CN203452385U - Comprehensive steel frame of cast-in-situ floor plate - Google Patents

Abstract

The utility model discloses a comprehensive steel frame for cast-in-place floor slabs. The connecting rods, the distance between the connecting rods is n, are used to let the concrete mixture drop to the floor slab; the lower rafters of the positioning rods are lower than the lower rafters of the connecting rods; the steel frame supports are arranged at the bottom of the floor slab The height between the template and the connecting rod is equal to the design thickness of the floor slab. The utility model adopts the separate processing method of the upper steel frame and the steel frame supporting parts. The upper steel frame can be shaped and processed at one time. No matter how the thickness of the floor slab changes, the upper steel frame can be recycled conveniently. The steel frame supporting parts are according to the thickness of the floor slab. It is processed into different sizes, and the site is selected according to the design thickness of the floor slab; to ensure that the position of the steel reinforcement on the slab surface is accurate, and the on-site construction personnel can walk easily, which not only reduces the difficulty of construction operation control but also does not increase the project cost.

Description

A composite steel frame for cast-in-place floor slabs

technical field

    The utility model relates to the field of building construction, in particular to a comprehensive steel frame for cast-in-place floor slabs.

Background technique

In the current construction projects, the steel bars on the surface of cast-in-place floor slabs are generally positioned by "steel bar stirrups" or plastic pads. The construction operation is more convenient. When the binding is completed, the position of the steel bars is accurate and can meet the specification requirements. However, because only the positioning of the steel bars is solved alone, when the steel bars on the slab surface are thinner or partially reinforced, it cannot fully meet the requirements for people to walk, and they are often deformed by accidental trampling during the pouring of concrete. The solid quality of the face reinforcement cover is adversely affected.

Contents of the invention

In order to solve the above existing problems, the utility model provides a recyclable cast-in-place floor slab comprehensive steel frame that can not only meet the positioning requirements of the slab surface steel bar, but also facilitate the construction workers to walk to replace the concrete pouring work platform. The purpose of the utility model is also to provide a construction method for the integrated steel frame of the cast-in-place floor slab. the

The utility model adopts the following technical scheme: a comprehensive steel frame for cast-in-place floor slabs, including steel frame supports and an upper steel frame placed above the steel bars on the floor slab, the upper steel frame includes positioning rods and fixed on The connecting rods between the positioning rods, the distance between the connecting rods is n, which is used to let the concrete mixture drop to the floor plate; the lower rafter of the positioning rod is lower than the lower rafter of the connecting rod; The steel frame support is arranged between the bottom formwork of the floor slab and the connecting rod, and its height is equal to the design thickness of the floor slab.

Preferably, the height difference a between the lower rafters of the positioning rods and the lower rafters of the connecting rods is equal to the size of the protective layer of steel bars on the surface of the slab.

Further, the distance n between the connecting rods ranges from 30mm to 100mm.

Further, the material of the positioning bar and the connecting bar is steel; the steel frame support is a processed steel part or a prefabricated part.

Further, there are at least 4 steel frame supports under each upper steel frame.

A construction method for a comprehensive steel frame of a cast-in-place floor slab, comprising the following steps: erecting a bottom formwork of the floor slab, binding the reinforcement bars of the floor slab; placing an upper steel frame above the reinforcement bars of the floor slab; Insert under the connecting rods of the upper steel frame; temporarily bind and fix the slab reinforcement intersecting with the locating rods close to the lower rafters of the locating rods; pour concrete, and release the binding of the locating rods and the slab reinforcements after the concrete is formed Fix and remove the upper steel frame; find slab surface concrete to form the floor slab.

Preferably, binding materials such as iron wires, ropes or binding straps can be used to bind the positioning rods closely to the intersecting steel bars on the board surface for binding and fixing.

The utility model is beneficial in that the upper steel frame and the steel frame support are separately processed, the upper steel frame can be shaped and processed at one time, and the upper steel frame can be conveniently recycled regardless of the thickness of the floor plate. The support parts are processed into different sizes according to the thickness of the floor slab, and the site is selected according to the design thickness of the floor slab; the factory-like processing accuracy and reasonable technology are used to ensure the accurate position of the reinforcement on the slab surface, and the on-site construction personnel can walk easily, which not only reduces the construction operation control The difficulty does not increase the engineering cost.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the upper steel frame schematic diagram of the utility model specific embodiment 1;

Fig. 3 is the side view of the upper steel frame of the utility model specific embodiment 1;

Fig. 4 is the upper steel frame schematic diagram of the utility model specific embodiment 2;

Fig. 5 is the side view of the upper steel frame of the utility model specific embodiment 2;

Fig. 6 is the upper steel frame schematic diagram of the utility model specific embodiment 3;

Fig. 7 is the side view of the upper steel frame of the utility model specific embodiment 3;

Reference signs:

1. Upper steel frame; 11. Connecting rod; 12. Positioning rod; 13. Extension end; 2. Steel frame support;

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

As shown in Figure 1-5, the utility model is a comprehensive steel frame for cast-in-place floor slabs, including a steel frame support 2 placed on the slab bottom template 4 of the floor slab and a steel frame support 2 placed above the slab surface reinforcement 3 of the floor slab Upper steel frame 1. The upper steel frame 1 includes positioning rods 12 and connecting rods 11 fixed between the positioning rods 12, the distance between the connecting rods 11 is n, and the range of n is between 30mm and 100mm, mainly used for mixing concrete The material smoothly falls to the floor through the gap, and it is also convenient for construction workers to walk on it; the lower rafter of the positioning rod 12 is lower than the lower rafter of the connecting rod 11, as shown in Figure 1, its height difference a is equal to the steel bar on the surface of the slab 3 The size of the protective layer (including the allowable deviation range of the specification), the intersecting part of the yoke of the positioning rod 12 and the steel bar 3 of the panel is temporarily bound and fixed, which can be bound and fixed by ordinary iron wire, or other fixing materials such as binding tape. The steel frame supports 2 are arranged between the bottom template 4 of the floor slab and the connecting rod 11, and its height is equal to the design thickness of the floor slab. At least four steel frame supports 2 are placed under each upper steel frame 1, so that It can form a comprehensive steel frame with stable force.

The positioning bar 12 and the connecting bar 11 are made of steel, which can be angle steel, square steel, round steel, strip steel or steel plate. As shown in FIGS. 2 and 3 , in Embodiment 1, angle steel is used for the positioning bar 12 , and angle steel is used for the connecting bar 11 . As shown in Figures 4 and 5, in Embodiment 2, the positioning rod 12 is made of strip steel, and the connecting rod 11 is made of angle steel. In Embodiment 1 and Embodiment 2, the upper steel frame does not have an extension end, and the positioning rod 12 is fixed at both ends of the connecting rod 11 . The steel frame supporting part 2 can be a steel processed part or a prefabricated part. The utility model preferably prefabricates a concrete cushion block and embeds it in the concrete after the construction is completed. The prefabricated concrete block can be processed in a factory, reducing the amount of on-site labor and conforming to the principle of building industrialization.

Embodiment 3 As shown in FIGS. 6 and 7 , the upper steel frame further includes extension ends 13 , and the extension ends 13 are arranged on both sides of the upper steel frame 1 . The material of the extension end 13 is angle steel, square steel, round steel, strip steel or steel plate.

The upper steel frame 1 and the steel frame support 2 are processed separately. The upper steel frame 1 can be shaped and processed at one time. No matter how the thickness of the floor board changes, the upper steel frame 1 can be recycled; the steel frame support 2 can be used according to the floor. Slabs with different thicknesses are processed into different sizes, which are selected on site according to the design thickness of the floor slab.

A construction method for a composite steel frame of a cast-in-place floor slab, comprising the following steps: erecting a bottom formwork 4 of the floor slab, binding the surface steel bars 3 of the floor slab; placing an upper steel frame 1 above the surface steel bars 3; Frame support 2 is placed under the connecting rod 11 of the upper steel frame 1; the steel bar 3 crossing the positioning rod 12 is placed close to the yoke of the positioning rod 12 for temporary binding and fixing; pouring concrete, after the concrete is formed, Release the binding and fixing of the positioning rods 12 and the steel bars 3 on the slab surface, and remove the upper steel frame 1; find the concrete on the slab surface to form the floor slab.

Binding materials such as iron wires, ropes or binding straps can also be used to bind the positioning rods closely to the intersecting steel bars on the board surface for binding and fixing.

Although the present utility model has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that, without departing from the spirit and scope of the present utility model defined by the appended claims, changes in form and details have been made to the present utility model. The invention makes various changes, all of which are within the protection scope of the present utility model.

Claims (5)

1. A comprehensive steel frame for cast-in-place floor slabs, characterized in that it comprises a steel frame support and an upper steel frame placed above the deck reinforcement of the floor slab, and the upper steel frame includes a positioning rod and is fixed on the positioning rod The connecting rods between the connecting rods, the distance between the connecting rods is n, used to let the concrete mixture fall to the floor plate; the lower rafter of the positioning rod is lower than the lower rafter of the connecting rod; the steel frame The supporting member is arranged between the bottom template of the floor slab and the connecting rod, and its height is equal to the design thickness of the floor slab. 2. The cast-in-place integrated steel frame for floor slabs according to claim 1, characterized in that the height difference a between the lower rafters of the positioning rods and the lower rafters of the connecting rods is equal to the size of the reinforcement protective layer on the slab surface. 3. The integrated steel frame for cast-in-place floor slabs according to claim 2, characterized in that the distance n between the connecting rods ranges from 30 mm to 100 mm. 4. A comprehensive steel frame for cast-in-place floor slabs as claimed in claim 3, characterized in that, the material of the positioning rods and the connecting rods is steel; the supporting parts of the steel frame are steel processed parts or prefabricated pieces. 5. A composite steel frame for cast-in-place floor slabs as claimed in claim 4, characterized in that there are at least four steel frame supports under each upper steel frame.

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