阅读说明：本技术 一种可调角度装配式水平悬挑防护棚及其施工方法 (Angle-adjustable assembly type horizontal cantilever protection shed and construction method thereof ) 是由 曾凡荣 李荣芳 姚开成 何显文 陈祝华 于 2019-12-10 设计创作，主要内容包括：本发明涉及一种可调角度装配式水平悬挑防护棚,包括防护棚框架,所述防护棚框架的一侧通过连接件与钢框架柱铰接连接,所述防护棚框架的另一侧通过钢丝连接绳与钢框架柱连接,所述钢丝连接绳的一端与防护棚框架的外侧连接,另一端与连接件上方的钢框架柱连接。所述防护棚框架的外侧设有两个以上的钢筋圆环,所述钢筋圆环焊接在所述防护棚框架上,每个钢筋圆环内均穿接有钢丝连接绳；所述钢框架柱与连接绳连接的位置设有拉环,所述钢丝连接绳的一端与钢筋圆环穿接,另一端固定在拉环上。本发明可调角度装配式水平悬挑防护棚具有安全性强、材料消耗低、可预置、适合钢框架结构建筑特点等优点。(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.)

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.

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.