for prefabricated wall with sun shield |
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