Old building thin floor conversion layer sound insulation integrated suspended ceiling structure

Abstract

The utility model discloses an old building thin floor conversion layer sound insulation integrated ceiling structure which comprises a plurality of rear embedded plates, and the bottom of a ceiling structural beam is provided with the rear embedded plates through expansion bolts. The transfer layer comprises a plurality of main keels and a plurality of auxiliary keels, the main keels are connected to the rear embedded plates corresponding to the positions of the ceiling structural beams, the main keels are arranged in the length direction of the ceiling structural beams, and the auxiliary keels are connected to the bottoms of the main keels; the sound insulation layer comprises a rock wool layer and a first gypsum board layer, the rock wool layer is embedded between the two adjacent main keels and laid on the multiple auxiliary keels, and the first gypsum board layer is installed at the bottoms of the multiple auxiliary keels; the light steel keel layer is installed on the main keels through hanging rods, and a second gypsum board layer is installed at the bottom of the light steel keel layer; and the decorative surface layer is mounted at the bottom of the second gypsum board layer. The problem that a traditional ceiling structure construction method cannot be adopted for thin floor slabs of old buildings is solved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to an integrated sound insulation ceiling structure for the thin floor slab conversion layer of old buildings. Background Technology

[0002] In the 1960s and 70s, the thickness of floor slabs in multi-story buildings was mostly between 30mm and 40mm. When renovating the interior of old buildings, the traditional method for suspended ceilings was to directly install transfer layers or suspension rods on the existing floor slabs. However, when constructing on the thin floor slabs of old buildings, expansion bolts would directly penetrate the floor slab, requiring repairs at the top. Furthermore, the load-bearing capacity would be significantly reduced, increasing material and labor costs and compromising the stability of the suspended ceiling.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a sound-insulating integrated ceiling structure for the conversion layer of thin floor slabs in old buildings is provided to solve the problem that traditional ceiling construction methods cannot be used for thin floor slabs in old buildings.

[0005] To achieve the above objectives, a sound-insulating integrated ceiling structure for thin-slab conversion layers in old buildings is provided, comprising:

[0006] Multiple rear-mounted embedded plates are installed at the bottom of multiple roof structural beams arranged in the same direction in old buildings by means of expansion bolts. The multiple rear-mounted embedded plates are spaced apart along the length direction of the roof structural beams.

[0007] The transition layer includes multiple main keels and multiple secondary keels. The main keels are connected to the rear embedded plates corresponding to the positions of the multiple ceiling structural beams. The multiple main keels are arranged along the length direction of the ceiling structural beams, and the secondary keels are connected to the bottom of the multiple main keels.

[0008] The sound insulation layer includes a rock wool layer and a first gypsum board layer. The rock wool layer is embedded between two adjacent main keels and laid on the plurality of secondary keels. The first gypsum board layer is installed at the bottom of the plurality of secondary keels.

[0009] A light steel keel layer is installed on the main keel by means of hangers, and a second gypsum board layer is installed at the bottom of the light steel keel layer;

[0010] The decorative surface layer is installed at the bottom of the second gypsum board layer.

[0011] Furthermore, the upper and lower parts of the main keel extend to form flanges, the upper flange of the main keel is welded to the rear embedded plate corresponding to the position of the plurality of ceiling structural beams, and the upper end of the hanger is installed on the lower flange of the main keel.

[0012] Furthermore, the opposite sides of the wall of the old building are respectively attached with wall panels, and the wall panels on the opposite sides of the wall are connected together by through-wall bolts. The two ends of the main keel and the two ends of the secondary keel are respectively connected to the wall panels on the inner side of the wall.

[0013] Furthermore, the second gypsum board layer is a double gypsum board layer.

[0014] The beneficial effects of this utility model are as follows: The integrated soundproof ceiling structure for the transition layer of thin-slab transition layers in old buildings achieves structural stability by fixing the main keel of the transition layer perpendicular to the ceiling structural beam and to its bottom embedded plate. After the secondary keel is installed below the main keel, a rock wool layer and a first gypsum board layer are installed simultaneously to achieve sound insulation. This integrated soundproof ceiling structure for the transition layer of thin-slab transition layers in old buildings not only meets the requirements for effective fixing of the hangers and ceiling sound insulation, but also saves internal ceiling space and construction costs, providing a reference for the renovation projects of similar thin-slab old buildings. Attached Figure Description

[0015] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0016] Figure 1 This is a schematic diagram of the integrated sound insulation ceiling structure for the thin floor slab conversion layer of old buildings, which is an embodiment of this utility model.

[0017] Figure 2 This is a plan view showing the layout of the rear embedded plate according to an embodiment of the present utility model. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Reference Figure 1 and Figure 2As shown, this utility model provides an integrated sound insulation ceiling structure for thin floor slab conversion layer in old buildings, including: a rear-mounted embedded plate 1, a conversion layer, a sound insulation layer, a light steel keel layer 4, and a decorative surface layer 5.

[0021] There are multiple embedded plates 1. In this embodiment, the thickness of the thin floor slab 8 of the old building is insufficient for constructing the ceiling structure using conventional construction methods. Multiple ceiling structural beams 6 are formed on the thin floor slab of the old building, arranged in the same direction.

[0022] Each of the ceiling structural beams 6 has multiple rear-mounted embedded plates 1 installed at its bottom via expansion bolts 11. The multiple rear-mounted embedded plates 1 are spaced apart along the length of the ceiling structural beams 6.

[0023] The transition layer includes multiple main keels 21 and multiple secondary keels 22. The main keels 21 are connected to the rear-mounted embedded plates 1 corresponding to the positions of multiple ceiling structural beams 6. The multiple main keels 21 are arranged along the length direction of the ceiling structural beams 6. The secondary keels 22 are connected to the bottom of the multiple main keels 21.

[0024] In this embodiment, the main keel is set perpendicular to the structural beam, and the secondary keel is set in the same direction as the structural beam.

[0025] In a preferred embodiment, wall panels 71 are attached to opposite sides of the wall 7 of the old building. The wall panels 71 on opposite sides of the wall 7 are connected together by through-wall bolts 72. The two ends of the main keel 21 and the two ends of the secondary keel 22 are respectively connected to the wall panels 71 on the inner side of the wall 7.

[0026] The sound insulation layer includes a rock wool layer 31 and a first gypsum board layer 32. The rock wool layer 31 is embedded between two adjacent main keels 21 and laid on multiple secondary keels 22. The first gypsum board layer 32 is installed at the bottom of the multiple secondary keels 22.

[0027] The light steel keel layer 4 is located below the first gypsum board. The light steel keel layer 4 is installed on the main keel 21 via hangers 42. The second gypsum board layer 41 is installed at the bottom of the light steel keel layer 4.

[0028] In this embodiment, the second gypsum board layer 41 is a double gypsum board layer.

[0029] The decorative surface layer 5 is installed at the bottom of the second gypsum board layer 41.

[0030] In a preferred embodiment, the upper and lower parts of the main keel 21 extend to form flanges. The upper flange of the main keel 21 is welded to the rear embedded plate 1 corresponding to the positions of the multiple ceiling structural beams 6. The upper end of the hanger 42 is installed on the lower flange of the main keel 21.

[0031] The present invention relates to an integrated sound insulation ceiling structure for thin floor slab conversion layers in old buildings. During construction, the first step is to measure and lay out the lines.

[0032] Specifically, the site is cleared, and the three lines (axis line, control line, and 1-meter line) provided by the civil engineering unit are re-measured and verified by all three parties. If the error is within a controllable range and can be eliminated in subsequent construction, the plan squareness control line is laid out according to the three lines, and detailed design is carried out. First, the CAD plan is adjusted and detailed according to the actual dimensions on site. The starting point of the transition layer is determined by dividing the space according to the embedded parts, steel frame dimensions, and spacing. Then, based on the ceiling, curtain wall shape, and their corresponding wiring relationships, a construction layout drawing is drawn.

[0033] Then according to Figure 2 The plan of the post-installed embedded plate is used to mark the positions of the post-installed embedded plate, main keel, and finished ceiling surface on the corresponding wall. The marked lines should be clear and the positions accurate.

[0034] To ensure the safety and stability of the transfer layer, the post-installed embedded plate was determined to be a 150mm×150mm×8mm hot-dip galvanized steel sheet. The post-installed embedded plate was installed at the bottom of the structural beam using φ10 through bolts and φ10 expansion bolts.

[0035] When installing the rear embedded plate, confirm the position of the through bolts. The surveying team will mark the bolt positions on the structure with an ink line and drill holes according to the positioning line. To ensure the drilling depth, a ruler should be set on the impact drill to control the depth during the layout.

[0036] Next, confirm the drilling depth according to the product specifications for φ10 expansion bolts and φ10 through bolts, and drill the holes according to the corresponding standards. After drilling, promptly remove dust from the holes and keep them clean before proceeding with the installation work.

[0037] Finally, install the rear embedded plate in the designated position.

[0038] When installing the transfer layer, weld it to the top embedded plate in the direction perpendicular to the structural beam according to the layout position, and use full welding at the welding point.

[0039] After welding, promptly remove the weld slag and apply rust-preventive paint. The rust-preventive paint should be applied in three coats. The viscosity, consistency, and thinness of the rust-preventive paint must be controlled; it should be thoroughly stirred during mixing to ensure uniform color and viscosity. For the first coat of primer, the brushing direction should be consistent, and the joints should be neat. When painting, use frequent, short strokes to prevent the brush from carrying too much paint and causing drips. After the first coat is dry, apply the second coat, applying it perpendicular to the direction of the first coat.

[0040] After the main keel is installed, the hangers and sound insulation layer are installed.

[0041] Specifically, based on the elevation shown in the drawings, use an ink line to mark the horizontal line of the ceiling elevation. After determining the suspension point positions on the main keel, drill holes to fix Ф8mm threaded rods. If the distance between the rod and the end of the main keel is greater than 300mm, additional rods should be added. When the rod encounters equipment, adjustments should be made to add additional rods. The direction of the hanging components should be sequentially reversed. Before installing the keel, the room's net height, opening elevation, and the elevation of pipes, equipment, and their supports within the ceiling should be inspected and verified according to the design requirements to avoid overlapping construction and difficulties in subsequent installation processes.

[0042] After the main keel is installed, the secondary keel and cross bracing keel are installed. After leveling is completed, the secondary keel and cross bracing keel are installed in the same manner. The spacing of the secondary keel is generally 300mm, and the spacing of the cross bracing keel is 600mm. The edge keel can be L(U) shaped galvanized light steel strips, which can be fixed with nails on concrete walls and columns. The spacing of the nails should be less than or equal to the spacing of the ceiling keel.

[0043] Select rock wool of appropriate size according to the keel layout, generally 1200mm×600mm, with a density of not less than 80kg. Place the rock wool board at a 45° angle directly on the ceiling keel, within the frame formed by the secondary keel and channel steel, and tie it to the keel with thin iron wire at certain intervals (without affecting the installation of the base board). For collision issues with water and electricity pipes, hangers, etc., the rock wool should be cut appropriately.

[0044] The first layer of gypsum board should be laid along the longitudinal joists, with the long side running alongside the joists. The gypsum board must be installed without stress; force it into place. Use wooden supports for temporary bracing when installing the ceiling panels, ensuring the panels are firmly pressed against the frame. Remove the supports only after the screws are in place. When installing the fixed panels, start from the center and work outwards; do not work at multiple points simultaneously. After fixing one panel, install and fix the next panel sequentially.

[0045] The second layer of gypsum board is connected to the light steel keel using high-strength self-tapping screws. Drilling before fixing is not allowed; instead, a self-tapping gun should be used to drive the screws in vertically in one go, with the screw head embedded approximately 0.5mm into the gypsum board paper. The distance between the self-tapping screw and the edge of the gypsum board should be 10-15mm, and for cut edges, 15-20mm. The spacing between the self-tapping screws should be 150mm from the edge of the board and 200mm from the center. The screws should be perpendicular to the board surface, with the nut embedded approximately 0.5mm into the board surface to avoid damaging the gypsum board.

[0046] According to design specifications, the second gypsum board layer should be installed with staggered joints from the first gypsum board layer. The distance between gypsum boards should be less than 5mm, leaving a V-shaped joint. After installation, check the flatness of the gypsum boards; the horizontal and vertical flatness deviations should not exceed 3mm.

[0047] Finally, the decorative surface layer is installed. Based on the material of the decorative surface layer and the design drawings, the appropriate keel is selected for installation and leveling. The ceiling decorative surface layer is installed after the concealed acceptance inspection is completed.

[0048] This utility model relates to an integrated soundproof ceiling structure for the transition layer of thin-slab buildings in old buildings. The main keel of the transition layer is perpendicular to the ceiling structural beam and fixed to its bottom embedded plate to achieve structural stability. After the secondary keel is installed below the main keel, a rock wool layer and a first gypsum board layer are installed simultaneously to achieve sound insulation. This utility model's integrated soundproof ceiling structure for the transition layer of thin-slab buildings in old buildings not only meets the requirements for effective fixing of the suspension rods and ceiling sound insulation, but also saves internal ceiling space and construction costs, providing a reference for similar renovation projects of old buildings with thin-slab floors.

[0049] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A soundproof integrated ceiling structure for thin floor slab transfer layers in old buildings, characterized in that, include: Multiple rear-mounted embedded plates are installed at the bottom of multiple roof structural beams arranged in the same direction in old buildings by means of expansion bolts. The multiple rear-mounted embedded plates are spaced apart along the length direction of the roof structural beams. The transition layer includes multiple main keels and multiple secondary keels. The main keels are connected to the rear embedded plates corresponding to the positions of the multiple ceiling structural beams. The multiple main keels are arranged along the length direction of the ceiling structural beams, and the secondary keels are connected to the bottom of the multiple main keels. The sound insulation layer includes a rock wool layer and a first gypsum board layer. The rock wool layer is embedded between two adjacent main keels and laid on the plurality of secondary keels. The first gypsum board layer is installed at the bottom of the plurality of secondary keels. A light steel keel layer is installed on the main keel by means of hangers, and a second gypsum board layer is installed at the bottom of the light steel keel layer; The decorative surface layer is installed at the bottom of the second gypsum board layer.

2. The sound-insulating integrated ceiling structure for thin floor slab conversion layers in old buildings according to claim 1, characterized in that, The upper and lower parts of the main keel extend to form flanges, the upper flange of the main keel is welded to the rear embedded plate corresponding to the position of the plurality of ceiling structural beams, and the upper end of the hanger is installed on the lower flange of the main keel.

3. The sound-insulating integrated ceiling structure for thin floor slab conversion layers in old buildings according to claim 1, characterized in that, The old building has wall panels attached to opposite sides of the wall. The wall panels on opposite sides of the wall are connected together by through-wall bolts. The two ends of the main keel and the two ends of the secondary keel are respectively connected to the wall panels on the inner side of the wall.

4. The sound-insulating integrated ceiling structure for thin floor slab conversion layers in old buildings according to claim 1, characterized in that, The second gypsum board layer is a double gypsum board layer.

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