Supporting device suitable for high-low span construction of cantilever floor support plate of multi-story building

Abstract

The utility model provides a supporting device suitable for high-low span construction of an overhanging floor support plate of a multi-story building, and relates to the technical field of overhanging floor support plate construction. The square steel supports are arranged in the short edge direction of the low-span floor support plate, the square steel supports are arranged in the long edge direction of the low-span floor support plate, and the low-span floor support plate is arranged at the upper ends of the square steel supports. A vertical angle steel support; the plurality of vertical angle steel supports are respectively arranged at the upper ends of the plurality of square steel supports; horizontal angle steel supporting; the horizontal angle steel support is arranged at the upper ends of the vertical angle steel supports and arranged in the long edge direction of the low-span floor support plate in a penetrating mode, and the high-span floor support plate is arranged at the upper end of the horizontal angle steel support. The device is simple and practical to operate, stable, reliable and high in safety.

Description

Technical Field

[0001] This utility model relates to the field of cantilever floor slab construction technology, specifically a support device suitable for the construction of cantilever floor slabs with varying heights in multi-story buildings. Background Technology

[0002] With the rapid development of urban society and economy, newly built multi-story commercial and residential complexes have gradually become a popular leisure and entertainment venue for contemporary people. Large steel structure commercial centers and other public buildings have novel and unique designs and diverse forms of expression. Currently, some multi-story commercial buildings have floor slabs with a drop in mid-span (350mm in height) and no steel beam support at the bottom of the drop slab. In addition, the five-story cantilevered structural slab has a large height above the ground, reaching as high as 24m.

[0003] Construction using traditional ground-supported scaffolding presents numerous challenges, including high construction difficulty, high safety risks, and poor stability of the uprights. Furthermore, the height difference between the bottom of the low-span floor slab and the bottom of the steel beam sealing the side support is only 66mm. How to select existing steel materials to solve the construction problem of high-altitude, low-span floor slabs supported by unstructured steel beams is a technical issue worthy of research. Summary of the Invention

[0004] In view of the above-mentioned prior art, this utility model proposes a support device suitable for the construction of cantilever floor slabs in multi-story buildings with varying heights. It aims to solve the problems of traditional ground-supported scaffolding in the construction of floor slabs with varying heights without structural steel beams in multi-story steel structure commercial buildings, which has problems such as large erection height, long construction period, high cost, high safety risks, and difficulty in selecting steel supports.

[0005] This utility model provides a support device suitable for the construction of cantilevered floor slabs in multi-story buildings with varying heights, comprising:

[0006] Square steel support; the square steel support is arranged along the short side of the low-span floor deck, and several square steel supports are arranged along the long side of the low-span floor deck, with the low-span floor deck located at the upper end of the several square steel supports;

[0007] Vertical angle steel supports; several vertical angle steel supports are provided, each located at the upper end of several square steel supports;

[0008] Horizontal angle steel support; the horizontal angle steel support is set at the upper end of several vertical angle steel supports and is arranged to run through the long side of the low-span floor deck, and the high-span floor deck is set at the upper end of the horizontal angle steel support.

[0009] Preferably, it also includes a side mold, which is disposed at the side end of the vertical folding plate with high and low spans.

[0010] Preferably, the square steel support has a specification of 100*50*3mm, and the two ends of the square steel support are respectively welded to the structural steel beams on both sides, with full welding and the fillet weld height not less than 8mm.

[0011] Preferably, the vertical angle steel support is welded to the upper end of the square steel support, and the weld is full and the height of the fillet weld is not less than 6mm.

[0012] Preferably, the horizontal angle steel support is welded to the upper end of the vertical angle steel support, and the weld is full and the fillet weld height is not less than 6mm.

[0013] Preferably, the side mold is made of 2mm thick galvanized steel plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model proposes a support device suitable for the construction of cantilever floor slabs in multi-story buildings with varying heights, which can effectively ensure the safe construction of steel reinforcement and concrete works when the cantilever floor slabs of steel structure commercial buildings are not supported by structural steel beams at the varying heights.

[0016] This utility model can be used for the laying and installation of cantilever floor decks at high and low span locations in steel structure buildings. The device is simple and practical to operate, stable and reliable, and highly safe. When there are no structural steel beams at the high and low span locations of the floor deck, there is no need to erect ultra-high disc-lock scaffolding for support, which shortens the construction period, saves bulk materials such as disc-lock uprights, horizontal bars and diagonal bars, and reduces the safety risks of high-altitude operations. Square steel, angle steel and other components can be sourced on-site, shortening the material procurement and delivery time. At the same time, it is easy to install and dismantle, which is conducive to recycling and meets the requirements of green construction, making it highly economical. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of a support device applicable to the construction of cantilevered floor slabs in multi-story buildings with varying heights in this embodiment of the present invention.

[0018] Figure 2 This is a plan view of a support device applicable to the construction of cantilevered floor slabs in multi-story buildings with varying heights in this embodiment of the present invention.

[0019] In the diagram, 1. Square steel support; 2. Horizontal angle steel support; 3. Structural steel beam; 4. Low-span floor deck; 5. Vertical angle steel support; 6. Galvanized steel plate side formwork; 7. Vertical folded plate for high and low spans; 8. High-span floor deck. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Example: Figure 1 , 2 The support device shown is suitable for the construction of cantilever floor slabs in multi-story buildings with varying heights, including: square steel support 1, vertical angle steel support 5, horizontal angle steel support 2, and galvanized steel plate side formwork 6.

[0022] The square steel supports 1 are installed along the short side of the low-span floor slab 4 to support the construction load of the reinforced concrete of the low-span floor slab. Several square steel supports 1 are installed, evenly distributed along the long side of the low-span floor slab 4 at 1m intervals. The low-span floor slab 4 is laid on top of the square steel supports 1. The square steel supports 1 have a specification of 100*50*3mm. Both ends of the square steel supports 1 are welded to the structural steel beams 3 on both sides, with full welds and fillet welds with a height of 8mm.

[0023] Furthermore, several vertical angle steel supports 5 are installed, each welded to the upper end of several square steel supports 1, with full welds and fillet welds of 6mm height. Horizontal angle steel supports 2 are welded to the upper ends of several vertical angle steel supports 5 and are arranged continuously along the long side of the low-span floor slab 4, with full welds and fillet welds of 6mm height. One end of the high-span floor slab 8 is laid on the upper end of the horizontal angle steel supports 2, and the other end is laid on the structural steel beam 3. The vertical angle steel supports 5 and the horizontal angle steel supports 2 are of model L75*5, used to support the reinforced concrete construction load of the high-span floor slab.

[0024] Furthermore, the galvanized steel plate side mold 6 is 2mm thick and is set at the side end of the vertical folded plate 7 of the high and low spans. It serves as the side mold of the vertical folded plate 7 of the high and low spans to prevent the concrete from flowing laterally. The galvanized steel plate side mold 6 is welded and fixed to the square steel support 1 and the vertical angle steel support 5.

[0025] In this embodiment, the thickness of the low-span floor slab 4 is 150mm, and the main truss reinforcement specifications are Φ12 and Φ10. The thickness of the high-span floor slab 8 is 120mm, and the main truss reinforcement specifications are Φ10 and Φ10. The vertical folded plate 7 between the high and low spans is a double-layer, two-way reinforced concrete slab with a thickness of 150mm, and the reinforcement of the folded plate is anchored into the high and low span floor slabs by no less than La.

[0026] The device in this embodiment is simple and practical to operate, stable and reliable, and highly safe. When there are no structural steel beams at the high and low span positions of the floor deck, there is no need to erect ultra-high disc-lock scaffolding for support, which shortens the construction period, saves a large amount of materials such as disc-lock uprights, horizontal bars and diagonal bars, and reduces the safety risks of high-altitude operations. Square steel, angle steel and other components can be sourced on-site, shortening the material procurement and delivery time. At the same time, it is easy to install and dismantle, which is conducive to recycling and meets the requirements of green construction, making it highly economical.

[0027] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent solutions made using the contents of this utility model specification, whether directly or indirectly applied to other related technical fields, are also within the patent protection scope of this utility model.

Claims

1. A support device suitable for the construction of cantilevered floor slabs with varying heights in multi-story buildings, characterized in that, include: Square steel support; the square steel support is arranged along the short side of the low-span floor deck, and several square steel supports are arranged along the long side of the low-span floor deck, with the low-span floor deck located at the upper end of the several square steel supports; Vertical angle steel supports; several vertical angle steel supports are provided, each located at the upper end of several square steel supports; Horizontal angle steel support; the horizontal angle steel support is set at the upper end of several vertical angle steel supports and is arranged to run through the long side of the low-span floor deck, and the high-span floor deck is set at the upper end of the horizontal angle steel support.

2. The support device as described in claim 1, applicable to the construction of cantilevered floor slabs in multi-story buildings with varying heights, is characterized in that... It also includes a side mold, which is disposed at the side end of the vertical folding plate with high and low spans.

3. The support device for high-low span construction of cantilevered floor slabs in multi-story buildings as described in claim 1 or 2, characterized in that, The square steel support has a specification of 100*50*3mm. The two ends of the square steel support are respectively welded to the structural steel beams on both sides, and the welding is full and the height of the fillet weld is not less than 8mm.

4. The support device for high-low span construction of cantilevered floor slabs in multi-story buildings as described in claim 1 or 2, characterized in that, The vertical angle steel support is welded to the upper end of the square steel support, and the weld is full with a fillet weld height of not less than 6mm.

5. The support device for high-low span construction of cantilevered floor slabs in multi-story buildings as described in claim 1 or 2, characterized in that, The horizontal angle steel support is welded to the upper end of the vertical angle steel support, and the weld is full and the height of the fillet weld is not less than 6mm.

6. The support device as described in claim 2, applicable to the construction of cantilevered floor slabs in multi-story buildings with varying heights, is characterized in that... The side mold is made of 2mm thick galvanized steel plate.

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