The use of this supporting structure is complicated, with large deflection and construction amount, low construction efficiency, high labor cost, a large number of wooden nails and iron wires, and low reuse rate.
According to the statistical report of the National Bureau of Statistics, in the first three quarters of 2006, the construction area of construction industry and enterprise houses in China was 310.97 billion square meters. If the wood loss per square meter is calculated at 5‰, it will consume about 65.438 billion cubic meters of wood! What an amazing number this is! China's forest resources are increasingly scarce, and the contradiction between domestic wood supply and demand is increasingly prominent. It is imperative to save and replace wood.
There is an adjustable (infinitely connected) column under the formwork support of the new rigid building, and an adjustable rigid keel is above it. The material is cold-rolled steel plate, which is firm and not easy to deform, and the construction is safer.
The new building formwork support does not need iron wires and nails, which saves a lot of fasteners and wood and brings economic and social benefits to enterprises.
1 what are the components of the new building formwork support system?
The adjustable rigid building formwork support composite structure consists of four series: roof formwork support composite structure, open column formwork support composite structure, suspended beam formwork support composite structure and shear wall formwork support composite structure, which are independent and combined (roof formwork support composite structure and suspended beam formwork support composite structure are interconnected to form a support system).
2 What are the components of the new building formwork supporting roof series?
The roof series consists of five parts: steel main keel, steel auxiliary keel, butt column, crossbar with bolt and hollow screw.
These parts are pieced together, which is convenient for installation and transportation.
What are the main and auxiliary keel specifications of the roof series?
Steel keel is a traditional substitute of wood square, which saves a lot of wood and conforms to the trend of low-carbon buildings.
The main girder of the main keel is composed of jacket, beam core and joint.
There are auxiliary beam brackets on both sides of the jacket and the articulated joint, and the lower part is provided with an ejector pin connecting locking piece.
The beam core can slide longitudinally in the jacket to adjust the service length of the main beam.
The joint moves on the beam core to ensure the distance between the auxiliary beams.
The main girder is divided into four specifications according to the adjustable length range: B- 1 type: 2.68m-4.39b-2 type: 2.28m-3.68b-3 type:1.77m-2.88m.
Type B-4:1.17m—1.78m.
The auxiliary beam of the auxiliary keel consists of a beam body and clamps at both ends, and the clamps at both ends are on the auxiliary beam bracket or hinge on the main beam jacket to form a firm connection with the main beam.
Secondary beam is divided into three specifications: secondary beam: 1. 15m secondary beam: 0.80m secondary beam: 0.40m.
What material is used for keel support in roof building formwork support?
Steel keel is made of cold-rolled steel plate by cold-rolling forming process.
The car body is made of this cold-rolled steel plate. Compared with hot-rolled steel plate, cold-rolled steel plate has the characteristics of corrosion resistance, high elasticity, firmness and no deformation, and its surface is smoother than hot-rolled steel plate, so it can adapt to the phenomenon of pressure drop in buildings, with smooth surface and smoother pouring surface.
5. What are the specifications of the support rods in the roof building formwork support series?
The support under the roof support system adopts plug-in design, which replaces the traditional steel pipe fastener and bowl fastener frame, and is convenient to manufacture and fast in construction.
Butt studs Butt studs are welded with steel pipes with diameters of 1.5cm and 48 and 60, which can adjust floors with different heights.
Basement and standard floor are equally applicable.
Each butt stud is welded with a panel, which can be connected with the crossbar.
Specification of butt stud:
Butt stud: 2.25m.
Butt stud:1.95m.
Butt stud:1.2m.
Butt stud:1.05m.
Butt stud: 0.75m.
Cross bar A cross bar is a vertical bar with two plugs welded on steel pipes with different lengths. The specifications of the crossbar are as follows:
Cross bar:1.22m.
Cross bar: 0.87m.
Cross bar: 0.47m.
What material is the hollow screw in the formwork support system of roof building? What are the characteristics?
The seamless steel pipe with diameter of 4.0 used in hollow screw is rolled by rolling mill. Compared with the traditional solid screw, this screw is lighter in weight, easier to construct, safer and lower in cost.
What materials are the shear wall series products made of? What are the specifications?
Shear wall formwork support composite structure is composed of cross beam, vertical beam, external angle, internal angle, top pull rod, door clamp and wall-penetrating screw.
The vertical beam is made of 2mm thick cold-rolled steel plate and then welded. It consists of jacket, joint and beam core, and its structure and performance are the same as those of vertical beam supported by open column formwork.
Cross beam The cross beam consists of jacket, beam core and articulated joint. Rectangular holes are punched in the jacket and beam core to adjust the size of the through-wall screws, and the vertical beam and the formwork are fastened by the through-wall screws to ensure that the formwork does not expand during concrete pouring.
The external angle is used to connect the corner of the external wall with the beam to ensure the angle of the shear wall during construction.
The internal angle is used at the corner of the internal wall and connected with the cross beam to ensure the angle of the shear wall during construction.
Top pull rod The top pull rod consists of a ground hook, a rod body adjusting screw and a buckle.
The ground rail hook is connected with the prefabricated ground rail, and the top buckle is connected with the cross beam. By adjusting the screw, the verticality and positioning of the shear wall transverse plate are ensured.
The door opening clamp consists of an inner sleeve and an outer sleeve, and both ends are provided with U-shaped bayonets connected with the cross beam, and both ends are pierced with wall-penetrating screws, so that the U-shaped bayonets at both ends are clamped on the cross beam at the door opening and fastened with threaded screws to ensure that the width of the shear wall transverse plate at the door opening meets the size requirements.
Through-wall screws are composed of screw washers and nuts, which are used to fasten beams and door clips.
8. What are the formwork supports of suspended beams made of?
The supporting combination of cantilever beam transverse plate consists of bottom cross beam, bottom longitudinal beam, vertical supporting square bar, horizontal positioning screw, verticality adjusting screw and fastener.
The bottom cross beam is fastened on the ejector pin of the top plate cross plate support combination with fasteners, and the longitudinal beam is laid on the bottom cross beam. The spacing between the two cross beams and the cross plate meets the requirements by adjusting the positioning screw, and the balance between the two cross beams in the screw row is adjusted by adjusting the verticality, which is perpendicular to the bottom cross of the cross beam.
9 shear wall system and open column series can be universal?
Shear wall series, open column series and beam bottom series can be used universally.
10 what are the characteristics of the whole building formwork support system? Features 1: The keel connection is tight and flexible, which is not only simple to operate, but also stable in structure;
Feature 2: the freely retractable keel allows you to adapt to any size at will;
Feature 3: The clever connection between the column and the keel is not only simple but also stronger.
Feature 4: the pull rod is light in weight, which not only saves materials, but also is more flexible and firm, and the flexibility of fasteners is necessary;
Feature 5: Compared with wooden beams, the building structure is more accurate and firm;
Feature 6: make the construction site beautiful and tidy, greatly enhance the corporate image and highlight the strength of the enterprise;
Feature 7: save labor, materials and time, which is more secure;
Feature 8: No wood is used, and the product can be reused, which greatly reduces the construction cost.
1 1 What are the advantages of the integral building formwork support system compared with the traditional support system?
Time saving: Take the modular structure of 30 square meters as an example, it can be completed in 3-5 minutes.
Labor saving: to improve the construction efficiency and shorten the construction period, the traditional structure needs about 15 yuan per square meter, while the digital rigid support can be completed only in 2 yuan.
Save materials: reduce the cost of materials, do not need wood square, do not need wood square procurement costs and steel pipes, lead screws, iron wires and nails.
High reusability: it can be reused for 300 times, while traditional wood can only be reused for 5 to 6 times.
High safety: this product is all steel structure, standard parts are fastened, the structure is compact, the connection is compact, and it is safer and more reliable.
Enhance corporate image: A beautiful, neat, tidy and orderly construction site is easier to manage and can greatly enhance the overall image of the project.