CN110821197A - Angle-adjustable assembly type horizontal cantilever protection shed and construction method thereof - Google Patents
Angle-adjustable assembly type horizontal cantilever protection shed and construction method thereof Download PDFInfo
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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
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3266—Safety nets
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Abstract
The invention relates to an angle-adjustable assembly type horizontal cantilever protective shed which comprises a protective shed frame, wherein one side of the protective shed frame is hinged with a steel frame column through a connecting piece, the other side of the protective shed frame is connected with the steel frame column through a steel wire connecting rope, one end of the steel wire connecting rope is connected with the outer side of the protective shed frame, and the other end of the steel wire connecting rope is connected with the steel frame column above the connecting piece. The outer side of the protection shed frame is provided with more than two reinforcing steel bar circular rings, the reinforcing steel bar circular rings are welded on the protection shed frame, and a steel wire connecting rope penetrates through each reinforcing steel bar circular ring; the steel frame column is provided with a pull ring at the position connected with the connecting rope, one end of the steel wire connecting rope is connected with the steel bar circular ring in a penetrating manner, and the other end of the steel wire connecting rope is fixed on the pull ring. The angle-adjustable assembly type horizontal cantilever protection shed has the advantages of being strong in safety, low in material consumption, capable of being preset, suitable for steel frame structure buildings and the like.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an angle-adjustable assembly type horizontal cantilever protective shed and a construction method thereof.
Background
The horizontal cantilever protection shed is a horizontal protection measure used in a building under construction, and aims to prevent ground personnel from being injured by falling objects in the construction process. Traditional level is encorbelmented protection canopy and is all used in reinforced concrete structure building, and current level is encorbelmented protection canopy structure and mounting means and is: the U-shaped buckle is pre-buried in a floor slab, the floor slab is cast with concrete and meets the strength requirement, I-shaped steel is transferred in place, a steel wire rope stretches the overhanging end of the I-shaped steel, the I-shaped steel is fixed in the U-shaped buckle, a bamboo strip plate is laid and fixed at the overhanging part of the I-shaped steel, and a protective railing is arranged at the end of the overhanging part of the I-shaped steel. The traditional horizontal cantilever protective shed is assembled in a high-altitude manual field mode, the number of procedures is large in the installation process, great potential safety hazards exist for construction operators and non-operators below a construction area, materials such as I-shaped steel, bamboo strips and protective railings used in the protective mode are large, and the cost is large.
Disclosure of Invention
The invention provides an angle-adjustable assembly type horizontal cantilever protective shed which has the characteristics of strong safety, low material consumption, presettability and suitability for steel frame structure buildings and a construction method thereof, and solves the defects of more construction procedures, high material consumption and low safety in the prior art, so that the invention can effectively solve the problem that no short plate of the horizontal cantilever protective shed exists in the construction process of the steel frame structure buildings, and improves the stability of the steel frame structure and the safety in the construction process.
In order to achieve the above purpose, the following technical solutions are provided.
The utility model provides an adjustable angle assembled level protection canopy of encorbelmenting, includes the protection canopy frame, install the protection network on the protection canopy frame, one side of protection canopy frame is passed through the connecting piece and is connected with the steel frame post is articulated, the steel frame post is the prefab, the opposite side of protection canopy frame passes through the steel wire and connects rope and steel frame post connection, the one end that the rope was connected to the steel wire is connected with the outside of protection canopy frame, and the other end is connected with the steel frame post of connecting piece top.
Furthermore, the protection canopy still includes a plurality of steel bar rings, the steel bar ring is the one-to-one form welding respectively on the outer end of protection canopy frame and the steel frame post, the steel bar ring place height on the steel frame post is higher than the height at steel bar ring place of protection canopy frame outer end, all cross-under have the steel wire to connect the rope in the steel bar ring.
Further, protection canopy frame includes a plurality of horizontal and vertical many main joist square bars that are latticed distribution with great ease, the junction of horizontal and vertical main joist square bars that distributes passes through the angle steel connecting piece fixedly, and adjacent angle steel adopts the fastener fastening.
Furthermore, the connecting piece includes first deformed steel plate and second deformed steel plate, first deformed steel plate and second deformed steel plate are the convex font steel sheet, first deformed steel plate and second deformed steel plate relative distribution embrace the steel frame post in the both sides of steel frame post, the extension board through a deformed steel plate and second deformed steel plate both sides passes through first stud fastening together.
Further, the second deformed steel plate is located the outside of steel frame post, second deformed steel plate outside is equipped with two otic placodes that outwards stretch out, and two otic placodes are parallel distribution to weld respectively on second deformed steel plate, interval between two otic placodes with the size of main joist square steel cooperatees, the main joist square steel inserts between two otic placodes, rotates through second stud and two otic placodes and is connected, realizes the articulated of main joist square steel and steel frame post.
Furthermore, the steel frame column comprises a steel frame, and the steel frame is poured with column core self-compacting concrete for filling the steel frame column.
Furthermore, the main keel square steel distributed transversely and longitudinally is 50 multiplied by 2.5 square steel, and the angle steel connecting piece is 50 multiplied by 2.5 angle steel.
The utility model provides a construction method of adjustable angle assembled horizontal cantilever protection canopy which characterized in that: comprises the following steps of (a) carrying out,
s1: selecting a protection shed material, selecting square steel as a horizontal protection shed keel according to the stress influence condition of a building, and forming grids in the transverse direction and the longitudinal directionKeel of the shape protection shed; specifically, because the horizontal protection shed mainly acts as a high-altitude falling object in the construction process, the load stacked on the horizontal protection shed is not considered, and in order to reduce the stress influence on the building, the material which has lighter weight and can meet the protection requirement is selected as much as possible. In the construction method, the weight of the keel of the horizontal protective shed is 3.73kg/m by selecting the square steel of 50 multiplied by 2.5, the type of the protective net is a dense mesh steel wire mesh, and the weight of the keel is 1.5kg/m2The weight of the formed horizontal shelter is about 16 kg/m. The weight of the horizontal protection shed made of the material is greatly lower than that of a protection shed made of I-shaped steel and bamboo strip plates with a reinforced concrete structure.
S2: the overall plan view design of the protective shed,
s2.1: determining the position of a horizontal protection shed to be arranged according to the requirement of the falling radius in JGJ80-2016 and the building height, setting the width, determining the building appearance of a single building through a building construction plan, arranging the horizontal protection sheds around the periphery of the building according to the set width, and obtaining an overall position arrangement preliminary drawing of the horizontal protection sheds;
s2.2: and carrying out detailed design on the keel position and the pull node position of the horizontal protection shed according to the selected material technical parameters, and drawing a design result into a finished preliminary drawing to obtain an integral plane design drawing of the horizontal protection shed.
S3: and establishing a BIM model of the protective shed, and modeling the overall floor plan by utilizing BIM technical application software to obtain the overall BIM model of the protective shed, wherein the model comprises the positions of the prefabricated members, the specific structures of the connecting nodes and the internal and external corner parts.
S4: protection canopy split analysis, because the degree of difficulty of whole horizontal protection canopy preparation, transportation, installation is all very big, need carry out the split with horizontal protection canopy to confirm following two split principles:
s4.1: the split part is selected from three positions, namely a male and female angle part of the structure, a large-span part and a part easy to install the prefabricated member;
s4.2: the span of a single frame of the split horizontal protective shed is not more than 7 meters, and the weight of the horizontal protective shed is not more than 1 ton.
S5: splitting the integral BIM into single BIM models, splitting the integral BIM models of the horizontal protective sheds into single BIM models according to the splitting analysis of the protective sheds, and generating single horizontal protective shed design drawings; in the splitting position, attention is paid to the adjustment arrangement of the prefabricated member and the keel.
S6: purchasing and preparing materials, and counting the material consumption and specification of the horizontal protective shed according to the single-frame BIM model obtained after splitting to generate a blanking list; and purchasing raw materials according to the blanking sheet generated by BIM model statistics.
S7: and (3) carrying out factory processing molding, wherein the raw materials are molded according to a design drawing of the single horizontal protection shed to obtain the molded single horizontal protection shed, and numbering each manufactured single horizontal protection shed for facilitating transportation and installation. The prefabricated members are installed and fixed on a construction site while the single horizontal protection shed is processed and molded in a factory, and before installation, paying-off positioning is carried out according to a design drawing of the single horizontal protection shed, so that the single horizontal protection shed can be directly installed in place after entering a field.
S8: field installation; and (4) carrying out batch hauling on the manufactured and molded single-roof shelter to the site according to a construction schedule, and paying attention to finished product protection measures in the transportation process. After the single-roof-truss protection shed is conveyed to the site, a plurality of single-roof-truss protection sheds are fixed in a hoisting mode, and the single-roof-truss protection sheds are spliced into an integral protection shed. Before hoisting, steel wire ropes need to be fixed on the outer sides of single-frame protective sheds, and the lengths of the steel wire ropes for the protective sheds at different positions need to be reasonably set. And then transporting the single horizontal protective shed to an installation position by using a tower crane, hinging and fixing the lower end of the inner side of the single horizontal protective shed and a post-clasping prefabricated member, namely a steel frame post by using a bolt, and then stretching a steel wire rope to fix the other end of the single horizontal protective shed and the steel beam prefabricated member. And adjusting the length of the steel wire rope to enable the single-pin horizontal protective sheds to incline at an angle of about 30 degrees with the floor, and when the inclinations of all the single-pin protective sheds are consistent, closely adhering the connecting joints between the single-pin protective sheds to form the integral horizontal protective shed.
S9: and (4) checking and accepting, informing a checking and accepting department, and checking and accepting the structural stability, integrity and safety of the protective shed.
Compared with the prior art, the angle-adjustable assembly type horizontal cantilever protective shed and the construction method thereof have the following beneficial effects:
firstly, the safety factor is high. The installation and the removal of the horizontal protection shed can be completed in a floor, and compared with the structural form of the cantilever steel beam type horizontal protection shed, the installation and the removal of the cantilever structure are needed, so that the construction safety is greatly improved; and the horizontal protection shed formed by the prefabricated combination has light dead weight and is beneficial to construction, thereby bringing breakthrough from scratch to the existing for the horizontal protection form of the steel frame structure and greatly improving the safety in the construction process of the steel frame structure house.
Secondly, the method can be preset, factory prefabrication is completed, and the construction period is shortened. The protection form that adopts this kind of horizontal protection canopy can carry out the prefabrication production shaping in the mill, can hoist and mount immediately when needs use fixedly, with traditional overhanging beam formula horizontal protection canopy need be under construction to corresponding position just can install and compare, saved the time of on-the-spot preparation installation to the time limit for a project has been practiced thrift.
Thirdly, the operation is simple. The installation operation of the construction site only needs to connect and fix the formed protective shed and the prefabricated member, the operation is simple, and compared with the traditional process, the construction process is simplified.
Fourthly, the economic benefit is remarkable. The protection form has light dead weight and less steel consumption, the weight per square meter is only about 16kg, compared with the traditional overhanging steel beam type unloading platform, the steel consumption is greatly saved, protection facilities such as guard rails, bamboo slats and the like are not required to be arranged, the investment and the use of materials are saved, the consumable materials are greatly reduced, and better economic benefit is obtained.
Drawings
FIG. 1 is a schematic view of a horizontal structure of an angle-adjustable assembly type horizontal cantilever protection shed according to the invention;
FIG. 2 is a schematic side view of the assembled horizontal cantilever protection shed with adjustable angle after being hoisted;
FIG. 3 is a partially enlarged view of the position of the angle steel connecting piece at the square steel joint in FIG. 1;
fig. 4 is a partially enlarged view of the connection position of the steel frame column and the protection shed in fig. 1.
Detailed Description
The safety brake device according to the invention will be described in more detail below with reference to specific embodiments and the drawing.
Example 1
Referring to fig. 1 to 4, an adjustable angle assembled level protection canopy of encorbelmenting, including the protection canopy frame, install the protection network on the protection canopy frame, one side of protection canopy frame is passed through connecting piece 1 and is connected with steel frame post 11 is articulated, steel frame post 11 is the prefab, the opposite side of protection canopy frame is passed through the steel wire and is connected rope 4 and steel frame post 11 and be connected, the steel wire is connected the one end of rope 4 and is connected with the outside of protection canopy frame, and the other end is connected with the steel frame post 11 of connecting piece 1 top. The steel wire connecting rope 4 has a diameter of
The steel wire rope is a main stress component for the horizontal and vertical overhanging protective shed and is used for tensioning the top end of the horizontal overhanging protective shed.
Referring to fig. 2 and 4, the protection shed frame further comprises a plurality of steel bar circular rings 5, the steel bar circular rings 5 are respectively welded to the outer end of the protection shed frame and the steel frame columns 11, the steel bar circular rings 5 at the outer end of the protection shed frame correspond to the steel bar circular rings 5 on the steel frame columns 11 one by one, the steel bar circular rings 5 on the steel frame columns 11 are higher than the steel bar circular rings 5 at the outer end of the protection shed frame, steel wire connecting ropes 4 are fixed in each steel bar circular ring 5 in a penetrating manner, and the steel bar circular rings 5 are steel bar circular rings 5
And the steel bar circular ring 5 is used for tensioning the steel wire connecting rope 4.
Referring to fig. 1 and 3, the shelter framework comprises a plurality of main keel square steels 2 which are transversely and longitudinally distributed in a longitudinal and transverse grid shape, the joints of the main keel square steels 2 which are transversely and longitudinally distributed are fixed through angle steel connecting pieces 3, and adjacent angle steels are fastened by fastening piece studs 8. Fastener pin 8 is of diameter
The length L is 120 mm's peg for the fixed of square steel and angle steel, the main joist square steel 2 that transversely distributes and vertically is 50 x 2.5 square steel 2, angle steel connecting piece 3 is the angle steel of 50 x 2.5.
Referring to fig. 1 and 4, the connecting member 1 includes a first deformed steel plate 6 and a second deformed steel plate 12, the first deformed steel plate 6 and the second deformed steel plate 12 are both convex-shaped steel plates, the first deformed steel plate 6 and the second deformed steel plate 12 are distributed relatively on both sides of the steel frame column 11 to clasp the steel frame column 11, and the extending plates on both sides of the first deformed steel plate 6 and the second deformed steel plate 12 are fastened together by a first stud 7. The thickness of the first special-shaped steel plate and the thickness of the second special-shaped steel plate 12 are both 10mm thick steel plates, and the first special-shaped steel plates and the second special-shaped steel plates are used for being fixed outside the steel frame columns 11 to be embraced so as to fix the protection shed frame. The first peg 7 is of diameter 
A peg of 60mm length L is used to clamp and fix two 10mm thick first and second profiled steel sheets 6, 12 to the steel frame column 11.
Referring to fig. 4, second deformed steel plate 12 is located the outside of steel frame post 11, second deformed steel plate 12 outside is equipped with two otic placodes 13 that outwards stretch out, and two otic placodes 13 are parallel distribution to weld respectively on second deformed steel plate 12, the interval between two otic placodes 13 with main joist square steel 2's size cooperatees, main joist square steel 2 inserts between two otic placodes 13, rotates through second peg 14 and two otic placodes 13 and is connected, realizes main joist square steel 2 and steel frame post 11's articulated. The second peg 14 being of diameter
The length L is 120mm for the connection of the square steel 2 to the lug plate 13.
Referring to fig. 4, the steel frame column 11 comprises a steel frame 15, and a core self-compacting concrete 10 for filling the steel frame 15 is poured into the steel frame 15 to form the steel frame column 11.
Referring to fig. 1 to 4, the angle-adjustable assembly type horizontal cantilever protection shed has the following advantages when in specific use:
firstly, the safety factor is high. The installation and the removal of this kind of horizontal protection canopy can be accomplished in the floor, compare in the structural style of girder steel formula horizontal protection canopy of encorbelmenting need install, dismantle on the structure of encorbelmenting, the great improvement of construction safety nature.
Secondly, factory prefabrication is completed, and construction period is saved. The protection form that adopts this kind of horizontal protection canopy can carry out the prefabrication production shaping in the mill, can hoist and mount immediately when needs use fixedly, with traditional overhanging beam formula horizontal protection canopy need be under construction to corresponding position just can install and compare, saved the time of on-the-spot preparation installation to the time limit for a project has been practiced thrift.
Thirdly, the operation is simple. The installation operation of the construction site only needs to connect and fix the formed protective shed and the prefabricated member, the operation is simple, and compared with the traditional process, the construction process is simplified.
Fourthly, the economic benefit is remarkable. The protection form has light dead weight and less steel consumption, the weight per square meter is only about 16kg, compared with the traditional overhanging steel beam type unloading platform, the steel consumption is greatly saved, protection facilities such as guard rails, bamboo slats and the like are not required to be arranged, the material is saved, and better economic benefit is obtained.
The stress principle of the invention is as follows: the horizontal cantilever protection shed is characterized in that single-truss prefabricated and field assembled and combined to form the horizontal cantilever protection shed by utilizing the structural characteristics of a steel frame, the horizontal cantilever protection shed is hoisted and fixed on the steel frame structure by arranging fixing pieces such as special-shaped steel plates, steel bar circular rings 5 and the like on the steel frame structure in advance, and vertical loads and horizontal loads are transmitted to the steel frame structure through prefabricated components and steel wire ropes.
The process principle of the invention is as follows: firstly, drawing an integral plane design drawing of a horizontal protection shed according to the building exterior, establishing a horizontal protection shed model by utilizing a BIM technology, comprehensively considering structural stress and corner positions of internal and external corners, splitting the integral horizontal protection shed model into single horizontal protection sheds which are easy to manufacture and install, processing the single horizontal protection sheds in a production workshop through refined BIM models, and finally, hoisting and fixing the single horizontal protection sheds on a steel frame structure through prefabricated members. The horizontal protection shed formed by the prefabricated combination has light dead weight and is beneficial to construction, a breakthrough is brought to the horizontal protection form of the steel frame structure from scratch, and the safety in the construction process of the steel frame structure house is also greatly improved.
Example 2
Referring to fig. 1 to 4, a construction method of an angle-adjustable assembly type horizontal cantilever protection shed is characterized in that: comprises the following steps of (a) carrying out,
s1: selecting a protection shed material, namely selecting square steel 2 as a horizontal protection shed keel according to the stress influence condition of a building, and forming latticed protection shed keels in the transverse direction and the longitudinal direction; specifically, because the horizontal protection shed mainly acts as a high-altitude falling object in the construction process, the load stacked on the horizontal protection shed is not considered, and in order to reduce the stress influence on the building, the material which has lighter weight and can meet the protection requirement is selected as much as possible. In the construction method, the square steel 2 with the weight of 50 multiplied by 2.5 is selected as the keel of the horizontal protective shed, the weight is 3.73kg/m, the type of the protective net is selected from dense mesh steel wire meshes, and the weight is 1.5kg/m2The weight of the formed horizontal shelter is about 16 kg/m. The weight of the horizontal protection shed made of the material is greatly lower than that of a protection shed made of I-shaped steel and bamboo strip plates with a reinforced concrete structure.
S2: the overall plan view design of the protective shed,
s2.1: determining the position of a horizontal protection shed to be arranged according to the requirement of the falling radius in JGJ80-2016 and the building height, setting the width, determining the building appearance of a single building through a building construction plan, arranging the horizontal protection sheds around the periphery of the building according to the set width, and obtaining an overall position arrangement preliminary drawing of the horizontal protection sheds;
s2.2: and carrying out detailed design on the keel position and the pull node position of the horizontal protection shed according to the selected material technical parameters, and drawing a design result into a finished preliminary drawing to obtain an integral plane design drawing of the horizontal protection shed.
S3: and establishing a BIM model of the protective shed, and modeling the overall floor plan by utilizing BIM technical application software to obtain the overall BIM model of the protective shed, wherein the model comprises the positions of the prefabricated members, the specific structures of the connecting nodes and the internal and external corner parts.
S4: protection canopy split analysis, because the degree of difficulty of whole horizontal protection canopy preparation, transportation, installation is all very big, need carry out the split with horizontal protection canopy to confirm following two split principles:
s4.1: the split part is selected from three positions, namely a male and female angle part of the structure, a large-span part and a part easy to install the prefabricated member;
s4.2: the span of a single frame of the split horizontal protective shed is not more than 7 meters, and the weight of the horizontal protective shed is not more than 1 ton.
S5: splitting the integral BIM into single BIM models, splitting the integral BIM models of the horizontal protective sheds into single BIM models according to the splitting analysis of the protective sheds, and generating single horizontal protective shed design drawings; in the splitting position, attention is paid to the adjustment arrangement of the prefabricated member and the keel.
S6: purchasing and preparing materials, and counting the material consumption and specification of the horizontal protective shed according to the single-frame BIM model obtained after splitting to generate a blanking list; and purchasing raw materials according to the blanking sheet generated by BIM model statistics.
S7: and (3) carrying out factory processing molding, wherein the raw materials are molded according to a design drawing of the single horizontal protection shed to obtain the molded single horizontal protection shed, and numbering each manufactured single horizontal protection shed for facilitating transportation and installation. The prefabricated members are installed and fixed on a construction site while the single horizontal protection shed is processed and molded in a factory, and before installation, paying-off positioning is carried out according to a design drawing of the single horizontal protection shed, so that the single horizontal protection shed can be directly installed in place after entering a field.
S8: field installation; and (4) carrying out batch hauling on the manufactured and molded single-roof shelter to the site according to a construction schedule, and paying attention to finished product protection measures in the transportation process. After the single-roof-truss protection shed is conveyed to the site, a plurality of single-roof-truss protection sheds are fixed in a hoisting mode, and the single-roof-truss protection sheds are spliced into an integral protection shed. Before hoisting, steel wire ropes need to be fixed on the outer sides of single-frame protective sheds, and the lengths of the steel wire ropes for the protective sheds at different positions need to be reasonably set. Then transporting the single horizontal protective shed to an installation position by using a tower crane, hinging and fixing the lower end of the inner side of the single horizontal protective shed and a post-clasping prefabricated member, namely a steel frame post 11, by using a bolt, and then stretching a steel wire rope to fix the other end of the single horizontal protective shed and the steel beam prefabricated member. And adjusting the length of the steel wire rope to enable the single-pin horizontal protective sheds to incline at an angle of about 30 degrees with the floor, and when the inclinations of all the single-pin protective sheds are consistent, closely adhering the connecting joints between the single-pin protective sheds to form the integral horizontal protective shed.
S9: and (4) checking and accepting, informing a checking and accepting department, and checking and accepting the structural stability, integrity and safety of the protective shed.
The method comprises the following specific steps:
the steel frame column 11 is connected: the connected node of steel frame post 11 and horizontal protection canopy sets up in the high position of 200mm on the floor face height, connects through the mode that sets up connecting piece 1, and the connected mode is articulated connection. Firstly, fixing two special-shaped steel plates (such as a first special-shaped steel plate 6 and a second special-shaped steel plate 12 in the figure) on a steel frame column 11 by a first bolt 7 at the connecting position of the steel frame column 11, wherein the front ends of the two steel plate clamping plates are provided with lug plates 13, the lug plates 13 are provided with bolt holes with the hole diameter of 20mm, and the distance between the two lug plates 13 with bolt holes is 60mm, so that when the protective shed is installed, a main keel 50 x 2.5 square steel 2 can be inserted between the lug plates 13, then the bolt with the diameter of 18 penetrates through the lug plates 13 and the main keel square steel 2, and the main keel square steel 2 is fixed on the steel frame column 11 in a hinged mode.
Connecting concrete plates: horizontal protection canopy connecting piece 1 is buried underground in advance when floor concrete placement, and floor connecting piece 1 is the corrosion resistant plate who has otic placode 13, and the steel sheet is 10mm thick, and otic placode 13 is 8mm thick, sets up the peg mouth on the otic placode 13, makes things convenient for connecting piece 1 and 50 x 2.5's main joist square steel 2 handing-over to be connected, and connected mode is similar with 11 connected modes of steel frame post.
Connecting steel beams: adopt phi 16 round steel to prefabricate into reinforcing bar ring 5 in advance then weld with the girder steel on, main aim at can fix wire rope, can form with the girder steel and the horizontal protection canopy outside with wire rope and be connected. Because the inside of the horizontal protection shed is fixed with the steel frame column 11 in a hinged mode, and then the outside of the horizontal protection shed is fixed with the steel beam by using a steel wire rope, the horizontal protection shed can form stable and reliable connection.
When a single keel is prefabricated, the keel is uniformly arranged according to the space 1250mm between longitudinal keels and the space 1000mm between transverse keels, the longitudinal keels are full-length keels, and the transverse keels are welded in the longitudinal direction according to the space size. If the special-shaped single keel is generated by touching the corner positions of the internal corner and the external corner, the distance between the longitudinal keel and the transverse keel is not larger than the original size. 12# iron wires (2.8mm diameter) are bound on 2 keels of square steel for the dense mesh steel wire gauze, the binding distance is less than or equal to 500mm, the binding points must be arranged at the positions of the welding joints of the keels of the protective shed, and the gap between the steel wire gauze and the keels is less than or equal to 2 mm. And after the single-frame protective shed is manufactured, numbering the single-frame protective shed corresponding to the blanking list formed by the previous design drawing to form a material list.
Before hoisting, a phi 16 steel wire rope is bound on a single-frame protective shed, and the steel wire rope is fixed at two ends of the outer side of the single-frame horizontal protective shed. During hoisting, the outer transverse keel of the single horizontal protective shed is hung by a tower crane hook. The single horizontal protection shed is transported to an installation position, the inner side of the protection shed is fixed with a connecting piece 1 of a steel frame column 11 or a connecting piece 1 of a floor slab by using a stud, after the two sides of the inner side of the single horizontal protection shed are hinged and fixed stably, a steel wire rope on the outer side of the horizontal protection shed penetrates through a prefabricated circular ring on a steel beam, then a tower crane is commanded to slowly descend the horizontal protection side, the angle of the horizontal protection shed is adjusted, and when the horizontal protection shed reaches a proper position, a pull ring and the steel wire rope are pulled and fixed. After the heights of two sides of the single horizontal protective shed are consistent, the tower crane hook is loosened.
In the description of the present invention, it is to be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate orientations or positional relationships, are used based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and for the simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are 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 utility model provides a protection canopy of encorbelmenting of adjustable angle assembled level which characterized in that: including the protection canopy frame, one side of protection canopy frame is passed through the connecting piece and is connected with the steel frame post is articulated, the opposite side of protection canopy frame is passed through the steel wire and is connected rope and steel frame post connection, the one end of steel wire connection rope is connected with the outside of protection canopy frame, and the other end is connected with the steel frame post of connecting piece top.
2. The angle-adjustable assembly type horizontal cantilever protection shed according to claim 1, wherein: the protection canopy still includes a plurality of steel bar rings, the steel bar ring is the one-to-one form welding respectively on protection canopy frame's outer end and the steel frame post, the steel bar ring place height on the steel frame post is higher than the steel bar ring place height of protection canopy frame outer end, all cross-under have the steel wire to connect the rope in the steel bar ring.
3. The angle-adjustable assembly type horizontal cantilever protection shed according to claim 2, wherein: the protection canopy frame includes that a plurality of horizontal and vertical be many main joist square bars of grid distribution with great ease, the junction of horizontal and vertical main joist square bars that distributes passes through the angle steel connecting piece fixedly, and adjacent angle steel adopts the fastener fastening.
4. The angle-adjustable assembled horizontal cantilever shelter of any one of claims 1 to 3, wherein: the connecting piece includes first deformed steel plate and second deformed steel plate, first deformed steel plate and second deformed steel plate are the convex character shape steel sheet, first deformed steel plate and second deformed steel plate relative distribution embrace the steel frame post in the both sides of steel frame post, stretch out the board through a deformed steel plate and second deformed steel plate both sides and pass through first stud fastening together.
5. The angle-adjustable assembly type horizontal cantilever protection shed according to claim 4, wherein: the second deformed steel plate is located the outside of steel frame post, second deformed steel plate outside is equipped with two otic placodes that outwards stretch out, and two otic placodes are parallel distribution to weld respectively on second deformed steel plate, interval between two otic placodes with the size of main joist square steel cooperatees, the main joist square steel inserts between two otic placodes, rotates through second stud and two otic placodes and is connected, realizes the articulated of main joist square steel and steel frame post.
6. The angle-adjustable assembly type horizontal cantilever protection shed according to claim 5, wherein: the steel frame column comprises a steel frame, and the steel frame is internally poured with column core self-compacting concrete for filling the steel frame column.
7. The angle-adjustable assembly type horizontal cantilever protection shed according to claim 6, wherein: the main keel square steel which is transversely and longitudinally distributed is 50 multiplied by 2.5 square steel, and the angle steel connecting piece is 50 multiplied by 2.5 angle steel.
8. A construction method of the angle-adjustable fabricated horizontal cantilever shelter of any one of claims 1 to 6, which comprises the following steps: comprises the following steps of (a) carrying out,
s1: selecting a protection shed material, namely selecting square steel as a horizontal protection shed keel according to the stress influence condition of a building, and forming latticed protection shed keels in the transverse direction and the longitudinal direction;
s2: the overall plan view design of the protective shed,
s2.1: determining the position of a horizontal protection shed according to standard requirements and building height, setting the width, determining the building appearance of a single building through a building construction plan, and setting the horizontal protection shed around the building according to the set width to obtain an overall position arrangement preliminary drawing of the horizontal protection shed;
s2.2: carrying out detailed design on the keel position and the pull node position of the horizontal protection shed according to the selected material technical parameters, and drawing a design result into a finished preliminary drawing to obtain an integral plane design drawing of the horizontal protection shed;
s3: building a BIM model of the protective shed, and modeling the overall floor plan by using BIM technical application software to obtain the overall BIM model of the protective shed, wherein the model comprises the positions of prefabricated parts, the specific structures of connecting nodes and the positions of the internal and external corners;
s4: the analysis of tearing open the canopy combines the degree of difficulty of whole horizontal protection canopy preparation, transportation and installation, carries out the split with horizontal protection canopy to following two points make the split principle:
s4.1: selecting split parts, including male and female corner parts of the structure, large-span parts and parts easy to mount prefabricated parts;
s4.2: the span of a single frame of the split horizontal protective shed is not more than 7 meters, and the weight is not more than 1 ton;
s5, splitting the integral BIM into single BIM models, splitting the integral BIM models of the horizontal protective shed into single BIM models according to shed splitting analysis, and generating a design drawing of the single horizontal protective shed;
s6: purchasing and preparing materials, counting the material consumption and specification of the horizontal protective shed according to the single-frame BIM model obtained after splitting, and generating a blanking order to purchase raw materials;
s7: processing and forming, namely manufacturing and forming raw materials according to a single-frame horizontal protective shed design drawing to obtain a formed single-frame horizontal protective shed, numbering the manufactured single-frame horizontal protective shed, performing installation and fixing work of prefabricated parts on a construction site while processing and forming the single-frame horizontal protective shed, performing paying-off positioning according to the single-frame horizontal protective shed design drawing before installation, and ensuring that the single-frame horizontal protective shed can be directly installed in place after entering a field;
s8: field installation; transporting the single-roof shelter to the site, and fixing the single-roof shelters in a hoisting manner to splice the single-roof shelters into an integral shelter;
s9: checking and accepting.
9. The construction method of the angle-adjustable fabricated horizontal cantilever protection shed according to claim 8, wherein: the steel wire rope is fixed on the outer side of the single-roof horizontal protective shed before the steel wire rope is installed on site, the single-roof horizontal protective shed is transported to an installation position by a tower crane, the lower end of the inner side of the single-roof horizontal protective shed is hinged and fixed with the post-clasping prefabricated member by a bolt, and then the other end of the single-roof horizontal protective shed is stretched and fixed with the steel beam prefabricated member.
10. The construction method of the angle-adjustable fabricated horizontal cantilever protection shed according to claim 9, wherein: and adjusting the length of the steel wire rope to enable the single-pin horizontal protective sheds to incline at an angle of about 30 degrees with the floor, and when the inclinations of all the single-pin protective sheds are consistent, closely adhering the connecting joints between the single-pin protective sheds to form the integral horizontal protective shed.
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