Section steel self-bearing steel formwork system

Abstract

The invention relates to a profile steel self-bearing steel formwork system which comprises a steel face formwork, enclosing purlins, screws and stiff component steel ribs, stiff components are located in the center of the formwork system, the peripheries of the stiff components are enclosed by the steel face formwork, the enclosing purlins are fixed to the outer side of the steel face formwork, the enclosing purlins comprise the vertical enclosing purlins and the transverse enclosing purlins, the vertical enclosing purlins are made of square steel pipes, and the transverse enclosing purlins are made of square steel pipes. The transverse enclosing purlins are made of double-spliced angle steel, and the enclosing purlins are fixedly connected with the stiff component steel ribs through screws. According to the profile steel self-bearing steel formwork system, force is transmitted through the steel formwork, the enclosing purlins and the screws, the profile steel wrapped in the stiff component serves as a final stress component, loads generated by concrete pouring are borne by steel ribs of the stiff component, erecting of formwork bent frames is reduced, and the problem that stiff structural component formwork supporting and bent frame erecting are difficult is solved.

Description

Technical Field

[0001] The invention relates to the field of building formwork, and in particular to a self-bearing steel formwork system of section steel. Background Art

[0002] For steel-wrapped concrete beam components, in order to solve the problem of collision between the tension screw rod and the inner steel in the traditional formwork system, such as Figure 1 As shown in the figure, beam clamps can be used to reinforce the formwork. Since the concrete side pressure on both sides of the beam is consistent when pouring the horizontal beam, this clamp can solve the problem of beam side form reinforcement. However, when the beam height is large, the concrete pouring pressure on the concrete beam side form is very large, and this reinforcement method of variable cross-section cantilevers on both sides is not strong enough. Moreover, this clamp can only solve the reinforcement problem of the side form of the rigid structure beam, and the bottom form of the rigid beam still needs to be reinforced by setting up a rack.

[0003] like Figure 2 As shown, for steel-wrapped concrete column components, the formwork support can be implemented in the following ways: wooden formwork is used as the surface formwork, wooden squares are used as vertical purlins, and self-locking square and round buckles are used as transverse purlins. This formwork system transfers the lateral pressure of the concrete of the vertical column formwork to the square and round buckles. During the pouring of the vertical column concrete, the lateral pressures in all directions are consistent, and the lateral pressures of the concrete in all directions can be balanced by the transverse purlins (as shown in the figure, the lateral pressure of the concrete in the y direction is transferred to the square and round buckles in the y direction to balance each other). However, when the column section is large, the calculated span of this square and round fixture will be very large. When the column height remains unchanged, the stress ratio of the square and round fixture will increase in square ratio with the increase of the column side length, and its bearing capacity will be insufficient. In addition, since this column formwork reinforcement system requires that the pressures of all concrete be consistent, such as Figure 3 As shown, for the inclined columns in the special-shaped structures, the concrete side pressures on the upper and lower sides of the inclined direction are inconsistent, so it is necessary to set up another frame system for overall reinforcement to ensure the overall stability of the formwork system.

[0004] In general, for the bottom formwork of steel-reinforced concrete beam components and the formwork reinforcement of inclined column components, it is necessary to set up additional frame supports. For the bottom formwork support of inclined columns and suspended beams in special-shaped rigid structures, there is a lack of supporting surface and difficulty in setting up formwork supports. Summary of the invention

[0005] In order to solve the technical problems existing in the prior art, the present invention provides a self-supporting steel formwork system of profiled steel.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A self-supporting steel formwork system of steel sections comprises a steel surface formwork, a purlin, screws and a rigid component steel frame, wherein the rigid component steel frame is located at the center of the formwork system, the rigid component is surrounded by the steel surface formwork on all sides, the purlin is fixed on the outside of the steel surface formwork, the purlin comprises a vertical purlin and a transverse purlin, the vertical purlin adopts a square steel tube, the transverse purlin adopts a double-jointed angle steel, and the purlin is fixedly connected to the rigid component steel frame by screws.

[0008] As a preferred technical solution, vertical purlins are arranged longitudinally along the rigid components on the outside of each steel surface formwork, the outside of the steel surface formwork around the rigid components is surrounded by transverse purlins, and the vertical purlins are fixedly connected to the transverse purlins.

[0009] As a preferred technical solution, the transverse surrounding purlins are enclosed into a rectangle, and the four corners of the rectangle are fixedly connected by pins.

[0010] As a preferred technical solution, there are several rows of vertical purlins.

[0011] As a preferred technical solution, a fixing assembly is provided at the connection between the transverse purlin and the screw rod, and the fixing assembly includes a steel washer, a spring washer and a nut. The two sides of the double-jointed angle steel of the transverse purlin are respectively fitted with the ends of the upper and lower adjacent square steel pipes that are close to each other. The screw rod passes through the middle of the double-jointed angle steel, the steel washer and the spring washer and is connected to the nut in sequence from the steel frame of the rigid component. The inner ring of the nut is provided with a thread matching the screw rod, and the steel washer is fixedly connected to the outer surface of the double-jointed angle steel.

[0012] As a preferred technical solution, angle steels are welded on each side of the butt joints of the steel face mold and the seams of the steel face mold, and the angle steels on both sides are connected by fixing nuts and bolts.

[0013] As a preferred technical solution, a sleeve is provided at the connection between the screw rod and the steel frame of the rigid component, and the screw rod is fixedly connected to the steel frame of the rigid component through the sleeve.

[0014] As a preferred technical solution, the component material of the formwork system is Q235 steel.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The self-supporting steel formwork system of the present invention includes steel sections as the final load-bearing components in the rigid components, so as to solve the problem of difficult formwork support for inclined columns and suspended beams in rigid structural components, especially special-shaped rigid structural components. It has the following characteristics:

[0017] (1) Strong practicability: The formwork system of the present invention does not require external rack support, which fully solves the problem of insufficient conditions for erecting formwork supports.

[0018] (2) Good versatility: The formwork system of the present invention can be flexibly designed and adjusted according to the cross-sectional shape, size, and type of the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of using beam clamps for formwork reinforcement;

[0020] Figure 2 It is a structural diagram of a formwork system using wooden formwork, wooden squares and self-locking square and round buckles;

[0021] Figure 3 It is a schematic diagram of setting up a separate rack system for inclined columns in special-shaped structures;

[0022] Figure 4 It is a cross-sectional view of the vertical structure of the self-supporting steel formwork system of the present invention;

[0023] Figure 5 It is a side view of the vertical structure of the self-supporting steel formwork system of the steel section of the present invention;

[0024] Figure 6 is a cross-sectional view of the horizontal structure of the steel self-supporting steel formwork system of the present invention;

[0025] Figure 7 is a side view of the horizontal structure of the steel self-supporting steel formwork system of the present invention;

[0026] Figure 8 It is a node schematic diagram of the steel self-supporting steel formwork system of the present invention;

[0027] Fig. 9 yes Figure 8 Schematic diagram of the node structure of part A;

[0028] Fig.10 yes Figure 8 Schematic diagram of the B part node structure.

[0029] In the figure: 1. Steel frame of rigid component; 2. Steel surface formwork; 3. Vertical purlin; 4. Horizontal purlin; 5. Screw; 6. Casing; 7. Pin; 8. Steel washer; 9. Spring washer; 10. Nut; 11. Bolt; 12. Fixing nut; 13. Angle steel. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with specific implementation methods:

[0031] like Figure 4 and Figure 6As shown, a self-supporting steel formwork system of steel section includes a steel face form 2, a purlin, a screw 5 and a rigid member steel frame 1. The rigid member steel frame 1 is located at the center of the formwork system. The rigid member is surrounded by the steel face form 2. The purlin is fixed on the outside of the steel face form 2. The purlin includes a vertical purlin 3 and a horizontal purlin 4. The vertical purlin 3 is made of square steel pipes, and the horizontal purlin 4 is made of double angle steel. The purlin is fixedly connected to the rigid member steel frame 1 through screws 5. Concrete is poured inside the steel face form 2 to form a rigid member.

[0032] like Figure 5 and Figure 7 As shown, the vertical purlins 3 are arranged longitudinally along the rigid components on the outside of each steel face mold 2, and the outside of the steel face mold 2 around the rigid components is surrounded by the transverse purlins 4, as shown in FIG. Figure 8 As shown, the vertical purlin 3 is perpendicular to the transverse purlin 4 and is fixedly connected.

[0033] The lateral pressure generated during the concrete pouring process is first transmitted to the steel surface formwork 2, which is reinforced by the vertical purlin 3 and transmits the force to the transverse purlin 4. The transverse purlin 4 is finally fixed by the screw 5 connected to the rigid member steel frame 1, and the concrete is finally transmitted to the rigid member steel frame 1. The transverse purlin 4 of the column formwork is connected and reinforced by the pin 7 at the four corners. Finally, a steel formwork system with self-supporting steel is realized, eliminating the need to set up external brackets.

[0034] There are several rows of vertical purlins 3. Fig. 9 As shown, a fixing assembly is provided at the connection between the transverse purlin 4 and the screw rod 5, and the fixing assembly includes a steel gasket 8, a spring gasket 9 and a nut 10. The two sides of the double angle steel of the transverse purlin 4 are respectively fitted with the ends of the upper and lower adjacent square steel pipes that are close to each other. The screw rod 5 passes through the middle of the double angle steel, the steel gasket 8 and the spring gasket 9 from the rigid component steel frame 1 to the outside and is connected with the nut 10 in sequence. The inner ring of the nut 10 is provided with a thread matching the screw rod 5, and the steel gasket 8 is fixedly connected to the outer surface of the double angle steel.

[0035] like Fig.10 As shown, at the butt joint of the steel face mold 2, angle steels 13 are welded on each side of the seam of the steel face mold 2, and the angle steels 13 on both sides are connected by fixing nuts 12 and bolts 11. That is, the bolts 11 pass through the angle steels 13 on both sides and are connected to the fixing nuts 12, the inner ring of the fixing nuts 12 is provided with threads matching the bolts 11, and one side of the fixing nuts 12 abuts against the angle steels 13.

[0036] A sleeve 6 is sleeved at the connection between the screw rod 5 and the steel frame 1 of the rigid component, and the screw rod 5 is fixedly connected to the steel frame 1 of the rigid component through the sleeve 6 .

[0037] The component material of the formwork system is Q235 steel, which has good plasticity and welding properties.

[0038] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. A self-supporting steel formwork system, characterized in that: It includes a steel surface formwork, a purlin, a screw and a rigid component steel frame. The rigid component steel frame is located at the center of the formwork system. The rigid component is surrounded by the steel surface formwork. The purlin is fixed on the outside of the steel surface formwork. The purlin includes a vertical purlin and a horizontal purlin. The vertical purlin adopts a square steel tube, and the horizontal purlin adopts a double-jointed angle steel. The purlin is fixedly connected to the rigid component steel frame by a screw.

2. The self-supporting steel formwork system of claim 1, characterized in that: The vertical purlins are arranged longitudinally along the rigid components on the outside of each steel surface mold, the outside of the steel surface mold around the rigid components is surrounded by transverse purlins, and the vertical purlins are fixedly connected to the transverse purlins.

3. The self-supporting steel formwork system of claim 2, characterized in that: The transverse surrounding purlins form a rectangle, and the four corners of the rectangle are fixedly connected by pins.

4. The self-supporting steel formwork system of claim 1, characterized in that: The vertical purlins are arranged in several rows.

5. The self-supporting steel formwork system of claim 4, characterized in that: A fixing assembly is provided at the connection between the transverse purlin and the screw rod, and the fixing assembly includes a steel washer, a spring washer and a nut. The two sides of the double-jointed angle steel of the transverse purlin are respectively fitted with the ends of the upper and lower adjacent square steel pipes that are close to each other. The screw rod passes through the middle of the double-jointed angle steel, the steel washer and the spring washer from the steel frame of the rigid component to the outside and is connected with the nut. The inner ring of the nut is provided with a thread matching the screw rod, and the steel washer is fixedly connected to the outer surface of the double-jointed angle steel.

6. The self-supporting steel formwork system of claim 1, characterized in that: Angle steels are welded on each side of the butt joint of the steel face mold and the seam of the steel face mold, and the angle steels on both sides are connected by fixing nuts and bolts.

7. The self-supporting steel formwork system of claim 1, characterized in that: A sleeve is sleeved at the connection between the screw rod and the steel frame of the rigid component, and the screw rod is fixedly connected to the steel frame of the rigid component through the sleeve.

8. The self-supporting steel formwork system of claim 1, characterized in that: The component material of the formwork system is Q235 steel.

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