A self-supporting steel formwork system for steel sections

Abstract

The present application relates to a kind of steel self-bearing steel formwork system, including steel face mould, surrounding purlin, screw rod and stiff member steel skeleton, stiff member is located at the center of formwork system, stiff member is surrounded by steel face mould around, surrounding purlin is fixed on the outside of steel face mould, surrounding purlin includes vertical surrounding purlin and horizontal surrounding purlin, vertical surrounding purlin uses square steel tube, horizontal surrounding purlin uses double-spliced angle steel, surrounding purlin is fixedly connected with stiff member steel skeleton by screw rod.The steel self-bearing steel formwork system of the present application, force is transmitted by steel mould, surrounding purlin and screw rod, with stiff member inner package steel as final force component, load generated by concrete pouring is borne by stiff member itself steel skeleton, reduce the erection of formwork bent frame, solve the problem of stiff structure component formwork support, bent frame erection difficulty.

Description

Technical Field

[0001] This invention relates to the field of building formwork, and specifically to a self-supporting steel formwork system. Background Technology

[0002] For steel-encased concrete beam members, in order to solve the problem of collision between the tie rods and the inner steel in traditional formwork systems, such as... Figure 1 As shown, beam clamps can be used for formwork reinforcement. Since the lateral pressure of the concrete on both sides of a horizontal beam is consistent during pouring, this type of clamp can solve the problem of reinforcing the beam's side formwork. However, when the beam height is large, the concrete pouring pressure on the side formwork is very high, and this cantilever reinforcement method with variable cross-sections on both sides is insufficient in strength. Furthermore, this type of clamp can only solve the problem of reinforcing the side formwork of stiffened beams; the bottom formwork of the stiffened beam still needs to be reinforced with scaffolding.

[0003] like Figure 2 As shown, for steel-clad concrete column members, the formwork support can be implemented as follows: wooden formwork is used as the face form, timber is used as the vertical walers, and self-locking square and round clamps are used as the horizontal walers. This formwork system transfers the lateral pressure of the concrete in the vertical column formwork to the square and round clamps. During the pouring of the vertical column concrete, the lateral pressure in each direction is consistent, and the lateral pressure in each direction can be balanced by the horizontal walers (as shown in the figure, the lateral pressure of the concrete in the y-direction is transferred to the square and round clamps in the y-direction for mutual balance). However, when the column cross-section is large, the calculation span of this square and round clamp will be large. With the column height remaining constant, the stress ratio of the square and round clamp will increase exponentially with the increase of the column side length, resulting in insufficient bearing capacity. In addition, because this column formwork reinforcement system requires consistent pressure in all aspects of the concrete, such as... Figure 3 As shown, for inclined columns in irregular structures, the lateral pressure of concrete on the upper and lower sides of the inclined direction is inconsistent. Therefore, it is necessary to set up a separate 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 members and the formwork reinforcement of inclined column members, additional scaffolding support is required. For the bottom formwork support of inclined columns and suspended beams in irregularly shaped stiffened structures, there are problems such as lack of support surface and difficulty in erecting formwork supports. Summary of the Invention

[0005] To address the technical problems existing in the prior art, the present invention provides a self-supporting steel formwork system.

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

[0007] The self-bearing steel formwork system of section steel comprises a steel face form, a surrounding purlin, a screw rod and a stiff member steel skeleton, the stiff member steel skeleton is located at the center of the formwork system, the stiff member is surrounded by the steel face form, the surrounding purlin is fixed outside the steel face form, the surrounding purlin comprises vertical surrounding purlins and horizontal surrounding purlins, the vertical surrounding purlins are made of square steel tubes, the horizontal surrounding purlins are made of double-spliced angle steels, and the surrounding purlins are fixedly connected with the stiff member steel skeleton through the screw rod.

[0008] As a preferred technical scheme, the vertical surrounding purlins are arranged outside each steel face form along the longitudinal direction of the stiff member, the outer part of the steel face form around the stiff member is surrounded by the horizontal surrounding purlins, and the vertical surrounding purlins are fixedly connected with the horizontal surrounding purlins.

[0009] As a preferred technical scheme, the horizontal surrounding purlins are surrounded to form a rectangle, and the four corners of the rectangle are fixedly connected through pin shafts.

[0010] As a preferred technical scheme, the vertical surrounding purlins are arranged in several rows.

[0011] As a preferred technical scheme, a fixing assembly is arranged at the connecting position of the horizontal surrounding purlin and the screw rod, the fixing assembly comprises a steel gasket, a spring gasket and a nut, the double-spliced angle steel of the horizontal surrounding purlin is attached to the end parts of the two adjacent square steel tubes on the two sides, respectively, the screw rod passes through the double-spliced angle steel, the steel gasket and the spring gasket from the stiff member steel skeleton outward, and is connected with the nut, a thread matched with the screw rod is arranged in the inner ring of the nut, and the steel gasket is fixedly connected with the outer surface of the double-spliced angle steel.

[0012] As a preferred technical scheme, at the butt joint of the steel face form, an angle steel is welded on each side of the joint seam of the steel face form, and the angle steels on the two sides are connected through a fixing nut and a bolt.

[0013] As a preferred technical scheme, a sleeve is arranged at the connecting position of the screw rod and the stiff member steel skeleton, and the screw rod is fixedly connected with the stiff member steel skeleton through the sleeve.

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

[0015] Compared with the prior art, the self-bearing steel formwork system of section steel has the following beneficial effects:

[0016] The self-bearing steel formwork system of section steel solves the problems of formwork support of the stiff member, especially the inclined column and the suspended beam in the special-shaped stiff member, and has the following characteristics:

[0017] (1) The formwork system of the present application does not need to be externally supported by a bent frame, and fully solves the problem of insufficient formwork support.

[0018] (2) The formwork system of the present application can be flexibly designed and adjusted according to the shape, size and type of the component section. Attached Figure Description

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

[0020] Figure 2 This is a structural diagram of a formwork system that uses wooden templates, timber, and self-locking square and round buckles;

[0021] Figure 3 This is a schematic diagram of a separate frame system for inclined columns in an irregular structure;

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

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

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

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

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

[0027] Figure 9 yes Figure 8 A schematic diagram of the node structure in section A;

[0028] Figure 10 yes Figure 8 A schematic diagram of the node structure of section B.

[0029] In the diagram: 1. Rigid steel frame; 2. Steel face mold; 3. Vertical waler; 4. Horizontal waler; 5. Screw; 6. Sleeve; 7. Pin; 8. Steel washer; 9. Spring washer; 10. Nut; 11. Bolt; 12. Fixing nut; 13. Angle steel. Detailed Implementation

[0030] The technical solution of the present invention will be further described below with reference to specific embodiments:

[0031] like Figure 4 and Figure 6As shown in the drawings, a type steel self-bearing steel formwork system comprises a steel face form 2, a surrounding purlin, a screw rod 5 and a stiff member steel skeleton 1. The stiff member steel skeleton 1 is located at the center of the formwork system, and is surrounded by the steel face form 2. The surrounding purlin is fixed to the outer side of the steel face form 2. The surrounding purlin comprises vertical surrounding purlins 3 and horizontal surrounding purlins 4. The vertical surrounding purlins 3 are made of square steel tubes, and the horizontal surrounding purlins 4 are made of double-spliced angle steels. The surrounding purlin is fixedly connected with the stiff member steel skeleton 1 through the screw rod 5. The stiff member is formed by pouring concrete in the inner side of the steel face form 2.

[0032] As shown in the drawings, Figure 5 and Figure 7 the vertical surrounding purlins 3 are arranged along the longitudinal direction of the stiff member on the outer side of each steel face form 2. The outer part of the steel face form 2 around the stiff member is surrounded by the horizontal surrounding purlins 4. As shown in the drawings, Figure 8 the vertical surrounding purlins 3 are fixedly connected with the horizontal surrounding purlins 4 perpendicularly.

[0033] The lateral pressure generated during the pouring of concrete is first transmitted to the steel face form 2. The steel face form 2 is reinforced by the vertical surrounding purlins 3 and transmits the force to the horizontal surrounding purlins 4. The horizontal surrounding purlins 4 are finally fixed by the screw rod 5 connected with the stiff member steel skeleton 1. The concrete finally transmits the force to the stiff member steel skeleton 1. The horizontal surrounding purlins 4 of the column form are connected and reinforced by pin shafts 7 at the four corners. Finally, the steel formwork system is self-bearing with type steel, and the external support is eliminated.

[0034] The vertical surrounding purlins 3 are arranged in several rows. As shown in the drawings, Figure 9 a fixing assembly is arranged at the connection between the horizontal surrounding purlin 4 and the screw rod 5. The fixing assembly comprises a steel gasket 8, a spring gasket 9 and a nut 10. The double-spliced angle steel of the horizontal surrounding purlin 4 is fitted with the end parts of the two adjacent square steel tubes on the two sides, respectively. The screw rod 5 passes through the double-spliced angle steel, the steel gasket 8 and the spring gasket 9 from the stiff member steel skeleton 1 outward, and is connected with the nut 10. The inner ring of the nut 10 is provided with a thread matched with the screw rod 5. The steel gasket 8 is fixedly connected with the outer surface of the double-spliced angle steel.

[0035] As shown in the drawings, Figure 10 the butt joint of the steel face form 2 is provided with an angle steel 13 welded on each side of the joint. The two side angle steels 13 are connected by a fixing nut 12 and a bolt 11. That is, the bolt 11 passes through the two side angle steels 13 and is connected with the fixing nut 12. The inner ring of the fixing nut 12 is provided with a thread matched with the bolt 11. One side of the fixing nut 12 abuts against the angle steel 13.

[0036] A sleeve 6 is arranged at the connection between the screw rod 5 and the stiff member steel skeleton 1. The screw rod 5 is fixedly connected with the stiff member steel skeleton 1 through the sleeve 6.

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

[0038] The embodiment is further explanation of the present application, and is not limitation of the present application, and the person skilled in the art can make non-creative modification to the embodiment according to the need after reading the specification, but as long as in the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A self-supporting steel formwork system for steel sections, characterized in that, The steel face mold, the surrounding purlin, the screw rod and the steel skeleton of the stiff member are included, the steel skeleton of the stiff member is located at the center of the mold plate system, the stiff member is surrounded by the steel face mold, the surrounding purlin is fixed on the outside of the steel face mold, the surrounding purlin includes vertical surrounding purlin and horizontal surrounding purlin, the vertical surrounding purlin adopts square steel pipe, the horizontal surrounding purlin adopts double-spliced angle steel, and the surrounding purlin is fixedly connected with the steel skeleton of the stiff member through the screw rod. The vertical surrounding purlin has a plurality of rows, the vertical surrounding purlin is longitudinally arranged on the outside of each steel face mold along the stiff member, the outside of the steel face mold around the stiff member is surrounded by the horizontal surrounding purlin, and the vertical surrounding purlin is fixedly connected with the horizontal surrounding purlin. The horizontal surrounding purlin is surrounded into a rectangle, the four corners of the rectangle are fixedly connected through the pin shaft, the connecting position of the horizontal surrounding purlin and the screw rod is provided with a fixing assembly, the fixing assembly includes a steel gasket, a spring gasket and a nut, the double-spliced angle steel of the horizontal surrounding purlin is respectively matched with the end parts of the two adjacent square steel pipes on the two sides, the screw rod passes through the double-spliced angle steel, the steel gasket and the spring gasket from the steel skeleton of the stiff member outward and is connected with the nut, the inner ring of the nut is provided with a thread matched with the screw rod, and the steel gasket is fixedly connected with the outer surface of the double-spliced angle steel.

2. The self-supporting steel formwork system of claim 1, wherein, The butt joint of the steel face mold is provided with angle steel welded on each side of the joint, and the angle steels on the two sides are connected through the fixing nut and the bolt.

3. The self-supporting steel formwork system of claim 1, wherein, The connecting position of the screw rod and the steel skeleton of the stiff member is provided with a sleeve, and the screw rod is fixedly connected with the steel skeleton of the stiff member through the sleeve.

4. The self-supporting steel formwork system of claim 1, wherein, The component material of the mold plate system adopts Q235 steel.

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